Splitting of layers for correct intersections

cc/output/gl_renderer.h

 // Copyright 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_OUTPUT_GL_RENDERER_H_
 #define CC_OUTPUT_GL_RENDERER_H_
 
 #include "base/cancelable_callback.h"
 #include "cc/base/cc_export.h"
 #include "cc/base/scoped_ptr_deque.h"
@@ skipping 22 matching lines @@
 namespace cc {
 
 class GLRendererShaderTest;
 class OutputSurface;
 class PictureDrawQuad;
 class ScopedResource;
 class StreamVideoDrawQuad;
 class TextureDrawQuad;
 class TextureMailboxDeleter;
 class GeometryBinding;
+class GeometryBindingQuad;
 class ScopedEnsureFramebufferAllocation;
 
 // Class that handles drawing of composited render layers using GL.
 class CC_EXPORT GLRenderer : public DirectRenderer {
  public:
   class ScopedUseGrContext;
 
   static scoped_ptr<GLRenderer> Create(
       RendererClient* client,
       const LayerTreeSettings* settings,
@@ skipping 51 matching lines @@
   virtual void BindFramebufferToOutputSurface(DrawingFrame* frame) OVERRIDE;
   virtual bool BindFramebufferToTexture(DrawingFrame* frame,
                                         const ScopedResource* resource,
                                         const gfx::Rect& target_rect) OVERRIDE;
   virtual void SetDrawViewport(const gfx::Rect& window_space_viewport) OVERRIDE;
   virtual void SetScissorTestRect(const gfx::Rect& scissor_rect) OVERRIDE;
   virtual void DiscardPixels(bool has_external_stencil_test,
                              bool draw_rect_covers_full_surface) OVERRIDE;
   virtual void ClearFramebuffer(DrawingFrame* frame,
                                 bool has_external_stencil_test) OVERRIDE;
-  virtual void DoDrawQuad(DrawingFrame* frame, const class DrawQuad*) OVERRIDE;
+  virtual void DoDrawQuad(DrawingFrame* frame,
+                          const class DrawQuad*,
+                          const gfx::QuadF* draw_region = NULL) OVERRIDE;
   virtual void BeginDrawingFrame(DrawingFrame* frame) OVERRIDE;
   virtual void FinishDrawingFrame(DrawingFrame* frame) OVERRIDE;
   virtual bool FlippedFramebuffer() const OVERRIDE;
   virtual void EnsureScissorTestEnabled() OVERRIDE;
   virtual void EnsureScissorTestDisabled() OVERRIDE;
   virtual void CopyCurrentRenderPassToBitmap(
       DrawingFrame* frame,
       scoped_ptr<CopyOutputRequest> request) OVERRIDE;
   virtual void FinishDrawingQuadList() OVERRIDE;
 
   // Check if quad needs antialiasing and if so, inflate the quad and
   // fill edge array for fragment shader.  local_quad is set to
   // inflated quad if antialiasing is required, otherwise it is left
   // unchanged.  edge array is filled with inflated quad's edge data
   // if antialiasing is required, otherwise it is left unchanged.
   // Returns true if quad requires antialiasing and false otherwise.
   static bool SetupQuadForAntialiasing(const gfx::Transform& device_transform,
                                        const DrawQuad* quad,
                                        gfx::QuadF* local_quad,
                                        float edge[24]);
 
  private:
   friend class GLRendererShaderPixelTest;
   friend class GLRendererShaderTest;
 
   static void ToGLMatrix(float* gl_matrix, const gfx::Transform& transform);
 
   void DrawCheckerboardQuad(const DrawingFrame* frame,
-                            const CheckerboardDrawQuad* quad);
+                            const CheckerboardDrawQuad* quad,
+                            const gfx::QuadF* clip_region);
   void DrawDebugBorderQuad(const DrawingFrame* frame,
                            const DebugBorderDrawQuad* quad);
   scoped_ptr<ScopedResource> GetBackgroundWithFilters(
       DrawingFrame* frame,
       const RenderPassDrawQuad* quad,
       const gfx::Transform& contents_device_transform,
       const gfx::Transform& contents_device_transformInverse,
       bool* background_changed);
-  void DrawRenderPassQuad(DrawingFrame* frame, const RenderPassDrawQuad* quad);
+  void DrawRenderPassQuad(DrawingFrame* frame,
+                          const RenderPassDrawQuad* quad,
+                          const gfx::QuadF* clip_region);
   void DrawSolidColorQuad(const DrawingFrame* frame,
-                          const SolidColorDrawQuad* quad);
+                          const SolidColorDrawQuad* quad,
+                          const gfx::QuadF* clip_region);
   void DrawStreamVideoQuad(const DrawingFrame* frame,
-                           const StreamVideoDrawQuad* quad);
+                           const StreamVideoDrawQuad* quad,
+                           const gfx::QuadF* clip_region);
+  void DrawTextureQuad(const DrawingFrame* frame,
+                       const TextureDrawQuad* quad,
+                       const gfx::QuadF* clip_region);
   void EnqueueTextureQuad(const DrawingFrame* frame,
-                          const TextureDrawQuad* quad);
-  void FlushTextureQuadCache();
+                          const TextureDrawQuad* quad,
+                          const gfx::QuadF* clip_region);
+  void FlushTextureQuadCache(bool using_clip_region);
   void DrawIOSurfaceQuad(const DrawingFrame* frame,
-                         const IOSurfaceDrawQuad* quad);
-  void DrawTileQuad(const DrawingFrame* frame, const TileDrawQuad* quad);
+                         const IOSurfaceDrawQuad* quad,
+                         const gfx::QuadF* clip_region);
+  void DrawTileQuad(const DrawingFrame* frame,
+                    const TileDrawQuad* quad,
+                    const gfx::QuadF* clip_region);
   void DrawContentQuad(const DrawingFrame* frame,
                        const ContentDrawQuadBase* quad,
-                       ResourceProvider::ResourceId resource_id);
+                       ResourceProvider::ResourceId resource_id,
+                       const gfx::QuadF* clip_region);
   void DrawYUVVideoQuad(const DrawingFrame* frame,
-                        const YUVVideoDrawQuad* quad);
+                        const YUVVideoDrawQuad* quad,
+                        const gfx::QuadF* clip_region);
   void DrawPictureQuad(const DrawingFrame* frame,
-                       const PictureDrawQuad* quad);
+                       const PictureDrawQuad* quad,
+                       const gfx::QuadF* clip_region);
 
   void SetShaderOpacity(float opacity, int alpha_location);
   void SetShaderQuadF(const gfx::QuadF& quad, int quad_location);
+  void DrawQuadGeometryClippedByQuadF(const DrawingFrame* frame,
+                                      const gfx::Transform& draw_transform,
+                                      const gfx::RectF& quad_rect,
+                                      const gfx::QuadF& clipping_region_quad,
+                                      int matrix_location);
   void DrawQuadGeometry(const DrawingFrame* frame,
                         const gfx::Transform& draw_transform,
                         const gfx::RectF& quad_rect,
                         int matrix_location);
   void SetUseProgram(unsigned program);
 
   void CopyTextureToFramebuffer(const DrawingFrame* frame,
                                 int texture_id,
                                 const gfx::Rect& rect,
                                 const gfx::Transform& draw_matrix,
@@ skipping 28 matching lines @@
   typedef ScopedPtrVector<ResourceProvider::ScopedReadLockGL>
       OverlayResourceLockList;
   OverlayResourceLockList pending_overlay_resources_;
   OverlayResourceLockList in_use_overlay_resources_;
 
   RendererCapabilitiesImpl capabilities_;
 
   unsigned offscreen_framebuffer_id_;
 
   scoped_ptr<GeometryBinding> shared_geometry_;
+  scoped_ptr<GeometryBindingQuad> clipped_geometry_;
   gfx::QuadF shared_geometry_quad_;
 
   // This block of bindings defines all of the programs used by the compositor
   // itself.  Add any new programs here to GLRendererShaderTest.
 
   // Tiled layer shaders.
   typedef ProgramBinding<VertexShaderTile, FragmentShaderRGBATexAlpha>
       TileProgram;
   typedef ProgramBinding<VertexShaderTileAA, FragmentShaderRGBATexClampAlphaAA>
       TileProgramAA;
@@ skipping 202 matching lines @@
 #if DEBUG_GL_CALLS && !defined(NDEBUG)
 #define GLC(context, x)                                                        \
   (x, GLRenderer::DebugGLCall(&* context, #x, __FILE__, __LINE__))
 #else
 #define GLC(context, x) (x)
 #endif
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_GL_RENDERER_H_