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 SetDrawViewport(const gfx::Rect& window_space_viewport) override;
  50   void SetScissorTestRect(const gfx::Rect& scissor_rect) override;
  51   void DiscardPixels(bool has_external_stencil_test,
  52                      bool draw_rect_covers_full_surface) override;
  53   void ClearFramebuffer(DrawingFrame* frame,
  54                         bool has_external_stencil_test) override;
  55
  56   void DoDrawQuad(DrawingFrame* frame,
  57                   const DrawQuad* quad,
  58                   const gfx::QuadF* draw_region) override;
  59   void BeginDrawingFrame(DrawingFrame* frame) override;
  60   void FinishDrawingFrame(DrawingFrame* frame) override;
  61   bool FlippedFramebuffer(const DrawingFrame* frame) const override;
  62   void EnsureScissorTestEnabled() override;
  63   void EnsureScissorTestDisabled() override;
  64   void CopyCurrentRenderPassToBitmap(
  65       DrawingFrame* frame,
  66       scoped_ptr<CopyOutputRequest> request) override;
  67
  68   SoftwareRenderer(RendererClient* client,
  69                    const RendererSettings* settings,
  70                    OutputSurface* output_surface,
  71                    ResourceProvider* resource_provider);
  72
  73   void DidChangeVisibility() override;
  74
  75  private:
  76   void ClearCanvas(SkColor color);
  77   void SetClipRect(const gfx::Rect& rect);
  78   bool IsSoftwareResource(ResourceProvider::ResourceId resource_id) const;
  79
  80   void DrawCheckerboardQuad(const DrawingFrame* frame,
  81                             const CheckerboardDrawQuad* quad);
  82   void DrawDebugBorderQuad(const DrawingFrame* frame,
  83                            const DebugBorderDrawQuad* quad);
  84   void DrawPictureQuad(const DrawingFrame* frame,
  85                        const PictureDrawQuad* quad);
  86   void DrawRenderPassQuad(const DrawingFrame* frame,
  87                           const RenderPassDrawQuad* quad);
  88   void DrawSolidColorQuad(const DrawingFrame* frame,
  89                           const SolidColorDrawQuad* quad);
  90   void DrawTextureQuad(const DrawingFrame* frame,
  91                        const TextureDrawQuad* quad);
  92   void DrawTileQuad(const DrawingFrame* frame,
  93                     const TileDrawQuad* quad);
  94   void DrawUnsupportedQuad(const DrawingFrame* frame,
  95                            const DrawQuad* quad);
  96
  97   RendererCapabilitiesImpl capabilities_;
  98   bool is_scissor_enabled_;
  99   bool is_backbuffer_discarded_;
 100   gfx::Rect scissor_rect_;
 101
 102   SoftwareOutputDevice* output_device_;
 103   SkCanvas* root_canvas_;
 104   SkCanvas* current_canvas_;
 105   SkPaint current_paint_;
 106   scoped_ptr<ResourceProvider::ScopedWriteLockSoftware>
 107       current_framebuffer_lock_;
 108   skia::RefPtr<SkCanvas> current_framebuffer_canvas_;
 109   scoped_ptr<SoftwareFrameData> current_frame_data_;
 110
 111   DISALLOW_COPY_AND_ASSIGN(SoftwareRenderer);
 112 };
 113
 114 }  // namespace cc
 115
 116 #endif  // CC_OUTPUT_SOFTWARE_RENDERER_H_