| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "cc/raster/gpu_raster_buffer_provider.h" |
| |
| #include <stdint.h> |
| |
| #include <algorithm> |
| |
| #include "base/macros.h" |
| #include "base/memory/ptr_util.h" |
| #include "base/metrics/histogram_macros.h" |
| #include "base/trace_event/trace_event.h" |
| #include "cc/base/histograms.h" |
| #include "cc/playback/image_hijack_canvas.h" |
| #include "cc/playback/raster_source.h" |
| #include "cc/raster/scoped_gpu_raster.h" |
| #include "cc/resources/resource.h" |
| #include "gpu/command_buffer/client/gles2_interface.h" |
| #include "third_party/skia/include/core/SkMultiPictureDraw.h" |
| #include "third_party/skia/include/core/SkPictureRecorder.h" |
| #include "third_party/skia/include/core/SkSurface.h" |
| #include "third_party/skia/include/gpu/GrContext.h" |
| |
| namespace cc { |
| namespace { |
| |
| static sk_sp<SkPicture> PlaybackToPicture( |
| const RasterSource* raster_source, |
| bool resource_has_previous_content, |
| const gfx::Size& resource_size, |
| const gfx::Rect& raster_full_rect, |
| const gfx::Rect& raster_dirty_rect, |
| float scale, |
| const RasterSource::PlaybackSettings& playback_settings) { |
| // GPU raster doesn't do low res tiles, so should always include images. |
| DCHECK(!playback_settings.skip_images); |
| |
| gfx::Rect playback_rect = raster_full_rect; |
| if (resource_has_previous_content) { |
| playback_rect.Intersect(raster_dirty_rect); |
| } |
| DCHECK(!playback_rect.IsEmpty()) |
| << "Why are we rastering a tile that's not dirty?"; |
| |
| // Log a histogram of the percentage of pixels that were saved due to |
| // partial raster. |
| const char* client_name = GetClientNameForMetrics(); |
| float full_rect_size = raster_full_rect.size().GetArea(); |
| if (full_rect_size > 0 && client_name) { |
| float fraction_partial_rastered = |
| static_cast<float>(playback_rect.size().GetArea()) / full_rect_size; |
| float fraction_saved = 1.0f - fraction_partial_rastered; |
| UMA_HISTOGRAM_PERCENTAGE( |
| base::StringPrintf("Renderer4.%s.PartialRasterPercentageSaved.Gpu", |
| client_name), |
| 100.0f * fraction_saved); |
| } |
| |
| // Play back raster_source into temp SkPicture. |
| SkPictureRecorder recorder; |
| sk_sp<SkCanvas> canvas = sk_ref_sp( |
| recorder.beginRecording(resource_size.width(), resource_size.height())); |
| canvas->save(); |
| |
| // The GPU image decode controller assumes that Skia is done with an image |
| // when playback is complete. However, in this case, where we play back to a |
| // picture, we don't actually finish with the images until the picture is |
| // rasterized later. This can cause lifetime issues in the GPU image decode |
| // controller. To avoid this, we disable the image hijack canvas (and image |
| // decode controller) for this playback step, instead enabling it for the |
| // later picture rasterization. |
| RasterSource::PlaybackSettings settings = playback_settings; |
| settings.use_image_hijack_canvas = false; |
| raster_source->PlaybackToCanvas(canvas.get(), raster_full_rect, playback_rect, |
| scale, settings); |
| canvas->restore(); |
| return recorder.finishRecordingAsPicture(); |
| } |
| |
| static void RasterizePicture(SkPicture* picture, |
| ContextProvider* context_provider, |
| ResourceProvider::ScopedWriteLockGL* resource_lock, |
| bool async_worker_context_enabled, |
| bool use_distance_field_text, |
| bool can_use_lcd_text, |
| int msaa_sample_count, |
| ImageDecodeController* image_decode_controller, |
| bool use_image_hijack_canvas) { |
| ScopedGpuRaster gpu_raster(context_provider); |
| |
| ResourceProvider::ScopedSkSurfaceProvider scoped_surface( |
| context_provider, resource_lock, async_worker_context_enabled, |
| use_distance_field_text, can_use_lcd_text, msaa_sample_count); |
| SkSurface* sk_surface = scoped_surface.sk_surface(); |
| // Allocating an SkSurface will fail after a lost context. Pretend we |
| // rasterized, as the contents of the resource don't matter anymore. |
| if (!sk_surface) |
| return; |
| |
| // As we did not use the image hijack canvas during the initial playback to |
| // |picture| (see PlaybackToPicture), we must enable it here if requested. |
| SkCanvas* canvas = sk_surface->getCanvas(); |
| std::unique_ptr<ImageHijackCanvas> hijack_canvas; |
| if (use_image_hijack_canvas) { |
| DCHECK(image_decode_controller); |
| const SkImageInfo& info = canvas->imageInfo(); |
| hijack_canvas.reset(new ImageHijackCanvas(info.width(), info.height(), |
| image_decode_controller)); |
| SkIRect raster_bounds; |
| canvas->getClipDeviceBounds(&raster_bounds); |
| hijack_canvas->clipRect(SkRect::MakeFromIRect(raster_bounds)); |
| hijack_canvas->setMatrix(canvas->getTotalMatrix()); |
| hijack_canvas->addCanvas(canvas); |
| |
| // Replace canvas with our ImageHijackCanvas which is wrapping it. |
| canvas = hijack_canvas.get(); |
| } |
| |
| SkMultiPictureDraw multi_picture_draw; |
| multi_picture_draw.add(canvas, picture); |
| multi_picture_draw.draw(false); |
| } |
| |
| } // namespace |
| |
| GpuRasterBufferProvider::RasterBufferImpl::RasterBufferImpl( |
| GpuRasterBufferProvider* client, |
| ResourceProvider* resource_provider, |
| ResourceId resource_id, |
| bool async_worker_context_enabled, |
| bool resource_has_previous_content) |
| : client_(client), |
| lock_(resource_provider, resource_id, async_worker_context_enabled), |
| resource_has_previous_content_(resource_has_previous_content) { |
| client_->pending_raster_buffers_.insert(this); |
| } |
| |
| GpuRasterBufferProvider::RasterBufferImpl::~RasterBufferImpl() { |
| client_->pending_raster_buffers_.erase(this); |
| } |
| |
| void GpuRasterBufferProvider::RasterBufferImpl::Playback( |
| const RasterSource* raster_source, |
| const gfx::Rect& raster_full_rect, |
| const gfx::Rect& raster_dirty_rect, |
| uint64_t new_content_id, |
| float scale, |
| const RasterSource::PlaybackSettings& playback_settings) { |
| TRACE_EVENT0("cc", "GpuRasterBuffer::Playback"); |
| client_->PlaybackOnWorkerThread(&lock_, sync_token_, |
| resource_has_previous_content_, raster_source, |
| raster_full_rect, raster_dirty_rect, |
| new_content_id, scale, playback_settings); |
| } |
| |
| GpuRasterBufferProvider::GpuRasterBufferProvider( |
| ContextProvider* compositor_context_provider, |
| ContextProvider* worker_context_provider, |
| ResourceProvider* resource_provider, |
| bool use_distance_field_text, |
| int gpu_rasterization_msaa_sample_count, |
| bool async_worker_context_enabled) |
| : compositor_context_provider_(compositor_context_provider), |
| worker_context_provider_(worker_context_provider), |
| resource_provider_(resource_provider), |
| use_distance_field_text_(use_distance_field_text), |
| msaa_sample_count_(gpu_rasterization_msaa_sample_count), |
| async_worker_context_enabled_(async_worker_context_enabled) { |
| DCHECK(compositor_context_provider); |
| DCHECK(worker_context_provider); |
| } |
| |
| GpuRasterBufferProvider::~GpuRasterBufferProvider() { |
| DCHECK(pending_raster_buffers_.empty()); |
| } |
| |
| std::unique_ptr<RasterBuffer> GpuRasterBufferProvider::AcquireBufferForRaster( |
| const Resource* resource, |
| uint64_t resource_content_id, |
| uint64_t previous_content_id) { |
| bool resource_has_previous_content = |
| resource_content_id && resource_content_id == previous_content_id; |
| return base::WrapUnique(new RasterBufferImpl( |
| this, resource_provider_, resource->id(), async_worker_context_enabled_, |
| resource_has_previous_content)); |
| } |
| |
| void GpuRasterBufferProvider::ReleaseBufferForRaster( |
| std::unique_ptr<RasterBuffer> buffer) { |
| // Nothing to do here. RasterBufferImpl destructor cleans up after itself. |
| } |
| |
| void GpuRasterBufferProvider::OrderingBarrier() { |
| TRACE_EVENT0("cc", "GpuRasterBufferProvider::OrderingBarrier"); |
| |
| gpu::gles2::GLES2Interface* gl = compositor_context_provider_->ContextGL(); |
| if (async_worker_context_enabled_) { |
| GLuint64 fence = gl->InsertFenceSyncCHROMIUM(); |
| gl->OrderingBarrierCHROMIUM(); |
| |
| gpu::SyncToken sync_token; |
| gl->GenUnverifiedSyncTokenCHROMIUM(fence, sync_token.GetData()); |
| |
| DCHECK(sync_token.HasData() || |
| gl->GetGraphicsResetStatusKHR() != GL_NO_ERROR); |
| |
| for (RasterBufferImpl* buffer : pending_raster_buffers_) |
| buffer->set_sync_token(sync_token); |
| } else { |
| gl->OrderingBarrierCHROMIUM(); |
| } |
| pending_raster_buffers_.clear(); |
| } |
| |
| ResourceFormat GpuRasterBufferProvider::GetResourceFormat( |
| bool must_support_alpha) const { |
| return resource_provider_->best_render_buffer_format(); |
| } |
| |
| bool GpuRasterBufferProvider::IsResourceSwizzleRequired( |
| bool must_support_alpha) const { |
| // This doesn't require a swizzle because we rasterize to the correct format. |
| return false; |
| } |
| |
| bool GpuRasterBufferProvider::CanPartialRasterIntoProvidedResource() const { |
| // Partial raster doesn't support MSAA, as the MSAA resolve is unaware of clip |
| // rects. |
| // TODO(crbug.com/629683): See if we can work around this limitation. |
| return msaa_sample_count_ == 0; |
| } |
| |
| void GpuRasterBufferProvider::Shutdown() { |
| pending_raster_buffers_.clear(); |
| } |
| |
| void GpuRasterBufferProvider::PlaybackOnWorkerThread( |
| ResourceProvider::ScopedWriteLockGL* resource_lock, |
| const gpu::SyncToken& sync_token, |
| bool resource_has_previous_content, |
| const RasterSource* raster_source, |
| const gfx::Rect& raster_full_rect, |
| const gfx::Rect& raster_dirty_rect, |
| uint64_t new_content_id, |
| float scale, |
| const RasterSource::PlaybackSettings& playback_settings) { |
| ContextProvider::ScopedContextLock scoped_context(worker_context_provider_); |
| gpu::gles2::GLES2Interface* gl = scoped_context.ContextGL(); |
| DCHECK(gl); |
| |
| if (async_worker_context_enabled_) { |
| // Early out if sync token is invalid. This happens if the compositor |
| // context was lost before ScheduleTasks was called. |
| if (!sync_token.HasData()) |
| return; |
| // Synchronize with compositor. |
| gl->WaitSyncTokenCHROMIUM(sync_token.GetConstData()); |
| } |
| |
| sk_sp<SkPicture> picture = PlaybackToPicture( |
| raster_source, resource_has_previous_content, resource_lock->size(), |
| raster_full_rect, raster_dirty_rect, scale, playback_settings); |
| |
| // Turn on distance fields for layers that have ever animated. |
| bool use_distance_field_text = |
| use_distance_field_text_ || |
| raster_source->ShouldAttemptToUseDistanceFieldText(); |
| |
| RasterizePicture(picture.get(), worker_context_provider_, resource_lock, |
| async_worker_context_enabled_, use_distance_field_text, |
| raster_source->CanUseLCDText(), msaa_sample_count_, |
| raster_source->image_decode_controller(), |
| playback_settings.use_image_hijack_canvas); |
| |
| const uint64_t fence_sync = gl->InsertFenceSyncCHROMIUM(); |
| |
| // Barrier to sync worker context output to cc context. |
| gl->OrderingBarrierCHROMIUM(); |
| |
| // Generate sync token after the barrier for cross context synchronization. |
| gpu::SyncToken resource_sync_token; |
| gl->GenUnverifiedSyncTokenCHROMIUM(fence_sync, resource_sync_token.GetData()); |
| resource_lock->set_sync_token(resource_sync_token); |
| resource_lock->set_synchronized(!async_worker_context_enabled_); |
| } |
| |
| } // namespace cc |