/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 TUNGSTEN GRAPHICS 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/glheader.h"
#include "main/bufferobj.h"
#include "main/context.h"
#include "main/enums.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 GLuint double_types[5] = {
0,
BRW_SURFACEFORMAT_R64_FLOAT,
BRW_SURFACEFORMAT_R64G64_FLOAT,
BRW_SURFACEFORMAT_R64G64B64_FLOAT,
BRW_SURFACEFORMAT_R64G64B64A64_FLOAT
};
static GLuint float_types[5] = {
0,
BRW_SURFACEFORMAT_R32_FLOAT,
BRW_SURFACEFORMAT_R32G32_FLOAT,
BRW_SURFACEFORMAT_R32G32B32_FLOAT,
BRW_SURFACEFORMAT_R32G32B32A32_FLOAT
};
static GLuint half_float_types[5] = {
0,
BRW_SURFACEFORMAT_R16_FLOAT,
BRW_SURFACEFORMAT_R16G16_FLOAT,
0, /* can't seem to render this one */
BRW_SURFACEFORMAT_R16G16B16A16_FLOAT
};
static GLuint uint_types_norm[5] = {
0,
BRW_SURFACEFORMAT_R32_UNORM,
BRW_SURFACEFORMAT_R32G32_UNORM,
BRW_SURFACEFORMAT_R32G32B32_UNORM,
BRW_SURFACEFORMAT_R32G32B32A32_UNORM
};
static GLuint uint_types_scale[5] = {
0,
BRW_SURFACEFORMAT_R32_USCALED,
BRW_SURFACEFORMAT_R32G32_USCALED,
BRW_SURFACEFORMAT_R32G32B32_USCALED,
BRW_SURFACEFORMAT_R32G32B32A32_USCALED
};
static GLuint int_types_norm[5] = {
0,
BRW_SURFACEFORMAT_R32_SNORM,
BRW_SURFACEFORMAT_R32G32_SNORM,
BRW_SURFACEFORMAT_R32G32B32_SNORM,
BRW_SURFACEFORMAT_R32G32B32A32_SNORM
};
static GLuint int_types_scale[5] = {
0,
BRW_SURFACEFORMAT_R32_SSCALED,
BRW_SURFACEFORMAT_R32G32_SSCALED,
BRW_SURFACEFORMAT_R32G32B32_SSCALED,
BRW_SURFACEFORMAT_R32G32B32A32_SSCALED
};
static GLuint ushort_types_norm[5] = {
0,
BRW_SURFACEFORMAT_R16_UNORM,
BRW_SURFACEFORMAT_R16G16_UNORM,
BRW_SURFACEFORMAT_R16G16B16_UNORM,
BRW_SURFACEFORMAT_R16G16B16A16_UNORM
};
static GLuint ushort_types_scale[5] = {
0,
BRW_SURFACEFORMAT_R16_USCALED,
BRW_SURFACEFORMAT_R16G16_USCALED,
BRW_SURFACEFORMAT_R16G16B16_USCALED,
BRW_SURFACEFORMAT_R16G16B16A16_USCALED
};
static GLuint short_types_norm[5] = {
0,
BRW_SURFACEFORMAT_R16_SNORM,
BRW_SURFACEFORMAT_R16G16_SNORM,
BRW_SURFACEFORMAT_R16G16B16_SNORM,
BRW_SURFACEFORMAT_R16G16B16A16_SNORM
};
static GLuint short_types_scale[5] = {
0,
BRW_SURFACEFORMAT_R16_SSCALED,
BRW_SURFACEFORMAT_R16G16_SSCALED,
BRW_SURFACEFORMAT_R16G16B16_SSCALED,
BRW_SURFACEFORMAT_R16G16B16A16_SSCALED
};
static GLuint ubyte_types_norm[5] = {
0,
BRW_SURFACEFORMAT_R8_UNORM,
BRW_SURFACEFORMAT_R8G8_UNORM,
BRW_SURFACEFORMAT_R8G8B8_UNORM,
BRW_SURFACEFORMAT_R8G8B8A8_UNORM
};
static GLuint ubyte_types_scale[5] = {
0,
BRW_SURFACEFORMAT_R8_USCALED,
BRW_SURFACEFORMAT_R8G8_USCALED,
BRW_SURFACEFORMAT_R8G8B8_USCALED,
BRW_SURFACEFORMAT_R8G8B8A8_USCALED
};
static GLuint byte_types_norm[5] = {
0,
BRW_SURFACEFORMAT_R8_SNORM,
BRW_SURFACEFORMAT_R8G8_SNORM,
BRW_SURFACEFORMAT_R8G8B8_SNORM,
BRW_SURFACEFORMAT_R8G8B8A8_SNORM
};
static GLuint byte_types_scale[5] = {
0,
BRW_SURFACEFORMAT_R8_SSCALED,
BRW_SURFACEFORMAT_R8G8_SSCALED,
BRW_SURFACEFORMAT_R8G8B8_SSCALED,
BRW_SURFACEFORMAT_R8G8B8A8_SSCALED
};
/**
* 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.
*/
static GLuint get_surface_type( GLenum type, GLuint size,
GLenum format, GLboolean normalized )
{
if (INTEL_DEBUG & DEBUG_VERTS)
_mesa_printf("type %s size %d normalized %d\n",
_mesa_lookup_enum_by_nr(type), size, normalized);
if (normalized) {
switch (type) {
case GL_DOUBLE: return double_types[size];
case GL_FLOAT: return float_types[size];
case GL_HALF_FLOAT: 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 (format == GL_BGRA) {
/* See GL_EXT_vertex_array_bgra */
assert(size == 4);
return BRW_SURFACEFORMAT_B8G8R8A8_UNORM;
}
else {
return ubyte_types_norm[size];
}
default: assert(0); return 0;
}
}
else {
assert(format == GL_RGBA); /* sanity check */
switch (type) {
case GL_DOUBLE: return double_types[size];
case GL_FLOAT: return float_types[size];
case GL_HALF_FLOAT: 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];
default: assert(0); return 0;
}
}
}
static GLuint get_size( GLenum type )
{
switch (type) {
case GL_DOUBLE: return sizeof(GLdouble);
case GL_FLOAT: return sizeof(GLfloat);
case GL_HALF_FLOAT: return sizeof(GLhalfARB);
case GL_INT: return sizeof(GLint);
case GL_SHORT: return sizeof(GLshort);
case GL_BYTE: return sizeof(GLbyte);
case GL_UNSIGNED_INT: return sizeof(GLuint);
case GL_UNSIGNED_SHORT: return sizeof(GLushort);
case GL_UNSIGNED_BYTE: return sizeof(GLubyte);
default: return 0;
}
}
static GLuint get_index_type(GLenum type)
{
switch (type) {
case GL_UNSIGNED_BYTE: return BRW_INDEX_BYTE;
case GL_UNSIGNED_SHORT: return BRW_INDEX_WORD;
case GL_UNSIGNED_INT: return BRW_INDEX_DWORD;
default: assert(0); return 0;
}
}
static void wrap_buffers( struct brw_context *brw,
GLuint size )
{
if (size < BRW_UPLOAD_INIT_SIZE)
size = BRW_UPLOAD_INIT_SIZE;
brw->vb.upload.offset = 0;
if (brw->vb.upload.bo != NULL)
dri_bo_unreference(brw->vb.upload.bo);
brw->vb.upload.bo = dri_bo_alloc(brw->intel.bufmgr, "temporary VBO",
size, 1);
}
static void get_space( struct brw_context *brw,
GLuint size,
dri_bo **bo_return,
GLuint *offset_return )
{
size = ALIGN(size, 64);
if (brw->vb.upload.bo == NULL ||
brw->vb.upload.offset + size > brw->vb.upload.bo->size) {
wrap_buffers(brw, size);
}
assert(*bo_return == NULL);
dri_bo_reference(brw->vb.upload.bo);
*bo_return = brw->vb.upload.bo;
*offset_return = brw->vb.upload.offset;
brw->vb.upload.offset += size;
}
static void
copy_array_to_vbo_array( struct brw_context *brw,
struct brw_vertex_element *element,
GLuint dst_stride)
{
struct intel_context *intel = &brw->intel;
GLuint size = element->count * dst_stride;
get_space(brw, size, &element->bo, &element->offset);
if (element->glarray->StrideB == 0) {
assert(element->count == 1);
element->stride = 0;
} else {
element->stride = dst_stride;
}
if (dst_stride == element->glarray->StrideB) {
if (intel->intelScreen->kernel_exec_fencing) {
drm_intel_gem_bo_map_gtt(element->bo);
memcpy((char *)element->bo->virtual + element->offset,
element->glarray->Ptr, size);
drm_intel_gem_bo_unmap_gtt(element->bo);
} else {
dri_bo_subdata(element->bo,
element->offset,
size,
element->glarray->Ptr);
}
} else {
char *dest;
const unsigned char *src = element->glarray->Ptr;
int i;
if (intel->intelScreen->kernel_exec_fencing) {
drm_intel_gem_bo_map_gtt(element->bo);
dest = element->bo->virtual;
dest += element->offset;
for (i = 0; i < element->count; i++) {
memcpy(dest, src, dst_stride);
src += element->glarray->StrideB;
dest += dst_stride;
}
drm_intel_gem_bo_unmap_gtt(element->bo);
} else {
void *data;
data = _mesa_malloc(dst_stride * element->count);
dest = data;
for (i = 0; i < element->count; i++) {
memcpy(dest, src, dst_stride);
src += element->glarray->StrideB;
dest += dst_stride;
}
dri_bo_subdata(element->bo,
element->offset,
size,
data);
_mesa_free(data);
}
}
}
static void brw_prepare_vertices(struct brw_context *brw)
{
GLcontext *ctx = &brw->intel.ctx;
struct intel_context *intel = intel_context(ctx);
GLbitfield vs_inputs = brw->vs.prog_data->inputs_read;
GLuint i;
const unsigned char *ptr = NULL;
GLuint interleave = 0;
unsigned int min_index = brw->vb.min_index;
unsigned int max_index = brw->vb.max_index;
struct brw_vertex_element *upload[VERT_ATTRIB_MAX];
GLuint nr_uploads = 0;
/* First build an array of pointers to ve's in vb.inputs_read
*/
if (0)
_mesa_printf("%s %d..%d\n", __FUNCTION__, min_index, max_index);
/* Accumulate the list of enabled arrays. */
brw->vb.nr_enabled = 0;
while (vs_inputs) {
GLuint i = _mesa_ffsll(vs_inputs) - 1;
struct brw_vertex_element *input = &brw->vb.inputs[i];
vs_inputs &= ~(1 << i);
brw->vb.enabled[brw->vb.nr_enabled++] = input;
}
/* XXX: In the rare cases where this happens we fallback all
* the way to software rasterization, although a tnl fallback
* would be sufficient. I don't know of *any* real world
* cases with > 17 vertex attributes enabled, so it probably
* isn't an issue at this point.
*/
if (brw->vb.nr_enabled >= BRW_VEP_MAX) {
intel->Fallback = GL_TRUE; /* boolean, not bitfield */
return;
}
for (i = 0; i < brw->vb.nr_enabled; i++) {
struct brw_vertex_element *input = brw->vb.enabled[i];
input->element_size = get_size(input->glarray->Type) * input->glarray->Size;
if (_mesa_is_bufferobj(input->glarray->BufferObj)) {
struct intel_buffer_object *intel_buffer =
intel_buffer_object(input->glarray->BufferObj);
/* Named buffer object: Just reference its contents directly. */
dri_bo_unreference(input->bo);
input->bo = intel_bufferobj_buffer(intel, intel_buffer,
INTEL_READ);
dri_bo_reference(input->bo);
input->offset = (unsigned long)input->glarray->Ptr;
input->stride = input->glarray->StrideB;
input->count = input->glarray->_MaxElement;
/* This is a common place to reach if the user mistakenly supplies
* a pointer in place of a VBO offset. If we just let it go through,
* we may end up dereferencing a pointer beyond the bounds of the
* GTT. We would hope that the VBO's max_index would save us, but
* Mesa appears to hand us min/max values not clipped to the
* array object's _MaxElement, and _MaxElement frequently appears
* to be wrong anyway.
*
* The VBO spec allows application termination in this case, and it's
* probably a service to the poor programmer to do so rather than
* trying to just not render.
*/
assert(input->offset < input->bo->size);
} else {
input->count = input->glarray->StrideB ? max_index + 1 - min_index : 1;
if (input->bo != NULL) {
/* Already-uploaded vertex data is present from a previous
* prepare_vertices, but we had to re-validate state due to
* check_aperture failing and a new batch being produced.
*/
continue;
}
/* Queue the buffer object up to be uploaded in the next pass,
* when we've decided if we're doing interleaved or not.
*/
if (input->attrib == VERT_ATTRIB_POS) {
/* Position array not properly enabled:
*/
if (input->glarray->StrideB == 0) {
intel->Fallback = GL_TRUE; /* boolean, not bitfield */
return;
}
interleave = input->glarray->StrideB;
ptr = input->glarray->Ptr;
}
else if (interleave != input->glarray->StrideB ||
(const unsigned char *)input->glarray->Ptr - ptr < 0 ||
(const unsigned char *)input->glarray->Ptr - ptr > interleave)
{
interleave = 0;
}
upload[nr_uploads++] = input;
/* We rebase drawing to start at element zero only when
* varyings are not in vbos, which means we can end up
* uploading non-varying arrays (stride != 0) when min_index
* is zero. This doesn't matter as the amount to upload is
* the same for these arrays whether the draw call is rebased
* or not - we just have to upload the one element.
*/
assert(min_index == 0 || input->glarray->StrideB == 0);
}
}
/* Handle any arrays to be uploaded. */
if (nr_uploads > 1 && interleave && interleave <= 256) {
/* 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], interleave);
for (i = 1; i < nr_uploads; i++) {
/* Then, just point upload[i] at upload[0]'s buffer. */
upload[i]->stride = interleave;
upload[i]->offset = upload[0]->offset +
((const unsigned char *)upload[i]->glarray->Ptr - ptr);
upload[i]->bo = upload[0]->bo;
dri_bo_reference(upload[i]->bo);
}
}
else {
/* Upload non-interleaved arrays */
for (i = 0; i < nr_uploads; i++) {
copy_array_to_vbo_array(brw, upload[i], upload[i]->element_size);
}
}
brw_prepare_query_begin(brw);
for (i = 0; i < brw->vb.nr_enabled; i++) {
struct brw_vertex_element *input = brw->vb.enabled[i];
brw_add_validated_bo(brw, input->bo);
}
}
static void brw_emit_vertices(struct brw_context *brw)
{
GLcontext *ctx = &brw->intel.ctx;
struct intel_context *intel = intel_context(ctx);
GLuint i;
brw_emit_query_begin(brw);
/* If the VS doesn't read any inputs (calculating vertex position from
* a state variable for some reason, for example), emit a single pad
* VERTEX_ELEMENT struct and bail.
*
* The stale VB state stays in place, but they don't do anything unless
* a VE loads from them.
*/
if (brw->vb.nr_enabled == 0) {
BEGIN_BATCH(3);
OUT_BATCH((CMD_VERTEX_ELEMENT << 16) | 1);
OUT_BATCH((0 << BRW_VE0_INDEX_SHIFT) |
BRW_VE0_VALID |
(BRW_SURFACEFORMAT_R32G32B32A32_FLOAT << BRW_VE0_FORMAT_SHIFT) |
(0 << BRW_VE0_SRC_OFFSET_SHIFT));
OUT_BATCH((BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_0_SHIFT) |
(BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_1_SHIFT) |
(BRW_VE1_COMPONENT_STORE_0 << BRW_VE1_COMPONENT_2_SHIFT) |
(BRW_VE1_COMPONENT_STORE_1_FLT << BRW_VE1_COMPONENT_3_SHIFT));
ADVANCE_BATCH();
return;
}
/* Now emit VB and VEP state packets.
*
* This still defines a hardware VB for each input, even if they
* are interleaved or from the same VBO. TBD if this makes a
* performance difference.
*/
BEGIN_BATCH(1 + brw->vb.nr_enabled * 4);
OUT_BATCH((CMD_VERTEX_BUFFER << 16) |
((1 + brw->vb.nr_enabled * 4) - 2));
for (i = 0; i < brw->vb.nr_enabled; i++) {
struct brw_vertex_element *input = brw->vb.enabled[i];
OUT_BATCH((i << BRW_VB0_INDEX_SHIFT) |
BRW_VB0_ACCESS_VERTEXDATA |
(input->stride << BRW_VB0_PITCH_SHIFT));
OUT_RELOC(input->bo,
I915_GEM_DOMAIN_VERTEX, 0,
input->offset);
if (intel->is_ironlake) {
OUT_RELOC(input->bo,
I915_GEM_DOMAIN_VERTEX, 0,
input->bo->size - 1);
} else
OUT_BATCH(input->stride ? input->count : 0);
OUT_BATCH(0); /* Instance data step rate */
}
ADVANCE_BATCH();
BEGIN_BATCH(1 + brw->vb.nr_enabled * 2);
OUT_BATCH((CMD_VERTEX_ELEMENT << 16) | ((1 + brw->vb.nr_enabled * 2) - 2));
for (i = 0; i < brw->vb.nr_enabled; i++) {
struct brw_vertex_element *input = brw->vb.enabled[i];
uint32_t format = get_surface_type(input->glarray->Type,
input->glarray->Size,
input->glarray->Format,
input->glarray->Normalized);
uint32_t comp0 = BRW_VE1_COMPONENT_STORE_SRC;
uint32_t comp1 = BRW_VE1_COMPONENT_STORE_SRC;
uint32_t comp2 = BRW_VE1_COMPONENT_STORE_SRC;
uint32_t comp3 = BRW_VE1_COMPONENT_STORE_SRC;
switch (input->glarray->Size) {
case 0: comp0 = BRW_VE1_COMPONENT_STORE_0;
case 1: comp1 = BRW_VE1_COMPONENT_STORE_0;
case 2: comp2 = BRW_VE1_COMPONENT_STORE_0;
case 3: comp3 = BRW_VE1_COMPONENT_STORE_1_FLT;
break;
}
OUT_BATCH((i << BRW_VE0_INDEX_SHIFT) |
BRW_VE0_VALID |
(format << BRW_VE0_FORMAT_SHIFT) |
(0 << BRW_VE0_SRC_OFFSET_SHIFT));
if (intel->is_ironlake)
OUT_BATCH((comp0 << BRW_VE1_COMPONENT_0_SHIFT) |
(comp1 << BRW_VE1_COMPONENT_1_SHIFT) |
(comp2 << BRW_VE1_COMPONENT_2_SHIFT) |
(comp3 << BRW_VE1_COMPONENT_3_SHIFT));
else
OUT_BATCH((comp0 << BRW_VE1_COMPONENT_0_SHIFT) |
(comp1 << BRW_VE1_COMPONENT_1_SHIFT) |
(comp2 << BRW_VE1_COMPONENT_2_SHIFT) |
(comp3 << BRW_VE1_COMPONENT_3_SHIFT) |
((i * 4) << BRW_VE1_DST_OFFSET_SHIFT));
}
ADVANCE_BATCH();
}
const struct brw_tracked_state brw_vertices = {
.dirty = {
.mesa = 0,
.brw = BRW_NEW_BATCH | BRW_NEW_VERTICES,
.cache = 0,
},
.prepare = brw_prepare_vertices,
.emit = brw_emit_vertices,
};
static void brw_prepare_indices(struct brw_context *brw)
{
GLcontext *ctx = &brw->intel.ctx;
struct intel_context *intel = &brw->intel;
const struct _mesa_index_buffer *index_buffer = brw->ib.ib;
GLuint ib_size;
dri_bo *bo = NULL;
struct gl_buffer_object *bufferobj;
GLuint offset;
GLuint ib_type_size;
if (index_buffer == NULL)
return;
ib_type_size = get_size(index_buffer->type);
ib_size = ib_type_size * index_buffer->count;
bufferobj = index_buffer->obj;;
/* Turn into a proper VBO:
*/
if (!_mesa_is_bufferobj(bufferobj)) {
brw->ib.start_vertex_offset = 0;
/* Get new bufferobj, offset:
*/
get_space(brw, ib_size, &bo, &offset);
/* Straight upload
*/
if (intel->intelScreen->kernel_exec_fencing) {
drm_intel_gem_bo_map_gtt(bo);
memcpy((char *)bo->virtual + offset, index_buffer->ptr, ib_size);
drm_intel_gem_bo_unmap_gtt(bo);
} else {
dri_bo_subdata(bo, offset, ib_size, index_buffer->ptr);
}
} else {
offset = (GLuint) (unsigned long) index_buffer->ptr;
brw->ib.start_vertex_offset = 0;
/* If the index buffer isn't aligned to its element size, we have to
* rebase it into a temporary.
*/
if ((get_size(index_buffer->type) - 1) & offset) {
GLubyte *map = ctx->Driver.MapBuffer(ctx,
GL_ELEMENT_ARRAY_BUFFER_ARB,
GL_DYNAMIC_DRAW_ARB,
bufferobj);
map += offset;
get_space(brw, ib_size, &bo, &offset);
dri_bo_subdata(bo, offset, ib_size, map);
ctx->Driver.UnmapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER_ARB, bufferobj);
} else {
bo = intel_bufferobj_buffer(intel, intel_buffer_object(bufferobj),
INTEL_READ);
dri_bo_reference(bo);
/* Use CMD_3D_PRIM'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;
offset = 0;
ib_size = bo->size;
}
}
if (brw->ib.bo != bo ||
brw->ib.offset != offset ||
brw->ib.size != ib_size)
{
drm_intel_bo_unreference(brw->ib.bo);
brw->ib.bo = bo;
brw->ib.offset = offset;
brw->ib.size = ib_size;
brw->state.dirty.brw |= BRW_NEW_INDEX_BUFFER;
} else {
drm_intel_bo_unreference(bo);
}
brw_add_validated_bo(brw, brw->ib.bo);
}
const struct brw_tracked_state brw_indices = {
.dirty = {
.mesa = 0,
.brw = BRW_NEW_INDICES,
.cache = 0,
},
.prepare = brw_prepare_indices,
};
static void brw_emit_index_buffer(struct brw_context *brw)
{
struct intel_context *intel = &brw->intel;
const struct _mesa_index_buffer *index_buffer = brw->ib.ib;
if (index_buffer == NULL)
return;
/* Emit the indexbuffer packet:
*/
{
struct brw_indexbuffer ib;
memset(&ib, 0, sizeof(ib));
ib.header.bits.opcode = CMD_INDEX_BUFFER;
ib.header.bits.length = sizeof(ib)/4 - 2;
ib.header.bits.index_format = get_index_type(index_buffer->type);
ib.header.bits.cut_index_enable = 0;
BEGIN_BATCH(4);
OUT_BATCH( ib.header.dword );
OUT_RELOC(brw->ib.bo,
I915_GEM_DOMAIN_VERTEX, 0,
brw->ib.offset);
OUT_RELOC(brw->ib.bo,
I915_GEM_DOMAIN_VERTEX, 0,
brw->ib.offset + brw->ib.size - 1);
OUT_BATCH( 0 );
ADVANCE_BATCH();
}
}
const struct brw_tracked_state brw_index_buffer = {
.dirty = {
.mesa = 0,
.brw = BRW_NEW_BATCH | BRW_NEW_INDEX_BUFFER,
.cache = 0,
},
.emit = brw_emit_index_buffer,
};