/* * 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, };