Revert "Delete CC."

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"
+#include "cc/base/scoped_ptr_deque.h"
+#include "cc/output/overlay_processor.h"
+#include "cc/output/renderer.h"
+#include "cc/resources/resource_provider.h"
+#include "cc/resources/scoped_resource.h"
+#include "ui/gfx/geometry/quad_f.h"
+
+namespace cc {
+
+class DrawPolygon;
+class ResourceProvider;
+
+// This is the base class for code shared between the GL and software
+// renderer implementations.  "Direct" refers to the fact that it does not
+// delegate rendering to another compositor.
+class DirectRenderer : public Renderer {
+ public:
+  ~DirectRenderer() override;
+
+  void DecideRenderPassAllocationsForFrame(
+      const RenderPassList& render_passes_in_draw_order) override;
+  bool HasAllocatedResourcesForTesting(RenderPassId id) const override;
+  void DrawFrame(RenderPassList* render_passes_in_draw_order,
+                 float device_scale_factor,
+                 const gfx::Rect& device_viewport_rect,
+                 const gfx::Rect& device_clip_rect,
+                 bool disable_picture_quad_image_filtering) override;
+
+  struct DrawingFrame {
+    DrawingFrame();
+    ~DrawingFrame();
+
+    const RenderPassList* render_passes_in_draw_order;
+    const RenderPass* root_render_pass;
+    const RenderPass* current_render_pass;
+    const ScopedResource* current_texture;
+
+    gfx::Rect root_damage_rect;
+    gfx::Rect device_viewport_rect;
+    gfx::Rect device_clip_rect;
+
+    gfx::Transform projection_matrix;
+    gfx::Transform window_matrix;
+
+    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 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 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,
+                              const gfx::Rect& render_pass_scissor,
+                              bool use_render_pass_scissor);
+  bool ShouldSkipQuad(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 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 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;
+  virtual void EnsureScissorTestEnabled() = 0;
+  virtual void EnsureScissorTestDisabled() = 0;
+  virtual void DiscardBackbuffer() {}
+  virtual void EnsureBackbuffer() {}
+
+  virtual void CopyCurrentRenderPassToBitmap(
+      DrawingFrame* frame,
+      scoped_ptr<CopyOutputRequest> request) = 0;
+
+  base::ScopedPtrHashMap<RenderPassId, scoped_ptr<ScopedResource>> render_pass_textures_;
+  OutputSurface* output_surface_;
+  ResourceProvider* resource_provider_;
+  scoped_ptr<OverlayProcessor> overlay_processor_;
+
+  // For use in coordinate conversion, this stores the output rect, viewport
+  // rect (= unflipped version of glViewport rect), and the size of target
+  // framebuffer. During a draw, this stores the values for the current render
+  // pass; in between draws, they retain the values for the root render pass of
+  // the last draw.
+  gfx::Rect current_draw_rect_;
+  gfx::Rect current_viewport_rect_;
+  gfx::Size current_surface_size_;
+
+ private:
+  gfx::Vector2d enlarge_pass_texture_amount_;
+
+  DISALLOW_COPY_AND_ASSIGN(DirectRenderer);
+};
+
+}  // namespace cc
+
+#endif  // CC_OUTPUT_DIRECT_RENDERER_H_