/*
* Copyright 2003 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 (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 NONINFRINGEMENT.
* 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.
*/
#include "main/bufferobj.h"
#include "main/context.h"
#include "main/enums.h"
#include "main/macros.h"
#include "main/glformats.h"
#include "brw_draw.h"
#include "brw_defines.h"
#include "brw_context.h"
#include "brw_state.h"
#include "intel_batchbuffer.h"
#include "intel_buffer_objects.h"
static const GLuint double_types_float[5] = {
0,
ISL_FORMAT_R64_FLOAT,
ISL_FORMAT_R64G64_FLOAT,
ISL_FORMAT_R64G64B64_FLOAT,
ISL_FORMAT_R64G64B64A64_FLOAT
};
static const GLuint double_types_passthru[5] = {
0,
ISL_FORMAT_R64_PASSTHRU,
ISL_FORMAT_R64G64_PASSTHRU,
ISL_FORMAT_R64G64B64_PASSTHRU,
ISL_FORMAT_R64G64B64A64_PASSTHRU
};
static const GLuint float_types[5] = {
0,
ISL_FORMAT_R32_FLOAT,
ISL_FORMAT_R32G32_FLOAT,
ISL_FORMAT_R32G32B32_FLOAT,
ISL_FORMAT_R32G32B32A32_FLOAT
};
static const GLuint half_float_types[5] = {
0,
ISL_FORMAT_R16_FLOAT,
ISL_FORMAT_R16G16_FLOAT,
ISL_FORMAT_R16G16B16_FLOAT,
ISL_FORMAT_R16G16B16A16_FLOAT
};
static const GLuint fixed_point_types[5] = {
0,
ISL_FORMAT_R32_SFIXED,
ISL_FORMAT_R32G32_SFIXED,
ISL_FORMAT_R32G32B32_SFIXED,
ISL_FORMAT_R32G32B32A32_SFIXED,
};
static const GLuint uint_types_direct[5] = {
0,
ISL_FORMAT_R32_UINT,
ISL_FORMAT_R32G32_UINT,
ISL_FORMAT_R32G32B32_UINT,
ISL_FORMAT_R32G32B32A32_UINT
};
static const GLuint uint_types_norm[5] = {
0,
ISL_FORMAT_R32_UNORM,
ISL_FORMAT_R32G32_UNORM,
ISL_FORMAT_R32G32B32_UNORM,
ISL_FORMAT_R32G32B32A32_UNORM
};
static const GLuint uint_types_scale[5] = {
0,
ISL_FORMAT_R32_USCALED,
ISL_FORMAT_R32G32_USCALED,
ISL_FORMAT_R32G32B32_USCALED,
ISL_FORMAT_R32G32B32A32_USCALED
};
static const GLuint int_types_direct[5] = {
0,
ISL_FORMAT_R32_SINT,
ISL_FORMAT_R32G32_SINT,
ISL_FORMAT_R32G32B32_SINT,
ISL_FORMAT_R32G32B32A32_SINT
};
static const GLuint int_types_norm[5] = {
0,
ISL_FORMAT_R32_SNORM,
ISL_FORMAT_R32G32_SNORM,
ISL_FORMAT_R32G32B32_SNORM,
ISL_FORMAT_R32G32B32A32_SNORM
};
static const GLuint int_types_scale[5] = {
0,
ISL_FORMAT_R32_SSCALED,
ISL_FORMAT_R32G32_SSCALED,
ISL_FORMAT_R32G32B32_SSCALED,
ISL_FORMAT_R32G32B32A32_SSCALED
};
static const GLuint ushort_types_direct[5] = {
0,
ISL_FORMAT_R16_UINT,
ISL_FORMAT_R16G16_UINT,
ISL_FORMAT_R16G16B16_UINT,
ISL_FORMAT_R16G16B16A16_UINT
};
static const GLuint ushort_types_norm[5] = {
0,
ISL_FORMAT_R16_UNORM,
ISL_FORMAT_R16G16_UNORM,
ISL_FORMAT_R16G16B16_UNORM,
ISL_FORMAT_R16G16B16A16_UNORM
};
static const GLuint ushort_types_scale[5] = {
0,
ISL_FORMAT_R16_USCALED,
ISL_FORMAT_R16G16_USCALED,
ISL_FORMAT_R16G16B16_USCALED,
ISL_FORMAT_R16G16B16A16_USCALED
};
static const GLuint short_types_direct[5] = {
0,
ISL_FORMAT_R16_SINT,
ISL_FORMAT_R16G16_SINT,
ISL_FORMAT_R16G16B16_SINT,
ISL_FORMAT_R16G16B16A16_SINT
};
static const GLuint short_types_norm[5] = {
0,
ISL_FORMAT_R16_SNORM,
ISL_FORMAT_R16G16_SNORM,
ISL_FORMAT_R16G16B16_SNORM,
ISL_FORMAT_R16G16B16A16_SNORM
};
static const GLuint short_types_scale[5] = {
0,
ISL_FORMAT_R16_SSCALED,
ISL_FORMAT_R16G16_SSCALED,
ISL_FORMAT_R16G16B16_SSCALED,
ISL_FORMAT_R16G16B16A16_SSCALED
};
static const GLuint ubyte_types_direct[5] = {
0,
ISL_FORMAT_R8_UINT,
ISL_FORMAT_R8G8_UINT,
ISL_FORMAT_R8G8B8_UINT,
ISL_FORMAT_R8G8B8A8_UINT
};
static const GLuint ubyte_types_norm[5] = {
0,
ISL_FORMAT_R8_UNORM,
ISL_FORMAT_R8G8_UNORM,
ISL_FORMAT_R8G8B8_UNORM,
ISL_FORMAT_R8G8B8A8_UNORM
};
static const GLuint ubyte_types_scale[5] = {
0,
ISL_FORMAT_R8_USCALED,
ISL_FORMAT_R8G8_USCALED,
ISL_FORMAT_R8G8B8_USCALED,
ISL_FORMAT_R8G8B8A8_USCALED
};
static const GLuint byte_types_direct[5] = {
0,
ISL_FORMAT_R8_SINT,
ISL_FORMAT_R8G8_SINT,
ISL_FORMAT_R8G8B8_SINT,
ISL_FORMAT_R8G8B8A8_SINT
};
static const GLuint byte_types_norm[5] = {
0,
ISL_FORMAT_R8_SNORM,
ISL_FORMAT_R8G8_SNORM,
ISL_FORMAT_R8G8B8_SNORM,
ISL_FORMAT_R8G8B8A8_SNORM
};
static const GLuint byte_types_scale[5] = {
0,
ISL_FORMAT_R8_SSCALED,
ISL_FORMAT_R8G8_SSCALED,
ISL_FORMAT_R8G8B8_SSCALED,
ISL_FORMAT_R8G8B8A8_SSCALED
};
static GLuint
double_types(struct brw_context *brw,
int size,
GLboolean doubles)
{
/* From the BDW PRM, Volume 2d, page 588 (VERTEX_ELEMENT_STATE):
* "When SourceElementFormat is set to one of the *64*_PASSTHRU formats,
* 64-bit components are stored in the URB without any conversion."
* Also included on BDW PRM, Volume 7, page 470, table "Source Element
* Formats Supported in VF Unit"
*
* Previous PRMs don't include those references, so for gen7 we can't use
* PASSTHRU formats directly. But in any case, we prefer to return passthru
* even in that case, because that reflects what we want to achieve, even
* if we would need to workaround on gen < 8.
*/
return (doubles
? double_types_passthru[size]
: double_types_float[size]);
}
/**
* Given vertex array type/size/format/normalized info, return
* the appopriate hardware surface type.
* Format will be GL_RGBA or possibly GL_BGRA for GLubyte[4] color arrays.
*/
unsigned
brw_get_vertex_surface_type(struct brw_context *brw,
const struct gl_vertex_array *glarray)
{
int size = glarray->Size;
const struct gen_device_info *devinfo = &brw->screen->devinfo;
const bool is_ivybridge_or_older =
devinfo->gen <= 7 && !devinfo->is_baytrail && !devinfo->is_haswell;
if (unlikely(INTEL_DEBUG & DEBUG_VERTS))
fprintf(stderr, "type %s size %d normalized %d\n",
_mesa_enum_to_string(glarray->Type),
glarray->Size, glarray->Normalized);
if (glarray->Integer) {
assert(glarray->Format == GL_RGBA); /* sanity check */
switch (glarray->Type) {
case GL_INT: return int_types_direct[size];
case GL_SHORT:
if (is_ivybridge_or_older && size == 3)
return short_types_direct[4];
else
return short_types_direct[size];
case GL_BYTE:
if (is_ivybridge_or_older && size == 3)
return byte_types_direct[4];
else
return byte_types_direct[size];
case GL_UNSIGNED_INT: return uint_types_direct[size];
case GL_UNSIGNED_SHORT:
if (is_ivybridge_or_older && size == 3)
return ushort_types_direct[4];
else
return ushort_types_direct[size];
case GL_UNSIGNED_BYTE:
if (is_ivybridge_or_older && size == 3)
return ubyte_types_direct[4];
else
return ubyte_types_direct[size];
default: unreachable("not reached");
}
} else if (glarray->Type == GL_UNSIGNED_INT_10F_11F_11F_REV) {
return ISL_FORMAT_R11G11B10_FLOAT;
} else if (glarray->Normalized) {
switch (glarray->Type) {
case GL_DOUBLE: return double_types(brw, size, glarray->Doubles);
case GL_FLOAT: return float_types[size];
case GL_HALF_FLOAT:
case GL_HALF_FLOAT_OES:
if (devinfo->gen < 6 && size == 3)
return half_float_types[4];
else
return half_float_types[size];
case GL_INT: return int_types_norm[size];
case GL_SHORT: return short_types_norm[size];
case GL_BYTE: return byte_types_norm[size];
case GL_UNSIGNED_INT: return uint_types_norm[size];
case GL_UNSIGNED_SHORT: return ushort_types_norm[size];
case GL_UNSIGNED_BYTE:
if (glarray->Format == GL_BGRA) {
/* See GL_EXT_vertex_array_bgra */
assert(size == 4);
return ISL_FORMAT_B8G8R8A8_UNORM;
}
else {
return ubyte_types_norm[size];
}
case GL_FIXED:
if (devinfo->gen >= 8 || devinfo->is_haswell)
return fixed_point_types[size];
/* This produces GL_FIXED inputs as values between INT32_MIN and
* INT32_MAX, which will be scaled down by 1/65536 by the VS.
*/
return int_types_scale[size];
/* See GL_ARB_vertex_type_2_10_10_10_rev.
* W/A: Pre-Haswell, the hardware doesn't really support the formats we'd
* like to use here, so upload everything as UINT and fix
* it in the shader
*/
case GL_INT_2_10_10_10_REV:
assert(size == 4);
if (devinfo->gen >= 8 || devinfo->is_haswell) {
return glarray->Format == GL_BGRA
? ISL_FORMAT_B10G10R10A2_SNORM
: ISL_FORMAT_R10G10B10A2_SNORM;
}
return ISL_FORMAT_R10G10B10A2_UINT;
case GL_UNSIGNED_INT_2_10_10_10_REV:
assert(size == 4);
if (devinfo->gen >= 8 || devinfo->is_haswell) {
return glarray->Format == GL_BGRA
? ISL_FORMAT_B10G10R10A2_UNORM
: ISL_FORMAT_R10G10B10A2_UNORM;
}
return ISL_FORMAT_R10G10B10A2_UINT;
default: unreachable("not reached");
}
}
else {
/* See GL_ARB_vertex_type_2_10_10_10_rev.
* W/A: the hardware doesn't really support the formats we'd
* like to use here, so upload everything as UINT and fix
* it in the shader
*/
if (glarray->Type == GL_INT_2_10_10_10_REV) {
assert(size == 4);
if (devinfo->gen >= 8 || devinfo->is_haswell) {
return glarray->Format == GL_BGRA
? ISL_FORMAT_B10G10R10A2_SSCALED
: ISL_FORMAT_R10G10B10A2_SSCALED;
}
return ISL_FORMAT_R10G10B10A2_UINT;
} else if (glarray->Type == GL_UNSIGNED_INT_2_10_10_10_REV) {
assert(size == 4);
if (devinfo->gen >= 8 || devinfo->is_haswell) {
return glarray->Format == GL_BGRA
? ISL_FORMAT_B10G10R10A2_USCALED
: ISL_FORMAT_R10G10B10A2_USCALED;
}
return ISL_FORMAT_R10G10B10A2_UINT;
}
assert(glarray->Format == GL_RGBA); /* sanity check */
switch (glarray->Type) {
case GL_DOUBLE: return double_types(brw, size, glarray->Doubles);
case GL_FLOAT: return float_types[size];
case GL_HALF_FLOAT:
case GL_HALF_FLOAT_OES:
if (devinfo->gen < 6 && size == 3)
return half_float_types[4];
else
return half_float_types[size];
case GL_INT: return int_types_scale[size];
case GL_SHORT: return short_types_scale[size];
case GL_BYTE: return byte_types_scale[size];
case GL_UNSIGNED_INT: return uint_types_scale[size];
case GL_UNSIGNED_SHORT: return ushort_types_scale[size];
case GL_UNSIGNED_BYTE: return ubyte_types_scale[size];
case GL_FIXED:
if (devinfo->gen >= 8 || devinfo->is_haswell)
return fixed_point_types[size];
/* This produces GL_FIXED inputs as values between INT32_MIN and
* INT32_MAX, which will be scaled down by 1/65536 by the VS.
*/
return int_types_scale[size];
default: unreachable("not reached");
}
}
}
static void
copy_array_to_vbo_array(struct brw_context *brw,
struct brw_vertex_element *element,
int min, int max,
struct brw_vertex_buffer *buffer,
GLuint dst_stride)
{
const int src_stride = element->glarray->StrideB;
/* If the source stride is zero, we just want to upload the current
* attribute once and set the buffer's stride to 0. There's no need
* to replicate it out.
*/
if (src_stride == 0) {
intel_upload_data(brw, element->glarray->Ptr,
element->glarray->_ElementSize,
element->glarray->_ElementSize,
&buffer->bo, &buffer->offset);
buffer->stride = 0;
buffer->size = element->glarray->_ElementSize;
return;
}
const unsigned char *src = element->glarray->Ptr + min * src_stride;
int count = max - min + 1;
GLuint size = count * dst_stride;
uint8_t *dst = intel_upload_space(brw, size, dst_stride,
&buffer->bo, &buffer->offset);
/* The GL 4.5 spec says:
* "If any enabled array’s buffer binding is zero when DrawArrays or
* one of the other drawing commands defined in section 10.4 is called,
* the result is undefined."
*
* In this case, let's the dst with undefined values
*/
if (src != NULL) {
if (dst_stride == src_stride) {
memcpy(dst, src, size);
} else {
while (count--) {
memcpy(dst, src, dst_stride);
src += src_stride;
dst += dst_stride;
}
}
}
buffer->stride = dst_stride;
buffer->size = size;
}
void
brw_prepare_vertices(struct brw_context *brw)
{
const struct gen_device_info *devinfo = &brw->screen->devinfo;
struct gl_context *ctx = &brw->ctx;
/* BRW_NEW_VS_PROG_DATA */
const struct brw_vs_prog_data *vs_prog_data =
brw_vs_prog_data(brw->vs.base.prog_data);
GLbitfield64 vs_inputs = vs_prog_data->inputs_read;
const unsigned char *ptr = NULL;
GLuint interleaved = 0;
unsigned int min_index = brw->vb.min_index + brw->basevertex;
unsigned int max_index = brw->vb.max_index + brw->basevertex;
unsigned i;
int delta, j;
struct brw_vertex_element *upload[VERT_ATTRIB_MAX];
GLuint nr_uploads = 0;
/* _NEW_POLYGON
*
* On gen6+, edge flags don't end up in the VUE (either in or out of the
* VS). Instead, they're uploaded as the last vertex element, and the data
* is passed sideband through the fixed function units. So, we need to
* prepare the vertex buffer for it, but it's not present in inputs_read.
*/
if (devinfo->gen >= 6 && (ctx->Polygon.FrontMode != GL_FILL ||
ctx->Polygon.BackMode != GL_FILL)) {
vs_inputs |= VERT_BIT_EDGEFLAG;
}
if (0)
fprintf(stderr, "%s %d..%d\n", __func__, min_index, max_index);
/* Accumulate the list of enabled arrays. */
brw->vb.nr_enabled = 0;
while (vs_inputs) {
GLuint first = ffsll(vs_inputs) - 1;
assert (first < 64);
GLuint index =
first - DIV_ROUND_UP(_mesa_bitcount_64(vs_prog_data->double_inputs_read &
BITFIELD64_MASK(first)), 2);
struct brw_vertex_element *input = &brw->vb.inputs[index];
input->is_dual_slot = (vs_prog_data->double_inputs_read & BITFIELD64_BIT(first)) != 0;
vs_inputs &= ~BITFIELD64_BIT(first);
if (input->is_dual_slot)
vs_inputs &= ~BITFIELD64_BIT(first + 1);
brw->vb.enabled[brw->vb.nr_enabled++] = input;
}
if (brw->vb.nr_enabled == 0)
return;
if (brw->vb.nr_buffers)
return;
/* The range of data in a given buffer represented as [min, max) */
struct intel_buffer_object *enabled_buffer[VERT_ATTRIB_MAX];
uint32_t buffer_range_start[VERT_ATTRIB_MAX];
uint32_t buffer_range_end[VERT_ATTRIB_MAX];
for (i = j = 0; i < brw->vb.nr_enabled; i++) {
struct brw_vertex_element *input = brw->vb.enabled[i];
const struct gl_vertex_array *glarray = input->glarray;
if (_mesa_is_bufferobj(glarray->BufferObj)) {
struct intel_buffer_object *intel_buffer =
intel_buffer_object(glarray->BufferObj);
const uint32_t offset = (uintptr_t)glarray->Ptr;
/* Start with the worst case */
uint32_t start = 0;
uint32_t range = intel_buffer->Base.Size;
if (glarray->InstanceDivisor) {
if (brw->num_instances) {
start = offset + glarray->StrideB * brw->baseinstance;
range = (glarray->StrideB * ((brw->num_instances - 1) /
glarray->InstanceDivisor) +
glarray->_ElementSize);
}
} else {
if (brw->vb.index_bounds_valid) {
start = offset + min_index * glarray->StrideB;
range = (glarray->StrideB * (max_index - min_index) +
glarray->_ElementSize);
}
}
/* If we have a VB set to be uploaded for this buffer object
* already, reuse that VB state so that we emit fewer
* relocations.
*/
unsigned k;
for (k = 0; k < i; k++) {
const struct gl_vertex_array *other = brw->vb.enabled[k]->glarray;
if (glarray->BufferObj == other->BufferObj &&
glarray->StrideB == other->StrideB &&
glarray->InstanceDivisor == other->InstanceDivisor &&
(uintptr_t)(glarray->Ptr - other->Ptr) < glarray->StrideB)
{
input->buffer = brw->vb.enabled[k]->buffer;
input->offset = glarray->Ptr - other->Ptr;
buffer_range_start[input->buffer] =
MIN2(buffer_range_start[input->buffer], start);
buffer_range_end[input->buffer] =
MAX2(buffer_range_end[input->buffer], start + range);
break;
}
}
if (k == i) {
struct brw_vertex_buffer *buffer = &brw->vb.buffers[j];
/* Named buffer object: Just reference its contents directly. */
buffer->offset = offset;
buffer->stride = glarray->StrideB;
buffer->step_rate = glarray->InstanceDivisor;
buffer->size = glarray->BufferObj->Size - offset;
enabled_buffer[j] = intel_buffer;
buffer_range_start[j] = start;
buffer_range_end[j] = start + range;
input->buffer = j++;
input->offset = 0;
}
} else {
/* Queue the buffer object up to be uploaded in the next pass,
* when we've decided if we're doing interleaved or not.
*/
if (nr_uploads == 0) {
interleaved = glarray->StrideB;
ptr = glarray->Ptr;
}
else if (interleaved != glarray->StrideB ||
glarray->InstanceDivisor != 0 ||
glarray->Ptr < ptr ||
(uintptr_t)(glarray->Ptr - ptr) + glarray->_ElementSize > interleaved)
{
/* If our stride is different from the first attribute's stride,
* or if we are using an instance divisor or if the first
* attribute's stride didn't cover our element, disable the
* interleaved upload optimization. The second case can most
* commonly occur in cases where there is a single vertex and, for
* example, the data is stored on the application's stack.
*
* NOTE: This will also disable the optimization in cases where
* the data is in a different order than the array indices.
* Something like:
*
* float data[...];
* glVertexAttribPointer(0, 4, GL_FLOAT, 32, &data[4]);
* glVertexAttribPointer(1, 4, GL_FLOAT, 32, &data[0]);
*/
interleaved = 0;
}
upload[nr_uploads++] = input;
}
}
/* Now that we've set up all of the buffers, we walk through and reference
* each of them. We do this late so that we get the right size in each
* buffer and don't reference too little data.
*/
for (i = 0; i < j; i++) {
struct brw_vertex_buffer *buffer = &brw->vb.buffers[i];
if (buffer->bo)
continue;
const uint32_t start = buffer_range_start[i];
const uint32_t range = buffer_range_end[i] - buffer_range_start[i];
buffer->bo = intel_bufferobj_buffer(brw, enabled_buffer[i], start,
range, false);
brw_bo_reference(buffer->bo);
}
/* If we need to upload all the arrays, then we can trim those arrays to
* only the used elements [min_index, max_index] so long as we adjust all
* the values used in the 3DPRIMITIVE i.e. by setting the vertex bias.
*/
brw->vb.start_vertex_bias = 0;
delta = min_index;
if (nr_uploads == brw->vb.nr_enabled) {
brw->vb.start_vertex_bias = -delta;
delta = 0;
}
/* Handle any arrays to be uploaded. */
if (nr_uploads > 1) {
if (interleaved) {
struct brw_vertex_buffer *buffer = &brw->vb.buffers[j];
/* All uploads are interleaved, so upload the arrays together as
* interleaved. First, upload the contents and set up upload[0].
*/
copy_array_to_vbo_array(brw, upload[0], min_index, max_index,
buffer, interleaved);
buffer->offset -= delta * interleaved;
buffer->size += delta * interleaved;
buffer->step_rate = 0;
for (i = 0; i < nr_uploads; i++) {
/* Then, just point upload[i] at upload[0]'s buffer. */
upload[i]->offset =
((const unsigned char *)upload[i]->glarray->Ptr - ptr);
upload[i]->buffer = j;
}
j++;
nr_uploads = 0;
}
}
/* Upload non-interleaved arrays */
for (i = 0; i < nr_uploads; i++) {
struct brw_vertex_buffer *buffer = &brw->vb.buffers[j];
if (upload[i]->glarray->InstanceDivisor == 0) {
copy_array_to_vbo_array(brw, upload[i], min_index, max_index,
buffer, upload[i]->glarray->_ElementSize);
} else {
/* This is an instanced attribute, since its InstanceDivisor
* is not zero. Therefore, its data will be stepped after the
* instanced draw has been run InstanceDivisor times.
*/
uint32_t instanced_attr_max_index =
(brw->num_instances - 1) / upload[i]->glarray->InstanceDivisor;
copy_array_to_vbo_array(brw, upload[i], 0, instanced_attr_max_index,
buffer, upload[i]->glarray->_ElementSize);
}
buffer->offset -= delta * buffer->stride;
buffer->size += delta * buffer->stride;
buffer->step_rate = upload[i]->glarray->InstanceDivisor;
upload[i]->buffer = j++;
upload[i]->offset = 0;
}
brw->vb.nr_buffers = j;
}
void
brw_prepare_shader_draw_parameters(struct brw_context *brw)
{
const struct brw_vs_prog_data *vs_prog_data =
brw_vs_prog_data(brw->vs.base.prog_data);
/* For non-indirect draws, upload gl_BaseVertex. */
if ((vs_prog_data->uses_basevertex || vs_prog_data->uses_baseinstance) &&
brw->draw.draw_params_bo == NULL) {
intel_upload_data(brw, &brw->draw.params, sizeof(brw->draw.params), 4,
&brw->draw.draw_params_bo,
&brw->draw.draw_params_offset);
}
if (vs_prog_data->uses_drawid) {
intel_upload_data(brw, &brw->draw.gl_drawid, sizeof(brw->draw.gl_drawid), 4,
&brw->draw.draw_id_bo,
&brw->draw.draw_id_offset);
}
}
static void
brw_upload_indices(struct brw_context *brw)
{
const struct _mesa_index_buffer *index_buffer = brw->ib.ib;
GLuint ib_size;
struct brw_bo *old_bo = brw->ib.bo;
struct gl_buffer_object *bufferobj;
GLuint offset;
GLuint ib_type_size;
if (index_buffer == NULL)
return;
ib_type_size = index_buffer->index_size;
ib_size = index_buffer->count ? ib_type_size * index_buffer->count :
index_buffer->obj->Size;
bufferobj = index_buffer->obj;
/* Turn into a proper VBO:
*/
if (!_mesa_is_bufferobj(bufferobj)) {
/* Get new bufferobj, offset:
*/
intel_upload_data(brw, index_buffer->ptr, ib_size, ib_type_size,
&brw->ib.bo, &offset);
brw->ib.size = brw->ib.bo->size;
} else {
offset = (GLuint) (unsigned long) index_buffer->ptr;
struct brw_bo *bo =
intel_bufferobj_buffer(brw, intel_buffer_object(bufferobj),
offset, ib_size, false);
if (bo != brw->ib.bo) {
brw_bo_unreference(brw->ib.bo);
brw->ib.bo = bo;
brw->ib.size = bufferobj->Size;
brw_bo_reference(bo);
}
}
/* Use 3DPRIMITIVE's start_vertex_offset to avoid re-uploading
* the index buffer state when we're just moving the start index
* of our drawing.
*/
brw->ib.start_vertex_offset = offset / ib_type_size;
if (brw->ib.bo != old_bo)
brw->ctx.NewDriverState |= BRW_NEW_INDEX_BUFFER;
if (index_buffer->index_size != brw->ib.index_size) {
brw->ib.index_size = index_buffer->index_size;
brw->ctx.NewDriverState |= BRW_NEW_INDEX_BUFFER;
}
}
const struct brw_tracked_state brw_indices = {
.dirty = {
.mesa = 0,
.brw = BRW_NEW_BLORP |
BRW_NEW_INDICES,
},
.emit = brw_upload_indices,
};