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/**********************************************************
* Copyright 1998-2013 VMware, Inc. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
**********************************************************/
/**
* @file svga_tgsi_vgpu10.c
*
* TGSI -> VGPU10 shader translation.
*
* \author Mingcheng Chen
* \author Brian Paul
*/
#include "pipe/p_compiler.h"
#include "pipe/p_shader_tokens.h"
#include "pipe/p_defines.h"
#include "tgsi/tgsi_build.h"
#include "tgsi/tgsi_dump.h"
#include "tgsi/tgsi_info.h"
#include "tgsi/tgsi_parse.h"
#include "tgsi/tgsi_scan.h"
#include "tgsi/tgsi_two_side.h"
#include "tgsi/tgsi_aa_point.h"
#include "tgsi/tgsi_util.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "util/u_bitmask.h"
#include "util/u_debug.h"
#include "util/u_pstipple.h"
#include "svga_context.h"
#include "svga_debug.h"
#include "svga_link.h"
#include "svga_shader.h"
#include "svga_tgsi.h"
#include "VGPU10ShaderTokens.h"
#define INVALID_INDEX 99999
#define MAX_INTERNAL_TEMPS 3
#define MAX_SYSTEM_VALUES 4
#define MAX_IMMEDIATE_COUNT \
(VGPU10_MAX_IMMEDIATE_CONSTANT_BUFFER_ELEMENT_COUNT/4)
#define MAX_TEMP_ARRAYS 64 /* Enough? */
/**
* Clipping is complicated. There's four different cases which we
* handle during VS/GS shader translation:
*/
enum clipping_mode
{
CLIP_NONE, /**< No clipping enabled */
CLIP_LEGACY, /**< The shader has no clipping declarations or code but
* one or more user-defined clip planes are enabled. We
* generate extra code to emit clip distances.
*/
CLIP_DISTANCE, /**< The shader already declares clip distance output
* registers and has code to write to them.
*/
CLIP_VERTEX /**< The shader declares a clip vertex output register and
* has code that writes to the register. We convert the
* clipvertex position into one or more clip distances.
*/
};
struct svga_shader_emitter_v10
{
/* The token output buffer */
unsigned size;
char *buf;
char *ptr;
/* Information about the shader and state (does not change) */
struct svga_compile_key key;
struct tgsi_shader_info info;
unsigned unit;
unsigned inst_start_token;
boolean discard_instruction; /**< throw away current instruction? */
union tgsi_immediate_data immediates[MAX_IMMEDIATE_COUNT][4];
unsigned num_immediates; /**< Number of immediates emitted */
unsigned common_immediate_pos[8]; /**< literals for common immediates */
unsigned num_common_immediates;
boolean immediates_emitted;
unsigned num_outputs; /**< include any extra outputs */
/** The first extra output is reserved for
* non-adjusted vertex position for
* stream output purpose
*/
/* Temporary Registers */
unsigned num_shader_temps; /**< num of temps used by original shader */
unsigned internal_temp_count; /**< currently allocated internal temps */
struct {
unsigned start, size;
} temp_arrays[MAX_TEMP_ARRAYS];
unsigned num_temp_arrays;
/** Map TGSI temp registers to VGPU10 temp array IDs and indexes */
struct {
unsigned arrayId, index;
} temp_map[VGPU10_MAX_TEMPS]; /**< arrayId, element */
/** Number of constants used by original shader for each constant buffer.
* The size should probably always match with that of svga_state.constbufs.
*/
unsigned num_shader_consts[SVGA_MAX_CONST_BUFS];
/* Samplers */
unsigned num_samplers;
boolean sampler_view[PIPE_MAX_SAMPLERS]; /**< True if sampler view exists*/
ubyte sampler_target[PIPE_MAX_SAMPLERS]; /**< TGSI_TEXTURE_x */
ubyte sampler_return_type[PIPE_MAX_SAMPLERS]; /**< TGSI_RETURN_TYPE_x */
/* Address regs (really implemented with temps) */
unsigned num_address_regs;
unsigned address_reg_index[MAX_VGPU10_ADDR_REGS];
/* Output register usage masks */
ubyte output_usage_mask[PIPE_MAX_SHADER_OUTPUTS];
/* To map TGSI system value index to VGPU shader input indexes */
ubyte system_value_indexes[MAX_SYSTEM_VALUES];
struct {
/* vertex position scale/translation */
unsigned out_index; /**< the real position output reg */
unsigned tmp_index; /**< the fake/temp position output reg */
unsigned so_index; /**< the non-adjusted position output reg */
unsigned prescale_scale_index, prescale_trans_index;
boolean need_prescale;
} vposition;
/* For vertex shaders only */
struct {
/* viewport constant */
unsigned viewport_index;
/* temp index of adjusted vertex attributes */
unsigned adjusted_input[PIPE_MAX_SHADER_INPUTS];
} vs;
/* For fragment shaders only */
struct {
unsigned color_out_index[PIPE_MAX_COLOR_BUFS]; /**< the real color output regs */
unsigned num_color_outputs;
unsigned color_tmp_index; /**< fake/temp color output reg */
unsigned alpha_ref_index; /**< immediate constant for alpha ref */
/* front-face */
unsigned face_input_index; /**< real fragment shader face reg (bool) */
unsigned face_tmp_index; /**< temp face reg converted to -1 / +1 */
unsigned pstipple_sampler_unit;
unsigned fragcoord_input_index; /**< real fragment position input reg */
unsigned fragcoord_tmp_index; /**< 1/w modified position temp reg */
/** Which texture units are doing shadow comparison in the FS code */
unsigned shadow_compare_units;
} fs;
/* For geometry shaders only */
struct {
VGPU10_PRIMITIVE prim_type;/**< VGPU10 primitive type */
VGPU10_PRIMITIVE_TOPOLOGY prim_topology; /**< VGPU10 primitive topology */
unsigned input_size; /**< size of input arrays */
unsigned prim_id_index; /**< primitive id register index */
unsigned max_out_vertices; /**< maximum number of output vertices */
} gs;
/* For vertex or geometry shaders */
enum clipping_mode clip_mode;
unsigned clip_dist_out_index; /**< clip distance output register index */
unsigned clip_dist_tmp_index; /**< clip distance temporary register */
unsigned clip_dist_so_index; /**< clip distance shadow copy */
/** Index of temporary holding the clipvertex coordinate */
unsigned clip_vertex_out_index; /**< clip vertex output register index */
unsigned clip_vertex_tmp_index; /**< clip vertex temporary index */
/* user clip plane constant slot indexes */
unsigned clip_plane_const[PIPE_MAX_CLIP_PLANES];
unsigned num_output_writes;
boolean constant_color_output;
boolean uses_flat_interp;
/* For all shaders: const reg index for RECT coord scaling */
unsigned texcoord_scale_index[PIPE_MAX_SAMPLERS];
/* For all shaders: const reg index for texture buffer size */
unsigned texture_buffer_size_index[PIPE_MAX_SAMPLERS];
/* VS/GS/FS Linkage info */
struct shader_linkage linkage;
bool register_overflow; /**< Set if we exceed a VGPU10 register limit */
};
static boolean
emit_post_helpers(struct svga_shader_emitter_v10 *emit);
static boolean
emit_vertex(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst);
static char err_buf[128];
static boolean
expand(struct svga_shader_emitter_v10 *emit)
{
char *new_buf;
unsigned newsize = emit->size * 2;
if (emit->buf != err_buf)
new_buf = REALLOC(emit->buf, emit->size, newsize);
else
new_buf = NULL;
if (!new_buf) {
emit->ptr = err_buf;
emit->buf = err_buf;
emit->size = sizeof(err_buf);
return FALSE;
}
emit->size = newsize;
emit->ptr = new_buf + (emit->ptr - emit->buf);
emit->buf = new_buf;
return TRUE;
}
/**
* Create and initialize a new svga_shader_emitter_v10 object.
*/
static struct svga_shader_emitter_v10 *
alloc_emitter(void)
{
struct svga_shader_emitter_v10 *emit = CALLOC(1, sizeof(*emit));
if (!emit)
return NULL;
/* to initialize the output buffer */
emit->size = 512;
if (!expand(emit)) {
FREE(emit);
return NULL;
}
return emit;
}
/**
* Free an svga_shader_emitter_v10 object.
*/
static void
free_emitter(struct svga_shader_emitter_v10 *emit)
{
assert(emit);
FREE(emit->buf); /* will be NULL if translation succeeded */
FREE(emit);
}
static inline boolean
reserve(struct svga_shader_emitter_v10 *emit,
unsigned nr_dwords)
{
while (emit->ptr - emit->buf + nr_dwords * sizeof(uint32) >= emit->size) {
if (!expand(emit))
return FALSE;
}
return TRUE;
}
static boolean
emit_dword(struct svga_shader_emitter_v10 *emit, uint32 dword)
{
if (!reserve(emit, 1))
return FALSE;
*(uint32 *)emit->ptr = dword;
emit->ptr += sizeof dword;
return TRUE;
}
static boolean
emit_dwords(struct svga_shader_emitter_v10 *emit,
const uint32 *dwords,
unsigned nr)
{
if (!reserve(emit, nr))
return FALSE;
memcpy(emit->ptr, dwords, nr * sizeof *dwords);
emit->ptr += nr * sizeof *dwords;
return TRUE;
}
/** Return the number of tokens in the emitter's buffer */
static unsigned
emit_get_num_tokens(const struct svga_shader_emitter_v10 *emit)
{
return (emit->ptr - emit->buf) / sizeof(unsigned);
}
/**
* Check for register overflow. If we overflow we'll set an
* error flag. This function can be called for register declarations
* or use as src/dst instruction operands.
* \param type register type. One of VGPU10_OPERAND_TYPE_x
or VGPU10_OPCODE_DCL_x
* \param index the register index
*/
static void
check_register_index(struct svga_shader_emitter_v10 *emit,
unsigned operandType, unsigned index)
{
bool overflow_before = emit->register_overflow;
switch (operandType) {
case VGPU10_OPERAND_TYPE_TEMP:
case VGPU10_OPERAND_TYPE_INDEXABLE_TEMP:
case VGPU10_OPCODE_DCL_TEMPS:
if (index >= VGPU10_MAX_TEMPS) {
emit->register_overflow = TRUE;
}
break;
case VGPU10_OPERAND_TYPE_CONSTANT_BUFFER:
case VGPU10_OPCODE_DCL_CONSTANT_BUFFER:
if (index >= VGPU10_MAX_CONSTANT_BUFFER_ELEMENT_COUNT) {
emit->register_overflow = TRUE;
}
break;
case VGPU10_OPERAND_TYPE_INPUT:
case VGPU10_OPERAND_TYPE_INPUT_PRIMITIVEID:
case VGPU10_OPCODE_DCL_INPUT:
case VGPU10_OPCODE_DCL_INPUT_SGV:
case VGPU10_OPCODE_DCL_INPUT_SIV:
case VGPU10_OPCODE_DCL_INPUT_PS:
case VGPU10_OPCODE_DCL_INPUT_PS_SGV:
case VGPU10_OPCODE_DCL_INPUT_PS_SIV:
if ((emit->unit == PIPE_SHADER_VERTEX &&
index >= VGPU10_MAX_VS_INPUTS) ||
(emit->unit == PIPE_SHADER_GEOMETRY &&
index >= VGPU10_MAX_GS_INPUTS) ||
(emit->unit == PIPE_SHADER_FRAGMENT &&
index >= VGPU10_MAX_FS_INPUTS)) {
emit->register_overflow = TRUE;
}
break;
case VGPU10_OPERAND_TYPE_OUTPUT:
case VGPU10_OPCODE_DCL_OUTPUT:
case VGPU10_OPCODE_DCL_OUTPUT_SGV:
case VGPU10_OPCODE_DCL_OUTPUT_SIV:
if ((emit->unit == PIPE_SHADER_VERTEX &&
index >= VGPU10_MAX_VS_OUTPUTS) ||
(emit->unit == PIPE_SHADER_GEOMETRY &&
index >= VGPU10_MAX_GS_OUTPUTS) ||
(emit->unit == PIPE_SHADER_FRAGMENT &&
index >= VGPU10_MAX_FS_OUTPUTS)) {
emit->register_overflow = TRUE;
}
break;
case VGPU10_OPERAND_TYPE_SAMPLER:
case VGPU10_OPCODE_DCL_SAMPLER:
if (index >= VGPU10_MAX_SAMPLERS) {
emit->register_overflow = TRUE;
}
break;
case VGPU10_OPERAND_TYPE_RESOURCE:
case VGPU10_OPCODE_DCL_RESOURCE:
if (index >= VGPU10_MAX_RESOURCES) {
emit->register_overflow = TRUE;
}
break;
case VGPU10_OPERAND_TYPE_IMMEDIATE_CONSTANT_BUFFER:
if (index >= MAX_IMMEDIATE_COUNT) {
emit->register_overflow = TRUE;
}
break;
default:
assert(0);
; /* nothing */
}
if (emit->register_overflow && !overflow_before) {
debug_printf("svga: vgpu10 register overflow (reg %u, index %u)\n",
operandType, index);
}
}
/**
* Examine misc state to determine the clipping mode.
*/
static void
determine_clipping_mode(struct svga_shader_emitter_v10 *emit)
{
if (emit->info.num_written_clipdistance > 0) {
emit->clip_mode = CLIP_DISTANCE;
}
else if (emit->info.writes_clipvertex) {
emit->clip_mode = CLIP_VERTEX;
}
else if (emit->key.clip_plane_enable) {
emit->clip_mode = CLIP_LEGACY;
}
else {
emit->clip_mode = CLIP_NONE;
}
}
/**
* For clip distance register declarations and clip distance register
* writes we need to mask the declaration usage or instruction writemask
* (respectively) against the set of the really-enabled clipping planes.
*
* The piglit test spec/glsl-1.30/execution/clipping/vs-clip-distance-enables
* has a VS that writes to all 8 clip distance registers, but the plane enable
* flags are a subset of that.
*
* This function is used to apply the plane enable flags to the register
* declaration or instruction writemask.
*
* \param writemask the declaration usage mask or instruction writemask
* \param clip_reg_index which clip plane register is being declared/written.
* The legal values are 0 and 1 (two clip planes per
* register, for a total of 8 clip planes)
*/
static unsigned
apply_clip_plane_mask(struct svga_shader_emitter_v10 *emit,
unsigned writemask, unsigned clip_reg_index)
{
unsigned shift;
assert(clip_reg_index < 2);
/* four clip planes per clip register: */
shift = clip_reg_index * 4;
writemask &= ((emit->key.clip_plane_enable >> shift) & 0xf);
return writemask;
}
/**
* Translate gallium shader type into VGPU10 type.
*/
static VGPU10_PROGRAM_TYPE
translate_shader_type(unsigned type)
{
switch (type) {
case PIPE_SHADER_VERTEX:
return VGPU10_VERTEX_SHADER;
case PIPE_SHADER_GEOMETRY:
return VGPU10_GEOMETRY_SHADER;
case PIPE_SHADER_FRAGMENT:
return VGPU10_PIXEL_SHADER;
default:
assert(!"Unexpected shader type");
return VGPU10_VERTEX_SHADER;
}
}
/**
* Translate a TGSI_OPCODE_x into a VGPU10_OPCODE_x
* Note: we only need to translate the opcodes for "simple" instructions,
* as seen below. All other opcodes are handled/translated specially.
*/
static VGPU10_OPCODE_TYPE
translate_opcode(unsigned opcode)
{
switch (opcode) {
case TGSI_OPCODE_MOV:
return VGPU10_OPCODE_MOV;
case TGSI_OPCODE_MUL:
return VGPU10_OPCODE_MUL;
case TGSI_OPCODE_ADD:
return VGPU10_OPCODE_ADD;
case TGSI_OPCODE_DP3:
return VGPU10_OPCODE_DP3;
case TGSI_OPCODE_DP4:
return VGPU10_OPCODE_DP4;
case TGSI_OPCODE_MIN:
return VGPU10_OPCODE_MIN;
case TGSI_OPCODE_MAX:
return VGPU10_OPCODE_MAX;
case TGSI_OPCODE_MAD:
return VGPU10_OPCODE_MAD;
case TGSI_OPCODE_SQRT:
return VGPU10_OPCODE_SQRT;
case TGSI_OPCODE_FRC:
return VGPU10_OPCODE_FRC;
case TGSI_OPCODE_FLR:
return VGPU10_OPCODE_ROUND_NI;
case TGSI_OPCODE_FSEQ:
return VGPU10_OPCODE_EQ;
case TGSI_OPCODE_FSGE:
return VGPU10_OPCODE_GE;
case TGSI_OPCODE_FSNE:
return VGPU10_OPCODE_NE;
case TGSI_OPCODE_DDX:
return VGPU10_OPCODE_DERIV_RTX;
case TGSI_OPCODE_DDY:
return VGPU10_OPCODE_DERIV_RTY;
case TGSI_OPCODE_RET:
return VGPU10_OPCODE_RET;
case TGSI_OPCODE_DIV:
return VGPU10_OPCODE_DIV;
case TGSI_OPCODE_IDIV:
return VGPU10_OPCODE_IDIV;
case TGSI_OPCODE_DP2:
return VGPU10_OPCODE_DP2;
case TGSI_OPCODE_BRK:
return VGPU10_OPCODE_BREAK;
case TGSI_OPCODE_IF:
return VGPU10_OPCODE_IF;
case TGSI_OPCODE_ELSE:
return VGPU10_OPCODE_ELSE;
case TGSI_OPCODE_ENDIF:
return VGPU10_OPCODE_ENDIF;
case TGSI_OPCODE_CEIL:
return VGPU10_OPCODE_ROUND_PI;
case TGSI_OPCODE_I2F:
return VGPU10_OPCODE_ITOF;
case TGSI_OPCODE_NOT:
return VGPU10_OPCODE_NOT;
case TGSI_OPCODE_TRUNC:
return VGPU10_OPCODE_ROUND_Z;
case TGSI_OPCODE_SHL:
return VGPU10_OPCODE_ISHL;
case TGSI_OPCODE_AND:
return VGPU10_OPCODE_AND;
case TGSI_OPCODE_OR:
return VGPU10_OPCODE_OR;
case TGSI_OPCODE_XOR:
return VGPU10_OPCODE_XOR;
case TGSI_OPCODE_CONT:
return VGPU10_OPCODE_CONTINUE;
case TGSI_OPCODE_EMIT:
return VGPU10_OPCODE_EMIT;
case TGSI_OPCODE_ENDPRIM:
return VGPU10_OPCODE_CUT;
case TGSI_OPCODE_BGNLOOP:
return VGPU10_OPCODE_LOOP;
case TGSI_OPCODE_ENDLOOP:
return VGPU10_OPCODE_ENDLOOP;
case TGSI_OPCODE_ENDSUB:
return VGPU10_OPCODE_RET;
case TGSI_OPCODE_NOP:
return VGPU10_OPCODE_NOP;
case TGSI_OPCODE_END:
return VGPU10_OPCODE_RET;
case TGSI_OPCODE_F2I:
return VGPU10_OPCODE_FTOI;
case TGSI_OPCODE_IMAX:
return VGPU10_OPCODE_IMAX;
case TGSI_OPCODE_IMIN:
return VGPU10_OPCODE_IMIN;
case TGSI_OPCODE_UDIV:
case TGSI_OPCODE_UMOD:
case TGSI_OPCODE_MOD:
return VGPU10_OPCODE_UDIV;
case TGSI_OPCODE_IMUL_HI:
return VGPU10_OPCODE_IMUL;
case TGSI_OPCODE_INEG:
return VGPU10_OPCODE_INEG;
case TGSI_OPCODE_ISHR:
return VGPU10_OPCODE_ISHR;
case TGSI_OPCODE_ISGE:
return VGPU10_OPCODE_IGE;
case TGSI_OPCODE_ISLT:
return VGPU10_OPCODE_ILT;
case TGSI_OPCODE_F2U:
return VGPU10_OPCODE_FTOU;
case TGSI_OPCODE_UADD:
return VGPU10_OPCODE_IADD;
case TGSI_OPCODE_U2F:
return VGPU10_OPCODE_UTOF;
case TGSI_OPCODE_UCMP:
return VGPU10_OPCODE_MOVC;
case TGSI_OPCODE_UMAD:
return VGPU10_OPCODE_UMAD;
case TGSI_OPCODE_UMAX:
return VGPU10_OPCODE_UMAX;
case TGSI_OPCODE_UMIN:
return VGPU10_OPCODE_UMIN;
case TGSI_OPCODE_UMUL:
case TGSI_OPCODE_UMUL_HI:
return VGPU10_OPCODE_UMUL;
case TGSI_OPCODE_USEQ:
return VGPU10_OPCODE_IEQ;
case TGSI_OPCODE_USGE:
return VGPU10_OPCODE_UGE;
case TGSI_OPCODE_USHR:
return VGPU10_OPCODE_USHR;
case TGSI_OPCODE_USLT:
return VGPU10_OPCODE_ULT;
case TGSI_OPCODE_USNE:
return VGPU10_OPCODE_INE;
case TGSI_OPCODE_SWITCH:
return VGPU10_OPCODE_SWITCH;
case TGSI_OPCODE_CASE:
return VGPU10_OPCODE_CASE;
case TGSI_OPCODE_DEFAULT:
return VGPU10_OPCODE_DEFAULT;
case TGSI_OPCODE_ENDSWITCH:
return VGPU10_OPCODE_ENDSWITCH;
case TGSI_OPCODE_FSLT:
return VGPU10_OPCODE_LT;
case TGSI_OPCODE_ROUND:
return VGPU10_OPCODE_ROUND_NE;
default:
assert(!"Unexpected TGSI opcode in translate_opcode()");
return VGPU10_OPCODE_NOP;
}
}
/**
* Translate a TGSI register file type into a VGPU10 operand type.
* \param array is the TGSI_FILE_TEMPORARY register an array?
*/
static VGPU10_OPERAND_TYPE
translate_register_file(enum tgsi_file_type file, boolean array)
{
switch (file) {
case TGSI_FILE_CONSTANT:
return VGPU10_OPERAND_TYPE_CONSTANT_BUFFER;
case TGSI_FILE_INPUT:
return VGPU10_OPERAND_TYPE_INPUT;
case TGSI_FILE_OUTPUT:
return VGPU10_OPERAND_TYPE_OUTPUT;
case TGSI_FILE_TEMPORARY:
return array ? VGPU10_OPERAND_TYPE_INDEXABLE_TEMP
: VGPU10_OPERAND_TYPE_TEMP;
case TGSI_FILE_IMMEDIATE:
/* all immediates are 32-bit values at this time so
* VGPU10_OPERAND_TYPE_IMMEDIATE64 is not possible at this time.
*/
return VGPU10_OPERAND_TYPE_IMMEDIATE_CONSTANT_BUFFER;
case TGSI_FILE_SAMPLER:
return VGPU10_OPERAND_TYPE_SAMPLER;
case TGSI_FILE_SYSTEM_VALUE:
return VGPU10_OPERAND_TYPE_INPUT;
/* XXX TODO more cases to finish */
default:
assert(!"Bad tgsi register file!");
return VGPU10_OPERAND_TYPE_NULL;
}
}
/**
* Emit a null dst register
*/
static void
emit_null_dst_register(struct svga_shader_emitter_v10 *emit)
{
VGPU10OperandToken0 operand;
operand.value = 0;
operand.operandType = VGPU10_OPERAND_TYPE_NULL;
operand.numComponents = VGPU10_OPERAND_0_COMPONENT;
emit_dword(emit, operand.value);
}
/**
* If the given register is a temporary, return the array ID.
* Else return zero.
*/
static unsigned
get_temp_array_id(const struct svga_shader_emitter_v10 *emit,
enum tgsi_file_type file, unsigned index)
{
if (file == TGSI_FILE_TEMPORARY) {
return emit->temp_map[index].arrayId;
}
else {
return 0;
}
}
/**
* If the given register is a temporary, convert the index from a TGSI
* TEMPORARY index to a VGPU10 temp index.
*/
static unsigned
remap_temp_index(const struct svga_shader_emitter_v10 *emit,
enum tgsi_file_type file, unsigned index)
{
if (file == TGSI_FILE_TEMPORARY) {
return emit->temp_map[index].index;
}
else {
return index;
}
}
/**
* Setup the operand0 fields related to indexing (1D, 2D, relative, etc).
* Note: the operandType field must already be initialized.
*/
static VGPU10OperandToken0
setup_operand0_indexing(struct svga_shader_emitter_v10 *emit,
VGPU10OperandToken0 operand0,
enum tgsi_file_type file,
boolean indirect, boolean index2D,
unsigned tempArrayID)
{
unsigned indexDim, index0Rep, index1Rep = VGPU10_OPERAND_INDEX_IMMEDIATE32;
/*
* Compute index dimensions
*/
if (operand0.operandType == VGPU10_OPERAND_TYPE_IMMEDIATE32 ||
operand0.operandType == VGPU10_OPERAND_TYPE_INPUT_PRIMITIVEID) {
/* there's no swizzle for in-line immediates */
indexDim = VGPU10_OPERAND_INDEX_0D;
assert(operand0.selectionMode == 0);
}
else {
if (index2D ||
tempArrayID > 0 ||
operand0.operandType == VGPU10_OPERAND_TYPE_CONSTANT_BUFFER) {
indexDim = VGPU10_OPERAND_INDEX_2D;
}
else {
indexDim = VGPU10_OPERAND_INDEX_1D;
}
}
/*
* Compute index representations (immediate, relative, etc).
*/
if (tempArrayID > 0) {
assert(file == TGSI_FILE_TEMPORARY);
/* First index is the array ID, second index is the array element */
index0Rep = VGPU10_OPERAND_INDEX_IMMEDIATE32;
if (indirect) {
index1Rep = VGPU10_OPERAND_INDEX_IMMEDIATE32_PLUS_RELATIVE;
}
else {
index1Rep = VGPU10_OPERAND_INDEX_IMMEDIATE32;
}
}
else if (indirect) {
if (file == TGSI_FILE_CONSTANT) {
/* index[0] indicates which constant buffer while index[1] indicates
* the position in the constant buffer.
*/
index0Rep = VGPU10_OPERAND_INDEX_IMMEDIATE32;
index1Rep = VGPU10_OPERAND_INDEX_IMMEDIATE32_PLUS_RELATIVE;
}
else {
/* All other register files are 1-dimensional */
index0Rep = VGPU10_OPERAND_INDEX_IMMEDIATE32_PLUS_RELATIVE;
}
}
else {
index0Rep = VGPU10_OPERAND_INDEX_IMMEDIATE32;
index1Rep = VGPU10_OPERAND_INDEX_IMMEDIATE32;
}
operand0.indexDimension = indexDim;
operand0.index0Representation = index0Rep;
operand0.index1Representation = index1Rep;
return operand0;
}
/**
* Emit the operand for expressing an address register for indirect indexing.
* Note that the address register is really just a temp register.
* \param addr_reg_index which address register to use
*/
static void
emit_indirect_register(struct svga_shader_emitter_v10 *emit,
unsigned addr_reg_index)
{
unsigned tmp_reg_index;
VGPU10OperandToken0 operand0;
assert(addr_reg_index < MAX_VGPU10_ADDR_REGS);
tmp_reg_index = emit->address_reg_index[addr_reg_index];
/* operand0 is a simple temporary register, selecting one component */
operand0.value = 0;
operand0.operandType = VGPU10_OPERAND_TYPE_TEMP;
operand0.numComponents = VGPU10_OPERAND_4_COMPONENT;
operand0.indexDimension = VGPU10_OPERAND_INDEX_1D;
operand0.index0Representation = VGPU10_OPERAND_INDEX_IMMEDIATE32;
operand0.selectionMode = VGPU10_OPERAND_4_COMPONENT_SELECT_1_MODE;
operand0.swizzleX = 0;
operand0.swizzleY = 1;
operand0.swizzleZ = 2;
operand0.swizzleW = 3;
emit_dword(emit, operand0.value);
emit_dword(emit, remap_temp_index(emit, TGSI_FILE_TEMPORARY, tmp_reg_index));
}
/**
* Translate the dst register of a TGSI instruction and emit VGPU10 tokens.
* \param emit the emitter context
* \param reg the TGSI dst register to translate
*/
static void
emit_dst_register(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_dst_register *reg)
{
enum tgsi_file_type file = reg->Register.File;
unsigned index = reg->Register.Index;
const enum tgsi_semantic sem_name = emit->info.output_semantic_name[index];
const unsigned sem_index = emit->info.output_semantic_index[index];
unsigned writemask = reg->Register.WriteMask;
const unsigned indirect = reg->Register.Indirect;
const unsigned tempArrayId = get_temp_array_id(emit, file, index);
const unsigned index2d = reg->Register.Dimension;
VGPU10OperandToken0 operand0;
if (file == TGSI_FILE_OUTPUT) {
if (emit->unit == PIPE_SHADER_VERTEX ||
emit->unit == PIPE_SHADER_GEOMETRY) {
if (index == emit->vposition.out_index &&
emit->vposition.tmp_index != INVALID_INDEX) {
/* replace OUTPUT[POS] with TEMP[POS]. We need to store the
* vertex position result in a temporary so that we can modify
* it in the post_helper() code.
*/
file = TGSI_FILE_TEMPORARY;
index = emit->vposition.tmp_index;
}
else if (sem_name == TGSI_SEMANTIC_CLIPDIST &&
emit->clip_dist_tmp_index != INVALID_INDEX) {
/* replace OUTPUT[CLIPDIST] with TEMP[CLIPDIST].
* We store the clip distance in a temporary first, then
* we'll copy it to the shadow copy and to CLIPDIST with the
* enabled planes mask in emit_clip_distance_instructions().
*/
file = TGSI_FILE_TEMPORARY;
index = emit->clip_dist_tmp_index + sem_index;
}
else if (sem_name == TGSI_SEMANTIC_CLIPVERTEX &&
emit->clip_vertex_tmp_index != INVALID_INDEX) {
/* replace the CLIPVERTEX output register with a temporary */
assert(emit->clip_mode == CLIP_VERTEX);
assert(sem_index == 0);
file = TGSI_FILE_TEMPORARY;
index = emit->clip_vertex_tmp_index;
}
}
else if (emit->unit == PIPE_SHADER_FRAGMENT) {
if (sem_name == TGSI_SEMANTIC_POSITION) {
/* Fragment depth output register */
operand0.value = 0;
operand0.operandType = VGPU10_OPERAND_TYPE_OUTPUT_DEPTH;
operand0.indexDimension = VGPU10_OPERAND_INDEX_0D;
operand0.numComponents = VGPU10_OPERAND_1_COMPONENT;
emit_dword(emit, operand0.value);
return;
}
else if (index == emit->fs.color_out_index[0] &&
emit->fs.color_tmp_index != INVALID_INDEX) {
/* replace OUTPUT[COLOR] with TEMP[COLOR]. We need to store the
* fragment color result in a temporary so that we can read it
* it in the post_helper() code.
*/
file = TGSI_FILE_TEMPORARY;
index = emit->fs.color_tmp_index;
}
else {
/* Typically, for fragment shaders, the output register index
* matches the color semantic index. But not when we write to
* the fragment depth register. In that case, OUT[0] will be
* fragdepth and OUT[1] will be the 0th color output. We need
* to use the semantic index for color outputs.
*/
assert(sem_name == TGSI_SEMANTIC_COLOR);
index = emit->info.output_semantic_index[index];
emit->num_output_writes++;
}
}
}
/* init operand tokens to all zero */
operand0.value = 0;
operand0.numComponents = VGPU10_OPERAND_4_COMPONENT;
/* the operand has a writemask */
operand0.selectionMode = VGPU10_OPERAND_4_COMPONENT_MASK_MODE;
/* Which of the four dest components to write to. Note that we can use a
* simple assignment here since TGSI writemasks match VGPU10 writemasks.
*/
STATIC_ASSERT(TGSI_WRITEMASK_X == VGPU10_OPERAND_4_COMPONENT_MASK_X);
operand0.mask = writemask;
/* translate TGSI register file type to VGPU10 operand type */
operand0.operandType = translate_register_file(file, tempArrayId > 0);
check_register_index(emit, operand0.operandType, index);
operand0 = setup_operand0_indexing(emit, operand0, file, indirect,
index2d, tempArrayId);
/* Emit tokens */
emit_dword(emit, operand0.value);
if (tempArrayId > 0) {
emit_dword(emit, tempArrayId);
}
emit_dword(emit, remap_temp_index(emit, file, index));
if (indirect) {
emit_indirect_register(emit, reg->Indirect.Index);
}
}
/**
* Translate a src register of a TGSI instruction and emit VGPU10 tokens.
*/
static void
emit_src_register(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_src_register *reg)
{
enum tgsi_file_type file = reg->Register.File;
unsigned index = reg->Register.Index;
const unsigned indirect = reg->Register.Indirect;
const unsigned tempArrayId = get_temp_array_id(emit, file, index);
const unsigned index2d = reg->Register.Dimension;
const unsigned swizzleX = reg->Register.SwizzleX;
const unsigned swizzleY = reg->Register.SwizzleY;
const unsigned swizzleZ = reg->Register.SwizzleZ;
const unsigned swizzleW = reg->Register.SwizzleW;
const unsigned absolute = reg->Register.Absolute;
const unsigned negate = reg->Register.Negate;
bool is_prim_id = FALSE;
VGPU10OperandToken0 operand0;
VGPU10OperandToken1 operand1;
if (emit->unit == PIPE_SHADER_FRAGMENT &&
file == TGSI_FILE_INPUT) {
if (index == emit->fs.face_input_index) {
/* Replace INPUT[FACE] with TEMP[FACE] */
file = TGSI_FILE_TEMPORARY;
index = emit->fs.face_tmp_index;
}
else if (index == emit->fs.fragcoord_input_index) {
/* Replace INPUT[POSITION] with TEMP[POSITION] */
file = TGSI_FILE_TEMPORARY;
index = emit->fs.fragcoord_tmp_index;
}
else {
/* We remap fragment shader inputs to that FS input indexes
* match up with VS/GS output indexes.
*/
index = emit->linkage.input_map[index];
}
}
else if (emit->unit == PIPE_SHADER_GEOMETRY &&
file == TGSI_FILE_INPUT) {
is_prim_id = (index == emit->gs.prim_id_index);
index = emit->linkage.input_map[index];
}
else if (emit->unit == PIPE_SHADER_VERTEX) {
if (file == TGSI_FILE_INPUT) {
/* if input is adjusted... */
if ((emit->key.vs.adjust_attrib_w_1 |
emit->key.vs.adjust_attrib_itof |
emit->key.vs.adjust_attrib_utof |
emit->key.vs.attrib_is_bgra |
emit->key.vs.attrib_puint_to_snorm |
emit->key.vs.attrib_puint_to_uscaled |
emit->key.vs.attrib_puint_to_sscaled) & (1 << index)) {
file = TGSI_FILE_TEMPORARY;
index = emit->vs.adjusted_input[index];
}
}
else if (file == TGSI_FILE_SYSTEM_VALUE) {
assert(index < ARRAY_SIZE(emit->system_value_indexes));
index = emit->system_value_indexes[index];
}
}
operand0.value = operand1.value = 0;
if (is_prim_id) {
/* NOTE: we should be using VGPU10_OPERAND_1_COMPONENT here, but
* our virtual GPU accepts this as-is.
*/
operand0.numComponents = VGPU10_OPERAND_0_COMPONENT;
operand0.operandType = VGPU10_OPERAND_TYPE_INPUT_PRIMITIVEID;
}
else {
operand0.numComponents = VGPU10_OPERAND_4_COMPONENT;
operand0.operandType = translate_register_file(file, tempArrayId > 0);
}
operand0 = setup_operand0_indexing(emit, operand0, file, indirect,
index2d, tempArrayId);
if (operand0.operandType != VGPU10_OPERAND_TYPE_IMMEDIATE32 &&
operand0.operandType != VGPU10_OPERAND_TYPE_INPUT_PRIMITIVEID) {
/* there's no swizzle for in-line immediates */
if (swizzleX == swizzleY &&
swizzleX == swizzleZ &&
swizzleX == swizzleW) {
operand0.selectionMode = VGPU10_OPERAND_4_COMPONENT_SELECT_1_MODE;
}
else {
operand0.selectionMode = VGPU10_OPERAND_4_COMPONENT_SWIZZLE_MODE;
}
operand0.swizzleX = swizzleX;
operand0.swizzleY = swizzleY;
operand0.swizzleZ = swizzleZ;
operand0.swizzleW = swizzleW;
if (absolute || negate) {
operand0.extended = 1;
operand1.extendedOperandType = VGPU10_EXTENDED_OPERAND_MODIFIER;
if (absolute && !negate)
operand1.operandModifier = VGPU10_OPERAND_MODIFIER_ABS;
if (!absolute && negate)
operand1.operandModifier = VGPU10_OPERAND_MODIFIER_NEG;
if (absolute && negate)
operand1.operandModifier = VGPU10_OPERAND_MODIFIER_ABSNEG;
}
}
/* Emit the operand tokens */
emit_dword(emit, operand0.value);
if (operand0.extended)
emit_dword(emit, operand1.value);
if (operand0.operandType == VGPU10_OPERAND_TYPE_IMMEDIATE32) {
/* Emit the four float/int in-line immediate values */
unsigned *c;
assert(index < ARRAY_SIZE(emit->immediates));
assert(file == TGSI_FILE_IMMEDIATE);
assert(swizzleX < 4);
assert(swizzleY < 4);
assert(swizzleZ < 4);
assert(swizzleW < 4);
c = (unsigned *) emit->immediates[index];
emit_dword(emit, c[swizzleX]);
emit_dword(emit, c[swizzleY]);
emit_dword(emit, c[swizzleZ]);
emit_dword(emit, c[swizzleW]);
}
else if (operand0.indexDimension >= VGPU10_OPERAND_INDEX_1D) {
/* Emit the register index(es) */
if (index2d ||
operand0.operandType == VGPU10_OPERAND_TYPE_CONSTANT_BUFFER) {
emit_dword(emit, reg->Dimension.Index);
}
if (tempArrayId > 0) {
emit_dword(emit, tempArrayId);
}
emit_dword(emit, remap_temp_index(emit, file, index));
if (indirect) {
emit_indirect_register(emit, reg->Indirect.Index);
}
}
}
/**
* Emit a resource operand (for use with a SAMPLE instruction).
*/
static void
emit_resource_register(struct svga_shader_emitter_v10 *emit,
unsigned resource_number)
{
VGPU10OperandToken0 operand0;
check_register_index(emit, VGPU10_OPERAND_TYPE_RESOURCE, resource_number);
/* init */
operand0.value = 0;
operand0.operandType = VGPU10_OPERAND_TYPE_RESOURCE;
operand0.indexDimension = VGPU10_OPERAND_INDEX_1D;
operand0.numComponents = VGPU10_OPERAND_4_COMPONENT;
operand0.selectionMode = VGPU10_OPERAND_4_COMPONENT_SWIZZLE_MODE;
operand0.swizzleX = VGPU10_COMPONENT_X;
operand0.swizzleY = VGPU10_COMPONENT_Y;
operand0.swizzleZ = VGPU10_COMPONENT_Z;
operand0.swizzleW = VGPU10_COMPONENT_W;
emit_dword(emit, operand0.value);
emit_dword(emit, resource_number);
}
/**
* Emit a sampler operand (for use with a SAMPLE instruction).
*/
static void
emit_sampler_register(struct svga_shader_emitter_v10 *emit,
unsigned sampler_number)
{
VGPU10OperandToken0 operand0;
check_register_index(emit, VGPU10_OPERAND_TYPE_SAMPLER, sampler_number);
/* init */
operand0.value = 0;
operand0.operandType = VGPU10_OPERAND_TYPE_SAMPLER;
operand0.indexDimension = VGPU10_OPERAND_INDEX_1D;
emit_dword(emit, operand0.value);
emit_dword(emit, sampler_number);
}
/**
* Emit an operand which reads the IS_FRONT_FACING register.
*/
static void
emit_face_register(struct svga_shader_emitter_v10 *emit)
{
VGPU10OperandToken0 operand0;
unsigned index = emit->linkage.input_map[emit->fs.face_input_index];
/* init */
operand0.value = 0;
operand0.operandType = VGPU10_OPERAND_TYPE_INPUT;
operand0.indexDimension = VGPU10_OPERAND_INDEX_1D;
operand0.selectionMode = VGPU10_OPERAND_4_COMPONENT_SELECT_1_MODE;
operand0.numComponents = VGPU10_OPERAND_4_COMPONENT;
operand0.swizzleX = VGPU10_COMPONENT_X;
operand0.swizzleY = VGPU10_COMPONENT_X;
operand0.swizzleZ = VGPU10_COMPONENT_X;
operand0.swizzleW = VGPU10_COMPONENT_X;
emit_dword(emit, operand0.value);
emit_dword(emit, index);
}
/**
* Emit the token for a VGPU10 opcode.
* \param saturate clamp result to [0,1]?
*/
static void
emit_opcode(struct svga_shader_emitter_v10 *emit,
unsigned vgpu10_opcode, boolean saturate)
{
VGPU10OpcodeToken0 token0;
token0.value = 0; /* init all fields to zero */
token0.opcodeType = vgpu10_opcode;
token0.instructionLength = 0; /* Filled in by end_emit_instruction() */
token0.saturate = saturate;
emit_dword(emit, token0.value);
}
/**
* Emit the token for a VGPU10 resinfo instruction.
* \param modifier return type modifier, _uint or _rcpFloat.
* TODO: We may want to remove this parameter if it will
* only ever be used as _uint.
*/
static void
emit_opcode_resinfo(struct svga_shader_emitter_v10 *emit,
VGPU10_RESINFO_RETURN_TYPE modifier)
{
VGPU10OpcodeToken0 token0;
token0.value = 0; /* init all fields to zero */
token0.opcodeType = VGPU10_OPCODE_RESINFO;
token0.instructionLength = 0; /* Filled in by end_emit_instruction() */
token0.resinfoReturnType = modifier;
emit_dword(emit, token0.value);
}
/**
* Emit opcode tokens for a texture sample instruction. Texture instructions
* can be rather complicated (texel offsets, etc) so we have this specialized
* function.
*/
static void
emit_sample_opcode(struct svga_shader_emitter_v10 *emit,
unsigned vgpu10_opcode, boolean saturate,
const int offsets[3])
{
VGPU10OpcodeToken0 token0;
VGPU10OpcodeToken1 token1;
token0.value = 0; /* init all fields to zero */
token0.opcodeType = vgpu10_opcode;
token0.instructionLength = 0; /* Filled in by end_emit_instruction() */
token0.saturate = saturate;
if (offsets[0] || offsets[1] || offsets[2]) {
assert(offsets[0] >= VGPU10_MIN_TEXEL_FETCH_OFFSET);
assert(offsets[1] >= VGPU10_MIN_TEXEL_FETCH_OFFSET);
assert(offsets[2] >= VGPU10_MIN_TEXEL_FETCH_OFFSET);
assert(offsets[0] <= VGPU10_MAX_TEXEL_FETCH_OFFSET);
assert(offsets[1] <= VGPU10_MAX_TEXEL_FETCH_OFFSET);
assert(offsets[2] <= VGPU10_MAX_TEXEL_FETCH_OFFSET);
token0.extended = 1;
token1.value = 0;
token1.opcodeType = VGPU10_EXTENDED_OPCODE_SAMPLE_CONTROLS;
token1.offsetU = offsets[0];
token1.offsetV = offsets[1];
token1.offsetW = offsets[2];
}
emit_dword(emit, token0.value);
if (token0.extended) {
emit_dword(emit, token1.value);
}
}
/**
* Emit a DISCARD opcode token.
* If nonzero is set, we'll discard the fragment if the X component is not 0.
* Otherwise, we'll discard the fragment if the X component is 0.
*/
static void
emit_discard_opcode(struct svga_shader_emitter_v10 *emit, boolean nonzero)
{
VGPU10OpcodeToken0 opcode0;
opcode0.value = 0;
opcode0.opcodeType = VGPU10_OPCODE_DISCARD;
if (nonzero)
opcode0.testBoolean = VGPU10_INSTRUCTION_TEST_NONZERO;
emit_dword(emit, opcode0.value);
}
/**
* We need to call this before we begin emitting a VGPU10 instruction.
*/
static void
begin_emit_instruction(struct svga_shader_emitter_v10 *emit)
{
assert(emit->inst_start_token == 0);
/* Save location of the instruction's VGPU10OpcodeToken0 token.
* Note, we can't save a pointer because it would become invalid if
* we have to realloc the output buffer.
*/
emit->inst_start_token = emit_get_num_tokens(emit);
}
/**
* We need to call this after we emit the last token of a VGPU10 instruction.
* This function patches in the opcode token's instructionLength field.
*/
static void
end_emit_instruction(struct svga_shader_emitter_v10 *emit)
{
VGPU10OpcodeToken0 *tokens = (VGPU10OpcodeToken0 *) emit->buf;
unsigned inst_length;
assert(emit->inst_start_token > 0);
if (emit->discard_instruction) {
/* Back up the emit->ptr to where this instruction started so
* that we discard the current instruction.
*/
emit->ptr = (char *) (tokens + emit->inst_start_token);
}
else {
/* Compute instruction length and patch that into the start of
* the instruction.
*/
inst_length = emit_get_num_tokens(emit) - emit->inst_start_token;
assert(inst_length > 0);
tokens[emit->inst_start_token].instructionLength = inst_length;
}
emit->inst_start_token = 0; /* reset to zero for error checking */
emit->discard_instruction = FALSE;
}
/**
* Return index for a free temporary register.
*/
static unsigned
get_temp_index(struct svga_shader_emitter_v10 *emit)
{
assert(emit->internal_temp_count < MAX_INTERNAL_TEMPS);
return emit->num_shader_temps + emit->internal_temp_count++;
}
/**
* Release the temporaries which were generated by get_temp_index().
*/
static void
free_temp_indexes(struct svga_shader_emitter_v10 *emit)
{
emit->internal_temp_count = 0;
}
/**
* Create a tgsi_full_src_register.
*/
static struct tgsi_full_src_register
make_src_reg(enum tgsi_file_type file, unsigned index)
{
struct tgsi_full_src_register reg;
memset(®, 0, sizeof(reg));
reg.Register.File = file;
reg.Register.Index = index;
reg.Register.SwizzleX = TGSI_SWIZZLE_X;
reg.Register.SwizzleY = TGSI_SWIZZLE_Y;
reg.Register.SwizzleZ = TGSI_SWIZZLE_Z;
reg.Register.SwizzleW = TGSI_SWIZZLE_W;
return reg;
}
/**
* Create a tgsi_full_src_register for a temporary.
*/
static struct tgsi_full_src_register
make_src_temp_reg(unsigned index)
{
return make_src_reg(TGSI_FILE_TEMPORARY, index);
}
/**
* Create a tgsi_full_src_register for a constant.
*/
static struct tgsi_full_src_register
make_src_const_reg(unsigned index)
{
return make_src_reg(TGSI_FILE_CONSTANT, index);
}
/**
* Create a tgsi_full_src_register for an immediate constant.
*/
static struct tgsi_full_src_register
make_src_immediate_reg(unsigned index)
{
return make_src_reg(TGSI_FILE_IMMEDIATE, index);
}
/**
* Create a tgsi_full_dst_register.
*/
static struct tgsi_full_dst_register
make_dst_reg(enum tgsi_file_type file, unsigned index)
{
struct tgsi_full_dst_register reg;
memset(®, 0, sizeof(reg));
reg.Register.File = file;
reg.Register.Index = index;
reg.Register.WriteMask = TGSI_WRITEMASK_XYZW;
return reg;
}
/**
* Create a tgsi_full_dst_register for a temporary.
*/
static struct tgsi_full_dst_register
make_dst_temp_reg(unsigned index)
{
return make_dst_reg(TGSI_FILE_TEMPORARY, index);
}
/**
* Create a tgsi_full_dst_register for an output.
*/
static struct tgsi_full_dst_register
make_dst_output_reg(unsigned index)
{
return make_dst_reg(TGSI_FILE_OUTPUT, index);
}
/**
* Create negated tgsi_full_src_register.
*/
static struct tgsi_full_src_register
negate_src(const struct tgsi_full_src_register *reg)
{
struct tgsi_full_src_register neg = *reg;
neg.Register.Negate = !reg->Register.Negate;
return neg;
}
/**
* Create absolute value of a tgsi_full_src_register.
*/
static struct tgsi_full_src_register
absolute_src(const struct tgsi_full_src_register *reg)
{
struct tgsi_full_src_register absolute = *reg;
absolute.Register.Absolute = 1;
return absolute;
}
/** Return the named swizzle term from the src register */
static inline unsigned
get_swizzle(const struct tgsi_full_src_register *reg, enum tgsi_swizzle term)
{
switch (term) {
case TGSI_SWIZZLE_X:
return reg->Register.SwizzleX;
case TGSI_SWIZZLE_Y:
return reg->Register.SwizzleY;
case TGSI_SWIZZLE_Z:
return reg->Register.SwizzleZ;
case TGSI_SWIZZLE_W:
return reg->Register.SwizzleW;
default:
assert(!"Bad swizzle");
return TGSI_SWIZZLE_X;
}
}
/**
* Create swizzled tgsi_full_src_register.
*/
static struct tgsi_full_src_register
swizzle_src(const struct tgsi_full_src_register *reg,
enum tgsi_swizzle swizzleX, enum tgsi_swizzle swizzleY,
enum tgsi_swizzle swizzleZ, enum tgsi_swizzle swizzleW)
{
struct tgsi_full_src_register swizzled = *reg;
/* Note: we swizzle the current swizzle */
swizzled.Register.SwizzleX = get_swizzle(reg, swizzleX);
swizzled.Register.SwizzleY = get_swizzle(reg, swizzleY);
swizzled.Register.SwizzleZ = get_swizzle(reg, swizzleZ);
swizzled.Register.SwizzleW = get_swizzle(reg, swizzleW);
return swizzled;
}
/**
* Create swizzled tgsi_full_src_register where all the swizzle
* terms are the same.
*/
static struct tgsi_full_src_register
scalar_src(const struct tgsi_full_src_register *reg, enum tgsi_swizzle swizzle)
{
struct tgsi_full_src_register swizzled = *reg;
/* Note: we swizzle the current swizzle */
swizzled.Register.SwizzleX =
swizzled.Register.SwizzleY =
swizzled.Register.SwizzleZ =
swizzled.Register.SwizzleW = get_swizzle(reg, swizzle);
return swizzled;
}
/**
* Create new tgsi_full_dst_register with writemask.
* \param mask bitmask of TGSI_WRITEMASK_[XYZW]
*/
static struct tgsi_full_dst_register
writemask_dst(const struct tgsi_full_dst_register *reg, unsigned mask)
{
struct tgsi_full_dst_register masked = *reg;
masked.Register.WriteMask = mask;
return masked;
}
/**
* Check if the register's swizzle is XXXX, YYYY, ZZZZ, or WWWW.
*/
static boolean
same_swizzle_terms(const struct tgsi_full_src_register *reg)
{
return (reg->Register.SwizzleX == reg->Register.SwizzleY &&
reg->Register.SwizzleY == reg->Register.SwizzleZ &&
reg->Register.SwizzleZ == reg->Register.SwizzleW);
}
/**
* Search the vector for the value 'x' and return its position.
*/
static int
find_imm_in_vec4(const union tgsi_immediate_data vec[4],
union tgsi_immediate_data x)
{
unsigned i;
for (i = 0; i < 4; i++) {
if (vec[i].Int == x.Int)
return i;
}
return -1;
}
/**
* Helper used by make_immediate_reg(), make_immediate_reg_4().
*/
static int
find_immediate(struct svga_shader_emitter_v10 *emit,
union tgsi_immediate_data x, unsigned startIndex)
{
const unsigned endIndex = emit->num_immediates;
unsigned i;
assert(emit->immediates_emitted);
/* Search immediates for x, y, z, w */
for (i = startIndex; i < endIndex; i++) {
if (x.Int == emit->immediates[i][0].Int ||
x.Int == emit->immediates[i][1].Int ||
x.Int == emit->immediates[i][2].Int ||
x.Int == emit->immediates[i][3].Int) {
return i;
}
}
/* Should never try to use an immediate value that wasn't pre-declared */
assert(!"find_immediate() failed!");
return -1;
}
/**
* Return a tgsi_full_src_register for an immediate/literal
* union tgsi_immediate_data[4] value.
* Note: the values must have been previously declared/allocated in
* emit_pre_helpers(). And, all of x,y,z,w must be located in the same
* vec4 immediate.
*/
static struct tgsi_full_src_register
make_immediate_reg_4(struct svga_shader_emitter_v10 *emit,
const union tgsi_immediate_data imm[4])
{
struct tgsi_full_src_register reg;
unsigned i;
for (i = 0; i < emit->num_common_immediates; i++) {
/* search for first component value */
int immpos = find_immediate(emit, imm[0], i);
int x, y, z, w;
assert(immpos >= 0);
/* find remaining components within the immediate vector */
x = find_imm_in_vec4(emit->immediates[immpos], imm[0]);
y = find_imm_in_vec4(emit->immediates[immpos], imm[1]);
z = find_imm_in_vec4(emit->immediates[immpos], imm[2]);
w = find_imm_in_vec4(emit->immediates[immpos], imm[3]);
if (x >=0 && y >= 0 && z >= 0 && w >= 0) {
/* found them all */
memset(®, 0, sizeof(reg));
reg.Register.File = TGSI_FILE_IMMEDIATE;
reg.Register.Index = immpos;
reg.Register.SwizzleX = x;
reg.Register.SwizzleY = y;
reg.Register.SwizzleZ = z;
reg.Register.SwizzleW = w;
return reg;
}
/* else, keep searching */
}
assert(!"Failed to find immediate register!");
/* Just return IMM[0].xxxx */
memset(®, 0, sizeof(reg));
reg.Register.File = TGSI_FILE_IMMEDIATE;
return reg;
}
/**
* Return a tgsi_full_src_register for an immediate/literal
* union tgsi_immediate_data value of the form {value, value, value, value}.
* \sa make_immediate_reg_4() regarding allowed values.
*/
static struct tgsi_full_src_register
make_immediate_reg(struct svga_shader_emitter_v10 *emit,
union tgsi_immediate_data value)
{
struct tgsi_full_src_register reg;
int immpos = find_immediate(emit, value, 0);
assert(immpos >= 0);
memset(®, 0, sizeof(reg));
reg.Register.File = TGSI_FILE_IMMEDIATE;
reg.Register.Index = immpos;
reg.Register.SwizzleX =
reg.Register.SwizzleY =
reg.Register.SwizzleZ =
reg.Register.SwizzleW = find_imm_in_vec4(emit->immediates[immpos], value);
return reg;
}
/**
* Return a tgsi_full_src_register for an immediate/literal float[4] value.
* \sa make_immediate_reg_4() regarding allowed values.
*/
static struct tgsi_full_src_register
make_immediate_reg_float4(struct svga_shader_emitter_v10 *emit,
float x, float y, float z, float w)
{
union tgsi_immediate_data imm[4];
imm[0].Float = x;
imm[1].Float = y;
imm[2].Float = z;
imm[3].Float = w;
return make_immediate_reg_4(emit, imm);
}
/**
* Return a tgsi_full_src_register for an immediate/literal float value
* of the form {value, value, value, value}.
* \sa make_immediate_reg_4() regarding allowed values.
*/
static struct tgsi_full_src_register
make_immediate_reg_float(struct svga_shader_emitter_v10 *emit, float value)
{
union tgsi_immediate_data imm;
imm.Float = value;
return make_immediate_reg(emit, imm);
}
/**
* Return a tgsi_full_src_register for an immediate/literal int[4] vector.
*/
static struct tgsi_full_src_register
make_immediate_reg_int4(struct svga_shader_emitter_v10 *emit,
int x, int y, int z, int w)
{
union tgsi_immediate_data imm[4];
imm[0].Int = x;
imm[1].Int = y;
imm[2].Int = z;
imm[3].Int = w;
return make_immediate_reg_4(emit, imm);
}
/**
* Return a tgsi_full_src_register for an immediate/literal int value
* of the form {value, value, value, value}.
* \sa make_immediate_reg_4() regarding allowed values.
*/
static struct tgsi_full_src_register
make_immediate_reg_int(struct svga_shader_emitter_v10 *emit, int value)
{
union tgsi_immediate_data imm;
imm.Int = value;
return make_immediate_reg(emit, imm);
}
/**
* Allocate space for a union tgsi_immediate_data[4] immediate.
* \return the index/position of the immediate.
*/
static unsigned
alloc_immediate_4(struct svga_shader_emitter_v10 *emit,
const union tgsi_immediate_data imm[4])
{
unsigned n = emit->num_immediates++;
assert(!emit->immediates_emitted);
assert(n < ARRAY_SIZE(emit->immediates));
emit->immediates[n][0] = imm[0];
emit->immediates[n][1] = imm[1];
emit->immediates[n][2] = imm[2];
emit->immediates[n][3] = imm[3];
return n;
}
/**
* Allocate space for a float[4] immediate.
* \return the index/position of the immediate.
*/
static unsigned
alloc_immediate_float4(struct svga_shader_emitter_v10 *emit,
float x, float y, float z, float w)
{
union tgsi_immediate_data imm[4];
imm[0].Float = x;
imm[1].Float = y;
imm[2].Float = z;
imm[3].Float = w;
return alloc_immediate_4(emit, imm);
}
/**
* Allocate space for an int[4] immediate.
* \return the index/position of the immediate.
*/
static unsigned
alloc_immediate_int4(struct svga_shader_emitter_v10 *emit,
int x, int y, int z, int w)
{
union tgsi_immediate_data imm[4];
imm[0].Int = x;
imm[1].Int = y;
imm[2].Int = z;
imm[3].Int = w;
return alloc_immediate_4(emit, imm);
}
/**
* Allocate a shader input to store a system value.
*/
static unsigned
alloc_system_value_index(struct svga_shader_emitter_v10 *emit, unsigned index)
{
const unsigned n = emit->info.file_max[TGSI_FILE_INPUT] + 1 + index;
assert(index < ARRAY_SIZE(emit->system_value_indexes));
emit->system_value_indexes[index] = n;
return n;
}
/**
* Translate a TGSI immediate value (union tgsi_immediate_data[4]) to VGPU10.
*/
static boolean
emit_vgpu10_immediate(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_immediate *imm)
{
/* We don't actually emit any code here. We just save the
* immediate values and emit them later.
*/
alloc_immediate_4(emit, imm->u);
return TRUE;
}
/**
* Emit a VGPU10_CUSTOMDATA_DCL_IMMEDIATE_CONSTANT_BUFFER block
* containing all the immediate values previously allocated
* with alloc_immediate_4().
*/
static boolean
emit_vgpu10_immediates_block(struct svga_shader_emitter_v10 *emit)
{
VGPU10OpcodeToken0 token;
assert(!emit->immediates_emitted);
token.value = 0;
token.opcodeType = VGPU10_OPCODE_CUSTOMDATA;
token.customDataClass = VGPU10_CUSTOMDATA_DCL_IMMEDIATE_CONSTANT_BUFFER;
/* Note: no begin/end_emit_instruction() calls */
emit_dword(emit, token.value);
emit_dword(emit, 2 + 4 * emit->num_immediates);
emit_dwords(emit, (unsigned *) emit->immediates, 4 * emit->num_immediates);
emit->immediates_emitted = TRUE;
return TRUE;
}
/**
* Translate a fragment shader's TGSI_INTERPOLATE_x mode to a vgpu10
* interpolation mode.
* \return a VGPU10_INTERPOLATION_x value
*/
static unsigned
translate_interpolation(const struct svga_shader_emitter_v10 *emit,
enum tgsi_interpolate_mode interp,
enum tgsi_interpolate_loc interpolate_loc)
{
if (interp == TGSI_INTERPOLATE_COLOR) {
interp = emit->key.fs.flatshade ?
TGSI_INTERPOLATE_CONSTANT : TGSI_INTERPOLATE_PERSPECTIVE;
}
switch (interp) {
case TGSI_INTERPOLATE_CONSTANT:
return VGPU10_INTERPOLATION_CONSTANT;
case TGSI_INTERPOLATE_LINEAR:
return interpolate_loc == TGSI_INTERPOLATE_LOC_CENTROID ?
VGPU10_INTERPOLATION_LINEAR_NOPERSPECTIVE_CENTROID :
VGPU10_INTERPOLATION_LINEAR_NOPERSPECTIVE;
case TGSI_INTERPOLATE_PERSPECTIVE:
return interpolate_loc == TGSI_INTERPOLATE_LOC_CENTROID ?
VGPU10_INTERPOLATION_LINEAR_CENTROID :
VGPU10_INTERPOLATION_LINEAR;
default:
assert(!"Unexpected interpolation mode");
return VGPU10_INTERPOLATION_CONSTANT;
}
}
/**
* Translate a TGSI property to VGPU10.
* Don't emit any instructions yet, only need to gather the primitive property
* information. The output primitive topology might be changed later. The
* final property instructions will be emitted as part of the pre-helper code.
*/
static boolean
emit_vgpu10_property(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_property *prop)
{
static const VGPU10_PRIMITIVE primType[] = {
VGPU10_PRIMITIVE_POINT, /* PIPE_PRIM_POINTS */
VGPU10_PRIMITIVE_LINE, /* PIPE_PRIM_LINES */
VGPU10_PRIMITIVE_LINE, /* PIPE_PRIM_LINE_LOOP */
VGPU10_PRIMITIVE_LINE, /* PIPE_PRIM_LINE_STRIP */
VGPU10_PRIMITIVE_TRIANGLE, /* PIPE_PRIM_TRIANGLES */
VGPU10_PRIMITIVE_TRIANGLE, /* PIPE_PRIM_TRIANGLE_STRIP */
VGPU10_PRIMITIVE_TRIANGLE, /* PIPE_PRIM_TRIANGLE_FAN */
VGPU10_PRIMITIVE_UNDEFINED, /* PIPE_PRIM_QUADS */
VGPU10_PRIMITIVE_UNDEFINED, /* PIPE_PRIM_QUAD_STRIP */
VGPU10_PRIMITIVE_UNDEFINED, /* PIPE_PRIM_POLYGON */
VGPU10_PRIMITIVE_LINE_ADJ, /* PIPE_PRIM_LINES_ADJACENCY */
VGPU10_PRIMITIVE_LINE_ADJ, /* PIPE_PRIM_LINE_STRIP_ADJACENCY */
VGPU10_PRIMITIVE_TRIANGLE_ADJ, /* PIPE_PRIM_TRIANGLES_ADJACENCY */
VGPU10_PRIMITIVE_TRIANGLE_ADJ /* PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY */
};
static const VGPU10_PRIMITIVE_TOPOLOGY primTopology[] = {
VGPU10_PRIMITIVE_TOPOLOGY_POINTLIST, /* PIPE_PRIM_POINTS */
VGPU10_PRIMITIVE_TOPOLOGY_LINELIST, /* PIPE_PRIM_LINES */
VGPU10_PRIMITIVE_TOPOLOGY_LINELIST, /* PIPE_PRIM_LINE_LOOP */
VGPU10_PRIMITIVE_TOPOLOGY_LINESTRIP, /* PIPE_PRIM_LINE_STRIP */
VGPU10_PRIMITIVE_TOPOLOGY_TRIANGLELIST, /* PIPE_PRIM_TRIANGLES */
VGPU10_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP, /* PIPE_PRIM_TRIANGLE_STRIP */
VGPU10_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP, /* PIPE_PRIM_TRIANGLE_FAN */
VGPU10_PRIMITIVE_TOPOLOGY_UNDEFINED, /* PIPE_PRIM_QUADS */
VGPU10_PRIMITIVE_TOPOLOGY_UNDEFINED, /* PIPE_PRIM_QUAD_STRIP */
VGPU10_PRIMITIVE_TOPOLOGY_UNDEFINED, /* PIPE_PRIM_POLYGON */
VGPU10_PRIMITIVE_TOPOLOGY_LINELIST_ADJ, /* PIPE_PRIM_LINES_ADJACENCY */
VGPU10_PRIMITIVE_TOPOLOGY_LINELIST_ADJ, /* PIPE_PRIM_LINE_STRIP_ADJACENCY */
VGPU10_PRIMITIVE_TOPOLOGY_TRIANGLELIST_ADJ, /* PIPE_PRIM_TRIANGLES_ADJACENCY */
VGPU10_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP_ADJ /* PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY */
};
static const unsigned inputArraySize[] = {
0, /* VGPU10_PRIMITIVE_UNDEFINED */
1, /* VGPU10_PRIMITIVE_POINT */
2, /* VGPU10_PRIMITIVE_LINE */
3, /* VGPU10_PRIMITIVE_TRIANGLE */
0,
0,
4, /* VGPU10_PRIMITIVE_LINE_ADJ */
6 /* VGPU10_PRIMITIVE_TRIANGLE_ADJ */
};
switch (prop->Property.PropertyName) {
case TGSI_PROPERTY_GS_INPUT_PRIM:
assert(prop->u[0].Data < ARRAY_SIZE(primType));
emit->gs.prim_type = primType[prop->u[0].Data];
assert(emit->gs.prim_type != VGPU10_PRIMITIVE_UNDEFINED);
emit->gs.input_size = inputArraySize[emit->gs.prim_type];
break;
case TGSI_PROPERTY_GS_OUTPUT_PRIM:
assert(prop->u[0].Data < ARRAY_SIZE(primTopology));
emit->gs.prim_topology = primTopology[prop->u[0].Data];
assert(emit->gs.prim_topology != VGPU10_PRIMITIVE_TOPOLOGY_UNDEFINED);
break;
case TGSI_PROPERTY_GS_MAX_OUTPUT_VERTICES:
emit->gs.max_out_vertices = prop->u[0].Data;
break;
default:
break;
}
return TRUE;
}
static void
emit_property_instruction(struct svga_shader_emitter_v10 *emit,
VGPU10OpcodeToken0 opcode0, unsigned nData,
unsigned data)
{
begin_emit_instruction(emit);
emit_dword(emit, opcode0.value);
if (nData)
emit_dword(emit, data);
end_emit_instruction(emit);
}
/**
* Emit property instructions
*/
static void
emit_property_instructions(struct svga_shader_emitter_v10 *emit)
{
VGPU10OpcodeToken0 opcode0;
assert(emit->unit == PIPE_SHADER_GEOMETRY);
/* emit input primitive type declaration */
opcode0.value = 0;
opcode0.opcodeType = VGPU10_OPCODE_DCL_GS_INPUT_PRIMITIVE;
opcode0.primitive = emit->gs.prim_type;
emit_property_instruction(emit, opcode0, 0, 0);
/* emit output primitive topology declaration */
opcode0.value = 0;
opcode0.opcodeType = VGPU10_OPCODE_DCL_GS_OUTPUT_PRIMITIVE_TOPOLOGY;
opcode0.primitiveTopology = emit->gs.prim_topology;
emit_property_instruction(emit, opcode0, 0, 0);
/* emit max output vertices */
opcode0.value = 0;
opcode0.opcodeType = VGPU10_OPCODE_DCL_MAX_OUTPUT_VERTEX_COUNT;
emit_property_instruction(emit, opcode0, 1, emit->gs.max_out_vertices);
}
/**
* Emit a vgpu10 declaration "instruction".
* \param index the register index
* \param size array size of the operand. In most cases, it is 1,
* but for inputs to geometry shader, the array size varies
* depending on the primitive type.
*/
static void
emit_decl_instruction(struct svga_shader_emitter_v10 *emit,
VGPU10OpcodeToken0 opcode0,
VGPU10OperandToken0 operand0,
VGPU10NameToken name_token,
unsigned index, unsigned size)
{
assert(opcode0.opcodeType);
assert(operand0.mask);
begin_emit_instruction(emit);
emit_dword(emit, opcode0.value);
emit_dword(emit, operand0.value);
if (operand0.indexDimension == VGPU10_OPERAND_INDEX_1D) {
/* Next token is the index of the register to declare */
emit_dword(emit, index);
}
else if (operand0.indexDimension >= VGPU10_OPERAND_INDEX_2D) {
/* Next token is the size of the register */
emit_dword(emit, size);
/* Followed by the index of the register */
emit_dword(emit, index);
}
if (name_token.value) {
emit_dword(emit, name_token.value);
}
end_emit_instruction(emit);
}
/**
* Emit the declaration for a shader input.
* \param opcodeType opcode type, one of VGPU10_OPCODE_DCL_INPUTx
* \param operandType operand type, one of VGPU10_OPERAND_TYPE_INPUT_x
* \param dim index dimension
* \param index the input register index
* \param size array size of the operand. In most cases, it is 1,
* but for inputs to geometry shader, the array size varies
* depending on the primitive type.
* \param name one of VGPU10_NAME_x
* \parma numComp number of components
* \param selMode component selection mode
* \param usageMask bitfield of VGPU10_OPERAND_4_COMPONENT_MASK_x values
* \param interpMode interpolation mode
*/
static void
emit_input_declaration(struct svga_shader_emitter_v10 *emit,
unsigned opcodeType, unsigned operandType,
unsigned dim, unsigned index, unsigned size,
unsigned name, unsigned numComp,
unsigned selMode, unsigned usageMask,
unsigned interpMode)
{
VGPU10OpcodeToken0 opcode0;
VGPU10OperandToken0 operand0;
VGPU10NameToken name_token;
assert(usageMask <= VGPU10_OPERAND_4_COMPONENT_MASK_ALL);
assert(opcodeType == VGPU10_OPCODE_DCL_INPUT ||
opcodeType == VGPU10_OPCODE_DCL_INPUT_SIV ||
opcodeType == VGPU10_OPCODE_DCL_INPUT_PS ||
opcodeType == VGPU10_OPCODE_DCL_INPUT_PS_SGV);
assert(operandType == VGPU10_OPERAND_TYPE_INPUT ||
operandType == VGPU10_OPERAND_TYPE_INPUT_PRIMITIVEID);
assert(numComp <= VGPU10_OPERAND_4_COMPONENT);
assert(selMode <= VGPU10_OPERAND_4_COMPONENT_MASK_MODE);
assert(dim <= VGPU10_OPERAND_INDEX_3D);
assert(name == VGPU10_NAME_UNDEFINED ||
name == VGPU10_NAME_POSITION ||
name == VGPU10_NAME_INSTANCE_ID ||
name == VGPU10_NAME_VERTEX_ID ||
name == VGPU10_NAME_PRIMITIVE_ID ||
name == VGPU10_NAME_IS_FRONT_FACE);
assert(interpMode == VGPU10_INTERPOLATION_UNDEFINED ||
interpMode == VGPU10_INTERPOLATION_CONSTANT ||
interpMode == VGPU10_INTERPOLATION_LINEAR ||
interpMode == VGPU10_INTERPOLATION_LINEAR_CENTROID ||
interpMode == VGPU10_INTERPOLATION_LINEAR_NOPERSPECTIVE ||
interpMode == VGPU10_INTERPOLATION_LINEAR_NOPERSPECTIVE_CENTROID);
check_register_index(emit, opcodeType, index);
opcode0.value = operand0.value = name_token.value = 0;
opcode0.opcodeType = opcodeType;
opcode0.interpolationMode = interpMode;
operand0.operandType = operandType;
operand0.numComponents = numComp;
operand0.selectionMode = selMode;
operand0.mask = usageMask;
operand0.indexDimension = dim;
operand0.index0Representation = VGPU10_OPERAND_INDEX_IMMEDIATE32;
if (dim == VGPU10_OPERAND_INDEX_2D)
operand0.index1Representation = VGPU10_OPERAND_INDEX_IMMEDIATE32;
name_token.name = name;
emit_decl_instruction(emit, opcode0, operand0, name_token, index, size);
}
/**
* Emit the declaration for a shader output.
* \param type one of VGPU10_OPCODE_DCL_OUTPUTx
* \param index the output register index
* \param name one of VGPU10_NAME_x
* \param usageMask bitfield of VGPU10_OPERAND_4_COMPONENT_MASK_x values
*/
static void
emit_output_declaration(struct svga_shader_emitter_v10 *emit,
unsigned type, unsigned index,
unsigned name, unsigned usageMask)
{
VGPU10OpcodeToken0 opcode0;
VGPU10OperandToken0 operand0;
VGPU10NameToken name_token;
assert(usageMask <= VGPU10_OPERAND_4_COMPONENT_MASK_ALL);
assert(type == VGPU10_OPCODE_DCL_OUTPUT ||
type == VGPU10_OPCODE_DCL_OUTPUT_SGV ||
type == VGPU10_OPCODE_DCL_OUTPUT_SIV);
assert(name == VGPU10_NAME_UNDEFINED ||
name == VGPU10_NAME_POSITION ||
name == VGPU10_NAME_PRIMITIVE_ID ||
name == VGPU10_NAME_RENDER_TARGET_ARRAY_INDEX ||
name == VGPU10_NAME_CLIP_DISTANCE);
check_register_index(emit, type, index);
opcode0.value = operand0.value = name_token.value = 0;
opcode0.opcodeType = type;
operand0.operandType = VGPU10_OPERAND_TYPE_OUTPUT;
operand0.numComponents = VGPU10_OPERAND_4_COMPONENT;
operand0.selectionMode = VGPU10_OPERAND_4_COMPONENT_MASK_MODE;
operand0.mask = usageMask;
operand0.indexDimension = VGPU10_OPERAND_INDEX_1D;
operand0.index0Representation = VGPU10_OPERAND_INDEX_IMMEDIATE32;
name_token.name = name;
emit_decl_instruction(emit, opcode0, operand0, name_token, index, 1);
}
/**
* Emit the declaration for the fragment depth output.
*/
static void
emit_fragdepth_output_declaration(struct svga_shader_emitter_v10 *emit)
{
VGPU10OpcodeToken0 opcode0;
VGPU10OperandToken0 operand0;
VGPU10NameToken name_token;
assert(emit->unit == PIPE_SHADER_FRAGMENT);
opcode0.value = operand0.value = name_token.value = 0;
opcode0.opcodeType = VGPU10_OPCODE_DCL_OUTPUT;
operand0.operandType = VGPU10_OPERAND_TYPE_OUTPUT_DEPTH;
operand0.numComponents = VGPU10_OPERAND_1_COMPONENT;
operand0.indexDimension = VGPU10_OPERAND_INDEX_0D;
operand0.mask = VGPU10_OPERAND_4_COMPONENT_MASK_ALL;
emit_decl_instruction(emit, opcode0, operand0, name_token, 0, 1);
}
/**
* Emit the declaration for a system value input/output.
*/
static void
emit_system_value_declaration(struct svga_shader_emitter_v10 *emit,
enum tgsi_semantic semantic_name, unsigned index)
{
switch (semantic_name) {
case TGSI_SEMANTIC_INSTANCEID:
index = alloc_system_value_index(emit, index);
emit_input_declaration(emit, VGPU10_OPCODE_DCL_INPUT_SIV,
VGPU10_OPERAND_TYPE_INPUT,
VGPU10_OPERAND_INDEX_1D,
index, 1,
VGPU10_NAME_INSTANCE_ID,
VGPU10_OPERAND_4_COMPONENT,
VGPU10_OPERAND_4_COMPONENT_MASK_MODE,
VGPU10_OPERAND_4_COMPONENT_MASK_X,
VGPU10_INTERPOLATION_UNDEFINED);
break;
case TGSI_SEMANTIC_VERTEXID:
index = alloc_system_value_index(emit, index);
emit_input_declaration(emit, VGPU10_OPCODE_DCL_INPUT_SIV,
VGPU10_OPERAND_TYPE_INPUT,
VGPU10_OPERAND_INDEX_1D,
index, 1,
VGPU10_NAME_VERTEX_ID,
VGPU10_OPERAND_4_COMPONENT,
VGPU10_OPERAND_4_COMPONENT_MASK_MODE,
VGPU10_OPERAND_4_COMPONENT_MASK_X,
VGPU10_INTERPOLATION_UNDEFINED);
break;
default:
; /* XXX */
}
}
/**
* Translate a TGSI declaration to VGPU10.
*/
static boolean
emit_vgpu10_declaration(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_declaration *decl)
{
switch (decl->Declaration.File) {
case TGSI_FILE_INPUT:
/* do nothing - see emit_input_declarations() */
return TRUE;
case TGSI_FILE_OUTPUT:
assert(decl->Range.First == decl->Range.Last);
emit->output_usage_mask[decl->Range.First] = decl->Declaration.UsageMask;
return TRUE;
case TGSI_FILE_TEMPORARY:
/* Don't declare the temps here. Just keep track of how many
* and emit the declaration later.
*/
if (decl->Declaration.Array) {
/* Indexed temporary array. Save the start index of the array
* and the size of the array.
*/
const unsigned arrayID = MIN2(decl->Array.ArrayID, MAX_TEMP_ARRAYS);
unsigned i;
assert(arrayID < ARRAY_SIZE(emit->temp_arrays));
/* Save this array so we can emit the declaration for it later */
emit->temp_arrays[arrayID].start = decl->Range.First;
emit->temp_arrays[arrayID].size =
decl->Range.Last - decl->Range.First + 1;
emit->num_temp_arrays = MAX2(emit->num_temp_arrays, arrayID + 1);
assert(emit->num_temp_arrays <= MAX_TEMP_ARRAYS);
emit->num_temp_arrays = MIN2(emit->num_temp_arrays, MAX_TEMP_ARRAYS);
/* Fill in the temp_map entries for this array */
for (i = decl->Range.First; i <= decl->Range.Last; i++) {
emit->temp_map[i].arrayId = arrayID;
emit->temp_map[i].index = i - decl->Range.First;
}
}
/* for all temps, indexed or not, keep track of highest index */
emit->num_shader_temps = MAX2(emit->num_shader_temps,
decl->Range.Last + 1);
return TRUE;
case TGSI_FILE_CONSTANT:
/* Don't declare constants here. Just keep track and emit later. */
{
unsigned constbuf = 0, num_consts;
if (decl->Declaration.Dimension) {
constbuf = decl->Dim.Index2D;
}
/* We throw an assertion here when, in fact, the shader should never
* have linked due to constbuf index out of bounds, so we shouldn't
* have reached here.
*/
assert(constbuf < ARRAY_SIZE(emit->num_shader_consts));
num_consts = MAX2(emit->num_shader_consts[constbuf],
decl->Range.Last + 1);
if (num_consts > VGPU10_MAX_CONSTANT_BUFFER_ELEMENT_COUNT) {
debug_printf("Warning: constant buffer is declared to size [%u]"
" but [%u] is the limit.\n",
num_consts,
VGPU10_MAX_CONSTANT_BUFFER_ELEMENT_COUNT);
}
/* The linker doesn't enforce the max UBO size so we clamp here */
emit->num_shader_consts[constbuf] =
MIN2(num_consts, VGPU10_MAX_CONSTANT_BUFFER_ELEMENT_COUNT);
}
return TRUE;
case TGSI_FILE_IMMEDIATE:
assert(!"TGSI_FILE_IMMEDIATE not handled yet!");
return FALSE;
case TGSI_FILE_SYSTEM_VALUE:
emit_system_value_declaration(emit, decl->Semantic.Name,
decl->Range.First);
return TRUE;
case TGSI_FILE_SAMPLER:
/* Don't declare samplers here. Just keep track and emit later. */
emit->num_samplers = MAX2(emit->num_samplers, decl->Range.Last + 1);
return TRUE;
#if 0
case TGSI_FILE_RESOURCE:
/*opcode0.opcodeType = VGPU10_OPCODE_DCL_RESOURCE;*/
/* XXX more, VGPU10_RETURN_TYPE_FLOAT */
assert(!"TGSI_FILE_RESOURCE not handled yet");
return FALSE;
#endif
case TGSI_FILE_ADDRESS:
emit->num_address_regs = MAX2(emit->num_address_regs,
decl->Range.Last + 1);
return TRUE;
case TGSI_FILE_SAMPLER_VIEW:
{
unsigned unit = decl->Range.First;
assert(decl->Range.First == decl->Range.Last);
emit->sampler_target[unit] = decl->SamplerView.Resource;
/* Note: we can ignore YZW return types for now */
emit->sampler_return_type[unit] = decl->SamplerView.ReturnTypeX;
emit->sampler_view[unit] = TRUE;
}
return TRUE;
default:
assert(!"Unexpected type of declaration");
return FALSE;
}
}
/**
* Emit all input declarations.
*/
static boolean
emit_input_declarations(struct svga_shader_emitter_v10 *emit)
{
unsigned i;
if (emit->unit == PIPE_SHADER_FRAGMENT) {
for (i = 0; i < emit->linkage.num_inputs; i++) {
enum tgsi_semantic semantic_name = emit->info.input_semantic_name[i];
unsigned usage_mask = emit->info.input_usage_mask[i];
unsigned index = emit->linkage.input_map[i];
unsigned type, interpolationMode, name;
if (usage_mask == 0)
continue; /* register is not actually used */
if (semantic_name == TGSI_SEMANTIC_POSITION) {
/* fragment position input */
type = VGPU10_OPCODE_DCL_INPUT_PS_SGV;
interpolationMode = VGPU10_INTERPOLATION_LINEAR;
name = VGPU10_NAME_POSITION;
if (usage_mask & TGSI_WRITEMASK_W) {
/* we need to replace use of 'w' with '1/w' */
emit->fs.fragcoord_input_index = i;
}
}
else if (semantic_name == TGSI_SEMANTIC_FACE) {
/* fragment front-facing input */
type = VGPU10_OPCODE_DCL_INPUT_PS_SGV;
interpolationMode = VGPU10_INTERPOLATION_CONSTANT;
name = VGPU10_NAME_IS_FRONT_FACE;
emit->fs.face_input_index = i;
}
else if (semantic_name == TGSI_SEMANTIC_PRIMID) {
/* primitive ID */
type = VGPU10_OPCODE_DCL_INPUT_PS_SGV;
interpolationMode = VGPU10_INTERPOLATION_CONSTANT;
name = VGPU10_NAME_PRIMITIVE_ID;
}
else {
/* general fragment input */
type = VGPU10_OPCODE_DCL_INPUT_PS;
interpolationMode =
translate_interpolation(emit,
emit->info.input_interpolate[i],
emit->info.input_interpolate_loc[i]);
/* keeps track if flat interpolation mode is being used */
emit->uses_flat_interp = emit->uses_flat_interp ||
(interpolationMode == VGPU10_INTERPOLATION_CONSTANT);
name = VGPU10_NAME_UNDEFINED;
}
emit_input_declaration(emit, type,
VGPU10_OPERAND_TYPE_INPUT,
VGPU10_OPERAND_INDEX_1D, index, 1,
name,
VGPU10_OPERAND_4_COMPONENT,
VGPU10_OPERAND_4_COMPONENT_MASK_MODE,
VGPU10_OPERAND_4_COMPONENT_MASK_ALL,
interpolationMode);
}
}
else if (emit->unit == PIPE_SHADER_GEOMETRY) {
for (i = 0; i < emit->info.num_inputs; i++) {
enum tgsi_semantic semantic_name = emit->info.input_semantic_name[i];
unsigned usage_mask = emit->info.input_usage_mask[i];
unsigned index = emit->linkage.input_map[i];
unsigned opcodeType, operandType;
unsigned numComp, selMode;
unsigned name;
unsigned dim;
if (usage_mask == 0)
continue; /* register is not actually used */
opcodeType = VGPU10_OPCODE_DCL_INPUT;
operandType = VGPU10_OPERAND_TYPE_INPUT;
numComp = VGPU10_OPERAND_4_COMPONENT;
selMode = VGPU10_OPERAND_4_COMPONENT_MASK_MODE;
name = VGPU10_NAME_UNDEFINED;
/* all geometry shader inputs are two dimensional except
* gl_PrimitiveID
*/
dim = VGPU10_OPERAND_INDEX_2D;
if (semantic_name == TGSI_SEMANTIC_PRIMID) {
/* Primitive ID */
operandType = VGPU10_OPERAND_TYPE_INPUT_PRIMITIVEID;
dim = VGPU10_OPERAND_INDEX_0D;
numComp = VGPU10_OPERAND_0_COMPONENT;
selMode = 0;
/* also save the register index so we can check for
* primitive id when emit src register. We need to modify the
* operand type, index dimension when emit primitive id src reg.
*/
emit->gs.prim_id_index = i;
}
else if (semantic_name == TGSI_SEMANTIC_POSITION) {
/* vertex position input */
opcodeType = VGPU10_OPCODE_DCL_INPUT_SIV;
name = VGPU10_NAME_POSITION;
}
emit_input_declaration(emit, opcodeType, operandType,
dim, index,
emit->gs.input_size,
name,
numComp, selMode,
VGPU10_OPERAND_4_COMPONENT_MASK_ALL,
VGPU10_INTERPOLATION_UNDEFINED);
}
}
else {
assert(emit->unit == PIPE_SHADER_VERTEX);
for (i = 0; i < emit->info.file_max[TGSI_FILE_INPUT] + 1; i++) {
unsigned usage_mask = emit->info.input_usage_mask[i];
unsigned index = i;
if (usage_mask == 0)
continue; /* register is not actually used */
emit_input_declaration(emit, VGPU10_OPCODE_DCL_INPUT,
VGPU10_OPERAND_TYPE_INPUT,
VGPU10_OPERAND_INDEX_1D, index, 1,
VGPU10_NAME_UNDEFINED,
VGPU10_OPERAND_4_COMPONENT,
VGPU10_OPERAND_4_COMPONENT_MASK_MODE,
VGPU10_OPERAND_4_COMPONENT_MASK_ALL,
VGPU10_INTERPOLATION_UNDEFINED);
}
}
return TRUE;
}
/**
* Emit all output declarations.
*/
static boolean
emit_output_declarations(struct svga_shader_emitter_v10 *emit)
{
unsigned i;
for (i = 0; i < emit->info.num_outputs; i++) {
/*const unsigned usage_mask = emit->info.output_usage_mask[i];*/
const enum tgsi_semantic semantic_name =
emit->info.output_semantic_name[i];
const unsigned semantic_index = emit->info.output_semantic_index[i];
unsigned index = i;
if (emit->unit == PIPE_SHADER_FRAGMENT) {
if (semantic_name == TGSI_SEMANTIC_COLOR) {
assert(semantic_index < ARRAY_SIZE(emit->fs.color_out_index));
emit->fs.color_out_index[semantic_index] = index;
emit->fs.num_color_outputs = MAX2(emit->fs.num_color_outputs,
index + 1);
/* The semantic index is the shader's color output/buffer index */
emit_output_declaration(emit,
VGPU10_OPCODE_DCL_OUTPUT, semantic_index,
VGPU10_NAME_UNDEFINED,
VGPU10_OPERAND_4_COMPONENT_MASK_ALL);
if (semantic_index == 0) {
if (emit->key.fs.write_color0_to_n_cbufs > 1) {
/* Emit declarations for the additional color outputs
* for broadcasting.
*/
unsigned j;
for (j = 1; j < emit->key.fs.write_color0_to_n_cbufs; j++) {
/* Allocate a new output index */
unsigned idx = emit->info.num_outputs + j - 1;
emit->fs.color_out_index[j] = idx;
emit_output_declaration(emit,
VGPU10_OPCODE_DCL_OUTPUT, idx,
VGPU10_NAME_UNDEFINED,
VGPU10_OPERAND_4_COMPONENT_MASK_ALL);
emit->info.output_semantic_index[idx] = j;
}
emit->fs.num_color_outputs =
emit->key.fs.write_color0_to_n_cbufs;
}
}
else {
assert(!emit->key.fs.write_color0_to_n_cbufs);
}
}
else if (semantic_name == TGSI_SEMANTIC_POSITION) {
/* Fragment depth output */
emit_fragdepth_output_declaration(emit);
}
else {
assert(!"Bad output semantic name");
}
}
else {
/* VS or GS */
unsigned name, type;
unsigned writemask = VGPU10_OPERAND_4_COMPONENT_MASK_ALL;
switch (semantic_name) {
case TGSI_SEMANTIC_POSITION:
assert(emit->unit != PIPE_SHADER_FRAGMENT);
type = VGPU10_OPCODE_DCL_OUTPUT_SIV;
name = VGPU10_NAME_POSITION;
/* Save the index of the vertex position output register */
emit->vposition.out_index = index;
break;
case TGSI_SEMANTIC_CLIPDIST:
type = VGPU10_OPCODE_DCL_OUTPUT_SIV;
name = VGPU10_NAME_CLIP_DISTANCE;
/* save the starting index of the clip distance output register */
if (semantic_index == 0)
emit->clip_dist_out_index = index;
writemask = emit->output_usage_mask[index];
writemask = apply_clip_plane_mask(emit, writemask, semantic_index);
if (writemask == 0x0) {
continue; /* discard this do-nothing declaration */
}
break;
case TGSI_SEMANTIC_PRIMID:
assert(emit->unit == PIPE_SHADER_GEOMETRY);
type = VGPU10_OPCODE_DCL_OUTPUT_SGV;
name = VGPU10_NAME_PRIMITIVE_ID;
break;
case TGSI_SEMANTIC_LAYER:
assert(emit->unit == PIPE_SHADER_GEOMETRY);
type = VGPU10_OPCODE_DCL_OUTPUT_SGV;
name = VGPU10_NAME_RENDER_TARGET_ARRAY_INDEX;
break;
case TGSI_SEMANTIC_CLIPVERTEX:
type = VGPU10_OPCODE_DCL_OUTPUT;
name = VGPU10_NAME_UNDEFINED;
emit->clip_vertex_out_index = index;
break;
default:
/* generic output */
type = VGPU10_OPCODE_DCL_OUTPUT;
name = VGPU10_NAME_UNDEFINED;
}
emit_output_declaration(emit, type, index, name, writemask);
}
}
if (emit->vposition.so_index != INVALID_INDEX &&
emit->vposition.out_index != INVALID_INDEX) {
assert(emit->unit != PIPE_SHADER_FRAGMENT);
/* Emit the declaration for the non-adjusted vertex position
* for stream output purpose
*/
emit_output_declaration(emit, VGPU10_OPCODE_DCL_OUTPUT,
emit->vposition.so_index,
VGPU10_NAME_UNDEFINED,
VGPU10_OPERAND_4_COMPONENT_MASK_ALL);
}
if (emit->clip_dist_so_index != INVALID_INDEX &&
emit->clip_dist_out_index != INVALID_INDEX) {
assert(emit->unit != PIPE_SHADER_FRAGMENT);
/* Emit the declaration for the clip distance shadow copy which
* will be used for stream output purpose and for clip distance
* varying variable
*/
emit_output_declaration(emit, VGPU10_OPCODE_DCL_OUTPUT,
emit->clip_dist_so_index,
VGPU10_NAME_UNDEFINED,
emit->output_usage_mask[emit->clip_dist_out_index]);
if (emit->info.num_written_clipdistance > 4) {
/* for the second clip distance register, each handles 4 planes */
emit_output_declaration(emit, VGPU10_OPCODE_DCL_OUTPUT,
emit->clip_dist_so_index + 1,
VGPU10_NAME_UNDEFINED,
emit->output_usage_mask[emit->clip_dist_out_index+1]);
}
}
return TRUE;
}
/**
* Emit the declaration for the temporary registers.
*/
static boolean
emit_temporaries_declaration(struct svga_shader_emitter_v10 *emit)
{
unsigned total_temps, reg, i;
total_temps = emit->num_shader_temps;
/* If there is indirect access to non-indexable temps in the shader,
* convert those temps to indexable temps. This works around a bug
* in the GLSL->TGSI translator exposed in piglit test
* glsl-1.20/execution/fs-const-array-of-struct-of-array.shader_test.
* Internal temps added by the driver remain as non-indexable temps.
*/
if ((emit->info.indirect_files & (1 << TGSI_FILE_TEMPORARY)) &&
emit->num_temp_arrays == 0) {
unsigned arrayID;
arrayID = 1;
emit->num_temp_arrays = arrayID + 1;
emit->temp_arrays[arrayID].start = 0;
emit->temp_arrays[arrayID].size = total_temps;
/* Fill in the temp_map entries for this temp array */
for (i = 0; i < total_temps; i++) {
emit->temp_map[i].arrayId = arrayID;
emit->temp_map[i].index = i;
}
}
/* Allocate extra temps for specially-implemented instructions,
* such as LIT.
*/
total_temps += MAX_INTERNAL_TEMPS;
if (emit->unit == PIPE_SHADER_VERTEX || emit->unit == PIPE_SHADER_GEOMETRY) {
if (emit->vposition.need_prescale || emit->key.vs.undo_viewport ||
emit->key.clip_plane_enable ||
emit->vposition.so_index != INVALID_INDEX) {
emit->vposition.tmp_index = total_temps;
total_temps += 1;
}
if (emit->unit == PIPE_SHADER_VERTEX) {
unsigned attrib_mask = (emit->key.vs.adjust_attrib_w_1 |
emit->key.vs.adjust_attrib_itof |
emit->key.vs.adjust_attrib_utof |
emit->key.vs.attrib_is_bgra |
emit->key.vs.attrib_puint_to_snorm |
emit->key.vs.attrib_puint_to_uscaled |
emit->key.vs.attrib_puint_to_sscaled);
while (attrib_mask) {
unsigned index = u_bit_scan(&attrib_mask);
emit->vs.adjusted_input[index] = total_temps++;
}
}
if (emit->clip_mode == CLIP_DISTANCE) {
/* We need to write the clip distance to a temporary register
* first. Then it will be copied to the shadow copy for
* the clip distance varying variable and stream output purpose.
* It will also be copied to the actual CLIPDIST register
* according to the enabled clip planes
*/
emit->clip_dist_tmp_index = total_temps++;
if (emit->info.num_written_clipdistance > 4)
total_temps++; /* second clip register */
}
else if (emit->clip_mode == CLIP_VERTEX) {
/* We need to convert the TGSI CLIPVERTEX output to one or more
* clip distances. Allocate a temp reg for the clipvertex here.
*/
assert(emit->info.writes_clipvertex > 0);
emit->clip_vertex_tmp_index = total_temps;
total_temps++;
}
}
else if (emit->unit == PIPE_SHADER_FRAGMENT) {
if (emit->key.fs.alpha_func != SVGA3D_CMP_ALWAYS ||
emit->key.fs.write_color0_to_n_cbufs > 1) {
/* Allocate a temp to hold the output color */
emit->fs.color_tmp_index = total_temps;
total_temps += 1;
}
if (emit->fs.face_input_index != INVALID_INDEX) {
/* Allocate a temp for the +/-1 face register */
emit->fs.face_tmp_index = total_temps;
total_temps += 1;
}
if (emit->fs.fragcoord_input_index != INVALID_INDEX) {
/* Allocate a temp for modified fragment position register */
emit->fs.fragcoord_tmp_index = total_temps;
total_temps += 1;
}
}
for (i = 0; i < emit->num_address_regs; i++) {
emit->address_reg_index[i] = total_temps++;
}
/* Initialize the temp_map array which maps TGSI temp indexes to VGPU10
* temp indexes. Basically, we compact all the non-array temp register
* indexes into a consecutive series.
*
* Before, we may have some TGSI declarations like:
* DCL TEMP[0..1], LOCAL
* DCL TEMP[2..4], ARRAY(1), LOCAL
* DCL TEMP[5..7], ARRAY(2), LOCAL
* plus, some extra temps, like TEMP[8], TEMP[9] for misc things
*
* After, we'll have a map like this:
* temp_map[0] = { array 0, index 0 }
* temp_map[1] = { array 0, index 1 }
* temp_map[2] = { array 1, index 0 }
* temp_map[3] = { array 1, index 1 }
* temp_map[4] = { array 1, index 2 }
* temp_map[5] = { array 2, index 0 }
* temp_map[6] = { array 2, index 1 }
* temp_map[7] = { array 2, index 2 }
* temp_map[8] = { array 0, index 2 }
* temp_map[9] = { array 0, index 3 }
*
* We'll declare two arrays of 3 elements, plus a set of four non-indexed
* temps numbered 0..3
*
* Any time we emit a temporary register index, we'll have to use the
* temp_map[] table to convert the TGSI index to the VGPU10 index.
*
* Finally, we recompute the total_temps value here.
*/
reg = 0;
for (i = 0; i < total_temps; i++) {
if (emit->temp_map[i].arrayId == 0) {
emit->temp_map[i].index = reg++;
}
}
if (0) {
debug_printf("total_temps %u\n", total_temps);
for (i = 0; i < total_temps; i++) {
debug_printf("temp %u -> array %u index %u\n",
i, emit->temp_map[i].arrayId, emit->temp_map[i].index);
}
}
total_temps = reg;
/* Emit declaration of ordinary temp registers */
if (total_temps > 0) {
VGPU10OpcodeToken0 opcode0;
opcode0.value = 0;
opcode0.opcodeType = VGPU10_OPCODE_DCL_TEMPS;
begin_emit_instruction(emit);
emit_dword(emit, opcode0.value);
emit_dword(emit, total_temps);
end_emit_instruction(emit);
}
/* Emit declarations for indexable temp arrays. Skip 0th entry since
* it's unused.
*/
for (i = 1; i < emit->num_temp_arrays; i++) {
unsigned num_temps = emit->temp_arrays[i].size;
if (num_temps > 0) {
VGPU10OpcodeToken0 opcode0;
opcode0.value = 0;
opcode0.opcodeType = VGPU10_OPCODE_DCL_INDEXABLE_TEMP;
begin_emit_instruction(emit);
emit_dword(emit, opcode0.value);
emit_dword(emit, i); /* which array */
emit_dword(emit, num_temps);
emit_dword(emit, 4); /* num components */
end_emit_instruction(emit);
total_temps += num_temps;
}
}
/* Check that the grand total of all regular and indexed temps is
* under the limit.
*/
check_register_index(emit, VGPU10_OPCODE_DCL_TEMPS, total_temps - 1);
return TRUE;
}
static boolean
emit_constant_declaration(struct svga_shader_emitter_v10 *emit)
{
VGPU10OpcodeToken0 opcode0;
VGPU10OperandToken0 operand0;
unsigned total_consts, i;
opcode0.value = 0;
opcode0.opcodeType = VGPU10_OPCODE_DCL_CONSTANT_BUFFER;
opcode0.accessPattern = VGPU10_CB_IMMEDIATE_INDEXED;
/* XXX or, access pattern = VGPU10_CB_DYNAMIC_INDEXED */
operand0.value = 0;
operand0.numComponents = VGPU10_OPERAND_4_COMPONENT;
operand0.indexDimension = VGPU10_OPERAND_INDEX_2D;
operand0.index0Representation = VGPU10_OPERAND_INDEX_IMMEDIATE32;
operand0.index1Representation = VGPU10_OPERAND_INDEX_IMMEDIATE32;
operand0.operandType = VGPU10_OPERAND_TYPE_CONSTANT_BUFFER;
operand0.selectionMode = VGPU10_OPERAND_4_COMPONENT_SWIZZLE_MODE;
operand0.swizzleX = 0;
operand0.swizzleY = 1;
operand0.swizzleZ = 2;
operand0.swizzleW = 3;
/**
* Emit declaration for constant buffer [0]. We also allocate
* room for the extra constants here.
*/
total_consts = emit->num_shader_consts[0];
/* Now, allocate constant slots for the "extra" constants.
* Note: it's critical that these extra constant locations
* exactly match what's emitted by the "extra" constants code
* in svga_state_constants.c
*/
/* Vertex position scale/translation */
if (emit->vposition.need_prescale) {
emit->vposition.prescale_scale_index = total_consts++;
emit->vposition.prescale_trans_index = total_consts++;
}
if (emit->unit == PIPE_SHADER_VERTEX) {
if (emit->key.vs.undo_viewport) {
emit->vs.viewport_index = total_consts++;
}
}
/* user-defined clip planes */
if (emit->key.clip_plane_enable) {
unsigned n = util_bitcount(emit->key.clip_plane_enable);
assert(emit->unit == PIPE_SHADER_VERTEX ||
emit->unit == PIPE_SHADER_GEOMETRY);
for (i = 0; i < n; i++) {
emit->clip_plane_const[i] = total_consts++;
}
}
for (i = 0; i < emit->num_samplers; i++) {
if (emit->sampler_view[i]) {
/* Texcoord scale factors for RECT textures */
if (emit->key.tex[i].unnormalized) {
emit->texcoord_scale_index[i] = total_consts++;
}
/* Texture buffer sizes */
if (emit->sampler_target[i] == TGSI_TEXTURE_BUFFER) {
emit->texture_buffer_size_index[i] = total_consts++;
}
}
}
if (total_consts > 0) {
begin_emit_instruction(emit);
emit_dword(emit, opcode0.value);
emit_dword(emit, operand0.value);
emit_dword(emit, 0); /* which const buffer slot */
emit_dword(emit, total_consts);
end_emit_instruction(emit);
}
/* Declare remaining constant buffers (UBOs) */
for (i = 1; i < ARRAY_SIZE(emit->num_shader_consts); i++) {
if (emit->num_shader_consts[i] > 0) {
begin_emit_instruction(emit);
emit_dword(emit, opcode0.value);
emit_dword(emit, operand0.value);
emit_dword(emit, i); /* which const buffer slot */
emit_dword(emit, emit->num_shader_consts[i]);
end_emit_instruction(emit);
}
}
return TRUE;
}
/**
* Emit declarations for samplers.
*/
static boolean
emit_sampler_declarations(struct svga_shader_emitter_v10 *emit)
{
unsigned i;
for (i = 0; i < emit->num_samplers; i++) {
VGPU10OpcodeToken0 opcode0;
VGPU10OperandToken0 operand0;
opcode0.value = 0;
opcode0.opcodeType = VGPU10_OPCODE_DCL_SAMPLER;
opcode0.samplerMode = VGPU10_SAMPLER_MODE_DEFAULT;
operand0.value = 0;
operand0.numComponents = VGPU10_OPERAND_0_COMPONENT;
operand0.operandType = VGPU10_OPERAND_TYPE_SAMPLER;
operand0.indexDimension = VGPU10_OPERAND_INDEX_1D;
operand0.index0Representation = VGPU10_OPERAND_INDEX_IMMEDIATE32;
begin_emit_instruction(emit);
emit_dword(emit, opcode0.value);
emit_dword(emit, operand0.value);
emit_dword(emit, i);
end_emit_instruction(emit);
}
return TRUE;
}
/**
* Translate TGSI_TEXTURE_x to VGAPU10_RESOURCE_DIMENSION_x.
*/
static unsigned
tgsi_texture_to_resource_dimension(enum tgsi_texture_type target,
boolean is_array)
{
switch (target) {
case TGSI_TEXTURE_BUFFER:
return VGPU10_RESOURCE_DIMENSION_BUFFER;
case TGSI_TEXTURE_1D:
return VGPU10_RESOURCE_DIMENSION_TEXTURE1D;
case TGSI_TEXTURE_2D:
case TGSI_TEXTURE_RECT:
return VGPU10_RESOURCE_DIMENSION_TEXTURE2D;
case TGSI_TEXTURE_3D:
return VGPU10_RESOURCE_DIMENSION_TEXTURE3D;
case TGSI_TEXTURE_CUBE:
return VGPU10_RESOURCE_DIMENSION_TEXTURECUBE;
case TGSI_TEXTURE_SHADOW1D:
return VGPU10_RESOURCE_DIMENSION_TEXTURE1D;
case TGSI_TEXTURE_SHADOW2D:
case TGSI_TEXTURE_SHADOWRECT:
return VGPU10_RESOURCE_DIMENSION_TEXTURE2D;
case TGSI_TEXTURE_1D_ARRAY:
case TGSI_TEXTURE_SHADOW1D_ARRAY:
return is_array ? VGPU10_RESOURCE_DIMENSION_TEXTURE1DARRAY
: VGPU10_RESOURCE_DIMENSION_TEXTURE1D;
case TGSI_TEXTURE_2D_ARRAY:
case TGSI_TEXTURE_SHADOW2D_ARRAY:
return is_array ? VGPU10_RESOURCE_DIMENSION_TEXTURE2DARRAY
: VGPU10_RESOURCE_DIMENSION_TEXTURE2D;
case TGSI_TEXTURE_SHADOWCUBE:
return VGPU10_RESOURCE_DIMENSION_TEXTURECUBE;
case TGSI_TEXTURE_2D_MSAA:
return VGPU10_RESOURCE_DIMENSION_TEXTURE2DMS;
case TGSI_TEXTURE_2D_ARRAY_MSAA:
return is_array ? VGPU10_RESOURCE_DIMENSION_TEXTURE2DMSARRAY
: VGPU10_RESOURCE_DIMENSION_TEXTURE2DMS;
case TGSI_TEXTURE_CUBE_ARRAY:
return VGPU10_RESOURCE_DIMENSION_TEXTURECUBEARRAY;
default:
assert(!"Unexpected resource type");
return VGPU10_RESOURCE_DIMENSION_TEXTURE2D;
}
}
/**
* Given a tgsi_return_type, return true iff it is an integer type.
*/
static boolean
is_integer_type(enum tgsi_return_type type)
{
switch (type) {
case TGSI_RETURN_TYPE_SINT:
case TGSI_RETURN_TYPE_UINT:
return TRUE;
case TGSI_RETURN_TYPE_FLOAT:
case TGSI_RETURN_TYPE_UNORM:
case TGSI_RETURN_TYPE_SNORM:
return FALSE;
case TGSI_RETURN_TYPE_COUNT:
default:
assert(!"is_integer_type: Unknown tgsi_return_type");
return FALSE;
}
}
/**
* Emit declarations for resources.
* XXX When we're sure that all TGSI shaders will be generated with
* sampler view declarations (Ex: DCL SVIEW[n], 2D, UINT) we may
* rework this code.
*/
static boolean
emit_resource_declarations(struct svga_shader_emitter_v10 *emit)
{
unsigned i;
/* Emit resource decl for each sampler */
for (i = 0; i < emit->num_samplers; i++) {
VGPU10OpcodeToken0 opcode0;
VGPU10OperandToken0 operand0;
VGPU10ResourceReturnTypeToken return_type;
VGPU10_RESOURCE_RETURN_TYPE rt;
opcode0.value = 0;
opcode0.opcodeType = VGPU10_OPCODE_DCL_RESOURCE;
opcode0.resourceDimension =
tgsi_texture_to_resource_dimension(emit->sampler_target[i],
emit->key.tex[i].is_array);
operand0.value = 0;
operand0.numComponents = VGPU10_OPERAND_0_COMPONENT;
operand0.operandType = VGPU10_OPERAND_TYPE_RESOURCE;
operand0.indexDimension = VGPU10_OPERAND_INDEX_1D;
operand0.index0Representation = VGPU10_OPERAND_INDEX_IMMEDIATE32;
#if 1
/* convert TGSI_RETURN_TYPE_x to VGPU10_RETURN_TYPE_x */
STATIC_ASSERT(VGPU10_RETURN_TYPE_UNORM == TGSI_RETURN_TYPE_UNORM + 1);
STATIC_ASSERT(VGPU10_RETURN_TYPE_SNORM == TGSI_RETURN_TYPE_SNORM + 1);
STATIC_ASSERT(VGPU10_RETURN_TYPE_SINT == TGSI_RETURN_TYPE_SINT + 1);
STATIC_ASSERT(VGPU10_RETURN_TYPE_UINT == TGSI_RETURN_TYPE_UINT + 1);
STATIC_ASSERT(VGPU10_RETURN_TYPE_FLOAT == TGSI_RETURN_TYPE_FLOAT + 1);
assert(emit->sampler_return_type[i] <= TGSI_RETURN_TYPE_FLOAT);
rt = emit->sampler_return_type[i] + 1;
#else
switch (emit->sampler_return_type[i]) {
case TGSI_RETURN_TYPE_UNORM: rt = VGPU10_RETURN_TYPE_UNORM; break;
case TGSI_RETURN_TYPE_SNORM: rt = VGPU10_RETURN_TYPE_SNORM; break;
case TGSI_RETURN_TYPE_SINT: rt = VGPU10_RETURN_TYPE_SINT; break;
case TGSI_RETURN_TYPE_UINT: rt = VGPU10_RETURN_TYPE_UINT; break;
case TGSI_RETURN_TYPE_FLOAT: rt = VGPU10_RETURN_TYPE_FLOAT; break;
case TGSI_RETURN_TYPE_COUNT:
default:
rt = VGPU10_RETURN_TYPE_FLOAT;
assert(!"emit_resource_declarations: Unknown tgsi_return_type");
}
#endif
return_type.value = 0;
return_type.component0 = rt;
return_type.component1 = rt;
return_type.component2 = rt;
return_type.component3 = rt;
begin_emit_instruction(emit);
emit_dword(emit, opcode0.value);
emit_dword(emit, operand0.value);
emit_dword(emit, i);
emit_dword(emit, return_type.value);
end_emit_instruction(emit);
}
return TRUE;
}
static void
emit_instruction_op1(struct svga_shader_emitter_v10 *emit,
unsigned opcode,
const struct tgsi_full_dst_register *dst,
const struct tgsi_full_src_register *src,
boolean saturate)
{
begin_emit_instruction(emit);
emit_opcode(emit, opcode, saturate);
emit_dst_register(emit, dst);
emit_src_register(emit, src);
end_emit_instruction(emit);
}
static void
emit_instruction_op2(struct svga_shader_emitter_v10 *emit,
unsigned opcode,
const struct tgsi_full_dst_register *dst,
const struct tgsi_full_src_register *src1,
const struct tgsi_full_src_register *src2,
boolean saturate)
{
begin_emit_instruction(emit);
emit_opcode(emit, opcode, saturate);
emit_dst_register(emit, dst);
emit_src_register(emit, src1);
emit_src_register(emit, src2);
end_emit_instruction(emit);
}
static void
emit_instruction_op3(struct svga_shader_emitter_v10 *emit,
unsigned opcode,
const struct tgsi_full_dst_register *dst,
const struct tgsi_full_src_register *src1,
const struct tgsi_full_src_register *src2,
const struct tgsi_full_src_register *src3,
boolean saturate)
{
begin_emit_instruction(emit);
emit_opcode(emit, opcode, saturate);
emit_dst_register(emit, dst);
emit_src_register(emit, src1);
emit_src_register(emit, src2);
emit_src_register(emit, src3);
end_emit_instruction(emit);
}
/**
* Emit the actual clip distance instructions to be used for clipping
* by copying the clip distance from the temporary registers to the
* CLIPDIST registers written with the enabled planes mask.
* Also copy the clip distance from the temporary to the clip distance
* shadow copy register which will be referenced by the input shader
*/
static void
emit_clip_distance_instructions(struct svga_shader_emitter_v10 *emit)
{
struct tgsi_full_src_register tmp_clip_dist_src;
struct tgsi_full_dst_register clip_dist_dst;
unsigned i;
unsigned clip_plane_enable = emit->key.clip_plane_enable;
unsigned clip_dist_tmp_index = emit->clip_dist_tmp_index;
int num_written_clipdist = emit->info.num_written_clipdistance;
assert(emit->clip_dist_out_index != INVALID_INDEX);
assert(emit->clip_dist_tmp_index != INVALID_INDEX);
/**
* Temporary reset the temporary clip dist register index so
* that the copy to the real clip dist register will not
* attempt to copy to the temporary register again
*/
emit->clip_dist_tmp_index = INVALID_INDEX;
for (i = 0; i < 2 && num_written_clipdist > 0; i++, num_written_clipdist-=4) {
tmp_clip_dist_src = make_src_temp_reg(clip_dist_tmp_index + i);
/**
* copy to the shadow copy for use by varying variable and
* stream output. All clip distances
* will be written regardless of the enabled clipping planes.
*/
clip_dist_dst = make_dst_reg(TGSI_FILE_OUTPUT,
emit->clip_dist_so_index + i);
/* MOV clip_dist_so, tmp_clip_dist */
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &clip_dist_dst,
&tmp_clip_dist_src, FALSE);
/**
* copy those clip distances to enabled clipping planes
* to CLIPDIST registers for clipping
*/
if (clip_plane_enable & 0xf) {
clip_dist_dst = make_dst_reg(TGSI_FILE_OUTPUT,
emit->clip_dist_out_index + i);
clip_dist_dst = writemask_dst(&clip_dist_dst, clip_plane_enable & 0xf);
/* MOV CLIPDIST, tmp_clip_dist */
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &clip_dist_dst,
&tmp_clip_dist_src, FALSE);
}
/* four clip planes per clip register */
clip_plane_enable >>= 4;
}
/**
* set the temporary clip dist register index back to the
* temporary index for the next vertex
*/
emit->clip_dist_tmp_index = clip_dist_tmp_index;
}
/* Declare clip distance output registers for user-defined clip planes
* or the TGSI_CLIPVERTEX output.
*/
static void
emit_clip_distance_declarations(struct svga_shader_emitter_v10 *emit)
{
unsigned num_clip_planes = util_bitcount(emit->key.clip_plane_enable);
unsigned index = emit->num_outputs;
unsigned plane_mask;
assert(emit->unit == PIPE_SHADER_VERTEX ||
emit->unit == PIPE_SHADER_GEOMETRY);
assert(num_clip_planes <= 8);
if (emit->clip_mode != CLIP_LEGACY &&
emit->clip_mode != CLIP_VERTEX) {
return;
}
if (num_clip_planes == 0)
return;
/* Declare one or two clip output registers. The number of components
* in the mask reflects the number of clip planes. For example, if 5
* clip planes are needed, we'll declare outputs similar to:
* dcl_output_siv o2.xyzw, clip_distance
* dcl_output_siv o3.x, clip_distance
*/
emit->clip_dist_out_index = index; /* save the starting clip dist reg index */
plane_mask = (1 << num_clip_planes) - 1;
if (plane_mask & 0xf) {
unsigned cmask = plane_mask & VGPU10_OPERAND_4_COMPONENT_MASK_ALL;
emit_output_declaration(emit, VGPU10_OPCODE_DCL_OUTPUT_SIV, index,
VGPU10_NAME_CLIP_DISTANCE, cmask);
emit->num_outputs++;
}
if (plane_mask & 0xf0) {
unsigned cmask = (plane_mask >> 4) & VGPU10_OPERAND_4_COMPONENT_MASK_ALL;
emit_output_declaration(emit, VGPU10_OPCODE_DCL_OUTPUT_SIV, index + 1,
VGPU10_NAME_CLIP_DISTANCE, cmask);
emit->num_outputs++;
}
}
/**
* Emit the instructions for writing to the clip distance registers
* to handle legacy/automatic clip planes.
* For each clip plane, the distance is the dot product of the vertex
* position (found in TEMP[vpos_tmp_index]) and the clip plane coefficients.
* This is not used when the shader has an explicit CLIPVERTEX or CLIPDISTANCE
* output registers already declared.
*/
static void
emit_clip_distance_from_vpos(struct svga_shader_emitter_v10 *emit,
unsigned vpos_tmp_index)
{
unsigned i, num_clip_planes = util_bitcount(emit->key.clip_plane_enable);
assert(emit->clip_mode == CLIP_LEGACY);
assert(num_clip_planes <= 8);
assert(emit->unit == PIPE_SHADER_VERTEX ||
emit->unit == PIPE_SHADER_GEOMETRY);
for (i = 0; i < num_clip_planes; i++) {
struct tgsi_full_dst_register dst;
struct tgsi_full_src_register plane_src, vpos_src;
unsigned reg_index = emit->clip_dist_out_index + i / 4;
unsigned comp = i % 4;
unsigned writemask = VGPU10_OPERAND_4_COMPONENT_MASK_X << comp;
/* create dst, src regs */
dst = make_dst_reg(TGSI_FILE_OUTPUT, reg_index);
dst = writemask_dst(&dst, writemask);
plane_src = make_src_const_reg(emit->clip_plane_const[i]);
vpos_src = make_src_temp_reg(vpos_tmp_index);
/* DP4 clip_dist, plane, vpos */
emit_instruction_op2(emit, VGPU10_OPCODE_DP4, &dst,
&plane_src, &vpos_src, FALSE);
}
}
/**
* Emit the instructions for computing the clip distance results from
* the clip vertex temporary.
* For each clip plane, the distance is the dot product of the clip vertex
* position (found in a temp reg) and the clip plane coefficients.
*/
static void
emit_clip_vertex_instructions(struct svga_shader_emitter_v10 *emit)
{
const unsigned num_clip = util_bitcount(emit->key.clip_plane_enable);
unsigned i;
struct tgsi_full_dst_register dst;
struct tgsi_full_src_register clipvert_src;
const unsigned clip_vertex_tmp = emit->clip_vertex_tmp_index;
assert(emit->unit == PIPE_SHADER_VERTEX ||
emit->unit == PIPE_SHADER_GEOMETRY);
assert(emit->clip_mode == CLIP_VERTEX);
clipvert_src = make_src_temp_reg(clip_vertex_tmp);
for (i = 0; i < num_clip; i++) {
struct tgsi_full_src_register plane_src;
unsigned reg_index = emit->clip_dist_out_index + i / 4;
unsigned comp = i % 4;
unsigned writemask = VGPU10_OPERAND_4_COMPONENT_MASK_X << comp;
/* create dst, src regs */
dst = make_dst_reg(TGSI_FILE_OUTPUT, reg_index);
dst = writemask_dst(&dst, writemask);
plane_src = make_src_const_reg(emit->clip_plane_const[i]);
/* DP4 clip_dist, plane, vpos */
emit_instruction_op2(emit, VGPU10_OPCODE_DP4, &dst,
&plane_src, &clipvert_src, FALSE);
}
/* copy temporary clip vertex register to the clip vertex register */
assert(emit->clip_vertex_out_index != INVALID_INDEX);
/**
* temporary reset the temporary clip vertex register index so
* that copy to the clip vertex register will not attempt
* to copy to the temporary register again
*/
emit->clip_vertex_tmp_index = INVALID_INDEX;
/* MOV clip_vertex, clip_vertex_tmp */
dst = make_dst_reg(TGSI_FILE_OUTPUT, emit->clip_vertex_out_index);
emit_instruction_op1(emit, VGPU10_OPCODE_MOV,
&dst, &clipvert_src, FALSE);
/**
* set the temporary clip vertex register index back to the
* temporary index for the next vertex
*/
emit->clip_vertex_tmp_index = clip_vertex_tmp;
}
/**
* Emit code to convert RGBA to BGRA
*/
static void
emit_swap_r_b(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_dst_register *dst,
const struct tgsi_full_src_register *src)
{
struct tgsi_full_src_register bgra_src =
swizzle_src(src, TGSI_SWIZZLE_Z, TGSI_SWIZZLE_Y, TGSI_SWIZZLE_X, TGSI_SWIZZLE_W);
begin_emit_instruction(emit);
emit_opcode(emit, VGPU10_OPCODE_MOV, FALSE);
emit_dst_register(emit, dst);
emit_src_register(emit, &bgra_src);
end_emit_instruction(emit);
}
/** Convert from 10_10_10_2 normalized to 10_10_10_2_snorm */
static void
emit_puint_to_snorm(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_dst_register *dst,
const struct tgsi_full_src_register *src)
{
struct tgsi_full_src_register half = make_immediate_reg_float(emit, 0.5f);
struct tgsi_full_src_register two =
make_immediate_reg_float4(emit, 2.0f, 2.0f, 2.0f, 3.0f);
struct tgsi_full_src_register neg_two =
make_immediate_reg_float4(emit, -2.0f, -2.0f, -2.0f, -1.66666f);
unsigned val_tmp = get_temp_index(emit);
struct tgsi_full_dst_register val_dst = make_dst_temp_reg(val_tmp);
struct tgsi_full_src_register val_src = make_src_temp_reg(val_tmp);
unsigned bias_tmp = get_temp_index(emit);
struct tgsi_full_dst_register bias_dst = make_dst_temp_reg(bias_tmp);
struct tgsi_full_src_register bias_src = make_src_temp_reg(bias_tmp);
/* val = src * 2.0 */
emit_instruction_op2(emit, VGPU10_OPCODE_MUL, &val_dst,
src, &two, FALSE);
/* bias = src > 0.5 */
emit_instruction_op2(emit, VGPU10_OPCODE_GE, &bias_dst,
src, &half, FALSE);
/* bias = bias & -2.0 */
emit_instruction_op2(emit, VGPU10_OPCODE_AND, &bias_dst,
&bias_src, &neg_two, FALSE);
/* dst = val + bias */
emit_instruction_op2(emit, VGPU10_OPCODE_ADD, dst,
&val_src, &bias_src, FALSE);
free_temp_indexes(emit);
}
/** Convert from 10_10_10_2_unorm to 10_10_10_2_uscaled */
static void
emit_puint_to_uscaled(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_dst_register *dst,
const struct tgsi_full_src_register *src)
{
struct tgsi_full_src_register scale =
make_immediate_reg_float4(emit, 1023.0f, 1023.0f, 1023.0f, 3.0f);
/* dst = src * scale */
emit_instruction_op2(emit, VGPU10_OPCODE_MUL, dst, src, &scale, FALSE);
}
/** Convert from R32_UINT to 10_10_10_2_sscaled */
static void
emit_puint_to_sscaled(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_dst_register *dst,
const struct tgsi_full_src_register *src)
{
struct tgsi_full_src_register lshift =
make_immediate_reg_int4(emit, 22, 12, 2, 0);
struct tgsi_full_src_register rshift =
make_immediate_reg_int4(emit, 22, 22, 22, 30);
struct tgsi_full_src_register src_xxxx = scalar_src(src, TGSI_SWIZZLE_X);
unsigned tmp = get_temp_index(emit);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
/*
* r = (pixel << 22) >> 22; # signed int in [511, -512]
* g = (pixel << 12) >> 22; # signed int in [511, -512]
* b = (pixel << 2) >> 22; # signed int in [511, -512]
* a = (pixel << 0) >> 30; # signed int in [1, -2]
* dst = i_to_f(r,g,b,a); # convert to float
*/
emit_instruction_op2(emit, VGPU10_OPCODE_ISHL, &tmp_dst,
&src_xxxx, &lshift, FALSE);
emit_instruction_op2(emit, VGPU10_OPCODE_ISHR, &tmp_dst,
&tmp_src, &rshift, FALSE);
emit_instruction_op1(emit, VGPU10_OPCODE_ITOF, dst, &tmp_src, FALSE);
free_temp_indexes(emit);
}
/**
* Emit code for TGSI_OPCODE_ARL or TGSI_OPCODE_UARL instruction.
*/
static boolean
emit_arl_uarl(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
unsigned index = inst->Dst[0].Register.Index;
struct tgsi_full_dst_register dst;
unsigned opcode;
assert(index < MAX_VGPU10_ADDR_REGS);
dst = make_dst_temp_reg(emit->address_reg_index[index]);
/* ARL dst, s0
* Translates into:
* FTOI address_tmp, s0
*
* UARL dst, s0
* Translates into:
* MOV address_tmp, s0
*/
if (inst->Instruction.Opcode == TGSI_OPCODE_ARL)
opcode = VGPU10_OPCODE_FTOI;
else
opcode = VGPU10_OPCODE_MOV;
emit_instruction_op1(emit, opcode, &dst, &inst->Src[0], FALSE);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_CAL instruction.
*/
static boolean
emit_cal(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
unsigned label = inst->Label.Label;
VGPU10OperandToken0 operand;
operand.value = 0;
operand.operandType = VGPU10_OPERAND_TYPE_LABEL;
begin_emit_instruction(emit);
emit_dword(emit, operand.value);
emit_dword(emit, label);
end_emit_instruction(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_IABS instruction.
*/
static boolean
emit_iabs(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
/* dst.x = (src0.x < 0) ? -src0.x : src0.x
* dst.y = (src0.y < 0) ? -src0.y : src0.y
* dst.z = (src0.z < 0) ? -src0.z : src0.z
* dst.w = (src0.w < 0) ? -src0.w : src0.w
*
* Translates into
* IMAX dst, src, neg(src)
*/
struct tgsi_full_src_register neg_src = negate_src(&inst->Src[0]);
emit_instruction_op2(emit, VGPU10_OPCODE_IMAX, &inst->Dst[0],
&inst->Src[0], &neg_src, FALSE);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_CMP instruction.
*/
static boolean
emit_cmp(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
/* dst.x = (src0.x < 0) ? src1.x : src2.x
* dst.y = (src0.y < 0) ? src1.y : src2.y
* dst.z = (src0.z < 0) ? src1.z : src2.z
* dst.w = (src0.w < 0) ? src1.w : src2.w
*
* Translates into
* LT tmp, src0, 0.0
* MOVC dst, tmp, src1, src2
*/
struct tgsi_full_src_register zero = make_immediate_reg_float(emit, 0.0f);
unsigned tmp = get_temp_index(emit);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
emit_instruction_op2(emit, VGPU10_OPCODE_LT, &tmp_dst,
&inst->Src[0], &zero, FALSE);
emit_instruction_op3(emit, VGPU10_OPCODE_MOVC, &inst->Dst[0],
&tmp_src, &inst->Src[1], &inst->Src[2],
inst->Instruction.Saturate);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_DST instruction.
*/
static boolean
emit_dst(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
/*
* dst.x = 1
* dst.y = src0.y * src1.y
* dst.z = src0.z
* dst.w = src1.w
*/
struct tgsi_full_src_register s0_yyyy =
scalar_src(&inst->Src[0], TGSI_SWIZZLE_Y);
struct tgsi_full_src_register s0_zzzz =
scalar_src(&inst->Src[0], TGSI_SWIZZLE_Z);
struct tgsi_full_src_register s1_yyyy =
scalar_src(&inst->Src[1], TGSI_SWIZZLE_Y);
struct tgsi_full_src_register s1_wwww =
scalar_src(&inst->Src[1], TGSI_SWIZZLE_W);
/*
* If dst and either src0 and src1 are the same we need
* to create a temporary for it and insert a extra move.
*/
unsigned tmp_move = get_temp_index(emit);
struct tgsi_full_src_register move_src = make_src_temp_reg(tmp_move);
struct tgsi_full_dst_register move_dst = make_dst_temp_reg(tmp_move);
/* MOV dst.x, 1.0 */
if (inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_X) {
struct tgsi_full_dst_register dst_x =
writemask_dst(&move_dst, TGSI_WRITEMASK_X);
struct tgsi_full_src_register one = make_immediate_reg_float(emit, 1.0f);
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &dst_x, &one, FALSE);
}
/* MUL dst.y, s0.y, s1.y */
if (inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_Y) {
struct tgsi_full_dst_register dst_y =
writemask_dst(&move_dst, TGSI_WRITEMASK_Y);
emit_instruction_op2(emit, VGPU10_OPCODE_MUL, &dst_y, &s0_yyyy,
&s1_yyyy, inst->Instruction.Saturate);
}
/* MOV dst.z, s0.z */
if (inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_Z) {
struct tgsi_full_dst_register dst_z =
writemask_dst(&move_dst, TGSI_WRITEMASK_Z);
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &dst_z, &s0_zzzz,
inst->Instruction.Saturate);
}
/* MOV dst.w, s1.w */
if (inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_W) {
struct tgsi_full_dst_register dst_w =
writemask_dst(&move_dst, TGSI_WRITEMASK_W);
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &dst_w, &s1_wwww,
inst->Instruction.Saturate);
}
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &inst->Dst[0], &move_src,
FALSE);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_ENDPRIM (GS only)
*/
static boolean
emit_endprim(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
assert(emit->unit == PIPE_SHADER_GEOMETRY);
/* We can't use emit_simple() because the TGSI instruction has one
* operand (vertex stream number) which we must ignore for VGPU10.
*/
begin_emit_instruction(emit);
emit_opcode(emit, VGPU10_OPCODE_CUT, FALSE);
end_emit_instruction(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_EX2 (2^x) instruction.
*/
static boolean
emit_ex2(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
/* Note that TGSI_OPCODE_EX2 computes only one value from src.x
* while VGPU10 computes four values.
*
* dst = EX2(src):
* dst.xyzw = 2.0 ^ src.x
*/
struct tgsi_full_src_register src_xxxx =
swizzle_src(&inst->Src[0], TGSI_SWIZZLE_X, TGSI_SWIZZLE_X,
TGSI_SWIZZLE_X, TGSI_SWIZZLE_X);
/* EXP tmp, s0.xxxx */
emit_instruction_op1(emit, VGPU10_OPCODE_EXP, &inst->Dst[0], &src_xxxx,
inst->Instruction.Saturate);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_EXP instruction.
*/
static boolean
emit_exp(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
/*
* dst.x = 2 ^ floor(s0.x)
* dst.y = s0.x - floor(s0.x)
* dst.z = 2 ^ s0.x
* dst.w = 1.0
*/
struct tgsi_full_src_register src_xxxx =
scalar_src(&inst->Src[0], TGSI_SWIZZLE_X);
unsigned tmp = get_temp_index(emit);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
/*
* If dst and src are the same we need to create
* a temporary for it and insert a extra move.
*/
unsigned tmp_move = get_temp_index(emit);
struct tgsi_full_src_register move_src = make_src_temp_reg(tmp_move);
struct tgsi_full_dst_register move_dst = make_dst_temp_reg(tmp_move);
/* only use X component of temp reg */
tmp_dst = writemask_dst(&tmp_dst, TGSI_WRITEMASK_X);
tmp_src = scalar_src(&tmp_src, TGSI_SWIZZLE_X);
/* ROUND_NI tmp.x, s0.x */
emit_instruction_op1(emit, VGPU10_OPCODE_ROUND_NI, &tmp_dst,
&src_xxxx, FALSE); /* round to -infinity */
/* EXP dst.x, tmp.x */
if (inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_X) {
struct tgsi_full_dst_register dst_x =
writemask_dst(&move_dst, TGSI_WRITEMASK_X);
emit_instruction_op1(emit, VGPU10_OPCODE_EXP, &dst_x, &tmp_src,
inst->Instruction.Saturate);
}
/* ADD dst.y, s0.x, -tmp */
if (inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_Y) {
struct tgsi_full_dst_register dst_y =
writemask_dst(&move_dst, TGSI_WRITEMASK_Y);
struct tgsi_full_src_register neg_tmp_src = negate_src(&tmp_src);
emit_instruction_op2(emit, VGPU10_OPCODE_ADD, &dst_y, &src_xxxx,
&neg_tmp_src, inst->Instruction.Saturate);
}
/* EXP dst.z, s0.x */
if (inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_Z) {
struct tgsi_full_dst_register dst_z =
writemask_dst(&move_dst, TGSI_WRITEMASK_Z);
emit_instruction_op1(emit, VGPU10_OPCODE_EXP, &dst_z, &src_xxxx,
inst->Instruction.Saturate);
}
/* MOV dst.w, 1.0 */
if (inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_W) {
struct tgsi_full_dst_register dst_w =
writemask_dst(&move_dst, TGSI_WRITEMASK_W);
struct tgsi_full_src_register one = make_immediate_reg_float(emit, 1.0f);
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &dst_w, &one,
FALSE);
}
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &inst->Dst[0], &move_src,
FALSE);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_IF instruction.
*/
static boolean
emit_if(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
VGPU10OpcodeToken0 opcode0;
/* The src register should be a scalar */
assert(inst->Src[0].Register.SwizzleX == inst->Src[0].Register.SwizzleY &&
inst->Src[0].Register.SwizzleX == inst->Src[0].Register.SwizzleZ &&
inst->Src[0].Register.SwizzleX == inst->Src[0].Register.SwizzleW);
/* The only special thing here is that we need to set the
* VGPU10_INSTRUCTION_TEST_NONZERO flag since we want to test if
* src.x is non-zero.
*/
opcode0.value = 0;
opcode0.opcodeType = VGPU10_OPCODE_IF;
opcode0.testBoolean = VGPU10_INSTRUCTION_TEST_NONZERO;
begin_emit_instruction(emit);
emit_dword(emit, opcode0.value);
emit_src_register(emit, &inst->Src[0]);
end_emit_instruction(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_KILL_IF instruction (kill fragment if any of
* the register components are negative).
*/
static boolean
emit_kill_if(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
unsigned tmp = get_temp_index(emit);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
struct tgsi_full_src_register zero = make_immediate_reg_float(emit, 0.0f);
struct tgsi_full_dst_register tmp_dst_x =
writemask_dst(&tmp_dst, TGSI_WRITEMASK_X);
struct tgsi_full_src_register tmp_src_xxxx =
scalar_src(&tmp_src, TGSI_SWIZZLE_X);
/* tmp = src[0] < 0.0 */
emit_instruction_op2(emit, VGPU10_OPCODE_LT, &tmp_dst, &inst->Src[0],
&zero, FALSE);
if (!same_swizzle_terms(&inst->Src[0])) {
/* If the swizzle is not XXXX, YYYY, ZZZZ or WWWW we need to
* logically OR the swizzle terms. Most uses of KILL_IF only
* test one channel so it's good to avoid these extra steps.
*/
struct tgsi_full_src_register tmp_src_yyyy =
scalar_src(&tmp_src, TGSI_SWIZZLE_Y);
struct tgsi_full_src_register tmp_src_zzzz =
scalar_src(&tmp_src, TGSI_SWIZZLE_Z);
struct tgsi_full_src_register tmp_src_wwww =
scalar_src(&tmp_src, TGSI_SWIZZLE_W);
emit_instruction_op2(emit, VGPU10_OPCODE_OR, &tmp_dst_x, &tmp_src_xxxx,
&tmp_src_yyyy, FALSE);
emit_instruction_op2(emit, VGPU10_OPCODE_OR, &tmp_dst_x, &tmp_src_xxxx,
&tmp_src_zzzz, FALSE);
emit_instruction_op2(emit, VGPU10_OPCODE_OR, &tmp_dst_x, &tmp_src_xxxx,
&tmp_src_wwww, FALSE);
}
begin_emit_instruction(emit);
emit_discard_opcode(emit, TRUE); /* discard if src0.x is non-zero */
emit_src_register(emit, &tmp_src_xxxx);
end_emit_instruction(emit);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_KILL instruction (unconditional discard).
*/
static boolean
emit_kill(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
struct tgsi_full_src_register zero = make_immediate_reg_float(emit, 0.0f);
/* DISCARD if 0.0 is zero */
begin_emit_instruction(emit);
emit_discard_opcode(emit, FALSE);
emit_src_register(emit, &zero);
end_emit_instruction(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_LG2 instruction.
*/
static boolean
emit_lg2(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
/* Note that TGSI_OPCODE_LG2 computes only one value from src.x
* while VGPU10 computes four values.
*
* dst = LG2(src):
* dst.xyzw = log2(src.x)
*/
struct tgsi_full_src_register src_xxxx =
swizzle_src(&inst->Src[0], TGSI_SWIZZLE_X, TGSI_SWIZZLE_X,
TGSI_SWIZZLE_X, TGSI_SWIZZLE_X);
/* LOG tmp, s0.xxxx */
emit_instruction_op1(emit, VGPU10_OPCODE_LOG, &inst->Dst[0], &src_xxxx,
inst->Instruction.Saturate);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_LIT instruction.
*/
static boolean
emit_lit(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
struct tgsi_full_src_register one = make_immediate_reg_float(emit, 1.0f);
/*
* If dst and src are the same we need to create
* a temporary for it and insert a extra move.
*/
unsigned tmp_move = get_temp_index(emit);
struct tgsi_full_src_register move_src = make_src_temp_reg(tmp_move);
struct tgsi_full_dst_register move_dst = make_dst_temp_reg(tmp_move);
/*
* dst.x = 1
* dst.y = max(src.x, 0)
* dst.z = (src.x > 0) ? max(src.y, 0)^{clamp(src.w, -128, 128))} : 0
* dst.w = 1
*/
/* MOV dst.x, 1.0 */
if (inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_X) {
struct tgsi_full_dst_register dst_x =
writemask_dst(&move_dst, TGSI_WRITEMASK_X);
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &dst_x, &one, FALSE);
}
/* MOV dst.w, 1.0 */
if (inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_W) {
struct tgsi_full_dst_register dst_w =
writemask_dst(&move_dst, TGSI_WRITEMASK_W);
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &dst_w, &one, FALSE);
}
/* MAX dst.y, src.x, 0.0 */
if (inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_Y) {
struct tgsi_full_dst_register dst_y =
writemask_dst(&move_dst, TGSI_WRITEMASK_Y);
struct tgsi_full_src_register zero =
make_immediate_reg_float(emit, 0.0f);
struct tgsi_full_src_register src_xxxx =
swizzle_src(&inst->Src[0], TGSI_SWIZZLE_X, TGSI_SWIZZLE_X,
TGSI_SWIZZLE_X, TGSI_SWIZZLE_X);
emit_instruction_op2(emit, VGPU10_OPCODE_MAX, &dst_y, &src_xxxx,
&zero, inst->Instruction.Saturate);
}
/*
* tmp1 = clamp(src.w, -128, 128);
* MAX tmp1, src.w, -128
* MIN tmp1, tmp1, 128
*
* tmp2 = max(tmp2, 0);
* MAX tmp2, src.y, 0
*
* tmp1 = pow(tmp2, tmp1);
* LOG tmp2, tmp2
* MUL tmp1, tmp2, tmp1
* EXP tmp1, tmp1
*
* tmp1 = (src.w == 0) ? 1 : tmp1;
* EQ tmp2, 0, src.w
* MOVC tmp1, tmp2, 1.0, tmp1
*
* dst.z = (0 < src.x) ? tmp1 : 0;
* LT tmp2, 0, src.x
* MOVC dst.z, tmp2, tmp1, 0.0
*/
if (inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_Z) {
struct tgsi_full_dst_register dst_z =
writemask_dst(&move_dst, TGSI_WRITEMASK_Z);
unsigned tmp1 = get_temp_index(emit);
struct tgsi_full_src_register tmp1_src = make_src_temp_reg(tmp1);
struct tgsi_full_dst_register tmp1_dst = make_dst_temp_reg(tmp1);
unsigned tmp2 = get_temp_index(emit);
struct tgsi_full_src_register tmp2_src = make_src_temp_reg(tmp2);
struct tgsi_full_dst_register tmp2_dst = make_dst_temp_reg(tmp2);
struct tgsi_full_src_register src_xxxx =
scalar_src(&inst->Src[0], TGSI_SWIZZLE_X);
struct tgsi_full_src_register src_yyyy =
scalar_src(&inst->Src[0], TGSI_SWIZZLE_Y);
struct tgsi_full_src_register src_wwww =
scalar_src(&inst->Src[0], TGSI_SWIZZLE_W);
struct tgsi_full_src_register zero =
make_immediate_reg_float(emit, 0.0f);
struct tgsi_full_src_register lowerbound =
make_immediate_reg_float(emit, -128.0f);
struct tgsi_full_src_register upperbound =
make_immediate_reg_float(emit, 128.0f);
emit_instruction_op2(emit, VGPU10_OPCODE_MAX, &tmp1_dst, &src_wwww,
&lowerbound, FALSE);
emit_instruction_op2(emit, VGPU10_OPCODE_MIN, &tmp1_dst, &tmp1_src,
&upperbound, FALSE);
emit_instruction_op2(emit, VGPU10_OPCODE_MAX, &tmp2_dst, &src_yyyy,
&zero, FALSE);
/* POW tmp1, tmp2, tmp1 */
/* LOG tmp2, tmp2 */
emit_instruction_op1(emit, VGPU10_OPCODE_LOG, &tmp2_dst, &tmp2_src,
FALSE);
/* MUL tmp1, tmp2, tmp1 */
emit_instruction_op2(emit, VGPU10_OPCODE_MUL, &tmp1_dst, &tmp2_src,
&tmp1_src, FALSE);
/* EXP tmp1, tmp1 */
emit_instruction_op1(emit, VGPU10_OPCODE_EXP, &tmp1_dst, &tmp1_src,
FALSE);
/* EQ tmp2, 0, src.w */
emit_instruction_op2(emit, VGPU10_OPCODE_EQ, &tmp2_dst, &zero,
&src_wwww, FALSE);
/* MOVC tmp1.z, tmp2, tmp1, 1.0 */
emit_instruction_op3(emit, VGPU10_OPCODE_MOVC, &tmp1_dst,
&tmp2_src, &one, &tmp1_src, FALSE);
/* LT tmp2, 0, src.x */
emit_instruction_op2(emit, VGPU10_OPCODE_LT, &tmp2_dst, &zero,
&src_xxxx, FALSE);
/* MOVC dst.z, tmp2, tmp1, 0.0 */
emit_instruction_op3(emit, VGPU10_OPCODE_MOVC, &dst_z,
&tmp2_src, &tmp1_src, &zero, FALSE);
}
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &inst->Dst[0], &move_src,
FALSE);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_LOG instruction.
*/
static boolean
emit_log(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
/*
* dst.x = floor(lg2(abs(s0.x)))
* dst.y = abs(s0.x) / (2 ^ floor(lg2(abs(s0.x))))
* dst.z = lg2(abs(s0.x))
* dst.w = 1.0
*/
struct tgsi_full_src_register src_xxxx =
scalar_src(&inst->Src[0], TGSI_SWIZZLE_X);
unsigned tmp = get_temp_index(emit);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
struct tgsi_full_src_register abs_src_xxxx = absolute_src(&src_xxxx);
/* only use X component of temp reg */
tmp_dst = writemask_dst(&tmp_dst, TGSI_WRITEMASK_X);
tmp_src = scalar_src(&tmp_src, TGSI_SWIZZLE_X);
/* LOG tmp.x, abs(s0.x) */
if (inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_XYZ) {
emit_instruction_op1(emit, VGPU10_OPCODE_LOG, &tmp_dst,
&abs_src_xxxx, FALSE);
}
/* MOV dst.z, tmp.x */
if (inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_Z) {
struct tgsi_full_dst_register dst_z =
writemask_dst(&inst->Dst[0], TGSI_WRITEMASK_Z);
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &dst_z,
&tmp_src, inst->Instruction.Saturate);
}
/* FLR tmp.x, tmp.x */
if (inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_XY) {
emit_instruction_op1(emit, VGPU10_OPCODE_ROUND_NI, &tmp_dst,
&tmp_src, FALSE);
}
/* MOV dst.x, tmp.x */
if (inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_X) {
struct tgsi_full_dst_register dst_x =
writemask_dst(&inst->Dst[0], TGSI_WRITEMASK_X);
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &dst_x, &tmp_src,
inst->Instruction.Saturate);
}
/* EXP tmp.x, tmp.x */
/* DIV dst.y, abs(s0.x), tmp.x */
if (inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_Y) {
struct tgsi_full_dst_register dst_y =
writemask_dst(&inst->Dst[0], TGSI_WRITEMASK_Y);
emit_instruction_op1(emit, VGPU10_OPCODE_EXP, &tmp_dst, &tmp_src,
FALSE);
emit_instruction_op2(emit, VGPU10_OPCODE_DIV, &dst_y, &abs_src_xxxx,
&tmp_src, inst->Instruction.Saturate);
}
/* MOV dst.w, 1.0 */
if (inst->Dst[0].Register.WriteMask & TGSI_WRITEMASK_W) {
struct tgsi_full_dst_register dst_w =
writemask_dst(&inst->Dst[0], TGSI_WRITEMASK_W);
struct tgsi_full_src_register one =
make_immediate_reg_float(emit, 1.0f);
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &dst_w, &one, FALSE);
}
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_LRP instruction.
*/
static boolean
emit_lrp(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
/* dst = LRP(s0, s1, s2):
* dst = s0 * (s1 - s2) + s2
* Translates into:
* SUB tmp, s1, s2; tmp = s1 - s2
* MAD dst, s0, tmp, s2; dst = s0 * t1 + s2
*/
unsigned tmp = get_temp_index(emit);
struct tgsi_full_src_register src_tmp = make_src_temp_reg(tmp);
struct tgsi_full_dst_register dst_tmp = make_dst_temp_reg(tmp);
struct tgsi_full_src_register neg_src2 = negate_src(&inst->Src[2]);
/* ADD tmp, s1, -s2 */
emit_instruction_op2(emit, VGPU10_OPCODE_ADD, &dst_tmp,
&inst->Src[1], &neg_src2, FALSE);
/* MAD dst, s1, tmp, s3 */
emit_instruction_op3(emit, VGPU10_OPCODE_MAD, &inst->Dst[0],
&inst->Src[0], &src_tmp, &inst->Src[2],
inst->Instruction.Saturate);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_POW instruction.
*/
static boolean
emit_pow(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
/* Note that TGSI_OPCODE_POW computes only one value from src0.x and
* src1.x while VGPU10 computes four values.
*
* dst = POW(src0, src1):
* dst.xyzw = src0.x ^ src1.x
*/
unsigned tmp = get_temp_index(emit);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
struct tgsi_full_src_register src0_xxxx =
swizzle_src(&inst->Src[0], TGSI_SWIZZLE_X, TGSI_SWIZZLE_X,
TGSI_SWIZZLE_X, TGSI_SWIZZLE_X);
struct tgsi_full_src_register src1_xxxx =
swizzle_src(&inst->Src[1], TGSI_SWIZZLE_X, TGSI_SWIZZLE_X,
TGSI_SWIZZLE_X, TGSI_SWIZZLE_X);
/* LOG tmp, s0.xxxx */
emit_instruction_op1(emit, VGPU10_OPCODE_LOG, &tmp_dst, &src0_xxxx,
FALSE);
/* MUL tmp, tmp, s1.xxxx */
emit_instruction_op2(emit, VGPU10_OPCODE_MUL, &tmp_dst, &tmp_src,
&src1_xxxx, FALSE);
/* EXP tmp, s0.xxxx */
emit_instruction_op1(emit, VGPU10_OPCODE_EXP, &inst->Dst[0],
&tmp_src, inst->Instruction.Saturate);
/* free tmp */
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_RCP (reciprocal) instruction.
*/
static boolean
emit_rcp(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
struct tgsi_full_src_register one = make_immediate_reg_float(emit, 1.0f);
unsigned tmp = get_temp_index(emit);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst_x =
writemask_dst(&tmp_dst, TGSI_WRITEMASK_X);
struct tgsi_full_src_register tmp_src_xxxx =
scalar_src(&tmp_src, TGSI_SWIZZLE_X);
/* DIV tmp.x, 1.0, s0 */
emit_instruction_op2(emit, VGPU10_OPCODE_DIV, &tmp_dst_x, &one,
&inst->Src[0], FALSE);
/* MOV dst, tmp.xxxx */
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &inst->Dst[0],
&tmp_src_xxxx, inst->Instruction.Saturate);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_RSQ instruction.
*/
static boolean
emit_rsq(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
/* dst = RSQ(src):
* dst.xyzw = 1 / sqrt(src.x)
* Translates into:
* RSQ tmp, src.x
* MOV dst, tmp.xxxx
*/
unsigned tmp = get_temp_index(emit);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst_x =
writemask_dst(&tmp_dst, TGSI_WRITEMASK_X);
struct tgsi_full_src_register tmp_src_xxxx =
scalar_src(&tmp_src, TGSI_SWIZZLE_X);
/* RSQ tmp, src.x */
emit_instruction_op1(emit, VGPU10_OPCODE_RSQ, &tmp_dst_x,
&inst->Src[0], FALSE);
/* MOV dst, tmp.xxxx */
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &inst->Dst[0],
&tmp_src_xxxx, inst->Instruction.Saturate);
/* free tmp */
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_SEQ (Set Equal) instruction.
*/
static boolean
emit_seq(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
/* dst = SEQ(s0, s1):
* dst = s0 == s1 ? 1.0 : 0.0 (per component)
* Translates into:
* EQ tmp, s0, s1; tmp = s0 == s1 : 0xffffffff : 0 (per comp)
* MOVC dst, tmp, 1.0, 0.0; dst = tmp ? 1.0 : 0.0 (per component)
*/
unsigned tmp = get_temp_index(emit);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
struct tgsi_full_src_register zero = make_immediate_reg_float(emit, 0.0f);
struct tgsi_full_src_register one = make_immediate_reg_float(emit, 1.0f);
/* EQ tmp, s0, s1 */
emit_instruction_op2(emit, VGPU10_OPCODE_EQ, &tmp_dst, &inst->Src[0],
&inst->Src[1], FALSE);
/* MOVC dst, tmp, one, zero */
emit_instruction_op3(emit, VGPU10_OPCODE_MOVC, &inst->Dst[0], &tmp_src,
&one, &zero, FALSE);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_SGE (Set Greater than or Equal) instruction.
*/
static boolean
emit_sge(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
/* dst = SGE(s0, s1):
* dst = s0 >= s1 ? 1.0 : 0.0 (per component)
* Translates into:
* GE tmp, s0, s1; tmp = s0 >= s1 : 0xffffffff : 0 (per comp)
* MOVC dst, tmp, 1.0, 0.0; dst = tmp ? 1.0 : 0.0 (per component)
*/
unsigned tmp = get_temp_index(emit);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
struct tgsi_full_src_register zero = make_immediate_reg_float(emit, 0.0f);
struct tgsi_full_src_register one = make_immediate_reg_float(emit, 1.0f);
/* GE tmp, s0, s1 */
emit_instruction_op2(emit, VGPU10_OPCODE_GE, &tmp_dst, &inst->Src[0],
&inst->Src[1], FALSE);
/* MOVC dst, tmp, one, zero */
emit_instruction_op3(emit, VGPU10_OPCODE_MOVC, &inst->Dst[0], &tmp_src,
&one, &zero, FALSE);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_SGT (Set Greater than) instruction.
*/
static boolean
emit_sgt(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
/* dst = SGT(s0, s1):
* dst = s0 > s1 ? 1.0 : 0.0 (per component)
* Translates into:
* LT tmp, s1, s0; tmp = s1 < s0 ? 0xffffffff : 0 (per comp)
* MOVC dst, tmp, 1.0, 0.0; dst = tmp ? 1.0 : 0.0 (per component)
*/
unsigned tmp = get_temp_index(emit);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
struct tgsi_full_src_register zero = make_immediate_reg_float(emit, 0.0f);
struct tgsi_full_src_register one = make_immediate_reg_float(emit, 1.0f);
/* LT tmp, s1, s0 */
emit_instruction_op2(emit, VGPU10_OPCODE_LT, &tmp_dst, &inst->Src[1],
&inst->Src[0], FALSE);
/* MOVC dst, tmp, one, zero */
emit_instruction_op3(emit, VGPU10_OPCODE_MOVC, &inst->Dst[0], &tmp_src,
&one, &zero, FALSE);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_SIN and TGSI_OPCODE_COS instructions.
*/
static boolean
emit_sincos(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
unsigned tmp = get_temp_index(emit);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
struct tgsi_full_src_register tmp_src_xxxx =
scalar_src(&tmp_src, TGSI_SWIZZLE_X);
struct tgsi_full_dst_register tmp_dst_x =
writemask_dst(&tmp_dst, TGSI_WRITEMASK_X);
begin_emit_instruction(emit);
emit_opcode(emit, VGPU10_OPCODE_SINCOS, FALSE);
if(inst->Instruction.Opcode == TGSI_OPCODE_SIN)
{
emit_dst_register(emit, &tmp_dst_x); /* first destination register */
emit_null_dst_register(emit); /* second destination register */
}
else {
emit_null_dst_register(emit);
emit_dst_register(emit, &tmp_dst_x);
}
emit_src_register(emit, &inst->Src[0]);
end_emit_instruction(emit);
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &inst->Dst[0],
&tmp_src_xxxx, inst->Instruction.Saturate);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_SLE (Set Less than or Equal) instruction.
*/
static boolean
emit_sle(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
/* dst = SLE(s0, s1):
* dst = s0 <= s1 ? 1.0 : 0.0 (per component)
* Translates into:
* GE tmp, s1, s0; tmp = s1 >= s0 : 0xffffffff : 0 (per comp)
* MOVC dst, tmp, 1.0, 0.0; dst = tmp ? 1.0 : 0.0 (per component)
*/
unsigned tmp = get_temp_index(emit);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
struct tgsi_full_src_register zero = make_immediate_reg_float(emit, 0.0f);
struct tgsi_full_src_register one = make_immediate_reg_float(emit, 1.0f);
/* GE tmp, s1, s0 */
emit_instruction_op2(emit, VGPU10_OPCODE_GE, &tmp_dst, &inst->Src[1],
&inst->Src[0], FALSE);
/* MOVC dst, tmp, one, zero */
emit_instruction_op3(emit, VGPU10_OPCODE_MOVC, &inst->Dst[0], &tmp_src,
&one, &zero, FALSE);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_SLT (Set Less than) instruction.
*/
static boolean
emit_slt(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
/* dst = SLT(s0, s1):
* dst = s0 < s1 ? 1.0 : 0.0 (per component)
* Translates into:
* LT tmp, s0, s1; tmp = s0 < s1 ? 0xffffffff : 0 (per comp)
* MOVC dst, tmp, 1.0, 0.0; dst = tmp ? 1.0 : 0.0 (per component)
*/
unsigned tmp = get_temp_index(emit);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
struct tgsi_full_src_register zero = make_immediate_reg_float(emit, 0.0f);
struct tgsi_full_src_register one = make_immediate_reg_float(emit, 1.0f);
/* LT tmp, s0, s1 */
emit_instruction_op2(emit, VGPU10_OPCODE_LT, &tmp_dst, &inst->Src[0],
&inst->Src[1], FALSE);
/* MOVC dst, tmp, one, zero */
emit_instruction_op3(emit, VGPU10_OPCODE_MOVC, &inst->Dst[0], &tmp_src,
&one, &zero, FALSE);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_SNE (Set Not Equal) instruction.
*/
static boolean
emit_sne(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
/* dst = SNE(s0, s1):
* dst = s0 != s1 ? 1.0 : 0.0 (per component)
* Translates into:
* EQ tmp, s0, s1; tmp = s0 == s1 : 0xffffffff : 0 (per comp)
* MOVC dst, tmp, 1.0, 0.0; dst = tmp ? 1.0 : 0.0 (per component)
*/
unsigned tmp = get_temp_index(emit);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
struct tgsi_full_src_register zero = make_immediate_reg_float(emit, 0.0f);
struct tgsi_full_src_register one = make_immediate_reg_float(emit, 1.0f);
/* NE tmp, s0, s1 */
emit_instruction_op2(emit, VGPU10_OPCODE_NE, &tmp_dst, &inst->Src[0],
&inst->Src[1], FALSE);
/* MOVC dst, tmp, one, zero */
emit_instruction_op3(emit, VGPU10_OPCODE_MOVC, &inst->Dst[0], &tmp_src,
&one, &zero, FALSE);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_SSG (Set Sign) instruction.
*/
static boolean
emit_ssg(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
/* dst.x = (src.x > 0.0) ? 1.0 : (src.x < 0.0) ? -1.0 : 0.0
* dst.y = (src.y > 0.0) ? 1.0 : (src.y < 0.0) ? -1.0 : 0.0
* dst.z = (src.z > 0.0) ? 1.0 : (src.z < 0.0) ? -1.0 : 0.0
* dst.w = (src.w > 0.0) ? 1.0 : (src.w < 0.0) ? -1.0 : 0.0
* Translates into:
* LT tmp1, src, zero; tmp1 = src < zero ? 0xffffffff : 0 (per comp)
* MOVC tmp2, tmp1, -1.0, 0.0; tmp2 = tmp1 ? -1.0 : 0.0 (per component)
* LT tmp1, zero, src; tmp1 = zero < src ? 0xffffffff : 0 (per comp)
* MOVC dst, tmp1, 1.0, tmp2; dst = tmp1 ? 1.0 : tmp2 (per component)
*/
struct tgsi_full_src_register zero =
make_immediate_reg_float(emit, 0.0f);
struct tgsi_full_src_register one =
make_immediate_reg_float(emit, 1.0f);
struct tgsi_full_src_register neg_one =
make_immediate_reg_float(emit, -1.0f);
unsigned tmp1 = get_temp_index(emit);
struct tgsi_full_src_register tmp1_src = make_src_temp_reg(tmp1);
struct tgsi_full_dst_register tmp1_dst = make_dst_temp_reg(tmp1);
unsigned tmp2 = get_temp_index(emit);
struct tgsi_full_src_register tmp2_src = make_src_temp_reg(tmp2);
struct tgsi_full_dst_register tmp2_dst = make_dst_temp_reg(tmp2);
emit_instruction_op2(emit, VGPU10_OPCODE_LT, &tmp1_dst, &inst->Src[0],
&zero, FALSE);
emit_instruction_op3(emit, VGPU10_OPCODE_MOVC, &tmp2_dst, &tmp1_src,
&neg_one, &zero, FALSE);
emit_instruction_op2(emit, VGPU10_OPCODE_LT, &tmp1_dst, &zero,
&inst->Src[0], FALSE);
emit_instruction_op3(emit, VGPU10_OPCODE_MOVC, &inst->Dst[0], &tmp1_src,
&one, &tmp2_src, FALSE);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_ISSG (Integer Set Sign) instruction.
*/
static boolean
emit_issg(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
/* dst.x = (src.x > 0) ? 1 : (src.x < 0) ? -1 : 0
* dst.y = (src.y > 0) ? 1 : (src.y < 0) ? -1 : 0
* dst.z = (src.z > 0) ? 1 : (src.z < 0) ? -1 : 0
* dst.w = (src.w > 0) ? 1 : (src.w < 0) ? -1 : 0
* Translates into:
* ILT tmp1, src, 0 tmp1 = src < 0 ? -1 : 0 (per component)
* ILT tmp2, 0, src tmp2 = 0 < src ? -1 : 0 (per component)
* IADD dst, tmp1, neg(tmp2) dst = tmp1 - tmp2 (per component)
*/
struct tgsi_full_src_register zero = make_immediate_reg_float(emit, 0.0f);
unsigned tmp1 = get_temp_index(emit);
struct tgsi_full_src_register tmp1_src = make_src_temp_reg(tmp1);
struct tgsi_full_dst_register tmp1_dst = make_dst_temp_reg(tmp1);
unsigned tmp2 = get_temp_index(emit);
struct tgsi_full_src_register tmp2_src = make_src_temp_reg(tmp2);
struct tgsi_full_dst_register tmp2_dst = make_dst_temp_reg(tmp2);
struct tgsi_full_src_register neg_tmp2 = negate_src(&tmp2_src);
emit_instruction_op2(emit, VGPU10_OPCODE_ILT, &tmp1_dst,
&inst->Src[0], &zero, FALSE);
emit_instruction_op2(emit, VGPU10_OPCODE_ILT, &tmp2_dst,
&zero, &inst->Src[0], FALSE);
emit_instruction_op2(emit, VGPU10_OPCODE_IADD, &inst->Dst[0],
&tmp1_src, &neg_tmp2, FALSE);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit a comparison instruction. The dest register will get
* 0 or ~0 values depending on the outcome of comparing src0 to src1.
*/
static void
emit_comparison(struct svga_shader_emitter_v10 *emit,
SVGA3dCmpFunc func,
const struct tgsi_full_dst_register *dst,
const struct tgsi_full_src_register *src0,
const struct tgsi_full_src_register *src1)
{
struct tgsi_full_src_register immediate;
VGPU10OpcodeToken0 opcode0;
boolean swapSrc = FALSE;
/* Sanity checks for svga vs. gallium enums */
STATIC_ASSERT(SVGA3D_CMP_LESS == (PIPE_FUNC_LESS + 1));
STATIC_ASSERT(SVGA3D_CMP_GREATEREQUAL == (PIPE_FUNC_GEQUAL + 1));
opcode0.value = 0;
switch (func) {
case SVGA3D_CMP_NEVER:
immediate = make_immediate_reg_int(emit, 0);
/* MOV dst, {0} */
begin_emit_instruction(emit);
emit_dword(emit, VGPU10_OPCODE_MOV);
emit_dst_register(emit, dst);
emit_src_register(emit, &immediate);
end_emit_instruction(emit);
return;
case SVGA3D_CMP_ALWAYS:
immediate = make_immediate_reg_int(emit, -1);
/* MOV dst, {-1} */
begin_emit_instruction(emit);
emit_dword(emit, VGPU10_OPCODE_MOV);
emit_dst_register(emit, dst);
emit_src_register(emit, &immediate);
end_emit_instruction(emit);
return;
case SVGA3D_CMP_LESS:
opcode0.opcodeType = VGPU10_OPCODE_LT;
break;
case SVGA3D_CMP_EQUAL:
opcode0.opcodeType = VGPU10_OPCODE_EQ;
break;
case SVGA3D_CMP_LESSEQUAL:
opcode0.opcodeType = VGPU10_OPCODE_GE;
swapSrc = TRUE;
break;
case SVGA3D_CMP_GREATER:
opcode0.opcodeType = VGPU10_OPCODE_LT;
swapSrc = TRUE;
break;
case SVGA3D_CMP_NOTEQUAL:
opcode0.opcodeType = VGPU10_OPCODE_NE;
break;
case SVGA3D_CMP_GREATEREQUAL:
opcode0.opcodeType = VGPU10_OPCODE_GE;
break;
default:
assert(!"Unexpected comparison mode");
opcode0.opcodeType = VGPU10_OPCODE_EQ;
}
begin_emit_instruction(emit);
emit_dword(emit, opcode0.value);
emit_dst_register(emit, dst);
if (swapSrc) {
emit_src_register(emit, src1);
emit_src_register(emit, src0);
}
else {
emit_src_register(emit, src0);
emit_src_register(emit, src1);
}
end_emit_instruction(emit);
}
/**
* Get texel/address offsets for a texture instruction.
*/
static void
get_texel_offsets(const struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst, int offsets[3])
{
if (inst->Texture.NumOffsets == 1) {
/* According to OpenGL Shader Language spec the offsets are only
* fetched from a previously-declared immediate/literal.
*/
const struct tgsi_texture_offset *off = inst->TexOffsets;
const unsigned index = off[0].Index;
const unsigned swizzleX = off[0].SwizzleX;
const unsigned swizzleY = off[0].SwizzleY;
const unsigned swizzleZ = off[0].SwizzleZ;
const union tgsi_immediate_data *imm = emit->immediates[index];
assert(inst->TexOffsets[0].File == TGSI_FILE_IMMEDIATE);
offsets[0] = imm[swizzleX].Int;
offsets[1] = imm[swizzleY].Int;
offsets[2] = imm[swizzleZ].Int;
}
else {
offsets[0] = offsets[1] = offsets[2] = 0;
}
}
/**
* Set up the coordinate register for texture sampling.
* When we're sampling from a RECT texture we have to scale the
* unnormalized coordinate to a normalized coordinate.
* We do that by multiplying the coordinate by an "extra" constant.
* An alternative would be to use the RESINFO instruction to query the
* texture's size.
*/
static struct tgsi_full_src_register
setup_texcoord(struct svga_shader_emitter_v10 *emit,
unsigned unit,
const struct tgsi_full_src_register *coord)
{
if (emit->key.tex[unit].unnormalized) {
unsigned scale_index = emit->texcoord_scale_index[unit];
unsigned tmp = get_temp_index(emit);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
struct tgsi_full_src_register scale_src = make_src_const_reg(scale_index);
if (emit->key.tex[unit].texel_bias) {
/* to fix texture coordinate rounding issue, 0.0001 offset is
* been added. This fixes piglit test fbo-blit-scaled-linear. */
struct tgsi_full_src_register offset =
make_immediate_reg_float(emit, 0.0001f);
/* ADD tmp, coord, offset */
emit_instruction_op2(emit, VGPU10_OPCODE_ADD, &tmp_dst,
coord, &offset, FALSE);
/* MUL tmp, tmp, scale */
emit_instruction_op2(emit, VGPU10_OPCODE_MUL, &tmp_dst,
&tmp_src, &scale_src, FALSE);
}
else {
/* MUL tmp, coord, const[] */
emit_instruction_op2(emit, VGPU10_OPCODE_MUL, &tmp_dst,
coord, &scale_src, FALSE);
}
return tmp_src;
}
else {
/* use texcoord as-is */
return *coord;
}
}
/**
* For SAMPLE_C instructions, emit the extra src register which indicates
* the reference/comparision value.
*/
static void
emit_tex_compare_refcoord(struct svga_shader_emitter_v10 *emit,
enum tgsi_texture_type target,
const struct tgsi_full_src_register *coord)
{
struct tgsi_full_src_register coord_src_ref;
int component;
assert(tgsi_is_shadow_target(target));
component = tgsi_util_get_shadow_ref_src_index(target) % 4;
assert(component >= 0);
coord_src_ref = scalar_src(coord, component);
emit_src_register(emit, &coord_src_ref);
}
/**
* Info for implementing texture swizzles.
* The begin_tex_swizzle(), get_tex_swizzle_dst() and end_tex_swizzle()
* functions use this to encapsulate the extra steps needed to perform
* a texture swizzle, or shadow/depth comparisons.
* The shadow/depth comparison is only done here if for the cases where
* there's no VGPU10 opcode (like texture bias lookup w/ shadow compare).
*/
struct tex_swizzle_info
{
boolean swizzled;
boolean shadow_compare;
unsigned unit;
enum tgsi_texture_type texture_target; /**< TGSI_TEXTURE_x */
struct tgsi_full_src_register tmp_src;
struct tgsi_full_dst_register tmp_dst;
const struct tgsi_full_dst_register *inst_dst;
const struct tgsi_full_src_register *coord_src;
};
/**
* Do setup for handling texture swizzles or shadow compares.
* \param unit the texture unit
* \param inst the TGSI texture instruction
* \param shadow_compare do shadow/depth comparison?
* \param swz returns the swizzle info
*/
static void
begin_tex_swizzle(struct svga_shader_emitter_v10 *emit,
unsigned unit,
const struct tgsi_full_instruction *inst,
boolean shadow_compare,
struct tex_swizzle_info *swz)
{
swz->swizzled = (emit->key.tex[unit].swizzle_r != TGSI_SWIZZLE_X ||
emit->key.tex[unit].swizzle_g != TGSI_SWIZZLE_Y ||
emit->key.tex[unit].swizzle_b != TGSI_SWIZZLE_Z ||
emit->key.tex[unit].swizzle_a != TGSI_SWIZZLE_W);
swz->shadow_compare = shadow_compare;
swz->texture_target = inst->Texture.Texture;
if (swz->swizzled || shadow_compare) {
/* Allocate temp register for the result of the SAMPLE instruction
* and the source of the MOV/compare/swizzle instructions.
*/
unsigned tmp = get_temp_index(emit);
swz->tmp_src = make_src_temp_reg(tmp);
swz->tmp_dst = make_dst_temp_reg(tmp);
swz->unit = unit;
}
swz->inst_dst = &inst->Dst[0];
swz->coord_src = &inst->Src[0];
emit->fs.shadow_compare_units |= shadow_compare << unit;
}
/**
* Returns the register to put the SAMPLE instruction results into.
* This will either be the original instruction dst reg (if no swizzle
* and no shadow comparison) or a temporary reg if there is a swizzle.
*/
static const struct tgsi_full_dst_register *
get_tex_swizzle_dst(const struct tex_swizzle_info *swz)
{
return (swz->swizzled || swz->shadow_compare)
? &swz->tmp_dst : swz->inst_dst;
}
/**
* This emits the MOV instruction that actually implements a texture swizzle
* and/or shadow comparison.
*/
static void
end_tex_swizzle(struct svga_shader_emitter_v10 *emit,
const struct tex_swizzle_info *swz)
{
if (swz->shadow_compare) {
/* Emit extra instructions to compare the fetched texel value against
* a texture coordinate component. The result of the comparison
* is 0.0 or 1.0.
*/
struct tgsi_full_src_register coord_src;
struct tgsi_full_src_register texel_src =
scalar_src(&swz->tmp_src, TGSI_SWIZZLE_X);
struct tgsi_full_src_register one =
make_immediate_reg_float(emit, 1.0f);
/* convert gallium comparison func to SVGA comparison func */
SVGA3dCmpFunc compare_func = emit->key.tex[swz->unit].compare_func + 1;
assert(emit->unit == PIPE_SHADER_FRAGMENT);
int component =
tgsi_util_get_shadow_ref_src_index(swz->texture_target) % 4;
assert(component >= 0);
coord_src = scalar_src(swz->coord_src, component);
/* COMPARE tmp, coord, texel */
emit_comparison(emit, compare_func,
&swz->tmp_dst, &coord_src, &texel_src);
/* AND dest, tmp, {1.0} */
begin_emit_instruction(emit);
emit_opcode(emit, VGPU10_OPCODE_AND, FALSE);
if (swz->swizzled) {
emit_dst_register(emit, &swz->tmp_dst);
}
else {
emit_dst_register(emit, swz->inst_dst);
}
emit_src_register(emit, &swz->tmp_src);
emit_src_register(emit, &one);
end_emit_instruction(emit);
}
if (swz->swizzled) {
unsigned swz_r = emit->key.tex[swz->unit].swizzle_r;
unsigned swz_g = emit->key.tex[swz->unit].swizzle_g;
unsigned swz_b = emit->key.tex[swz->unit].swizzle_b;
unsigned swz_a = emit->key.tex[swz->unit].swizzle_a;
unsigned writemask_0 = 0, writemask_1 = 0;
boolean int_tex = is_integer_type(emit->sampler_return_type[swz->unit]);
/* Swizzle w/out zero/one terms */
struct tgsi_full_src_register src_swizzled =
swizzle_src(&swz->tmp_src,
swz_r < PIPE_SWIZZLE_0 ? swz_r : PIPE_SWIZZLE_X,
swz_g < PIPE_SWIZZLE_0 ? swz_g : PIPE_SWIZZLE_Y,
swz_b < PIPE_SWIZZLE_0 ? swz_b : PIPE_SWIZZLE_Z,
swz_a < PIPE_SWIZZLE_0 ? swz_a : PIPE_SWIZZLE_W);
/* MOV dst, color(tmp).<swizzle> */
emit_instruction_op1(emit, VGPU10_OPCODE_MOV,
swz->inst_dst, &src_swizzled, FALSE);
/* handle swizzle zero terms */
writemask_0 = (((swz_r == PIPE_SWIZZLE_0) << 0) |
((swz_g == PIPE_SWIZZLE_0) << 1) |
((swz_b == PIPE_SWIZZLE_0) << 2) |
((swz_a == PIPE_SWIZZLE_0) << 3));
writemask_0 &= swz->inst_dst->Register.WriteMask;
if (writemask_0) {
struct tgsi_full_src_register zero = int_tex ?
make_immediate_reg_int(emit, 0) :
make_immediate_reg_float(emit, 0.0f);
struct tgsi_full_dst_register dst =
writemask_dst(swz->inst_dst, writemask_0);
/* MOV dst.writemask_0, {0,0,0,0} */
emit_instruction_op1(emit, VGPU10_OPCODE_MOV,
&dst, &zero, FALSE);
}
/* handle swizzle one terms */
writemask_1 = (((swz_r == PIPE_SWIZZLE_1) << 0) |
((swz_g == PIPE_SWIZZLE_1) << 1) |
((swz_b == PIPE_SWIZZLE_1) << 2) |
((swz_a == PIPE_SWIZZLE_1) << 3));
writemask_1 &= swz->inst_dst->Register.WriteMask;
if (writemask_1) {
struct tgsi_full_src_register one = int_tex ?
make_immediate_reg_int(emit, 1) :
make_immediate_reg_float(emit, 1.0f);
struct tgsi_full_dst_register dst =
writemask_dst(swz->inst_dst, writemask_1);
/* MOV dst.writemask_1, {1,1,1,1} */
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &dst, &one, FALSE);
}
}
}
/**
* Emit code for TGSI_OPCODE_SAMPLE instruction.
*/
static boolean
emit_sample(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
const unsigned resource_unit = inst->Src[1].Register.Index;
const unsigned sampler_unit = inst->Src[2].Register.Index;
struct tgsi_full_src_register coord;
int offsets[3];
struct tex_swizzle_info swz_info;
begin_tex_swizzle(emit, sampler_unit, inst, FALSE, &swz_info);
get_texel_offsets(emit, inst, offsets);
coord = setup_texcoord(emit, resource_unit, &inst->Src[0]);
/* SAMPLE dst, coord(s0), resource, sampler */
begin_emit_instruction(emit);
/* NOTE: for non-fragment shaders, we should use VGPU10_OPCODE_SAMPLE_L
* with LOD=0. But our virtual GPU accepts this as-is.
*/
emit_sample_opcode(emit, VGPU10_OPCODE_SAMPLE,
inst->Instruction.Saturate, offsets);
emit_dst_register(emit, get_tex_swizzle_dst(&swz_info));
emit_src_register(emit, &coord);
emit_resource_register(emit, resource_unit);
emit_sampler_register(emit, sampler_unit);
end_emit_instruction(emit);
end_tex_swizzle(emit, &swz_info);
free_temp_indexes(emit);
return TRUE;
}
/**
* Check if a texture instruction is valid.
* An example of an invalid texture instruction is doing shadow comparison
* with an integer-valued texture.
* If we detect an invalid texture instruction, we replace it with:
* MOV dst, {1,1,1,1};
* \return TRUE if valid, FALSE if invalid.
*/
static boolean
is_valid_tex_instruction(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
const unsigned unit = inst->Src[1].Register.Index;
const enum tgsi_texture_type target = inst->Texture.Texture;
boolean valid = TRUE;
if (tgsi_is_shadow_target(target) &&
is_integer_type(emit->sampler_return_type[unit])) {
debug_printf("Invalid SAMPLE_C with an integer texture!\n");
valid = FALSE;
}
/* XXX might check for other conditions in the future here */
if (!valid) {
/* emit a MOV dst, {1,1,1,1} instruction. */
struct tgsi_full_src_register one = make_immediate_reg_float(emit, 1.0f);
begin_emit_instruction(emit);
emit_opcode(emit, VGPU10_OPCODE_MOV, FALSE);
emit_dst_register(emit, &inst->Dst[0]);
emit_src_register(emit, &one);
end_emit_instruction(emit);
}
return valid;
}
/**
* Emit code for TGSI_OPCODE_TEX (simple texture lookup)
*/
static boolean
emit_tex(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
const uint unit = inst->Src[1].Register.Index;
const enum tgsi_texture_type target = inst->Texture.Texture;
unsigned opcode;
struct tgsi_full_src_register coord;
int offsets[3];
struct tex_swizzle_info swz_info;
/* check that the sampler returns a float */
if (!is_valid_tex_instruction(emit, inst))
return TRUE;
begin_tex_swizzle(emit, unit, inst, FALSE, &swz_info);
get_texel_offsets(emit, inst, offsets);
coord = setup_texcoord(emit, unit, &inst->Src[0]);
/* SAMPLE dst, coord(s0), resource, sampler */
begin_emit_instruction(emit);
if (tgsi_is_shadow_target(target))
opcode = VGPU10_OPCODE_SAMPLE_C;
else
opcode = VGPU10_OPCODE_SAMPLE;
emit_sample_opcode(emit, opcode, inst->Instruction.Saturate, offsets);
emit_dst_register(emit, get_tex_swizzle_dst(&swz_info));
emit_src_register(emit, &coord);
emit_resource_register(emit, unit);
emit_sampler_register(emit, unit);
if (opcode == VGPU10_OPCODE_SAMPLE_C) {
emit_tex_compare_refcoord(emit, target, &coord);
}
end_emit_instruction(emit);
end_tex_swizzle(emit, &swz_info);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_TXP (projective texture)
*/
static boolean
emit_txp(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
const uint unit = inst->Src[1].Register.Index;
const enum tgsi_texture_type target = inst->Texture.Texture;
unsigned opcode;
int offsets[3];
unsigned tmp = get_temp_index(emit);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
struct tgsi_full_src_register src0_wwww =
scalar_src(&inst->Src[0], TGSI_SWIZZLE_W);
struct tgsi_full_src_register coord;
struct tex_swizzle_info swz_info;
/* check that the sampler returns a float */
if (!is_valid_tex_instruction(emit, inst))
return TRUE;
begin_tex_swizzle(emit, unit, inst, FALSE, &swz_info);
get_texel_offsets(emit, inst, offsets);
coord = setup_texcoord(emit, unit, &inst->Src[0]);
/* DIV tmp, coord, coord.wwww */
emit_instruction_op2(emit, VGPU10_OPCODE_DIV, &tmp_dst,
&coord, &src0_wwww, FALSE);
/* SAMPLE dst, coord(tmp), resource, sampler */
begin_emit_instruction(emit);
if (tgsi_is_shadow_target(target))
/* NOTE: for non-fragment shaders, we should use
* VGPU10_OPCODE_SAMPLE_C_LZ, but our virtual GPU accepts this as-is.
*/
opcode = VGPU10_OPCODE_SAMPLE_C;
else
opcode = VGPU10_OPCODE_SAMPLE;
emit_sample_opcode(emit, opcode, inst->Instruction.Saturate, offsets);
emit_dst_register(emit, get_tex_swizzle_dst(&swz_info));
emit_src_register(emit, &tmp_src); /* projected coord */
emit_resource_register(emit, unit);
emit_sampler_register(emit, unit);
if (opcode == VGPU10_OPCODE_SAMPLE_C) {
emit_tex_compare_refcoord(emit, target, &tmp_src);
}
end_emit_instruction(emit);
end_tex_swizzle(emit, &swz_info);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_TXD (explicit derivatives)
*/
static boolean
emit_txd(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
const uint unit = inst->Src[3].Register.Index;
const enum tgsi_texture_type target = inst->Texture.Texture;
int offsets[3];
struct tgsi_full_src_register coord;
struct tex_swizzle_info swz_info;
begin_tex_swizzle(emit, unit, inst, tgsi_is_shadow_target(target),
&swz_info);
get_texel_offsets(emit, inst, offsets);
coord = setup_texcoord(emit, unit, &inst->Src[0]);
/* SAMPLE_D dst, coord(s0), resource, sampler, Xderiv(s1), Yderiv(s2) */
begin_emit_instruction(emit);
emit_sample_opcode(emit, VGPU10_OPCODE_SAMPLE_D,
inst->Instruction.Saturate, offsets);
emit_dst_register(emit, get_tex_swizzle_dst(&swz_info));
emit_src_register(emit, &coord);
emit_resource_register(emit, unit);
emit_sampler_register(emit, unit);
emit_src_register(emit, &inst->Src[1]); /* Xderiv */
emit_src_register(emit, &inst->Src[2]); /* Yderiv */
end_emit_instruction(emit);
end_tex_swizzle(emit, &swz_info);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_TXF (texel fetch)
*/
static boolean
emit_txf(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
const uint unit = inst->Src[1].Register.Index;
const boolean msaa = tgsi_is_msaa_target(inst->Texture.Texture);
int offsets[3];
struct tex_swizzle_info swz_info;
begin_tex_swizzle(emit, unit, inst, FALSE, &swz_info);
get_texel_offsets(emit, inst, offsets);
if (msaa) {
/* Fetch one sample from an MSAA texture */
struct tgsi_full_src_register sampleIndex =
scalar_src(&inst->Src[0], TGSI_SWIZZLE_W);
/* LD_MS dst, coord(s0), resource, sampleIndex */
begin_emit_instruction(emit);
emit_sample_opcode(emit, VGPU10_OPCODE_LD_MS,
inst->Instruction.Saturate, offsets);
emit_dst_register(emit, get_tex_swizzle_dst(&swz_info));
emit_src_register(emit, &inst->Src[0]);
emit_resource_register(emit, unit);
emit_src_register(emit, &sampleIndex);
end_emit_instruction(emit);
}
else {
/* Fetch one texel specified by integer coordinate */
/* LD dst, coord(s0), resource */
begin_emit_instruction(emit);
emit_sample_opcode(emit, VGPU10_OPCODE_LD,
inst->Instruction.Saturate, offsets);
emit_dst_register(emit, get_tex_swizzle_dst(&swz_info));
emit_src_register(emit, &inst->Src[0]);
emit_resource_register(emit, unit);
end_emit_instruction(emit);
}
end_tex_swizzle(emit, &swz_info);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_TXL (explicit LOD) or TGSI_OPCODE_TXB (LOD bias)
* or TGSI_OPCODE_TXB2 (for cube shadow maps).
*/
static boolean
emit_txl_txb(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
const enum tgsi_texture_type target = inst->Texture.Texture;
unsigned opcode, unit;
int offsets[3];
struct tgsi_full_src_register coord, lod_bias;
struct tex_swizzle_info swz_info;
assert(inst->Instruction.Opcode == TGSI_OPCODE_TXL ||
inst->Instruction.Opcode == TGSI_OPCODE_TXB ||
inst->Instruction.Opcode == TGSI_OPCODE_TXB2);
if (inst->Instruction.Opcode == TGSI_OPCODE_TXB2) {
lod_bias = scalar_src(&inst->Src[1], TGSI_SWIZZLE_X);
unit = inst->Src[2].Register.Index;
}
else {
lod_bias = scalar_src(&inst->Src[0], TGSI_SWIZZLE_W);
unit = inst->Src[1].Register.Index;
}
begin_tex_swizzle(emit, unit, inst, tgsi_is_shadow_target(target),
&swz_info);
get_texel_offsets(emit, inst, offsets);
coord = setup_texcoord(emit, unit, &inst->Src[0]);
/* SAMPLE_L/B dst, coord(s0), resource, sampler, lod(s3) */
begin_emit_instruction(emit);
if (inst->Instruction.Opcode == TGSI_OPCODE_TXL) {
opcode = VGPU10_OPCODE_SAMPLE_L;
}
else {
opcode = VGPU10_OPCODE_SAMPLE_B;
}
emit_sample_opcode(emit, opcode, inst->Instruction.Saturate, offsets);
emit_dst_register(emit, get_tex_swizzle_dst(&swz_info));
emit_src_register(emit, &coord);
emit_resource_register(emit, unit);
emit_sampler_register(emit, unit);
emit_src_register(emit, &lod_bias);
end_emit_instruction(emit);
end_tex_swizzle(emit, &swz_info);
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit code for TGSI_OPCODE_TXQ (texture query) instruction.
*/
static boolean
emit_txq(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
const uint unit = inst->Src[1].Register.Index;
if (emit->sampler_target[unit] == TGSI_TEXTURE_BUFFER) {
/* RESINFO does not support querying texture buffers, so we instead
* store texture buffer sizes in shader constants, then copy them to
* implement TXQ instead of emitting RESINFO.
* MOV dst, const[texture_buffer_size_index[unit]]
*/
struct tgsi_full_src_register size_src =
make_src_const_reg(emit->texture_buffer_size_index[unit]);
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &inst->Dst[0], &size_src,
FALSE);
} else {
/* RESINFO dst, srcMipLevel, resource */
begin_emit_instruction(emit);
emit_opcode_resinfo(emit, VGPU10_RESINFO_RETURN_UINT);
emit_dst_register(emit, &inst->Dst[0]);
emit_src_register(emit, &inst->Src[0]);
emit_resource_register(emit, unit);
end_emit_instruction(emit);
}
free_temp_indexes(emit);
return TRUE;
}
/**
* Emit a simple instruction (like ADD, MUL, MIN, etc).
*/
static boolean
emit_simple(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
const unsigned opcode = inst->Instruction.Opcode;
const struct tgsi_opcode_info *op = tgsi_get_opcode_info(opcode);
unsigned i;
begin_emit_instruction(emit);
emit_opcode(emit, translate_opcode(inst->Instruction.Opcode),
inst->Instruction.Saturate);
for (i = 0; i < op->num_dst; i++) {
emit_dst_register(emit, &inst->Dst[i]);
}
for (i = 0; i < op->num_src; i++) {
emit_src_register(emit, &inst->Src[i]);
}
end_emit_instruction(emit);
return TRUE;
}
/**
* We only special case the MOV instruction to try to detect constant
* color writes in the fragment shader.
*/
static boolean
emit_mov(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
const struct tgsi_full_src_register *src = &inst->Src[0];
const struct tgsi_full_dst_register *dst = &inst->Dst[0];
if (emit->unit == PIPE_SHADER_FRAGMENT &&
dst->Register.File == TGSI_FILE_OUTPUT &&
dst->Register.Index == 0 &&
src->Register.File == TGSI_FILE_CONSTANT &&
!src->Register.Indirect) {
emit->constant_color_output = TRUE;
}
return emit_simple(emit, inst);
}
/**
* Emit a simple VGPU10 instruction which writes to multiple dest registers,
* where TGSI only uses one dest register.
*/
static boolean
emit_simple_1dst(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst,
unsigned dst_count,
unsigned dst_index)
{
const unsigned opcode = inst->Instruction.Opcode;
const struct tgsi_opcode_info *op = tgsi_get_opcode_info(opcode);
unsigned i;
begin_emit_instruction(emit);
emit_opcode(emit, translate_opcode(inst->Instruction.Opcode),
inst->Instruction.Saturate);
for (i = 0; i < dst_count; i++) {
if (i == dst_index) {
emit_dst_register(emit, &inst->Dst[0]);
} else {
emit_null_dst_register(emit);
}
}
for (i = 0; i < op->num_src; i++) {
emit_src_register(emit, &inst->Src[i]);
}
end_emit_instruction(emit);
return TRUE;
}
/**
* Translate a single TGSI instruction to VGPU10.
*/
static boolean
emit_vgpu10_instruction(struct svga_shader_emitter_v10 *emit,
unsigned inst_number,
const struct tgsi_full_instruction *inst)
{
const unsigned opcode = inst->Instruction.Opcode;
switch (opcode) {
case TGSI_OPCODE_ADD:
case TGSI_OPCODE_AND:
case TGSI_OPCODE_BGNLOOP:
case TGSI_OPCODE_BRK:
case TGSI_OPCODE_CEIL:
case TGSI_OPCODE_CONT:
case TGSI_OPCODE_DDX:
case TGSI_OPCODE_DDY:
case TGSI_OPCODE_DIV:
case TGSI_OPCODE_DP2:
case TGSI_OPCODE_DP3:
case TGSI_OPCODE_DP4:
case TGSI_OPCODE_ELSE:
case TGSI_OPCODE_ENDIF:
case TGSI_OPCODE_ENDLOOP:
case TGSI_OPCODE_ENDSUB:
case TGSI_OPCODE_F2I:
case TGSI_OPCODE_F2U:
case TGSI_OPCODE_FLR:
case TGSI_OPCODE_FRC:
case TGSI_OPCODE_FSEQ:
case TGSI_OPCODE_FSGE:
case TGSI_OPCODE_FSLT:
case TGSI_OPCODE_FSNE:
case TGSI_OPCODE_I2F:
case TGSI_OPCODE_IMAX:
case TGSI_OPCODE_IMIN:
case TGSI_OPCODE_INEG:
case TGSI_OPCODE_ISGE:
case TGSI_OPCODE_ISHR:
case TGSI_OPCODE_ISLT:
case TGSI_OPCODE_MAD:
case TGSI_OPCODE_MAX:
case TGSI_OPCODE_MIN:
case TGSI_OPCODE_MUL:
case TGSI_OPCODE_NOP:
case TGSI_OPCODE_NOT:
case TGSI_OPCODE_OR:
case TGSI_OPCODE_RET:
case TGSI_OPCODE_UADD:
case TGSI_OPCODE_USEQ:
case TGSI_OPCODE_USGE:
case TGSI_OPCODE_USLT:
case TGSI_OPCODE_UMIN:
case TGSI_OPCODE_UMAD:
case TGSI_OPCODE_UMAX:
case TGSI_OPCODE_ROUND:
case TGSI_OPCODE_SQRT:
case TGSI_OPCODE_SHL:
case TGSI_OPCODE_TRUNC:
case TGSI_OPCODE_U2F:
case TGSI_OPCODE_UCMP:
case TGSI_OPCODE_USHR:
case TGSI_OPCODE_USNE:
case TGSI_OPCODE_XOR:
/* simple instructions */
return emit_simple(emit, inst);
case TGSI_OPCODE_MOV:
return emit_mov(emit, inst);
case TGSI_OPCODE_EMIT:
return emit_vertex(emit, inst);
case TGSI_OPCODE_ENDPRIM:
return emit_endprim(emit, inst);
case TGSI_OPCODE_IABS:
return emit_iabs(emit, inst);
case TGSI_OPCODE_ARL:
/* fall-through */
case TGSI_OPCODE_UARL:
return emit_arl_uarl(emit, inst);
case TGSI_OPCODE_BGNSUB:
/* no-op */
return TRUE;
case TGSI_OPCODE_CAL:
return emit_cal(emit, inst);
case TGSI_OPCODE_CMP:
return emit_cmp(emit, inst);
case TGSI_OPCODE_COS:
return emit_sincos(emit, inst);
case TGSI_OPCODE_DST:
return emit_dst(emit, inst);
case TGSI_OPCODE_EX2:
return emit_ex2(emit, inst);
case TGSI_OPCODE_EXP:
return emit_exp(emit, inst);
case TGSI_OPCODE_IF:
return emit_if(emit, inst);
case TGSI_OPCODE_KILL:
return emit_kill(emit, inst);
case TGSI_OPCODE_KILL_IF:
return emit_kill_if(emit, inst);
case TGSI_OPCODE_LG2:
return emit_lg2(emit, inst);
case TGSI_OPCODE_LIT:
return emit_lit(emit, inst);
case TGSI_OPCODE_LOG:
return emit_log(emit, inst);
case TGSI_OPCODE_LRP:
return emit_lrp(emit, inst);
case TGSI_OPCODE_POW:
return emit_pow(emit, inst);
case TGSI_OPCODE_RCP:
return emit_rcp(emit, inst);
case TGSI_OPCODE_RSQ:
return emit_rsq(emit, inst);
case TGSI_OPCODE_SAMPLE:
return emit_sample(emit, inst);
case TGSI_OPCODE_SEQ:
return emit_seq(emit, inst);
case TGSI_OPCODE_SGE:
return emit_sge(emit, inst);
case TGSI_OPCODE_SGT:
return emit_sgt(emit, inst);
case TGSI_OPCODE_SIN:
return emit_sincos(emit, inst);
case TGSI_OPCODE_SLE:
return emit_sle(emit, inst);
case TGSI_OPCODE_SLT:
return emit_slt(emit, inst);
case TGSI_OPCODE_SNE:
return emit_sne(emit, inst);
case TGSI_OPCODE_SSG:
return emit_ssg(emit, inst);
case TGSI_OPCODE_ISSG:
return emit_issg(emit, inst);
case TGSI_OPCODE_TEX:
return emit_tex(emit, inst);
case TGSI_OPCODE_TXP:
return emit_txp(emit, inst);
case TGSI_OPCODE_TXB:
case TGSI_OPCODE_TXB2:
case TGSI_OPCODE_TXL:
return emit_txl_txb(emit, inst);
case TGSI_OPCODE_TXD:
return emit_txd(emit, inst);
case TGSI_OPCODE_TXF:
return emit_txf(emit, inst);
case TGSI_OPCODE_TXQ:
return emit_txq(emit, inst);
case TGSI_OPCODE_UIF:
return emit_if(emit, inst);
case TGSI_OPCODE_UMUL_HI:
case TGSI_OPCODE_IMUL_HI:
case TGSI_OPCODE_UDIV:
case TGSI_OPCODE_IDIV:
/* These cases use only the FIRST of two destination registers */
return emit_simple_1dst(emit, inst, 2, 0);
case TGSI_OPCODE_UMUL:
case TGSI_OPCODE_UMOD:
case TGSI_OPCODE_MOD:
/* These cases use only the SECOND of two destination registers */
return emit_simple_1dst(emit, inst, 2, 1);
case TGSI_OPCODE_END:
if (!emit_post_helpers(emit))
return FALSE;
return emit_simple(emit, inst);
default:
debug_printf("Unimplemented tgsi instruction %s\n",
tgsi_get_opcode_name(opcode));
return FALSE;
}
return TRUE;
}
/**
* Emit the extra instructions to adjust the vertex position.
* There are two possible adjustments:
* 1. Converting from Gallium to VGPU10 coordinate space by applying the
* "prescale" and "pretranslate" values.
* 2. Undoing the viewport transformation when we use the swtnl/draw path.
* \param vs_pos_tmp_index which temporary register contains the vertex pos.
*/
static void
emit_vpos_instructions(struct svga_shader_emitter_v10 *emit,
unsigned vs_pos_tmp_index)
{
struct tgsi_full_src_register tmp_pos_src;
struct tgsi_full_dst_register pos_dst;
/* Don't bother to emit any extra vertex instructions if vertex position is
* not written out
*/
if (emit->vposition.out_index == INVALID_INDEX)
return;
tmp_pos_src = make_src_temp_reg(vs_pos_tmp_index);
pos_dst = make_dst_output_reg(emit->vposition.out_index);
/* If non-adjusted vertex position register index
* is valid, copy the vertex position from the temporary
* vertex position register before it is modified by the
* prescale computation.
*/
if (emit->vposition.so_index != INVALID_INDEX) {
struct tgsi_full_dst_register pos_so_dst =
make_dst_output_reg(emit->vposition.so_index);
/* MOV pos_so, tmp_pos */
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &pos_so_dst,
&tmp_pos_src, FALSE);
}
if (emit->vposition.need_prescale) {
/* This code adjusts the vertex position to match the VGPU10 convention.
* If p is the position computed by the shader (usually by applying the
* modelview and projection matrices), the new position q is computed by:
*
* q.x = p.w * trans.x + p.x * scale.x
* q.y = p.w * trans.y + p.y * scale.y
* q.z = p.w * trans.z + p.z * scale.z;
* q.w = p.w * trans.w + p.w;
*/
struct tgsi_full_src_register tmp_pos_src_w =
scalar_src(&tmp_pos_src, TGSI_SWIZZLE_W);
struct tgsi_full_dst_register tmp_pos_dst =
make_dst_temp_reg(vs_pos_tmp_index);
struct tgsi_full_dst_register tmp_pos_dst_xyz =
writemask_dst(&tmp_pos_dst, TGSI_WRITEMASK_XYZ);
struct tgsi_full_src_register prescale_scale =
make_src_const_reg(emit->vposition.prescale_scale_index);
struct tgsi_full_src_register prescale_trans =
make_src_const_reg(emit->vposition.prescale_trans_index);
/* MUL tmp_pos.xyz, tmp_pos, prescale.scale */
emit_instruction_op2(emit, VGPU10_OPCODE_MUL, &tmp_pos_dst_xyz,
&tmp_pos_src, &prescale_scale, FALSE);
/* MAD pos, tmp_pos.wwww, prescale.trans, tmp_pos */
emit_instruction_op3(emit, VGPU10_OPCODE_MAD, &pos_dst, &tmp_pos_src_w,
&prescale_trans, &tmp_pos_src, FALSE);
}
else if (emit->key.vs.undo_viewport) {
/* This code computes the final vertex position from the temporary
* vertex position by undoing the viewport transformation and the
* divide-by-W operation (we convert window coords back to clip coords).
* This is needed when we use the 'draw' module for fallbacks.
* If p is the temp pos in window coords, then the NDC coord q is:
* q.x = (p.x - vp.x_trans) / vp.x_scale * p.w
* q.y = (p.y - vp.y_trans) / vp.y_scale * p.w
* q.z = p.z * p.w
* q.w = p.w
* CONST[vs_viewport_index] contains:
* { 1/vp.x_scale, 1/vp.y_scale, -vp.x_trans, -vp.y_trans }
*/
struct tgsi_full_dst_register tmp_pos_dst =
make_dst_temp_reg(vs_pos_tmp_index);
struct tgsi_full_dst_register tmp_pos_dst_xy =
writemask_dst(&tmp_pos_dst, TGSI_WRITEMASK_XY);
struct tgsi_full_src_register tmp_pos_src_wwww =
scalar_src(&tmp_pos_src, TGSI_SWIZZLE_W);
struct tgsi_full_dst_register pos_dst_xyz =
writemask_dst(&pos_dst, TGSI_WRITEMASK_XYZ);
struct tgsi_full_dst_register pos_dst_w =
writemask_dst(&pos_dst, TGSI_WRITEMASK_W);
struct tgsi_full_src_register vp_xyzw =
make_src_const_reg(emit->vs.viewport_index);
struct tgsi_full_src_register vp_zwww =
swizzle_src(&vp_xyzw, TGSI_SWIZZLE_Z, TGSI_SWIZZLE_W,
TGSI_SWIZZLE_W, TGSI_SWIZZLE_W);
/* ADD tmp_pos.xy, tmp_pos.xy, viewport.zwww */
emit_instruction_op2(emit, VGPU10_OPCODE_ADD, &tmp_pos_dst_xy,
&tmp_pos_src, &vp_zwww, FALSE);
/* MUL tmp_pos.xy, tmp_pos.xyzw, viewport.xyzy */
emit_instruction_op2(emit, VGPU10_OPCODE_MUL, &tmp_pos_dst_xy,
&tmp_pos_src, &vp_xyzw, FALSE);
/* MUL pos.xyz, tmp_pos.xyz, tmp_pos.www */
emit_instruction_op2(emit, VGPU10_OPCODE_MUL, &pos_dst_xyz,
&tmp_pos_src, &tmp_pos_src_wwww, FALSE);
/* MOV pos.w, tmp_pos.w */
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &pos_dst_w,
&tmp_pos_src, FALSE);
}
else if (vs_pos_tmp_index != INVALID_INDEX) {
/* This code is to handle the case where the temporary vertex
* position register is created when the vertex shader has stream
* output and prescale is disabled because rasterization is to be
* discarded.
*/
struct tgsi_full_dst_register pos_dst =
make_dst_output_reg(emit->vposition.out_index);
/* MOV pos, tmp_pos */
begin_emit_instruction(emit);
emit_opcode(emit, VGPU10_OPCODE_MOV, FALSE);
emit_dst_register(emit, &pos_dst);
emit_src_register(emit, &tmp_pos_src);
end_emit_instruction(emit);
}
}
static void
emit_clipping_instructions(struct svga_shader_emitter_v10 *emit)
{
if (emit->clip_mode == CLIP_DISTANCE) {
/* Copy from copy distance temporary to CLIPDIST & the shadow copy */
emit_clip_distance_instructions(emit);
} else if (emit->clip_mode == CLIP_VERTEX) {
/* Convert TGSI CLIPVERTEX to CLIPDIST */
emit_clip_vertex_instructions(emit);
}
/**
* Emit vertex position and take care of legacy user planes only if
* there is a valid vertex position register index.
* This is to take care of the case
* where the shader doesn't output vertex position. Then in
* this case, don't bother to emit more vertex instructions.
*/
if (emit->vposition.out_index == INVALID_INDEX)
return;
/**
* Emit per-vertex clipping instructions for legacy user defined clip planes.
* NOTE: we must emit the clip distance instructions before the
* emit_vpos_instructions() call since the later function will change
* the TEMP[vs_pos_tmp_index] value.
*/
if (emit->clip_mode == CLIP_LEGACY) {
/* Emit CLIPDIST for legacy user defined clip planes */
emit_clip_distance_from_vpos(emit, emit->vposition.tmp_index);
}
}
/**
* Emit extra per-vertex instructions. This includes clip-coordinate
* space conversion and computing clip distances. This is called for
* each GS emit-vertex instruction and at the end of VS translation.
*/
static void
emit_vertex_instructions(struct svga_shader_emitter_v10 *emit)
{
const unsigned vs_pos_tmp_index = emit->vposition.tmp_index;
/* Emit clipping instructions based on clipping mode */
emit_clipping_instructions(emit);
/**
* Reset the temporary vertex position register index
* so that emit_dst_register() will use the real vertex position output
*/
emit->vposition.tmp_index = INVALID_INDEX;
/* Emit vertex position instructions */
emit_vpos_instructions(emit, vs_pos_tmp_index);
/* Restore original vposition.tmp_index value for the next GS vertex.
* It doesn't matter for VS.
*/
emit->vposition.tmp_index = vs_pos_tmp_index;
}
/**
* Translate the TGSI_OPCODE_EMIT GS instruction.
*/
static boolean
emit_vertex(struct svga_shader_emitter_v10 *emit,
const struct tgsi_full_instruction *inst)
{
unsigned ret = TRUE;
assert(emit->unit == PIPE_SHADER_GEOMETRY);
emit_vertex_instructions(emit);
/* We can't use emit_simple() because the TGSI instruction has one
* operand (vertex stream number) which we must ignore for VGPU10.
*/
begin_emit_instruction(emit);
emit_opcode(emit, VGPU10_OPCODE_EMIT, FALSE);
end_emit_instruction(emit);
return ret;
}
/**
* Emit the extra code to convert from VGPU10's boolean front-face
* register to TGSI's signed front-face register.
*
* TODO: Make temporary front-face register a scalar.
*/
static void
emit_frontface_instructions(struct svga_shader_emitter_v10 *emit)
{
assert(emit->unit == PIPE_SHADER_FRAGMENT);
if (emit->fs.face_input_index != INVALID_INDEX) {
/* convert vgpu10 boolean face register to gallium +/-1 value */
struct tgsi_full_dst_register tmp_dst =
make_dst_temp_reg(emit->fs.face_tmp_index);
struct tgsi_full_src_register one =
make_immediate_reg_float(emit, 1.0f);
struct tgsi_full_src_register neg_one =
make_immediate_reg_float(emit, -1.0f);
/* MOVC face_tmp, IS_FRONT_FACE.x, 1.0, -1.0 */
begin_emit_instruction(emit);
emit_opcode(emit, VGPU10_OPCODE_MOVC, FALSE);
emit_dst_register(emit, &tmp_dst);
emit_face_register(emit);
emit_src_register(emit, &one);
emit_src_register(emit, &neg_one);
end_emit_instruction(emit);
}
}
/**
* Emit the extra code to convert from VGPU10's fragcoord.w value to 1/w.
*/
static void
emit_fragcoord_instructions(struct svga_shader_emitter_v10 *emit)
{
assert(emit->unit == PIPE_SHADER_FRAGMENT);
if (emit->fs.fragcoord_input_index != INVALID_INDEX) {
struct tgsi_full_dst_register tmp_dst =
make_dst_temp_reg(emit->fs.fragcoord_tmp_index);
struct tgsi_full_dst_register tmp_dst_xyz =
writemask_dst(&tmp_dst, TGSI_WRITEMASK_XYZ);
struct tgsi_full_dst_register tmp_dst_w =
writemask_dst(&tmp_dst, TGSI_WRITEMASK_W);
struct tgsi_full_src_register one =
make_immediate_reg_float(emit, 1.0f);
struct tgsi_full_src_register fragcoord =
make_src_reg(TGSI_FILE_INPUT, emit->fs.fragcoord_input_index);
/* save the input index */
unsigned fragcoord_input_index = emit->fs.fragcoord_input_index;
/* set to invalid to prevent substitution in emit_src_register() */
emit->fs.fragcoord_input_index = INVALID_INDEX;
/* MOV fragcoord_tmp.xyz, fragcoord.xyz */
begin_emit_instruction(emit);
emit_opcode(emit, VGPU10_OPCODE_MOV, FALSE);
emit_dst_register(emit, &tmp_dst_xyz);
emit_src_register(emit, &fragcoord);
end_emit_instruction(emit);
/* DIV fragcoord_tmp.w, 1.0, fragcoord.w */
begin_emit_instruction(emit);
emit_opcode(emit, VGPU10_OPCODE_DIV, FALSE);
emit_dst_register(emit, &tmp_dst_w);
emit_src_register(emit, &one);
emit_src_register(emit, &fragcoord);
end_emit_instruction(emit);
/* restore saved value */
emit->fs.fragcoord_input_index = fragcoord_input_index;
}
}
/**
* Emit extra instructions to adjust VS inputs/attributes. This can
* mean casting a vertex attribute from int to float or setting the
* W component to 1, or both.
*/
static void
emit_vertex_attrib_instructions(struct svga_shader_emitter_v10 *emit)
{
const unsigned save_w_1_mask = emit->key.vs.adjust_attrib_w_1;
const unsigned save_itof_mask = emit->key.vs.adjust_attrib_itof;
const unsigned save_utof_mask = emit->key.vs.adjust_attrib_utof;
const unsigned save_is_bgra_mask = emit->key.vs.attrib_is_bgra;
const unsigned save_puint_to_snorm_mask = emit->key.vs.attrib_puint_to_snorm;
const unsigned save_puint_to_uscaled_mask = emit->key.vs.attrib_puint_to_uscaled;
const unsigned save_puint_to_sscaled_mask = emit->key.vs.attrib_puint_to_sscaled;
unsigned adjust_mask = (save_w_1_mask |
save_itof_mask |
save_utof_mask |
save_is_bgra_mask |
save_puint_to_snorm_mask |
save_puint_to_uscaled_mask |
save_puint_to_sscaled_mask);
assert(emit->unit == PIPE_SHADER_VERTEX);
if (adjust_mask) {
struct tgsi_full_src_register one =
make_immediate_reg_float(emit, 1.0f);
struct tgsi_full_src_register one_int =
make_immediate_reg_int(emit, 1);
/* We need to turn off these bitmasks while emitting the
* instructions below, then restore them afterward.
*/
emit->key.vs.adjust_attrib_w_1 = 0;
emit->key.vs.adjust_attrib_itof = 0;
emit->key.vs.adjust_attrib_utof = 0;
emit->key.vs.attrib_is_bgra = 0;
emit->key.vs.attrib_puint_to_snorm = 0;
emit->key.vs.attrib_puint_to_uscaled = 0;
emit->key.vs.attrib_puint_to_sscaled = 0;
while (adjust_mask) {
unsigned index = u_bit_scan(&adjust_mask);
/* skip the instruction if this vertex attribute is not being used */
if (emit->info.input_usage_mask[index] == 0)
continue;
unsigned tmp = emit->vs.adjusted_input[index];
struct tgsi_full_src_register input_src =
make_src_reg(TGSI_FILE_INPUT, index);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
struct tgsi_full_dst_register tmp_dst_w =
writemask_dst(&tmp_dst, TGSI_WRITEMASK_W);
/* ITOF/UTOF/MOV tmp, input[index] */
if (save_itof_mask & (1 << index)) {
emit_instruction_op1(emit, VGPU10_OPCODE_ITOF,
&tmp_dst, &input_src, FALSE);
}
else if (save_utof_mask & (1 << index)) {
emit_instruction_op1(emit, VGPU10_OPCODE_UTOF,
&tmp_dst, &input_src, FALSE);
}
else if (save_puint_to_snorm_mask & (1 << index)) {
emit_puint_to_snorm(emit, &tmp_dst, &input_src);
}
else if (save_puint_to_uscaled_mask & (1 << index)) {
emit_puint_to_uscaled(emit, &tmp_dst, &input_src);
}
else if (save_puint_to_sscaled_mask & (1 << index)) {
emit_puint_to_sscaled(emit, &tmp_dst, &input_src);
}
else {
assert((save_w_1_mask | save_is_bgra_mask) & (1 << index));
emit_instruction_op1(emit, VGPU10_OPCODE_MOV,
&tmp_dst, &input_src, FALSE);
}
if (save_is_bgra_mask & (1 << index)) {
emit_swap_r_b(emit, &tmp_dst, &tmp_src);
}
if (save_w_1_mask & (1 << index)) {
/* MOV tmp.w, 1.0 */
if (emit->key.vs.attrib_is_pure_int & (1 << index)) {
emit_instruction_op1(emit, VGPU10_OPCODE_MOV,
&tmp_dst_w, &one_int, FALSE);
}
else {
emit_instruction_op1(emit, VGPU10_OPCODE_MOV,
&tmp_dst_w, &one, FALSE);
}
}
}
emit->key.vs.adjust_attrib_w_1 = save_w_1_mask;
emit->key.vs.adjust_attrib_itof = save_itof_mask;
emit->key.vs.adjust_attrib_utof = save_utof_mask;
emit->key.vs.attrib_is_bgra = save_is_bgra_mask;
emit->key.vs.attrib_puint_to_snorm = save_puint_to_snorm_mask;
emit->key.vs.attrib_puint_to_uscaled = save_puint_to_uscaled_mask;
emit->key.vs.attrib_puint_to_sscaled = save_puint_to_sscaled_mask;
}
}
/**
* Some common values like 0.0, 1.0, 0.5, etc. are frequently needed
* to implement some instructions. We pre-allocate those values here
* in the immediate constant buffer.
*/
static void
alloc_common_immediates(struct svga_shader_emitter_v10 *emit)
{
unsigned n = 0;
emit->common_immediate_pos[n++] =
alloc_immediate_float4(emit, 0.0f, 1.0f, 0.5f, -1.0f);
if (emit->info.opcode_count[TGSI_OPCODE_LIT] > 0) {
emit->common_immediate_pos[n++] =
alloc_immediate_float4(emit, 128.0f, -128.0f, 0.0f, 0.0f);
}
emit->common_immediate_pos[n++] =
alloc_immediate_int4(emit, 0, 1, 0, -1);
if (emit->key.vs.attrib_puint_to_snorm) {
emit->common_immediate_pos[n++] =
alloc_immediate_float4(emit, -2.0f, 2.0f, 3.0f, -1.66666f);
}
if (emit->key.vs.attrib_puint_to_uscaled) {
emit->common_immediate_pos[n++] =
alloc_immediate_float4(emit, 1023.0f, 3.0f, 0.0f, 0.0f);
}
if (emit->key.vs.attrib_puint_to_sscaled) {
emit->common_immediate_pos[n++] =
alloc_immediate_int4(emit, 22, 12, 2, 0);
emit->common_immediate_pos[n++] =
alloc_immediate_int4(emit, 22, 30, 0, 0);
}
unsigned i;
for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
if (emit->key.tex[i].texel_bias) {
/* Replace 0.0f if more immediate float value is needed */
emit->common_immediate_pos[n++] =
alloc_immediate_float4(emit, 0.0001f, 0.0f, 0.0f, 0.0f);
break;
}
}
assert(n <= ARRAY_SIZE(emit->common_immediate_pos));
emit->num_common_immediates = n;
}
/**
* Emit any extra/helper declarations/code that we might need between
* the declaration section and code section.
*/
static boolean
emit_pre_helpers(struct svga_shader_emitter_v10 *emit)
{
/* Properties */
if (emit->unit == PIPE_SHADER_GEOMETRY)
emit_property_instructions(emit);
/* Declare inputs */
if (!emit_input_declarations(emit))
return FALSE;
/* Declare outputs */
if (!emit_output_declarations(emit))
return FALSE;
/* Declare temporary registers */
emit_temporaries_declaration(emit);
/* Declare constant registers */
emit_constant_declaration(emit);
/* Declare samplers and resources */
emit_sampler_declarations(emit);
emit_resource_declarations(emit);
/* Declare clip distance output registers */
if (emit->unit == PIPE_SHADER_VERTEX ||
emit->unit == PIPE_SHADER_GEOMETRY) {
emit_clip_distance_declarations(emit);
}
alloc_common_immediates(emit);
if (emit->unit == PIPE_SHADER_FRAGMENT &&
emit->key.fs.alpha_func != SVGA3D_CMP_ALWAYS) {
float alpha = emit->key.fs.alpha_ref;
emit->fs.alpha_ref_index =
alloc_immediate_float4(emit, alpha, alpha, alpha, alpha);
}
/* Now, emit the constant block containing all the immediates
* declared by shader, as well as the extra ones seen above.
*/
emit_vgpu10_immediates_block(emit);
if (emit->unit == PIPE_SHADER_FRAGMENT) {
emit_frontface_instructions(emit);
emit_fragcoord_instructions(emit);
}
else if (emit->unit == PIPE_SHADER_VERTEX) {
emit_vertex_attrib_instructions(emit);
}
return TRUE;
}
/**
* The device has no direct support for the pipe_blend_state::alpha_to_one
* option so we implement it here with shader code.
*
* Note that this is kind of pointless, actually. Here we're clobbering
* the alpha value with 1.0. So if alpha-to-coverage is enabled, we'll wind
* up with 100% coverage. That's almost certainly not what the user wants.
* The work-around is to add extra shader code to compute coverage from alpha
* and write it to the coverage output register (if the user's shader doesn't
* do so already). We'll probably do that in the future.
*/
static void
emit_alpha_to_one_instructions(struct svga_shader_emitter_v10 *emit,
unsigned fs_color_tmp_index)
{
struct tgsi_full_src_register one = make_immediate_reg_float(emit, 1.0f);
unsigned i;
/* Note: it's not 100% clear from the spec if we're supposed to clobber
* the alpha for all render targets. But that's what NVIDIA does and
* that's what Piglit tests.
*/
for (i = 0; i < emit->fs.num_color_outputs; i++) {
struct tgsi_full_dst_register color_dst;
if (fs_color_tmp_index != INVALID_INDEX && i == 0) {
/* write to the temp color register */
color_dst = make_dst_temp_reg(fs_color_tmp_index);
}
else {
/* write directly to the color[i] output */
color_dst = make_dst_output_reg(emit->fs.color_out_index[i]);
}
color_dst = writemask_dst(&color_dst, TGSI_WRITEMASK_W);
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &color_dst, &one, FALSE);
}
}
/**
* Emit alpha test code. This compares TEMP[fs_color_tmp_index].w
* against the alpha reference value and discards the fragment if the
* comparison fails.
*/
static void
emit_alpha_test_instructions(struct svga_shader_emitter_v10 *emit,
unsigned fs_color_tmp_index)
{
/* compare output color's alpha to alpha ref and kill */
unsigned tmp = get_temp_index(emit);
struct tgsi_full_src_register tmp_src = make_src_temp_reg(tmp);
struct tgsi_full_src_register tmp_src_x =
scalar_src(&tmp_src, TGSI_SWIZZLE_X);
struct tgsi_full_dst_register tmp_dst = make_dst_temp_reg(tmp);
struct tgsi_full_src_register color_src =
make_src_temp_reg(fs_color_tmp_index);
struct tgsi_full_src_register color_src_w =
scalar_src(&color_src, TGSI_SWIZZLE_W);
struct tgsi_full_src_register ref_src =
make_src_immediate_reg(emit->fs.alpha_ref_index);
struct tgsi_full_dst_register color_dst =
make_dst_output_reg(emit->fs.color_out_index[0]);
assert(emit->unit == PIPE_SHADER_FRAGMENT);
/* dst = src0 'alpha_func' src1 */
emit_comparison(emit, emit->key.fs.alpha_func, &tmp_dst,
&color_src_w, &ref_src);
/* DISCARD if dst.x == 0 */
begin_emit_instruction(emit);
emit_discard_opcode(emit, FALSE); /* discard if src0.x is zero */
emit_src_register(emit, &tmp_src_x);
end_emit_instruction(emit);
/* If we don't need to broadcast the color below, emit the final color here.
*/
if (emit->key.fs.write_color0_to_n_cbufs <= 1) {
/* MOV output.color, tempcolor */
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &color_dst,
&color_src, FALSE); /* XXX saturate? */
}
free_temp_indexes(emit);
}
/**
* Emit instructions for writing a single color output to multiple
* color buffers.
* This is used when the TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS (or
* when key.fs.white_fragments is true).
* property is set and the number of render targets is greater than one.
* \param fs_color_tmp_index index of the temp register that holds the
* color to broadcast.
*/
static void
emit_broadcast_color_instructions(struct svga_shader_emitter_v10 *emit,
unsigned fs_color_tmp_index)
{
const unsigned n = emit->key.fs.write_color0_to_n_cbufs;
unsigned i;
struct tgsi_full_src_register color_src;
if (emit->key.fs.white_fragments) {
/* set all color outputs to white */
color_src = make_immediate_reg_float(emit, 1.0f);
}
else {
/* set all color outputs to TEMP[fs_color_tmp_index] */
assert(fs_color_tmp_index != INVALID_INDEX);
color_src = make_src_temp_reg(fs_color_tmp_index);
}
assert(emit->unit == PIPE_SHADER_FRAGMENT);
for (i = 0; i < n; i++) {
unsigned output_reg = emit->fs.color_out_index[i];
struct tgsi_full_dst_register color_dst =
make_dst_output_reg(output_reg);
/* Fill in this semantic here since we'll use it later in
* emit_dst_register().
*/
emit->info.output_semantic_name[output_reg] = TGSI_SEMANTIC_COLOR;
/* MOV output.color[i], tempcolor */
emit_instruction_op1(emit, VGPU10_OPCODE_MOV, &color_dst,
&color_src, FALSE); /* XXX saturate? */
}
}
/**
* Emit extra helper code after the original shader code, but before the
* last END/RET instruction.
* For vertex shaders this means emitting the extra code to apply the
* prescale scale/translation.
*/
static boolean
emit_post_helpers(struct svga_shader_emitter_v10 *emit)
{
if (emit->unit == PIPE_SHADER_VERTEX) {
emit_vertex_instructions(emit);
}
else if (emit->unit == PIPE_SHADER_FRAGMENT) {
const unsigned fs_color_tmp_index = emit->fs.color_tmp_index;
assert(!(emit->key.fs.white_fragments &&
emit->key.fs.write_color0_to_n_cbufs == 0));
/* We no longer want emit_dst_register() to substitute the
* temporary fragment color register for the real color output.
*/
emit->fs.color_tmp_index = INVALID_INDEX;
if (emit->key.fs.alpha_to_one) {
emit_alpha_to_one_instructions(emit, fs_color_tmp_index);
}
if (emit->key.fs.alpha_func != SVGA3D_CMP_ALWAYS) {
emit_alpha_test_instructions(emit, fs_color_tmp_index);
}
if (emit->key.fs.write_color0_to_n_cbufs > 1 ||
emit->key.fs.white_fragments) {
emit_broadcast_color_instructions(emit, fs_color_tmp_index);
}
}
return TRUE;
}
/**
* Translate the TGSI tokens into VGPU10 tokens.
*/
static boolean
emit_vgpu10_instructions(struct svga_shader_emitter_v10 *emit,
const struct tgsi_token *tokens)
{
struct tgsi_parse_context parse;
boolean ret = TRUE;
boolean pre_helpers_emitted = FALSE;
unsigned inst_number = 0;
tgsi_parse_init(&parse, tokens);
while (!tgsi_parse_end_of_tokens(&parse)) {
tgsi_parse_token(&parse);
switch (parse.FullToken.Token.Type) {
case TGSI_TOKEN_TYPE_IMMEDIATE:
ret = emit_vgpu10_immediate(emit, &parse.FullToken.FullImmediate);
if (!ret)
goto done;
break;
case TGSI_TOKEN_TYPE_DECLARATION:
ret = emit_vgpu10_declaration(emit, &parse.FullToken.FullDeclaration);
if (!ret)
goto done;
break;
case TGSI_TOKEN_TYPE_INSTRUCTION:
if (!pre_helpers_emitted) {
ret = emit_pre_helpers(emit);
if (!ret)
goto done;
pre_helpers_emitted = TRUE;
}
ret = emit_vgpu10_instruction(emit, inst_number++,
&parse.FullToken.FullInstruction);
if (!ret)
goto done;
break;
case TGSI_TOKEN_TYPE_PROPERTY:
ret = emit_vgpu10_property(emit, &parse.FullToken.FullProperty);
if (!ret)
goto done;
break;
default:
break;
}
}
done:
tgsi_parse_free(&parse);
return ret;
}
/**
* Emit the first VGPU10 shader tokens.
*/
static boolean
emit_vgpu10_header(struct svga_shader_emitter_v10 *emit)
{
VGPU10ProgramToken ptoken;
/* First token: VGPU10ProgramToken (version info, program type (VS,GS,PS)) */
ptoken.majorVersion = 4;
ptoken.minorVersion = 0;
ptoken.programType = translate_shader_type(emit->unit);
if (!emit_dword(emit, ptoken.value))
return FALSE;
/* Second token: total length of shader, in tokens. We can't fill this
* in until we're all done. Emit zero for now.
*/
return emit_dword(emit, 0);
}
static boolean
emit_vgpu10_tail(struct svga_shader_emitter_v10 *emit)
{
VGPU10ProgramToken *tokens;
/* Replace the second token with total shader length */
tokens = (VGPU10ProgramToken *) emit->buf;
tokens[1].value = emit_get_num_tokens(emit);
return TRUE;
}
/**
* Modify the FS to read the BCOLORs and use the FACE register
* to choose between the front/back colors.
*/
static const struct tgsi_token *
transform_fs_twoside(const struct tgsi_token *tokens)
{
if (0) {
debug_printf("Before tgsi_add_two_side ------------------\n");
tgsi_dump(tokens,0);
}
tokens = tgsi_add_two_side(tokens);
if (0) {
debug_printf("After tgsi_add_two_side ------------------\n");
tgsi_dump(tokens, 0);
}
return tokens;
}
/**
* Modify the FS to do polygon stipple.
*/
static const struct tgsi_token *
transform_fs_pstipple(struct svga_shader_emitter_v10 *emit,
const struct tgsi_token *tokens)
{
const struct tgsi_token *new_tokens;
unsigned unit;
if (0) {
debug_printf("Before pstipple ------------------\n");
tgsi_dump(tokens,0);
}
new_tokens = util_pstipple_create_fragment_shader(tokens, &unit, 0,
TGSI_FILE_INPUT);
emit->fs.pstipple_sampler_unit = unit;
/* Setup texture state for stipple */
emit->sampler_target[unit] = TGSI_TEXTURE_2D;
emit->key.tex[unit].swizzle_r = TGSI_SWIZZLE_X;
emit->key.tex[unit].swizzle_g = TGSI_SWIZZLE_Y;
emit->key.tex[unit].swizzle_b = TGSI_SWIZZLE_Z;
emit->key.tex[unit].swizzle_a = TGSI_SWIZZLE_W;
if (0) {
debug_printf("After pstipple ------------------\n");
tgsi_dump(new_tokens, 0);
}
return new_tokens;
}
/**
* Modify the FS to support anti-aliasing point.
*/
static const struct tgsi_token *
transform_fs_aapoint(const struct tgsi_token *tokens,
int aa_coord_index)
{
if (0) {
debug_printf("Before tgsi_add_aa_point ------------------\n");
tgsi_dump(tokens,0);
}
tokens = tgsi_add_aa_point(tokens, aa_coord_index);
if (0) {
debug_printf("After tgsi_add_aa_point ------------------\n");
tgsi_dump(tokens, 0);
}
return tokens;
}
/**
* This is the main entrypoint for the TGSI -> VPGU10 translator.
*/
struct svga_shader_variant *
svga_tgsi_vgpu10_translate(struct svga_context *svga,
const struct svga_shader *shader,
const struct svga_compile_key *key,
unsigned unit)
{
struct svga_shader_variant *variant = NULL;
struct svga_shader_emitter_v10 *emit;
const struct tgsi_token *tokens = shader->tokens;
struct svga_vertex_shader *vs = svga->curr.vs;
struct svga_geometry_shader *gs = svga->curr.gs;
assert(unit == PIPE_SHADER_VERTEX ||
unit == PIPE_SHADER_GEOMETRY ||
unit == PIPE_SHADER_FRAGMENT);
/* These two flags cannot be used together */
assert(key->vs.need_prescale + key->vs.undo_viewport <= 1);
SVGA_STATS_TIME_PUSH(svga_sws(svga), SVGA_STATS_TIME_TGSIVGPU10TRANSLATE);
/*
* Setup the code emitter
*/
emit = alloc_emitter();
if (!emit)
goto done;
emit->unit = unit;
emit->key = *key;
emit->vposition.need_prescale = (emit->key.vs.need_prescale ||
emit->key.gs.need_prescale);
emit->vposition.tmp_index = INVALID_INDEX;
emit->vposition.so_index = INVALID_INDEX;
emit->vposition.out_index = INVALID_INDEX;
emit->fs.color_tmp_index = INVALID_INDEX;
emit->fs.face_input_index = INVALID_INDEX;
emit->fs.fragcoord_input_index = INVALID_INDEX;
emit->gs.prim_id_index = INVALID_INDEX;
emit->clip_dist_out_index = INVALID_INDEX;
emit->clip_dist_tmp_index = INVALID_INDEX;
emit->clip_dist_so_index = INVALID_INDEX;
emit->clip_vertex_out_index = INVALID_INDEX;
if (emit->key.fs.alpha_func == SVGA3D_CMP_INVALID) {
emit->key.fs.alpha_func = SVGA3D_CMP_ALWAYS;
}
if (unit == PIPE_SHADER_FRAGMENT) {
if (key->fs.light_twoside) {
tokens = transform_fs_twoside(tokens);
}
if (key->fs.pstipple) {
const struct tgsi_token *new_tokens =
transform_fs_pstipple(emit, tokens);
if (tokens != shader->tokens) {
/* free the two-sided shader tokens */
tgsi_free_tokens(tokens);
}
tokens = new_tokens;
}
if (key->fs.aa_point) {
tokens = transform_fs_aapoint(tokens, key->fs.aa_point_coord_index);
}
}
if (SVGA_DEBUG & DEBUG_TGSI) {
debug_printf("#####################################\n");
debug_printf("### TGSI Shader %u\n", shader->id);
tgsi_dump(tokens, 0);
}
/**
* Rescan the header if the token string is different from the one
* included in the shader; otherwise, the header info is already up-to-date
*/
if (tokens != shader->tokens) {
tgsi_scan_shader(tokens, &emit->info);
} else {
emit->info = shader->info;
}
emit->num_outputs = emit->info.num_outputs;
if (unit == PIPE_SHADER_FRAGMENT) {
/* Compute FS input remapping to match the output from VS/GS */
if (gs) {
svga_link_shaders(&gs->base.info, &emit->info, &emit->linkage);
} else {
assert(vs);
svga_link_shaders(&vs->base.info, &emit->info, &emit->linkage);
}
} else if (unit == PIPE_SHADER_GEOMETRY) {
assert(vs);
svga_link_shaders(&vs->base.info, &emit->info, &emit->linkage);
}
determine_clipping_mode(emit);
if (unit == PIPE_SHADER_GEOMETRY || unit == PIPE_SHADER_VERTEX) {
if (shader->stream_output != NULL || emit->clip_mode == CLIP_DISTANCE) {
/* if there is stream output declarations associated
* with this shader or the shader writes to ClipDistance
* then reserve extra registers for the non-adjusted vertex position
* and the ClipDistance shadow copy
*/
emit->vposition.so_index = emit->num_outputs++;
if (emit->clip_mode == CLIP_DISTANCE) {
emit->clip_dist_so_index = emit->num_outputs++;
if (emit->info.num_written_clipdistance > 4)
emit->num_outputs++;
}
}
}
/*
* Do actual shader translation.
*/
if (!emit_vgpu10_header(emit)) {
debug_printf("svga: emit VGPU10 header failed\n");
goto cleanup;
}
if (!emit_vgpu10_instructions(emit, tokens)) {
debug_printf("svga: emit VGPU10 instructions failed\n");
goto cleanup;
}
if (!emit_vgpu10_tail(emit)) {
debug_printf("svga: emit VGPU10 tail failed\n");
goto cleanup;
}
if (emit->register_overflow) {
goto cleanup;
}
/*
* Create, initialize the 'variant' object.
*/
variant = svga_new_shader_variant(svga);
if (!variant)
goto cleanup;
variant->shader = shader;
variant->nr_tokens = emit_get_num_tokens(emit);
variant->tokens = (const unsigned *)emit->buf;
emit->buf = NULL; /* buffer is no longer owed by emitter context */
memcpy(&variant->key, key, sizeof(*key));
variant->id = UTIL_BITMASK_INVALID_INDEX;
/* The extra constant starting offset starts with the number of
* shader constants declared in the shader.
*/
variant->extra_const_start = emit->num_shader_consts[0];
if (key->gs.wide_point) {
/**
* The extra constant added in the transformed shader
* for inverse viewport scale is to be supplied by the driver.
* So the extra constant starting offset needs to be reduced by 1.
*/
assert(variant->extra_const_start > 0);
variant->extra_const_start--;
}
variant->pstipple_sampler_unit = emit->fs.pstipple_sampler_unit;
/* If there was exactly one write to a fragment shader output register
* and it came from a constant buffer, we know all fragments will have
* the same color (except for blending).
*/
variant->constant_color_output =
emit->constant_color_output && emit->num_output_writes == 1;
/** keep track in the variant if flat interpolation is used
* for any of the varyings.
*/
variant->uses_flat_interp = emit->uses_flat_interp;
variant->fs_shadow_compare_units = emit->fs.shadow_compare_units;
if (tokens != shader->tokens) {
tgsi_free_tokens(tokens);
}
cleanup:
free_emitter(emit);
done:
SVGA_STATS_TIME_POP(svga_sws(svga));
return variant;
}