/**************************************************************************
*
* Copyright 2007 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
*
**************************************************************************/
/* Authors: Keith Whitwell <keithw@vmware.com>
*/
#include "draw/draw_context.h"
#include "util/u_helpers.h"
#include "util/u_inlines.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "util/u_transfer.h"
#include "tgsi/tgsi_parse.h"
#include "i915_context.h"
#include "i915_reg.h"
#include "i915_state_inlines.h"
#include "i915_fpc.h"
#include "i915_resource.h"
#include "i915_state.h"
/* The i915 (and related graphics cores) do not support GL_CLAMP. The
* Intel drivers for "other operating systems" implement GL_CLAMP as
* GL_CLAMP_TO_EDGE, so the same is done here.
*/
static unsigned
translate_wrap_mode(unsigned wrap)
{
switch (wrap) {
case PIPE_TEX_WRAP_REPEAT:
return TEXCOORDMODE_WRAP;
case PIPE_TEX_WRAP_CLAMP:
return TEXCOORDMODE_CLAMP_EDGE; /* not quite correct */
case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
return TEXCOORDMODE_CLAMP_EDGE;
case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
return TEXCOORDMODE_CLAMP_BORDER;
case PIPE_TEX_WRAP_MIRROR_REPEAT:
return TEXCOORDMODE_MIRROR;
default:
return TEXCOORDMODE_WRAP;
}
}
static unsigned translate_img_filter( unsigned filter )
{
switch (filter) {
case PIPE_TEX_FILTER_NEAREST:
return FILTER_NEAREST;
case PIPE_TEX_FILTER_LINEAR:
return FILTER_LINEAR;
default:
assert(0);
return FILTER_NEAREST;
}
}
static unsigned translate_mip_filter( unsigned filter )
{
switch (filter) {
case PIPE_TEX_MIPFILTER_NONE:
return MIPFILTER_NONE;
case PIPE_TEX_MIPFILTER_NEAREST:
return MIPFILTER_NEAREST;
case PIPE_TEX_MIPFILTER_LINEAR:
return MIPFILTER_LINEAR;
default:
assert(0);
return MIPFILTER_NONE;
}
}
/* None of this state is actually used for anything yet.
*/
static void *
i915_create_blend_state(struct pipe_context *pipe,
const struct pipe_blend_state *blend)
{
struct i915_blend_state *cso_data = CALLOC_STRUCT( i915_blend_state );
{
unsigned eqRGB = blend->rt[0].rgb_func;
unsigned srcRGB = blend->rt[0].rgb_src_factor;
unsigned dstRGB = blend->rt[0].rgb_dst_factor;
unsigned eqA = blend->rt[0].alpha_func;
unsigned srcA = blend->rt[0].alpha_src_factor;
unsigned dstA = blend->rt[0].alpha_dst_factor;
/* Special handling for MIN/MAX filter modes handled at
* state_tracker level.
*/
if (srcA != srcRGB ||
dstA != dstRGB ||
eqA != eqRGB) {
cso_data->iab = (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD |
IAB_MODIFY_ENABLE |
IAB_ENABLE |
IAB_MODIFY_FUNC |
IAB_MODIFY_SRC_FACTOR |
IAB_MODIFY_DST_FACTOR |
SRC_ABLND_FACT(i915_translate_blend_factor(srcA)) |
DST_ABLND_FACT(i915_translate_blend_factor(dstA)) |
(i915_translate_blend_func(eqA) << IAB_FUNC_SHIFT));
}
else {
cso_data->iab = (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD |
IAB_MODIFY_ENABLE |
0);
}
}
cso_data->modes4 |= (_3DSTATE_MODES_4_CMD |
ENABLE_LOGIC_OP_FUNC |
LOGIC_OP_FUNC(i915_translate_logic_op(blend->logicop_func)));
if (blend->logicop_enable)
cso_data->LIS5 |= S5_LOGICOP_ENABLE;
if (blend->dither)
cso_data->LIS5 |= S5_COLOR_DITHER_ENABLE;
/* We potentially do some fixup at emission for non-BGRA targets */
if ((blend->rt[0].colormask & PIPE_MASK_R) == 0)
cso_data->LIS5 |= S5_WRITEDISABLE_RED;
if ((blend->rt[0].colormask & PIPE_MASK_G) == 0)
cso_data->LIS5 |= S5_WRITEDISABLE_GREEN;
if ((blend->rt[0].colormask & PIPE_MASK_B) == 0)
cso_data->LIS5 |= S5_WRITEDISABLE_BLUE;
if ((blend->rt[0].colormask & PIPE_MASK_A) == 0)
cso_data->LIS5 |= S5_WRITEDISABLE_ALPHA;
if (blend->rt[0].blend_enable) {
unsigned funcRGB = blend->rt[0].rgb_func;
unsigned srcRGB = blend->rt[0].rgb_src_factor;
unsigned dstRGB = blend->rt[0].rgb_dst_factor;
cso_data->LIS6 |= (S6_CBUF_BLEND_ENABLE |
SRC_BLND_FACT(i915_translate_blend_factor(srcRGB)) |
DST_BLND_FACT(i915_translate_blend_factor(dstRGB)) |
(i915_translate_blend_func(funcRGB) << S6_CBUF_BLEND_FUNC_SHIFT));
}
return cso_data;
}
static void i915_bind_blend_state(struct pipe_context *pipe,
void *blend)
{
struct i915_context *i915 = i915_context(pipe);
if (i915->blend == blend)
return;
i915->blend = (struct i915_blend_state*)blend;
i915->dirty |= I915_NEW_BLEND;
}
static void i915_delete_blend_state(struct pipe_context *pipe, void *blend)
{
FREE(blend);
}
static void i915_set_blend_color( struct pipe_context *pipe,
const struct pipe_blend_color *blend_color )
{
struct i915_context *i915 = i915_context(pipe);
if (!blend_color)
return;
i915->blend_color = *blend_color;
i915->dirty |= I915_NEW_BLEND;
}
static void i915_set_stencil_ref( struct pipe_context *pipe,
const struct pipe_stencil_ref *stencil_ref )
{
struct i915_context *i915 = i915_context(pipe);
i915->stencil_ref = *stencil_ref;
i915->dirty |= I915_NEW_DEPTH_STENCIL;
}
static void *
i915_create_sampler_state(struct pipe_context *pipe,
const struct pipe_sampler_state *sampler)
{
struct i915_sampler_state *cso = CALLOC_STRUCT( i915_sampler_state );
const unsigned ws = sampler->wrap_s;
const unsigned wt = sampler->wrap_t;
const unsigned wr = sampler->wrap_r;
unsigned minFilt, magFilt;
unsigned mipFilt;
cso->templ = *sampler;
mipFilt = translate_mip_filter(sampler->min_mip_filter);
minFilt = translate_img_filter( sampler->min_img_filter );
magFilt = translate_img_filter( sampler->mag_img_filter );
if (sampler->max_anisotropy > 1)
minFilt = magFilt = FILTER_ANISOTROPIC;
if (sampler->max_anisotropy > 2) {
cso->state[0] |= SS2_MAX_ANISO_4;
}
{
int b = (int) (sampler->lod_bias * 16.0);
b = CLAMP(b, -256, 255);
cso->state[0] |= ((b << SS2_LOD_BIAS_SHIFT) & SS2_LOD_BIAS_MASK);
}
/* Shadow:
*/
if (sampler->compare_mode == PIPE_TEX_COMPARE_R_TO_TEXTURE)
{
cso->state[0] |= (SS2_SHADOW_ENABLE |
i915_translate_shadow_compare_func(sampler->compare_func));
minFilt = FILTER_4X4_FLAT;
magFilt = FILTER_4X4_FLAT;
}
cso->state[0] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
(mipFilt << SS2_MIP_FILTER_SHIFT) |
(magFilt << SS2_MAG_FILTER_SHIFT));
cso->state[1] |=
((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
(translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
(translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));
if (sampler->normalized_coords)
cso->state[1] |= SS3_NORMALIZED_COORDS;
{
int minlod = (int) (16.0 * sampler->min_lod);
int maxlod = (int) (16.0 * sampler->max_lod);
minlod = CLAMP(minlod, 0, 16 * 11);
maxlod = CLAMP(maxlod, 0, 16 * 11);
if (minlod > maxlod)
maxlod = minlod;
cso->minlod = minlod;
cso->maxlod = maxlod;
}
{
ubyte r = float_to_ubyte(sampler->border_color.f[0]);
ubyte g = float_to_ubyte(sampler->border_color.f[1]);
ubyte b = float_to_ubyte(sampler->border_color.f[2]);
ubyte a = float_to_ubyte(sampler->border_color.f[3]);
cso->state[2] = I915PACKCOLOR8888(r, g, b, a);
}
return cso;
}
static void
i915_bind_vertex_sampler_states(struct pipe_context *pipe,
unsigned start,
unsigned num,
void **samplers)
{
struct i915_context *i915 = i915_context(pipe);
unsigned i;
assert(start + num <= ARRAY_SIZE(i915->vertex_samplers));
/* Check for no-op */
if (num == i915->num_vertex_samplers &&
!memcmp(i915->vertex_samplers + start, samplers,
num * sizeof(void *)))
return;
for (i = 0; i < num; ++i)
i915->vertex_samplers[i + start] = samplers[i];
/* find highest non-null samplers[] entry */
{
unsigned j = MAX2(i915->num_vertex_samplers, start + num);
while (j > 0 && i915->vertex_samplers[j - 1] == NULL)
j--;
i915->num_vertex_samplers = j;
}
draw_set_samplers(i915->draw,
PIPE_SHADER_VERTEX,
i915->vertex_samplers,
i915->num_vertex_samplers);
}
static void i915_bind_fragment_sampler_states(struct pipe_context *pipe,
unsigned start,
unsigned num,
void **samplers)
{
struct i915_context *i915 = i915_context(pipe);
unsigned i;
/* Check for no-op */
if (num == i915->num_samplers &&
!memcmp(i915->fragment_sampler + start, samplers,
num * sizeof(void *)))
return;
for (i = 0; i < num; ++i)
i915->fragment_sampler[i + start] = samplers[i];
/* find highest non-null samplers[] entry */
{
unsigned j = MAX2(i915->num_samplers, start + num);
while (j > 0 && i915->fragment_sampler[j - 1] == NULL)
j--;
i915->num_samplers = j;
}
i915->dirty |= I915_NEW_SAMPLER;
}
static void
i915_bind_sampler_states(struct pipe_context *pipe,
enum pipe_shader_type shader,
unsigned start, unsigned num_samplers,
void **samplers)
{
switch (shader) {
case PIPE_SHADER_VERTEX:
i915_bind_vertex_sampler_states(pipe, start, num_samplers, samplers);
break;
case PIPE_SHADER_FRAGMENT:
i915_bind_fragment_sampler_states(pipe, start, num_samplers, samplers);
break;
default:
;
}
}
static void i915_delete_sampler_state(struct pipe_context *pipe,
void *sampler)
{
FREE(sampler);
}
/**
* Called before drawing VBO to map vertex samplers and hand them to draw
*/
void
i915_prepare_vertex_sampling(struct i915_context *i915)
{
struct i915_winsys *iws = i915->iws;
unsigned i,j;
uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS];
uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS];
uint32_t mip_offsets[PIPE_MAX_TEXTURE_LEVELS];
unsigned num = i915->num_vertex_sampler_views;
struct pipe_sampler_view **views = i915->vertex_sampler_views;
assert(num <= PIPE_MAX_SAMPLERS);
if (!num)
return;
for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
struct pipe_sampler_view *view = i < num ? views[i] : NULL;
if (view) {
struct pipe_resource *tex = view->texture;
struct i915_texture *i915_tex = i915_texture(tex);
ubyte *addr;
/* We're referencing the texture's internal data, so save a
* reference to it.
*/
pipe_resource_reference(&i915->mapped_vs_tex[i], tex);
i915->mapped_vs_tex_buffer[i] = i915_tex->buffer;
addr = iws->buffer_map(iws,
i915_tex->buffer,
FALSE /* read only */);
/* Setup array of mipmap level pointers */
/* FIXME: handle 3D textures? */
for (j = view->u.tex.first_level; j <= tex->last_level; j++) {
mip_offsets[j] = i915_texture_offset(i915_tex, j , 0 /* FIXME depth */);
row_stride[j] = i915_tex->stride;
img_stride[j] = 0; /* FIXME */
}
draw_set_mapped_texture(i915->draw,
PIPE_SHADER_VERTEX,
i,
tex->width0, tex->height0, tex->depth0,
view->u.tex.first_level, tex->last_level,
addr,
row_stride, img_stride, mip_offsets);
} else
i915->mapped_vs_tex[i] = NULL;
}
}
void
i915_cleanup_vertex_sampling(struct i915_context *i915)
{
struct i915_winsys *iws = i915->iws;
unsigned i;
for (i = 0; i < ARRAY_SIZE(i915->mapped_vs_tex); i++) {
if (i915->mapped_vs_tex_buffer[i]) {
iws->buffer_unmap(iws, i915->mapped_vs_tex_buffer[i]);
pipe_resource_reference(&i915->mapped_vs_tex[i], NULL);
}
}
}
/** XXX move someday? Or consolidate all these simple state setters
* into one file.
*/
static void *
i915_create_depth_stencil_state(struct pipe_context *pipe,
const struct pipe_depth_stencil_alpha_state *depth_stencil)
{
struct i915_depth_stencil_state *cso = CALLOC_STRUCT( i915_depth_stencil_state );
{
int testmask = depth_stencil->stencil[0].valuemask & 0xff;
int writemask = depth_stencil->stencil[0].writemask & 0xff;
cso->stencil_modes4 |= (_3DSTATE_MODES_4_CMD |
ENABLE_STENCIL_TEST_MASK |
STENCIL_TEST_MASK(testmask) |
ENABLE_STENCIL_WRITE_MASK |
STENCIL_WRITE_MASK(writemask));
}
if (depth_stencil->stencil[0].enabled) {
int test = i915_translate_compare_func(depth_stencil->stencil[0].func);
int fop = i915_translate_stencil_op(depth_stencil->stencil[0].fail_op);
int dfop = i915_translate_stencil_op(depth_stencil->stencil[0].zfail_op);
int dpop = i915_translate_stencil_op(depth_stencil->stencil[0].zpass_op);
cso->stencil_LIS5 |= (S5_STENCIL_TEST_ENABLE |
S5_STENCIL_WRITE_ENABLE |
(test << S5_STENCIL_TEST_FUNC_SHIFT) |
(fop << S5_STENCIL_FAIL_SHIFT) |
(dfop << S5_STENCIL_PASS_Z_FAIL_SHIFT) |
(dpop << S5_STENCIL_PASS_Z_PASS_SHIFT));
}
if (depth_stencil->stencil[1].enabled) {
int test = i915_translate_compare_func(depth_stencil->stencil[1].func);
int fop = i915_translate_stencil_op(depth_stencil->stencil[1].fail_op);
int dfop = i915_translate_stencil_op(depth_stencil->stencil[1].zfail_op);
int dpop = i915_translate_stencil_op(depth_stencil->stencil[1].zpass_op);
int tmask = depth_stencil->stencil[1].valuemask & 0xff;
int wmask = depth_stencil->stencil[1].writemask & 0xff;
cso->bfo[0] = (_3DSTATE_BACKFACE_STENCIL_OPS |
BFO_ENABLE_STENCIL_FUNCS |
BFO_ENABLE_STENCIL_TWO_SIDE |
BFO_ENABLE_STENCIL_REF |
BFO_STENCIL_TWO_SIDE |
(test << BFO_STENCIL_TEST_SHIFT) |
(fop << BFO_STENCIL_FAIL_SHIFT) |
(dfop << BFO_STENCIL_PASS_Z_FAIL_SHIFT) |
(dpop << BFO_STENCIL_PASS_Z_PASS_SHIFT));
cso->bfo[1] = (_3DSTATE_BACKFACE_STENCIL_MASKS |
BFM_ENABLE_STENCIL_TEST_MASK |
BFM_ENABLE_STENCIL_WRITE_MASK |
(tmask << BFM_STENCIL_TEST_MASK_SHIFT) |
(wmask << BFM_STENCIL_WRITE_MASK_SHIFT));
}
else {
/* This actually disables two-side stencil: The bit set is a
* modify-enable bit to indicate we are changing the two-side
* setting. Then there is a symbolic zero to show that we are
* setting the flag to zero/off.
*/
cso->bfo[0] = (_3DSTATE_BACKFACE_STENCIL_OPS |
BFO_ENABLE_STENCIL_TWO_SIDE |
0);
cso->bfo[1] = 0;
}
if (depth_stencil->depth.enabled) {
int func = i915_translate_compare_func(depth_stencil->depth.func);
cso->depth_LIS6 |= (S6_DEPTH_TEST_ENABLE |
(func << S6_DEPTH_TEST_FUNC_SHIFT));
if (depth_stencil->depth.writemask)
cso->depth_LIS6 |= S6_DEPTH_WRITE_ENABLE;
}
if (depth_stencil->alpha.enabled) {
int test = i915_translate_compare_func(depth_stencil->alpha.func);
ubyte refByte = float_to_ubyte(depth_stencil->alpha.ref_value);
cso->depth_LIS6 |= (S6_ALPHA_TEST_ENABLE |
(test << S6_ALPHA_TEST_FUNC_SHIFT) |
(((unsigned) refByte) << S6_ALPHA_REF_SHIFT));
}
return cso;
}
static void i915_bind_depth_stencil_state(struct pipe_context *pipe,
void *depth_stencil)
{
struct i915_context *i915 = i915_context(pipe);
if (i915->depth_stencil == depth_stencil)
return;
i915->depth_stencil = (const struct i915_depth_stencil_state *)depth_stencil;
i915->dirty |= I915_NEW_DEPTH_STENCIL;
}
static void i915_delete_depth_stencil_state(struct pipe_context *pipe,
void *depth_stencil)
{
FREE(depth_stencil);
}
static void i915_set_scissor_states( struct pipe_context *pipe,
unsigned start_slot,
unsigned num_scissors,
const struct pipe_scissor_state *scissor )
{
struct i915_context *i915 = i915_context(pipe);
memcpy( &i915->scissor, scissor, sizeof(*scissor) );
i915->dirty |= I915_NEW_SCISSOR;
}
static void i915_set_polygon_stipple( struct pipe_context *pipe,
const struct pipe_poly_stipple *stipple )
{
}
static void *
i915_create_fs_state(struct pipe_context *pipe,
const struct pipe_shader_state *templ)
{
struct i915_context *i915 = i915_context(pipe);
struct i915_fragment_shader *ifs = CALLOC_STRUCT(i915_fragment_shader);
if (!ifs)
return NULL;
ifs->draw_data = draw_create_fragment_shader(i915->draw, templ);
ifs->state.tokens = tgsi_dup_tokens(templ->tokens);
tgsi_scan_shader(templ->tokens, &ifs->info);
/* The shader's compiled to i915 instructions here */
i915_translate_fragment_program(i915, ifs);
return ifs;
}
static void
i915_bind_fs_state(struct pipe_context *pipe, void *shader)
{
struct i915_context *i915 = i915_context(pipe);
if (i915->fs == shader)
return;
i915->fs = (struct i915_fragment_shader*) shader;
draw_bind_fragment_shader(i915->draw, (i915->fs ? i915->fs->draw_data : NULL));
i915->dirty |= I915_NEW_FS;
}
static
void i915_delete_fs_state(struct pipe_context *pipe, void *shader)
{
struct i915_fragment_shader *ifs = (struct i915_fragment_shader *) shader;
FREE(ifs->decl);
ifs->decl = NULL;
FREE(ifs->program);
ifs->program = NULL;
FREE((struct tgsi_token *)ifs->state.tokens);
ifs->state.tokens = NULL;
ifs->program_len = 0;
ifs->decl_len = 0;
FREE(ifs);
}
static void *
i915_create_vs_state(struct pipe_context *pipe,
const struct pipe_shader_state *templ)
{
struct i915_context *i915 = i915_context(pipe);
/* just pass-through to draw module */
return draw_create_vertex_shader(i915->draw, templ);
}
static void i915_bind_vs_state(struct pipe_context *pipe, void *shader)
{
struct i915_context *i915 = i915_context(pipe);
if (i915->vs == shader)
return;
i915->vs = shader;
/* just pass-through to draw module */
draw_bind_vertex_shader(i915->draw, (struct draw_vertex_shader *) shader);
i915->dirty |= I915_NEW_VS;
}
static void i915_delete_vs_state(struct pipe_context *pipe, void *shader)
{
struct i915_context *i915 = i915_context(pipe);
/* just pass-through to draw module */
draw_delete_vertex_shader(i915->draw, (struct draw_vertex_shader *) shader);
}
static void i915_set_constant_buffer(struct pipe_context *pipe,
enum pipe_shader_type shader, uint index,
const struct pipe_constant_buffer *cb)
{
struct i915_context *i915 = i915_context(pipe);
struct pipe_resource *buf = cb ? cb->buffer : NULL;
unsigned new_num = 0;
boolean diff = TRUE;
/* XXX don't support geom shaders now */
if (shader == PIPE_SHADER_GEOMETRY)
return;
if (cb && cb->user_buffer) {
buf = i915_user_buffer_create(pipe->screen, (void *) cb->user_buffer,
cb->buffer_size,
PIPE_BIND_CONSTANT_BUFFER);
}
/* if we have a new buffer compare it with the old one */
if (buf) {
struct i915_buffer *ibuf = i915_buffer(buf);
struct pipe_resource *old_buf = i915->constants[shader];
struct i915_buffer *old = old_buf ? i915_buffer(old_buf) : NULL;
unsigned old_num = i915->current.num_user_constants[shader];
new_num = ibuf->b.b.width0 / 4 * sizeof(float);
if (old_num == new_num) {
if (old_num == 0)
diff = FALSE;
#if 0
/* XXX no point in running this code since st/mesa only uses user buffers */
/* Can't compare the buffer data since they are userbuffers */
else if (old && old->free_on_destroy)
diff = memcmp(old->data, ibuf->data, ibuf->b.b.width0);
#else
(void)old;
#endif
}
} else {
diff = i915->current.num_user_constants[shader] != 0;
}
pipe_resource_reference(&i915->constants[shader], buf);
i915->current.num_user_constants[shader] = new_num;
if (diff)
i915->dirty |= shader == PIPE_SHADER_VERTEX ? I915_NEW_VS_CONSTANTS : I915_NEW_FS_CONSTANTS;
if (cb && cb->user_buffer) {
pipe_resource_reference(&buf, NULL);
}
}
static void i915_set_fragment_sampler_views(struct pipe_context *pipe,
unsigned num,
struct pipe_sampler_view **views)
{
struct i915_context *i915 = i915_context(pipe);
uint i;
assert(num <= PIPE_MAX_SAMPLERS);
/* Check for no-op */
if (num == i915->num_fragment_sampler_views &&
!memcmp(i915->fragment_sampler_views, views, num * sizeof(struct pipe_sampler_view *)))
return;
for (i = 0; i < num; i++) {
/* Note: we're using pipe_sampler_view_release() here to work around
* a possible crash when the old view belongs to another context that
* was already destroyed.
*/
pipe_sampler_view_release(pipe, &i915->fragment_sampler_views[i]);
pipe_sampler_view_reference(&i915->fragment_sampler_views[i],
views[i]);
}
for (i = num; i < i915->num_fragment_sampler_views; i++)
pipe_sampler_view_release(pipe, &i915->fragment_sampler_views[i]);
i915->num_fragment_sampler_views = num;
i915->dirty |= I915_NEW_SAMPLER_VIEW;
}
static void
i915_set_vertex_sampler_views(struct pipe_context *pipe,
unsigned num,
struct pipe_sampler_view **views)
{
struct i915_context *i915 = i915_context(pipe);
uint i;
assert(num <= ARRAY_SIZE(i915->vertex_sampler_views));
/* Check for no-op */
if (num == i915->num_vertex_sampler_views &&
!memcmp(i915->vertex_sampler_views, views, num * sizeof(struct pipe_sampler_view *))) {
return;
}
for (i = 0; i < ARRAY_SIZE(i915->vertex_sampler_views); i++) {
struct pipe_sampler_view *view = i < num ? views[i] : NULL;
pipe_sampler_view_reference(&i915->vertex_sampler_views[i], view);
}
i915->num_vertex_sampler_views = num;
draw_set_sampler_views(i915->draw,
PIPE_SHADER_VERTEX,
i915->vertex_sampler_views,
i915->num_vertex_sampler_views);
}
static void
i915_set_sampler_views(struct pipe_context *pipe, enum pipe_shader_type shader,
unsigned start, unsigned num,
struct pipe_sampler_view **views)
{
assert(start == 0);
switch (shader) {
case PIPE_SHADER_FRAGMENT:
i915_set_fragment_sampler_views(pipe, num, views);
break;
case PIPE_SHADER_VERTEX:
i915_set_vertex_sampler_views(pipe, num, views);
break;
default:
;
}
}
struct pipe_sampler_view *
i915_create_sampler_view_custom(struct pipe_context *pipe,
struct pipe_resource *texture,
const struct pipe_sampler_view *templ,
unsigned width0,
unsigned height0)
{
struct pipe_sampler_view *view = CALLOC_STRUCT(pipe_sampler_view);
if (view) {
*view = *templ;
view->reference.count = 1;
view->texture = NULL;
pipe_resource_reference(&view->texture, texture);
view->context = pipe;
}
return view;
}
static struct pipe_sampler_view *
i915_create_sampler_view(struct pipe_context *pipe,
struct pipe_resource *texture,
const struct pipe_sampler_view *templ)
{
struct pipe_sampler_view *view = CALLOC_STRUCT(pipe_sampler_view);
if (view) {
*view = *templ;
view->reference.count = 1;
view->texture = NULL;
pipe_resource_reference(&view->texture, texture);
view->context = pipe;
}
return view;
}
static void
i915_sampler_view_destroy(struct pipe_context *pipe,
struct pipe_sampler_view *view)
{
pipe_resource_reference(&view->texture, NULL);
FREE(view);
}
static void i915_set_framebuffer_state(struct pipe_context *pipe,
const struct pipe_framebuffer_state *fb)
{
struct i915_context *i915 = i915_context(pipe);
int i;
i915->framebuffer.width = fb->width;
i915->framebuffer.height = fb->height;
i915->framebuffer.nr_cbufs = fb->nr_cbufs;
for (i = 0; i < PIPE_MAX_COLOR_BUFS; i++) {
pipe_surface_reference(&i915->framebuffer.cbufs[i],
i < fb->nr_cbufs ? fb->cbufs[i] : NULL);
}
pipe_surface_reference(&i915->framebuffer.zsbuf, fb->zsbuf);
i915->dirty |= I915_NEW_FRAMEBUFFER;
}
static void i915_set_clip_state( struct pipe_context *pipe,
const struct pipe_clip_state *clip )
{
struct i915_context *i915 = i915_context(pipe);
i915->clip = *clip;
draw_set_clip_state(i915->draw, clip);
i915->dirty |= I915_NEW_CLIP;
}
/* Called when driver state tracker notices changes to the viewport
* matrix:
*/
static void i915_set_viewport_states( struct pipe_context *pipe,
unsigned start_slot,
unsigned num_viewports,
const struct pipe_viewport_state *viewport )
{
struct i915_context *i915 = i915_context(pipe);
i915->viewport = *viewport; /* struct copy */
/* pass the viewport info to the draw module */
draw_set_viewport_states(i915->draw, start_slot, num_viewports,
&i915->viewport);
i915->dirty |= I915_NEW_VIEWPORT;
}
static void *
i915_create_rasterizer_state(struct pipe_context *pipe,
const struct pipe_rasterizer_state *rasterizer)
{
struct i915_rasterizer_state *cso = CALLOC_STRUCT( i915_rasterizer_state );
cso->templ = *rasterizer;
cso->light_twoside = rasterizer->light_twoside;
cso->ds[0].u = _3DSTATE_DEPTH_OFFSET_SCALE;
cso->ds[1].f = rasterizer->offset_scale;
if (rasterizer->poly_stipple_enable) {
cso->st |= ST1_ENABLE;
}
if (rasterizer->scissor)
cso->sc[0] = _3DSTATE_SCISSOR_ENABLE_CMD | ENABLE_SCISSOR_RECT;
else
cso->sc[0] = _3DSTATE_SCISSOR_ENABLE_CMD | DISABLE_SCISSOR_RECT;
switch (rasterizer->cull_face) {
case PIPE_FACE_NONE:
cso->LIS4 |= S4_CULLMODE_NONE;
break;
case PIPE_FACE_FRONT:
if (rasterizer->front_ccw)
cso->LIS4 |= S4_CULLMODE_CCW;
else
cso->LIS4 |= S4_CULLMODE_CW;
break;
case PIPE_FACE_BACK:
if (rasterizer->front_ccw)
cso->LIS4 |= S4_CULLMODE_CW;
else
cso->LIS4 |= S4_CULLMODE_CCW;
break;
case PIPE_FACE_FRONT_AND_BACK:
cso->LIS4 |= S4_CULLMODE_BOTH;
break;
}
{
int line_width = CLAMP((int)(rasterizer->line_width * 2), 1, 0xf);
cso->LIS4 |= line_width << S4_LINE_WIDTH_SHIFT;
if (rasterizer->line_smooth)
cso->LIS4 |= S4_LINE_ANTIALIAS_ENABLE;
}
{
int point_size = CLAMP((int) rasterizer->point_size, 1, 0xff);
cso->LIS4 |= point_size << S4_POINT_WIDTH_SHIFT;
}
if (rasterizer->flatshade) {
cso->LIS4 |= (S4_FLATSHADE_ALPHA |
S4_FLATSHADE_COLOR |
S4_FLATSHADE_SPECULAR);
}
cso->LIS7 = fui( rasterizer->offset_units );
return cso;
}
static void i915_bind_rasterizer_state( struct pipe_context *pipe,
void *raster )
{
struct i915_context *i915 = i915_context(pipe);
if (i915->rasterizer == raster)
return;
i915->rasterizer = (struct i915_rasterizer_state *)raster;
/* pass-through to draw module */
draw_set_rasterizer_state(i915->draw,
(i915->rasterizer ? &(i915->rasterizer->templ) : NULL),
raster);
i915->dirty |= I915_NEW_RASTERIZER;
}
static void i915_delete_rasterizer_state(struct pipe_context *pipe,
void *raster)
{
FREE(raster);
}
static void i915_set_vertex_buffers(struct pipe_context *pipe,
unsigned start_slot, unsigned count,
const struct pipe_vertex_buffer *buffers)
{
struct i915_context *i915 = i915_context(pipe);
struct draw_context *draw = i915->draw;
util_set_vertex_buffers_count(i915->vertex_buffers,
&i915->nr_vertex_buffers,
buffers, start_slot, count);
/* pass-through to draw module */
draw_set_vertex_buffers(draw, start_slot, count, buffers);
}
static void *
i915_create_vertex_elements_state(struct pipe_context *pipe,
unsigned count,
const struct pipe_vertex_element *attribs)
{
struct i915_velems_state *velems;
assert(count <= PIPE_MAX_ATTRIBS);
velems = (struct i915_velems_state *) MALLOC(sizeof(struct i915_velems_state));
if (velems) {
velems->count = count;
memcpy(velems->velem, attribs, sizeof(*attribs) * count);
}
return velems;
}
static void
i915_bind_vertex_elements_state(struct pipe_context *pipe,
void *velems)
{
struct i915_context *i915 = i915_context(pipe);
struct i915_velems_state *i915_velems = (struct i915_velems_state *) velems;
if (i915->velems == velems)
return;
i915->velems = velems;
/* pass-through to draw module */
if (i915_velems) {
draw_set_vertex_elements(i915->draw,
i915_velems->count, i915_velems->velem);
}
}
static void
i915_delete_vertex_elements_state(struct pipe_context *pipe, void *velems)
{
FREE( velems );
}
static void
i915_set_sample_mask(struct pipe_context *pipe,
unsigned sample_mask)
{
}
void
i915_init_state_functions( struct i915_context *i915 )
{
i915->base.create_blend_state = i915_create_blend_state;
i915->base.bind_blend_state = i915_bind_blend_state;
i915->base.delete_blend_state = i915_delete_blend_state;
i915->base.create_sampler_state = i915_create_sampler_state;
i915->base.bind_sampler_states = i915_bind_sampler_states;
i915->base.delete_sampler_state = i915_delete_sampler_state;
i915->base.create_depth_stencil_alpha_state = i915_create_depth_stencil_state;
i915->base.bind_depth_stencil_alpha_state = i915_bind_depth_stencil_state;
i915->base.delete_depth_stencil_alpha_state = i915_delete_depth_stencil_state;
i915->base.create_rasterizer_state = i915_create_rasterizer_state;
i915->base.bind_rasterizer_state = i915_bind_rasterizer_state;
i915->base.delete_rasterizer_state = i915_delete_rasterizer_state;
i915->base.create_fs_state = i915_create_fs_state;
i915->base.bind_fs_state = i915_bind_fs_state;
i915->base.delete_fs_state = i915_delete_fs_state;
i915->base.create_vs_state = i915_create_vs_state;
i915->base.bind_vs_state = i915_bind_vs_state;
i915->base.delete_vs_state = i915_delete_vs_state;
i915->base.create_vertex_elements_state = i915_create_vertex_elements_state;
i915->base.bind_vertex_elements_state = i915_bind_vertex_elements_state;
i915->base.delete_vertex_elements_state = i915_delete_vertex_elements_state;
i915->base.set_blend_color = i915_set_blend_color;
i915->base.set_stencil_ref = i915_set_stencil_ref;
i915->base.set_clip_state = i915_set_clip_state;
i915->base.set_sample_mask = i915_set_sample_mask;
i915->base.set_constant_buffer = i915_set_constant_buffer;
i915->base.set_framebuffer_state = i915_set_framebuffer_state;
i915->base.set_polygon_stipple = i915_set_polygon_stipple;
i915->base.set_scissor_states = i915_set_scissor_states;
i915->base.set_sampler_views = i915_set_sampler_views;
i915->base.create_sampler_view = i915_create_sampler_view;
i915->base.sampler_view_destroy = i915_sampler_view_destroy;
i915->base.set_viewport_states = i915_set_viewport_states;
i915->base.set_vertex_buffers = i915_set_vertex_buffers;
}