cc/resources/gpu_rasterizer.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CC_RESOURCES_GPU_RASTERIZER_H_
   6 #define CC_RESOURCES_GPU_RASTERIZER_H_
   7
   8 #include <vector>
   9
  10 #include "cc/base/cc_export.h"
  11 #include "cc/resources/rasterizer.h"
  12 #include "cc/resources/resource_pool.h"
  13 #include "cc/resources/tile.h"
  14 #include "third_party/skia/include/core/SkMultiPictureDraw.h"
  15
  16 namespace cc {
  17
  18 class ContextProvider;
  19 class ResourceProvider;
  20
  21 class CC_EXPORT GpuRasterizer : public Rasterizer {
  22  public:
  23   ~GpuRasterizer() override;
  24
  25   static scoped_ptr<GpuRasterizer> Create(
  26       ContextProvider* context_provider,
  27       ResourceProvider* resource_provider,
  28       bool use_distance_field_text,
  29       bool threaded_gpu_rasterization_enabled,
  30       int msaa_sample_count);
  31
  32   // Overriden from Rasterizer.
  33   PrepareTilesMode GetPrepareTilesMode() override;
  34   void RasterizeTiles(
  35       const TileVector& tiles,
  36       ResourcePool* resource_pool,
  37       ResourceFormat resource_format,
  38       const UpdateTileDrawInfoCallback& update_tile_draw_info) override;
  39
  40   void RasterizeSource(bool use_worker_context,
  41                        ResourceProvider::ScopedWriteLockGr* write_lock,
  42                        const RasterSource* raster_source,
  43                        const gfx::Rect& rect,
  44                        float scale);
  45
  46   ResourceProvider* resource_provider() { return resource_provider_; }
  47
  48  private:
  49   GpuRasterizer(ContextProvider* context_provider,
  50                 ResourceProvider* resource_provider,
  51                 bool use_distance_filed_text,
  52                 bool threaded_gpu_rasterization_enabled,
  53                 int msaa_sample_count);
  54
  55   using ScopedResourceWriteLocks =
  56       ScopedPtrVector<ResourceProvider::ScopedWriteLockGr>;
  57
  58   ContextProvider* GetContextProvider(bool worker_context);
  59   void PerformSolidColorAnalysis(const Tile* tile,
  60                                  RasterSource::SolidColorAnalysis* analysis);
  61   void AddToMultiPictureDraw(const Tile* tile,
  62                              const ScopedResource* resource,
  63                              ScopedResourceWriteLocks* locks);
  64
  65   ResourceProvider* resource_provider_;
  66   SkMultiPictureDraw multi_picture_draw_;
  67
  68   bool use_distance_field_text_;
  69   bool threaded_gpu_rasterization_enabled_;
  70   int msaa_sample_count_;
  71
  72   DISALLOW_COPY_AND_ASSIGN(GpuRasterizer);
  73 };
  74
  75 }  // namespace cc
  76
  77 #endif  // CC_RESOURCES_GPU_RASTERIZER_H_