Chromium -> Mojo roll.

cc/output/direct_renderer.h

 // Copyright 2012 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_DIRECT_RENDERER_H_
 #define CC_OUTPUT_DIRECT_RENDERER_H_
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/containers/scoped_ptr_hash_map.h"
@@ skipping 45 matching lines @@
 
     bool disable_picture_quad_image_filtering;
 
     OverlayCandidateList overlay_list;
   };
 
   void SetEnlargePassTextureAmountForTesting(const gfx::Vector2d& amount);
   void DoDrawPolygon(const DrawPolygon& poly,
                      DrawingFrame* frame,
                      const gfx::Rect& render_pass_scissor,
-                     bool using_scissor_as_optimization);
+                     bool use_render_pass_scissor);
 
  protected:
+  enum SurfaceInitializationMode {
+    SURFACE_INITIALIZATION_MODE_PRESERVE,
+    SURFACE_INITIALIZATION_MODE_SCISSORED_CLEAR,
+    SURFACE_INITIALIZATION_MODE_FULL_SURFACE_CLEAR,
+  };
+
   DirectRenderer(RendererClient* client,
                  const RendererSettings* settings,
                  OutputSurface* output_surface,
                  ResourceProvider* resource_provider);
 
   static gfx::RectF QuadVertexRect();
   static void QuadRectTransform(gfx::Transform* quad_rect_transform,
                                 const gfx::Transform& quad_transform,
                                 const gfx::RectF& quad_rect);
   void InitializeViewport(DrawingFrame* frame,
                           const gfx::Rect& draw_rect,
                           const gfx::Rect& viewport_rect,
                           const gfx::Size& surface_size);
   gfx::Rect MoveFromDrawToWindowSpace(const DrawingFrame* frame,
                                       const gfx::Rect& draw_rect) const;
 
   bool NeedDeviceClip(const DrawingFrame* frame) const;
-  gfx::Rect DeviceClipRectInWindowSpace(const DrawingFrame* frame) const;
+  gfx::Rect DeviceClipRectInDrawSpace(const DrawingFrame* frame) const;
+  gfx::Rect DeviceViewportRectInDrawSpace(const DrawingFrame* frame) const;
+  gfx::Rect OutputSurfaceRectInDrawSpace(const DrawingFrame* frame) const;
   static gfx::Rect ComputeScissorRectForRenderPass(const DrawingFrame* frame);
-  void SetScissorStateForQuad(const DrawingFrame* frame, const DrawQuad& quad);
+  void SetScissorStateForQuad(const DrawingFrame* frame,
+                              const DrawQuad& quad,
+                              const gfx::Rect& render_pass_scissor,
+                              bool use_render_pass_scissor);
   bool ShouldSkipQuad(const DrawQuad& quad,
                       const gfx::Rect& render_pass_scissor);
-  void SetScissorStateForQuadWithRenderPassScissor(
-      const DrawingFrame* frame,
-      const DrawQuad& quad,
-      const gfx::Rect& render_pass_scissor);
   void SetScissorTestRectInDrawSpace(const DrawingFrame* frame,
                                      const gfx::Rect& draw_space_rect);
 
   static gfx::Size RenderPassTextureSize(const RenderPass* render_pass);
 
   void FlushPolygons(ScopedPtrDeque<DrawPolygon>* poly_list,
                      DrawingFrame* frame,
                      const gfx::Rect& render_pass_scissor,
-                     bool using_scissor_as_optimization);
+                     bool use_render_pass_scissor);
   void DrawRenderPass(DrawingFrame* frame, const RenderPass* render_pass);
   bool UseRenderPass(DrawingFrame* frame, const RenderPass* render_pass);
 
   virtual void BindFramebufferToOutputSurface(DrawingFrame* frame) = 0;
   virtual bool BindFramebufferToTexture(DrawingFrame* frame,
                                         const ScopedResource* resource,
                                         const gfx::Rect& target_rect) = 0;
   virtual void SetDrawViewport(const gfx::Rect& window_space_viewport) = 0;
   virtual void SetScissorTestRect(const gfx::Rect& scissor_rect) = 0;
-  virtual void DiscardPixels(bool has_external_stencil_test,
-                             bool draw_rect_covers_full_surface) = 0;
-  virtual void ClearFramebuffer(DrawingFrame* frame,
-                                bool has_external_stencil_test) = 0;
+  virtual void PrepareSurfaceForPass(
+      DrawingFrame* frame,
+      SurfaceInitializationMode initialization_mode,
+      const gfx::Rect& render_pass_scissor) = 0;
   // clip_region is a (possibly null) pointer to a quad in the same
   // space as the quad. When non-null only the area of the quad that overlaps
   // with clip_region will be drawn.
   virtual void DoDrawQuad(DrawingFrame* frame,
                           const DrawQuad* quad,
                           const gfx::QuadF* clip_region) = 0;
   virtual void BeginDrawingFrame(DrawingFrame* frame) = 0;
   virtual void FinishDrawingFrame(DrawingFrame* frame) = 0;
   virtual void FinishDrawingQuadList();
   virtual bool FlippedFramebuffer(const DrawingFrame* frame) const = 0;
@@ skipping 22 matching lines @@
 
  private:
   gfx::Vector2d enlarge_pass_texture_amount_;
 
   DISALLOW_COPY_AND_ASSIGN(DirectRenderer);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_DIRECT_RENDERER_H_