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