| // Copyright 2015 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/resources/gpu_rasterizer.h" |
| |
| #include <algorithm> |
| |
| #include "base/bind.h" |
| #include "base/debug/trace_event.h" |
| #include "base/metrics/histogram.h" |
| #include "cc/debug/devtools_instrumentation.h" |
| #include "cc/debug/frame_viewer_instrumentation.h" |
| #include "cc/output/context_provider.h" |
| #include "cc/resources/raster_buffer.h" |
| #include "cc/resources/raster_source.h" |
| #include "cc/resources/resource.h" |
| #include "cc/resources/resource_provider.h" |
| #include "cc/resources/scoped_gpu_raster.h" |
| #include "cc/resources/tile_manager.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 { |
| |
| // static |
| scoped_ptr<GpuRasterizer> GpuRasterizer::Create( |
| ContextProvider* context_provider, |
| ResourceProvider* resource_provider, |
| bool use_distance_field_text, |
| bool tile_prepare_enabled) { |
| return make_scoped_ptr<GpuRasterizer>( |
| new GpuRasterizer(context_provider, resource_provider, |
| use_distance_field_text, tile_prepare_enabled)); |
| } |
| |
| GpuRasterizer::GpuRasterizer(ContextProvider* context_provider, |
| ResourceProvider* resource_provider, |
| bool use_distance_field_text, |
| bool tile_prepare_enabled) |
| : context_provider_(context_provider), |
| resource_provider_(resource_provider), |
| use_distance_field_text_(use_distance_field_text), |
| tile_prepare_enabled_(tile_prepare_enabled) { |
| DCHECK(context_provider_); |
| } |
| |
| GpuRasterizer::~GpuRasterizer() { |
| } |
| |
| PrepareTilesMode GpuRasterizer::GetPrepareTilesMode() { |
| return tile_prepare_enabled_ ? PrepareTilesMode::PREPARE_PRIORITIZED_TILES |
| : PrepareTilesMode::PREPARE_NONE; |
| } |
| |
| void GpuRasterizer::RasterizeTiles( |
| const TileVector& tiles, |
| ResourcePool* resource_pool, |
| const UpdateTileDrawInfoCallback& update_tile_draw_info) { |
| ScopedGpuRaster gpu_raster(context_provider_); |
| |
| ScopedResourceWriteLocks locks; |
| |
| for (Tile* tile : tiles) { |
| // TODO(hendrikw): Don't create resources for solid color tiles. |
| // See crbug.com/445919 |
| scoped_ptr<ScopedResource> resource = |
| resource_pool->AcquireResource(tile->desired_texture_size(), |
| resource_pool->default_format()); |
| const ScopedResource* const_resource = resource.get(); |
| |
| RasterSource::SolidColorAnalysis analysis; |
| |
| if (tile->use_picture_analysis()) |
| PerformSolidColorAnalysis(tile, &analysis); |
| |
| if (!analysis.is_solid_color) |
| AddToMultiPictureDraw(tile, const_resource, &locks); |
| |
| update_tile_draw_info.Run(tile, resource.Pass(), analysis); |
| } |
| |
| multi_picture_draw_.draw(); |
| } |
| |
| void GpuRasterizer::PerformSolidColorAnalysis( |
| const Tile* tile, |
| RasterSource::SolidColorAnalysis* analysis) { |
| const void* tile_id = static_cast<const void*>(tile); |
| frame_viewer_instrumentation::ScopedAnalyzeTask analyze_task( |
| tile_id, tile->combined_priority().resolution, |
| tile->source_frame_number(), tile->layer_id()); |
| |
| DCHECK(tile->raster_source()); |
| |
| tile->raster_source()->PerformSolidColorAnalysis( |
| tile->content_rect(), tile->contents_scale(), analysis); |
| |
| // Record the solid color prediction. |
| UMA_HISTOGRAM_BOOLEAN("Renderer4.SolidColorTilesAnalyzed", |
| analysis->is_solid_color); |
| } |
| |
| void GpuRasterizer::AddToMultiPictureDraw(const Tile* tile, |
| const ScopedResource* resource, |
| ScopedResourceWriteLocks* locks) { |
| const void* tile_id = static_cast<const void*>(tile); |
| frame_viewer_instrumentation::ScopedRasterTask raster_task( |
| tile_id, tile->combined_priority().resolution, |
| tile->source_frame_number(), tile->layer_id()); |
| |
| DCHECK(tile->raster_source()); |
| |
| // Turn on distance fields for layers that have ever animated. |
| bool use_distance_field_text = |
| use_distance_field_text_ || |
| tile->raster_source()->ShouldAttemptToUseDistanceFieldText(); |
| scoped_ptr<ResourceProvider::ScopedWriteLockGr> lock( |
| new ResourceProvider::ScopedWriteLockGr(resource_provider_, |
| resource->id())); |
| SkSurface* sk_surface = lock->GetSkSurface( |
| use_distance_field_text, tile->raster_source()->CanUseLCDText()); |
| |
| locks->push_back(lock.Pass()); |
| |
| if (!sk_surface) |
| return; |
| |
| SkRTreeFactory factory; |
| SkPictureRecorder recorder; |
| gfx::Size size = resource->size(); |
| const int flags = SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag; |
| skia::RefPtr<SkCanvas> canvas = skia::SharePtr( |
| recorder.beginRecording(size.width(), size.height(), &factory, flags)); |
| |
| canvas->save(); |
| tile->raster_source()->PlaybackToCanvas(canvas.get(), tile->content_rect(), |
| tile->contents_scale()); |
| canvas->restore(); |
| |
| // Add the canvas and recorded picture to |multi_picture_draw_|. |
| skia::RefPtr<SkPicture> picture = skia::AdoptRef(recorder.endRecording()); |
| multi_picture_draw_.add(sk_surface->getCanvas(), picture.get()); |
| } |
| |
| } // namespace cc |