diff options
Diffstat (limited to 'src/gallium/drivers/i965/brw_draw_upload.c')
| -rw-r--r-- | src/gallium/drivers/i965/brw_draw_upload.c | 742 |
1 files changed, 742 insertions, 0 deletions
diff --git a/src/gallium/drivers/i965/brw_draw_upload.c b/src/gallium/drivers/i965/brw_draw_upload.c new file mode 100644 index 00000000000..a3ff6c58d89 --- /dev/null +++ b/src/gallium/drivers/i965/brw_draw_upload.c @@ -0,0 +1,742 @@ +/************************************************************************** + * + * 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/state.h" +#include "main/api_validate.h" +#include "main/enums.h" + +#include "brw_draw.h" +#include "brw_defines.h" +#include "brw_context.h" +#include "brw_state.h" +#include "brw_fallback.h" + +#include "intel_batchbuffer.h" +#include "intel_buffer_objects.h" +#include "intel_tex.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 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_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_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_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); + + /* Set the internal VBO\ to no-backing-store. We only use them as a + * temporary within a brw_try_draw_prims while the lock is held. + */ + /* DON'T DO THIS AS IF WE HAVE TO RE-ORG MEMORY WE NEED SOMEWHERE WITH + FAKE TO PUSH THIS STUFF */ +// if (!brw->intel.ttm) +// dri_bo_fake_disable_backing_store(brw->vb.upload.bo, NULL, NULL); +} + +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 = 1; + 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 = 1; + 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, IGNORE_CLIPRECTS); + 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, IGNORE_CLIPRECTS); + 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 (BRW_IS_IGDNG(brw)) { + if (input->stride) { + OUT_RELOC(input->bo, + I915_GEM_DOMAIN_VERTEX, 0, + input->offset + input->stride * input->count - 1); + } else { + assert(input->count == 1); + OUT_RELOC(input->bo, + I915_GEM_DOMAIN_VERTEX, 0, + input->offset + input->element_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, IGNORE_CLIPRECTS); + 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 (BRW_IS_IGDNG(brw)) + 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, IGNORE_CLIPRECTS); + 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, +}; |