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   virtual ~SoftwareRenderer();
  37   virtual const RendererCapabilitiesImpl& Capabilities() const OVERRIDE;
  38   virtual void Finish() OVERRIDE;
  39   virtual void SwapBuffers(const CompositorFrameMetadata& metadata) OVERRIDE;
  40   virtual void ReceiveSwapBuffersAck(
  41       const CompositorFrameAck& ack) OVERRIDE;
  42   virtual void DiscardBackbuffer() OVERRIDE;
  43   virtual void EnsureBackbuffer() OVERRIDE;
  44
  45  protected:
  46   virtual void BindFramebufferToOutputSurface(DrawingFrame* frame) OVERRIDE;
  47   virtual bool BindFramebufferToTexture(
  48       DrawingFrame* frame,
  49       const ScopedResource* texture,
  50       const gfx::Rect& target_rect) OVERRIDE;
  51   virtual void SetDrawViewport(const gfx::Rect& window_space_viewport) OVERRIDE;
  52   virtual void SetScissorTestRect(const gfx::Rect& scissor_rect) OVERRIDE;
  53   virtual void DiscardPixels(bool has_external_stencil_test,
  54                              bool draw_rect_covers_full_surface) OVERRIDE;
  55   virtual void ClearFramebuffer(DrawingFrame* frame,
  56                                 bool has_external_stencil_test) OVERRIDE;
  57   virtual void DoDrawQuad(DrawingFrame* frame, const DrawQuad* quad) OVERRIDE;
  58   virtual void BeginDrawingFrame(DrawingFrame* frame) OVERRIDE;
  59   virtual void FinishDrawingFrame(DrawingFrame* frame) OVERRIDE;
  60   virtual bool FlippedFramebuffer() const OVERRIDE;
  61   virtual void EnsureScissorTestEnabled() OVERRIDE;
  62   virtual void EnsureScissorTestDisabled() OVERRIDE;
  63   virtual void CopyCurrentRenderPassToBitmap(
  64       DrawingFrame* frame,
  65       scoped_ptr<CopyOutputRequest> request) OVERRIDE;
  66
  67   SoftwareRenderer(RendererClient* client,
  68                    const LayerTreeSettings* settings,
  69                    OutputSurface* output_surface,
  70                    ResourceProvider* resource_provider);
  71
  72   virtual void DidChangeVisibility() OVERRIDE;
  73
  74  private:
  75   void ClearCanvas(SkColor color);
  76   void SetClipRect(const gfx::Rect& rect);
  77   bool IsSoftwareResource(ResourceProvider::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   scoped_ptr<SoftwareFrameData> current_frame_data_;
 108
 109   DISALLOW_COPY_AND_ASSIGN(SoftwareRenderer);
 110 };
 111
 112 }  // namespace cc
 113
 114 #endif  // CC_OUTPUT_SOFTWARE_RENDERER_H_