cc/output/software_renderer.h

   1 // Copyright 2012 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_OUTPUT_SOFTWARE_RENDERER_H_
   6 #define CC_OUTPUT_SOFTWARE_RENDERER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "cc/base/cc_export.h"
  10 #include "cc/output/compositor_frame.h"
  11 #include "cc/output/direct_renderer.h"
  12
  13 namespace cc {
  14
  15 class OutputSurface;
  16 class RendererClient;
  17 class ResourceProvider;
  18 class SoftwareOutputDevice;
  19
  20 class CheckerboardDrawQuad;
  21 class DebugBorderDrawQuad;
  22 class PictureDrawQuad;
  23 class RenderPassDrawQuad;
  24 class SolidColorDrawQuad;
  25 class TextureDrawQuad;
  26 class TileDrawQuad;
  27
  28 class CC_EXPORT SoftwareRenderer : public DirectRenderer {
  29  public:
  30   static scoped_ptr<SoftwareRenderer> Create(
  31       RendererClient* client,
  32       const RendererSettings* settings,
  33       OutputSurface* output_surface,
  34       ResourceProvider* resource_provider);
  35
  36   ~SoftwareRenderer() override;
  37   const RendererCapabilitiesImpl& Capabilities() const override;
  38   void Finish() override;
  39   void SwapBuffers(const CompositorFrameMetadata& metadata) override;
  40   void ReceiveSwapBuffersAck(const CompositorFrameAck& ack) override;
  41   void DiscardBackbuffer() override;
  42   void EnsureBackbuffer() override;
  43
  44  protected:
  45   void BindFramebufferToOutputSurface(DrawingFrame* frame) override;
  46   bool BindFramebufferToTexture(DrawingFrame* frame,
  47                                 const ScopedResource* texture,
  48                                 const gfx::Rect& target_rect) override;
  49   void SetScissorTestRect(const gfx::Rect& scissor_rect) override;
  50   void PrepareSurfaceForPass(DrawingFrame* frame,
  51                              SurfaceInitializationMode initialization_mode,
  52                              const gfx::Rect& render_pass_scissor) override;
  53
  54   void DoDrawQuad(DrawingFrame* frame,
  55                   const DrawQuad* quad,
  56                   const gfx::QuadF* draw_region) override;
  57   void BeginDrawingFrame(DrawingFrame* frame) override;
  58   void FinishDrawingFrame(DrawingFrame* frame) override;
  59   bool FlippedFramebuffer(const DrawingFrame* frame) const override;
  60   void EnsureScissorTestEnabled() override;
  61   void EnsureScissorTestDisabled() override;
  62   void CopyCurrentRenderPassToBitmap(
  63       DrawingFrame* frame,
  64       scoped_ptr<CopyOutputRequest> request) override;
  65
  66   SoftwareRenderer(RendererClient* client,
  67                    const RendererSettings* settings,
  68                    OutputSurface* output_surface,
  69                    ResourceProvider* resource_provider);
  70
  71   void DidChangeVisibility() override;
  72
  73  private:
  74   void ClearCanvas(SkColor color);
  75   void ClearFramebuffer(DrawingFrame* frame);
  76   void SetClipRect(const gfx::Rect& rect);
  77   bool IsSoftwareResource(ResourceId resource_id) const;
  78
  79   void DrawCheckerboardQuad(const DrawingFrame* frame,
  80                             const CheckerboardDrawQuad* quad);
  81   void DrawDebugBorderQuad(const DrawingFrame* frame,
  82                            const DebugBorderDrawQuad* quad);
  83   void DrawPictureQuad(const DrawingFrame* frame,
  84                        const PictureDrawQuad* quad);
  85   void DrawRenderPassQuad(const DrawingFrame* frame,
  86                           const RenderPassDrawQuad* quad);
  87   void DrawSolidColorQuad(const DrawingFrame* frame,
  88                           const SolidColorDrawQuad* quad);
  89   void DrawTextureQuad(const DrawingFrame* frame,
  90                        const TextureDrawQuad* quad);
  91   void DrawTileQuad(const DrawingFrame* frame,
  92                     const TileDrawQuad* quad);
  93   void DrawUnsupportedQuad(const DrawingFrame* frame,
  94                            const DrawQuad* quad);
  95
  96   RendererCapabilitiesImpl capabilities_;
  97   bool is_scissor_enabled_;
  98   bool is_backbuffer_discarded_;
  99   gfx::Rect scissor_rect_;
 100
 101   SoftwareOutputDevice* output_device_;
 102   SkCanvas* root_canvas_;
 103   SkCanvas* current_canvas_;
 104   SkPaint current_paint_;
 105   scoped_ptr<ResourceProvider::ScopedWriteLockSoftware>
 106       current_framebuffer_lock_;
 107   skia::RefPtr<SkCanvas> current_framebuffer_canvas_;
 108   scoped_ptr<SoftwareFrameData> current_frame_data_;
 109
 110   DISALLOW_COPY_AND_ASSIGN(SoftwareRenderer);
 111 };
 112
 113 }  // namespace cc
 114
 115 #endif  // CC_OUTPUT_SOFTWARE_RENDERER_H_