| 0,0 → 1,650 |
|---|
| /************************************************************************** |
| * |
| * 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, 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. |
| * |
| **************************************************************************/ |
| |
| /** |
| * @file intel_buffer_objects.c |
| * |
| * This provides core GL buffer object functionality. |
| */ |
| |
| #include "main/imports.h" |
| #include "main/mtypes.h" |
| #include "main/macros.h" |
| #include "main/bufferobj.h" |
| |
| #include "brw_context.h" |
| #include "intel_blit.h" |
| #include "intel_buffer_objects.h" |
| #include "intel_batchbuffer.h" |
| |
| /** |
| * Map a buffer object; issue performance warnings if mapping causes stalls. |
| * |
| * This matches the drm_intel_bo_map API, but takes an additional human-readable |
| * name for the buffer object to use in the performance debug message. |
| */ |
| int |
| brw_bo_map(struct brw_context *brw, |
| drm_intel_bo *bo, int write_enable, |
| const char *bo_name) |
| { |
| if (likely(!brw->perf_debug) || !drm_intel_bo_busy(bo)) |
| return drm_intel_bo_map(bo, write_enable); |
| |
| double start_time = get_time(); |
| |
| int ret = drm_intel_bo_map(bo, write_enable); |
| |
| perf_debug("CPU mapping a busy %s BO stalled and took %.03f ms.\n", |
| bo_name, (get_time() - start_time) * 1000); |
| |
| return ret; |
| } |
| |
| int |
| brw_bo_map_gtt(struct brw_context *brw, drm_intel_bo *bo, const char *bo_name) |
| { |
| if (likely(!brw->perf_debug) || !drm_intel_bo_busy(bo)) |
| return drm_intel_gem_bo_map_gtt(bo); |
| |
| double start_time = get_time(); |
| |
| int ret = drm_intel_gem_bo_map_gtt(bo); |
| |
| perf_debug("GTT mapping a busy %s BO stalled and took %.03f ms.\n", |
| bo_name, (get_time() - start_time) * 1000); |
| |
| return ret; |
| } |
| |
| static void |
| mark_buffer_gpu_usage(struct intel_buffer_object *intel_obj, |
| uint32_t offset, uint32_t size) |
| { |
| intel_obj->gpu_active_start = MIN2(intel_obj->gpu_active_start, offset); |
| intel_obj->gpu_active_end = MAX2(intel_obj->gpu_active_end, offset + size); |
| } |
| |
| static void |
| mark_buffer_inactive(struct intel_buffer_object *intel_obj) |
| { |
| intel_obj->gpu_active_start = ~0; |
| intel_obj->gpu_active_end = 0; |
| } |
| |
| /** Allocates a new drm_intel_bo to store the data for the buffer object. */ |
| static void |
| alloc_buffer_object(struct brw_context *brw, |
| struct intel_buffer_object *intel_obj) |
| { |
| intel_obj->buffer = drm_intel_bo_alloc(brw->bufmgr, "bufferobj", |
| intel_obj->Base.Size, 64); |
| |
| /* the buffer might be bound as a uniform buffer, need to update it |
| */ |
| if (intel_obj->Base.UsageHistory & USAGE_UNIFORM_BUFFER) |
| brw->ctx.NewDriverState |= BRW_NEW_UNIFORM_BUFFER; |
| if (intel_obj->Base.UsageHistory & USAGE_TEXTURE_BUFFER) |
| brw->ctx.NewDriverState |= BRW_NEW_TEXTURE_BUFFER; |
| if (intel_obj->Base.UsageHistory & USAGE_ATOMIC_COUNTER_BUFFER) |
| brw->ctx.NewDriverState |= BRW_NEW_ATOMIC_BUFFER; |
| |
| mark_buffer_inactive(intel_obj); |
| } |
| |
| static void |
| release_buffer(struct intel_buffer_object *intel_obj) |
| { |
| drm_intel_bo_unreference(intel_obj->buffer); |
| intel_obj->buffer = NULL; |
| } |
| |
| /** |
| * The NewBufferObject() driver hook. |
| * |
| * Allocates a new intel_buffer_object structure and initializes it. |
| * |
| * There is some duplication between mesa's bufferobjects and our |
| * bufmgr buffers. Both have an integer handle and a hashtable to |
| * lookup an opaque structure. It would be nice if the handles and |
| * internal structure where somehow shared. |
| */ |
| static struct gl_buffer_object * |
| brw_new_buffer_object(struct gl_context * ctx, GLuint name) |
| { |
| struct intel_buffer_object *obj = CALLOC_STRUCT(intel_buffer_object); |
| if (!obj) { |
| _mesa_error_no_memory(__func__); |
| } |
| |
| _mesa_initialize_buffer_object(ctx, &obj->Base, name); |
| |
| obj->buffer = NULL; |
| |
| return &obj->Base; |
| } |
| |
| /** |
| * The DeleteBuffer() driver hook. |
| * |
| * Deletes a single OpenGL buffer object. Used by glDeleteBuffers(). |
| */ |
| static void |
| brw_delete_buffer(struct gl_context * ctx, struct gl_buffer_object *obj) |
| { |
| struct intel_buffer_object *intel_obj = intel_buffer_object(obj); |
| |
| assert(intel_obj); |
| |
| /* Buffer objects are automatically unmapped when deleting according |
| * to the spec, but Mesa doesn't do UnmapBuffer for us at context destroy |
| * (though it does if you call glDeleteBuffers) |
| */ |
| _mesa_buffer_unmap_all_mappings(ctx, obj); |
| |
| drm_intel_bo_unreference(intel_obj->buffer); |
| free(intel_obj); |
| } |
| |
| |
| /** |
| * The BufferData() driver hook. |
| * |
| * Implements glBufferData(), which recreates a buffer object's data store |
| * and populates it with the given data, if present. |
| * |
| * Any data that was previously stored in the buffer object is lost. |
| * |
| * \return true for success, false if out of memory |
| */ |
| static GLboolean |
| brw_buffer_data(struct gl_context *ctx, |
| GLenum target, |
| GLsizeiptrARB size, |
| const GLvoid *data, |
| GLenum usage, |
| GLbitfield storageFlags, |
| struct gl_buffer_object *obj) |
| { |
| struct brw_context *brw = brw_context(ctx); |
| struct intel_buffer_object *intel_obj = intel_buffer_object(obj); |
| |
| /* Part of the ABI, but this function doesn't use it. |
| */ |
| (void) target; |
| |
| intel_obj->Base.Size = size; |
| intel_obj->Base.Usage = usage; |
| intel_obj->Base.StorageFlags = storageFlags; |
| |
| assert(!obj->Mappings[MAP_USER].Pointer); /* Mesa should have unmapped it */ |
| assert(!obj->Mappings[MAP_INTERNAL].Pointer); |
| |
| if (intel_obj->buffer != NULL) |
| release_buffer(intel_obj); |
| |
| if (size != 0) { |
| alloc_buffer_object(brw, intel_obj); |
| if (!intel_obj->buffer) |
| return false; |
| |
| if (data != NULL) |
| drm_intel_bo_subdata(intel_obj->buffer, 0, size, data); |
| } |
| |
| return true; |
| } |
| |
| |
| /** |
| * The BufferSubData() driver hook. |
| * |
| * Implements glBufferSubData(), which replaces a portion of the data in a |
| * buffer object. |
| * |
| * If the data range specified by (size + offset) extends beyond the end of |
| * the buffer or if data is NULL, no copy is performed. |
| */ |
| static void |
| brw_buffer_subdata(struct gl_context *ctx, |
| GLintptrARB offset, |
| GLsizeiptrARB size, |
| const GLvoid *data, |
| struct gl_buffer_object *obj) |
| { |
| struct brw_context *brw = brw_context(ctx); |
| struct intel_buffer_object *intel_obj = intel_buffer_object(obj); |
| bool busy; |
| |
| if (size == 0) |
| return; |
| |
| assert(intel_obj); |
| |
| /* See if we can unsynchronized write the data into the user's BO. This |
| * avoids GPU stalls in unfortunately common user patterns (uploading |
| * sequentially into a BO, with draw calls in between each upload). |
| * |
| * Once we've hit this path, we mark this GL BO as preferring stalling to |
| * blits, so that we can hopefully hit this path again in the future |
| * (otherwise, an app that might occasionally stall but mostly not will end |
| * up with blitting all the time, at the cost of bandwidth) |
| */ |
| if (offset + size <= intel_obj->gpu_active_start || |
| intel_obj->gpu_active_end <= offset) { |
| if (brw->has_llc) { |
| drm_intel_gem_bo_map_unsynchronized(intel_obj->buffer); |
| memcpy(intel_obj->buffer->virtual + offset, data, size); |
| drm_intel_bo_unmap(intel_obj->buffer); |
| |
| if (intel_obj->gpu_active_end > intel_obj->gpu_active_start) |
| intel_obj->prefer_stall_to_blit = true; |
| return; |
| } else { |
| perf_debug("BufferSubData could be unsynchronized, but !LLC doesn't support it yet\n"); |
| } |
| } |
| |
| busy = |
| drm_intel_bo_busy(intel_obj->buffer) || |
| drm_intel_bo_references(brw->batch.bo, intel_obj->buffer); |
| |
| if (busy) { |
| if (size == intel_obj->Base.Size) { |
| /* Replace the current busy bo so the subdata doesn't stall. */ |
| drm_intel_bo_unreference(intel_obj->buffer); |
| alloc_buffer_object(brw, intel_obj); |
| } else if (!intel_obj->prefer_stall_to_blit) { |
| perf_debug("Using a blit copy to avoid stalling on " |
| "glBufferSubData(%ld, %ld) (%ldkb) to a busy " |
| "(%d-%d) buffer object.\n", |
| (long)offset, (long)offset + size, (long)(size/1024), |
| intel_obj->gpu_active_start, |
| intel_obj->gpu_active_end); |
| drm_intel_bo *temp_bo = |
| drm_intel_bo_alloc(brw->bufmgr, "subdata temp", size, 64); |
| |
| drm_intel_bo_subdata(temp_bo, 0, size, data); |
| |
| intel_emit_linear_blit(brw, |
| intel_obj->buffer, offset, |
| temp_bo, 0, |
| size); |
| |
| drm_intel_bo_unreference(temp_bo); |
| return; |
| } else { |
| perf_debug("Stalling on glBufferSubData(%ld, %ld) (%ldkb) to a busy " |
| "(%d-%d) buffer object. Use glMapBufferRange() to " |
| "avoid this.\n", |
| (long)offset, (long)offset + size, (long)(size/1024), |
| intel_obj->gpu_active_start, |
| intel_obj->gpu_active_end); |
| intel_batchbuffer_flush(brw); |
| } |
| } |
| |
| drm_intel_bo_subdata(intel_obj->buffer, offset, size, data); |
| mark_buffer_inactive(intel_obj); |
| } |
| |
| |
| /** |
| * The GetBufferSubData() driver hook. |
| * |
| * Implements glGetBufferSubData(), which copies a subrange of a buffer |
| * object into user memory. |
| */ |
| static void |
| brw_get_buffer_subdata(struct gl_context *ctx, |
| GLintptrARB offset, |
| GLsizeiptrARB size, |
| GLvoid *data, |
| struct gl_buffer_object *obj) |
| { |
| struct intel_buffer_object *intel_obj = intel_buffer_object(obj); |
| struct brw_context *brw = brw_context(ctx); |
| |
| assert(intel_obj); |
| if (drm_intel_bo_references(brw->batch.bo, intel_obj->buffer)) { |
| intel_batchbuffer_flush(brw); |
| } |
| drm_intel_bo_get_subdata(intel_obj->buffer, offset, size, data); |
| |
| mark_buffer_inactive(intel_obj); |
| } |
| |
| |
| /** |
| * The MapBufferRange() driver hook. |
| * |
| * This implements both glMapBufferRange() and glMapBuffer(). |
| * |
| * The goal of this extension is to allow apps to accumulate their rendering |
| * at the same time as they accumulate their buffer object. Without it, |
| * you'd end up blocking on execution of rendering every time you mapped |
| * the buffer to put new data in. |
| * |
| * We support it in 3 ways: If unsynchronized, then don't bother |
| * flushing the batchbuffer before mapping the buffer, which can save blocking |
| * in many cases. If we would still block, and they allow the whole buffer |
| * to be invalidated, then just allocate a new buffer to replace the old one. |
| * If not, and we'd block, and they allow the subrange of the buffer to be |
| * invalidated, then we can make a new little BO, let them write into that, |
| * and blit it into the real BO at unmap time. |
| */ |
| static void * |
| brw_map_buffer_range(struct gl_context *ctx, |
| GLintptr offset, GLsizeiptr length, |
| GLbitfield access, struct gl_buffer_object *obj, |
| gl_map_buffer_index index) |
| { |
| struct brw_context *brw = brw_context(ctx); |
| struct intel_buffer_object *intel_obj = intel_buffer_object(obj); |
| |
| assert(intel_obj); |
| |
| /* _mesa_MapBufferRange (GL entrypoint) sets these, but the vbo module also |
| * internally uses our functions directly. |
| */ |
| obj->Mappings[index].Offset = offset; |
| obj->Mappings[index].Length = length; |
| obj->Mappings[index].AccessFlags = access; |
| |
| if (intel_obj->buffer == NULL) { |
| obj->Mappings[index].Pointer = NULL; |
| return NULL; |
| } |
| |
| /* If the access is synchronized (like a normal buffer mapping), then get |
| * things flushed out so the later mapping syncs appropriately through GEM. |
| * If the user doesn't care about existing buffer contents and mapping would |
| * cause us to block, then throw out the old buffer. |
| * |
| * If they set INVALIDATE_BUFFER, we can pitch the current contents to |
| * achieve the required synchronization. |
| */ |
| if (!(access & GL_MAP_UNSYNCHRONIZED_BIT)) { |
| if (drm_intel_bo_references(brw->batch.bo, intel_obj->buffer)) { |
| if (access & GL_MAP_INVALIDATE_BUFFER_BIT) { |
| drm_intel_bo_unreference(intel_obj->buffer); |
| alloc_buffer_object(brw, intel_obj); |
| } else { |
| perf_debug("Stalling on the GPU for mapping a busy buffer " |
| "object\n"); |
| intel_batchbuffer_flush(brw); |
| } |
| } else if (drm_intel_bo_busy(intel_obj->buffer) && |
| (access & GL_MAP_INVALIDATE_BUFFER_BIT)) { |
| drm_intel_bo_unreference(intel_obj->buffer); |
| alloc_buffer_object(brw, intel_obj); |
| } |
| } |
| |
| /* If the user is mapping a range of an active buffer object but |
| * doesn't require the current contents of that range, make a new |
| * BO, and we'll copy what they put in there out at unmap or |
| * FlushRange time. |
| * |
| * That is, unless they're looking for a persistent mapping -- we would |
| * need to do blits in the MemoryBarrier call, and it's easier to just do a |
| * GPU stall and do a mapping. |
| */ |
| if (!(access & (GL_MAP_UNSYNCHRONIZED_BIT | GL_MAP_PERSISTENT_BIT)) && |
| (access & GL_MAP_INVALIDATE_RANGE_BIT) && |
| drm_intel_bo_busy(intel_obj->buffer)) { |
| /* Ensure that the base alignment of the allocation meets the alignment |
| * guarantees the driver has advertised to the application. |
| */ |
| const unsigned alignment = ctx->Const.MinMapBufferAlignment; |
| |
| intel_obj->map_extra[index] = (uintptr_t) offset % alignment; |
| intel_obj->range_map_bo[index] = drm_intel_bo_alloc(brw->bufmgr, |
| "BO blit temp", |
| length + |
| intel_obj->map_extra[index], |
| alignment); |
| if (brw->has_llc) { |
| brw_bo_map(brw, intel_obj->range_map_bo[index], |
| (access & GL_MAP_WRITE_BIT) != 0, "range-map"); |
| } else { |
| drm_intel_gem_bo_map_gtt(intel_obj->range_map_bo[index]); |
| } |
| obj->Mappings[index].Pointer = |
| intel_obj->range_map_bo[index]->virtual + intel_obj->map_extra[index]; |
| return obj->Mappings[index].Pointer; |
| } |
| |
| if (access & GL_MAP_UNSYNCHRONIZED_BIT) { |
| if (!brw->has_llc && brw->perf_debug && |
| drm_intel_bo_busy(intel_obj->buffer)) { |
| perf_debug("MapBufferRange with GL_MAP_UNSYNCHRONIZED_BIT stalling (it's actually synchronized on non-LLC platforms)\n"); |
| } |
| drm_intel_gem_bo_map_unsynchronized(intel_obj->buffer); |
| } else if (!brw->has_llc && (!(access & GL_MAP_READ_BIT) || |
| (access & GL_MAP_PERSISTENT_BIT))) { |
| drm_intel_gem_bo_map_gtt(intel_obj->buffer); |
| mark_buffer_inactive(intel_obj); |
| } else { |
| brw_bo_map(brw, intel_obj->buffer, (access & GL_MAP_WRITE_BIT) != 0, |
| "MapBufferRange"); |
| mark_buffer_inactive(intel_obj); |
| } |
| |
| obj->Mappings[index].Pointer = intel_obj->buffer->virtual + offset; |
| return obj->Mappings[index].Pointer; |
| } |
| |
| /** |
| * The FlushMappedBufferRange() driver hook. |
| * |
| * Implements glFlushMappedBufferRange(), which signifies that modifications |
| * have been made to a range of a mapped buffer, and it should be flushed. |
| * |
| * This is only used for buffers mapped with GL_MAP_FLUSH_EXPLICIT_BIT. |
| * |
| * Ideally we'd use a BO to avoid taking up cache space for the temporary |
| * data, but FlushMappedBufferRange may be followed by further writes to |
| * the pointer, so we would have to re-map after emitting our blit, which |
| * would defeat the point. |
| */ |
| static void |
| brw_flush_mapped_buffer_range(struct gl_context *ctx, |
| GLintptr offset, GLsizeiptr length, |
| struct gl_buffer_object *obj, |
| gl_map_buffer_index index) |
| { |
| struct brw_context *brw = brw_context(ctx); |
| struct intel_buffer_object *intel_obj = intel_buffer_object(obj); |
| |
| assert(obj->Mappings[index].AccessFlags & GL_MAP_FLUSH_EXPLICIT_BIT); |
| |
| /* If we gave a direct mapping of the buffer instead of using a temporary, |
| * then there's nothing to do. |
| */ |
| if (intel_obj->range_map_bo[index] == NULL) |
| return; |
| |
| if (length == 0) |
| return; |
| |
| /* Note that we're not unmapping our buffer while executing the blit. We |
| * need to have a mapping still at the end of this call, since the user |
| * gets to make further modifications and glFlushMappedBufferRange() calls. |
| * This is safe, because: |
| * |
| * - On LLC platforms, we're using a CPU mapping that's coherent with the |
| * GPU (except for the render caches), so the kernel doesn't need to do |
| * any flushing work for us except for what happens at batch exec time |
| * anyway. |
| * |
| * - On non-LLC platforms, we're using a GTT mapping that writes directly |
| * to system memory (except for the chipset cache that gets flushed at |
| * batch exec time). |
| * |
| * In both cases we don't need to stall for the previous blit to complete |
| * so we can re-map (and we definitely don't want to, since that would be |
| * slow): If the user edits a part of their buffer that's previously been |
| * blitted, then our lack of synchoronization is fine, because either |
| * they'll get some too-new data in the first blit and not do another blit |
| * of that area (but in that case the results are undefined), or they'll do |
| * another blit of that area and the complete newer data will land the |
| * second time. |
| */ |
| intel_emit_linear_blit(brw, |
| intel_obj->buffer, |
| obj->Mappings[index].Offset + offset, |
| intel_obj->range_map_bo[index], |
| intel_obj->map_extra[index] + offset, |
| length); |
| mark_buffer_gpu_usage(intel_obj, |
| obj->Mappings[index].Offset + offset, |
| length); |
| } |
| |
| |
| /** |
| * The UnmapBuffer() driver hook. |
| * |
| * Implements glUnmapBuffer(). |
| */ |
| static GLboolean |
| brw_unmap_buffer(struct gl_context *ctx, |
| struct gl_buffer_object *obj, |
| gl_map_buffer_index index) |
| { |
| struct brw_context *brw = brw_context(ctx); |
| struct intel_buffer_object *intel_obj = intel_buffer_object(obj); |
| |
| assert(intel_obj); |
| assert(obj->Mappings[index].Pointer); |
| if (intel_obj->range_map_bo[index] != NULL) { |
| drm_intel_bo_unmap(intel_obj->range_map_bo[index]); |
| |
| if (!(obj->Mappings[index].AccessFlags & GL_MAP_FLUSH_EXPLICIT_BIT)) { |
| intel_emit_linear_blit(brw, |
| intel_obj->buffer, obj->Mappings[index].Offset, |
| intel_obj->range_map_bo[index], |
| intel_obj->map_extra[index], |
| obj->Mappings[index].Length); |
| mark_buffer_gpu_usage(intel_obj, obj->Mappings[index].Offset, |
| obj->Mappings[index].Length); |
| } |
| |
| /* Since we've emitted some blits to buffers that will (likely) be used |
| * in rendering operations in other cache domains in this batch, emit a |
| * flush. Once again, we wish for a domain tracker in libdrm to cover |
| * usage inside of a batchbuffer. |
| */ |
| intel_batchbuffer_emit_mi_flush(brw); |
| |
| drm_intel_bo_unreference(intel_obj->range_map_bo[index]); |
| intel_obj->range_map_bo[index] = NULL; |
| } else if (intel_obj->buffer != NULL) { |
| drm_intel_bo_unmap(intel_obj->buffer); |
| } |
| obj->Mappings[index].Pointer = NULL; |
| obj->Mappings[index].Offset = 0; |
| obj->Mappings[index].Length = 0; |
| |
| return true; |
| } |
| |
| /** |
| * Gets a pointer to the object's BO, and marks the given range as being used |
| * on the GPU. |
| * |
| * Anywhere that uses buffer objects in the pipeline should be using this to |
| * mark the range of the buffer that is being accessed by the pipeline. |
| */ |
| drm_intel_bo * |
| intel_bufferobj_buffer(struct brw_context *brw, |
| struct intel_buffer_object *intel_obj, |
| uint32_t offset, uint32_t size) |
| { |
| /* This is needed so that things like transform feedback and texture buffer |
| * objects that need a BO but don't want to check that they exist for |
| * draw-time validation can just always get a BO from a GL buffer object. |
| */ |
| if (intel_obj->buffer == NULL) |
| alloc_buffer_object(brw, intel_obj); |
| |
| mark_buffer_gpu_usage(intel_obj, offset, size); |
| |
| return intel_obj->buffer; |
| } |
| |
| /** |
| * The CopyBufferSubData() driver hook. |
| * |
| * Implements glCopyBufferSubData(), which copies a portion of one buffer |
| * object's data to another. Independent source and destination offsets |
| * are allowed. |
| */ |
| static void |
| brw_copy_buffer_subdata(struct gl_context *ctx, |
| struct gl_buffer_object *src, |
| struct gl_buffer_object *dst, |
| GLintptr read_offset, GLintptr write_offset, |
| GLsizeiptr size) |
| { |
| struct brw_context *brw = brw_context(ctx); |
| struct intel_buffer_object *intel_src = intel_buffer_object(src); |
| struct intel_buffer_object *intel_dst = intel_buffer_object(dst); |
| drm_intel_bo *src_bo, *dst_bo; |
| |
| if (size == 0) |
| return; |
| |
| dst_bo = intel_bufferobj_buffer(brw, intel_dst, write_offset, size); |
| src_bo = intel_bufferobj_buffer(brw, intel_src, read_offset, size); |
| |
| intel_emit_linear_blit(brw, |
| dst_bo, write_offset, |
| src_bo, read_offset, size); |
| |
| /* Since we've emitted some blits to buffers that will (likely) be used |
| * in rendering operations in other cache domains in this batch, emit a |
| * flush. Once again, we wish for a domain tracker in libdrm to cover |
| * usage inside of a batchbuffer. |
| */ |
| intel_batchbuffer_emit_mi_flush(brw); |
| } |
| |
| void |
| intelInitBufferObjectFuncs(struct dd_function_table *functions) |
| { |
| functions->NewBufferObject = brw_new_buffer_object; |
| functions->DeleteBuffer = brw_delete_buffer; |
| functions->BufferData = brw_buffer_data; |
| functions->BufferSubData = brw_buffer_subdata; |
| functions->GetBufferSubData = brw_get_buffer_subdata; |
| functions->MapBufferRange = brw_map_buffer_range; |
| functions->FlushMappedBufferRange = brw_flush_mapped_buffer_range; |
| functions->UnmapBuffer = brw_unmap_buffer; |
| functions->CopyBufferSubData = brw_copy_buffer_subdata; |
| } |