Add CC software renderer.

cc/CCRendererSoftware.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 CCRendererSoftware_h
+#define CCRendererSoftware_h
+
+#include "CCDirectRenderer.h"
+#include "CCLayerTreeHost.h"
+#include <public/WebCompositorSoftwareOutputDevice.h>
+
+namespace cc {
+
+class CCDebugBorderDrawQuad;
+class CCRendererClient;
+class CCResourceProvider;
+class CCSolidColorDrawQuad;
+class CCTextureDrawQuad;
+class CCTileDrawQuad;
+
+class CCRendererSoftware : public CCDirectRenderer {
+    WTF_MAKE_NONCOPYABLE(CCRendererSoftware);
+public:
+    static PassOwnPtr<CCRendererSoftware> create(CCRendererClient*, CCResourceProvider*, WebKit::WebCompositorSoftwareOutputDevice*);
+    virtual ~CCRendererSoftware();
+
+    virtual const RendererCapabilities& capabilities() const OVERRIDE;
+
+    virtual void viewportChanged() OVERRIDE;
+
+    virtual void finish() OVERRIDE;
+
+    virtual bool swapBuffers() OVERRIDE;
+
+    virtual void getFramebufferPixels(void *pixels, const IntRect&) OVERRIDE;
+
+    virtual void setVisible(bool) OVERRIDE;
+
+protected:
+    virtual void bindFramebufferToOutputSurface(DrawingFrame&) OVERRIDE;
+    virtual bool bindFramebufferToTexture(DrawingFrame&, const CCScopedTexture*, const IntRect& framebufferRect) OVERRIDE;
+    virtual void setDrawViewportSize(const IntSize&) OVERRIDE;
+    virtual void enableScissorTestRect(const IntRect& scissorRect) OVERRIDE;
+    virtual void disableScissorTest() OVERRIDE;
+    virtual void clearFramebuffer(DrawingFrame&) OVERRIDE;
+    virtual void drawQuad(DrawingFrame&, const CCDrawQuad*) OVERRIDE;
+    virtual void beginDrawingFrame(DrawingFrame&) OVERRIDE;
+    virtual void finishDrawingFrame(DrawingFrame&) OVERRIDE;
+    virtual bool flippedFramebuffer() const OVERRIDE;
+
+private:
+    CCRendererSoftware(CCRendererClient*, CCResourceProvider*, WebKit::WebCompositorSoftwareOutputDevice*);
+
+    bool isSoftwareResource(CCResourceProvider::ResourceId) const;
+
+    void drawDebugBorderQuad(const DrawingFrame&, const CCDebugBorderDrawQuad*);
+    void drawSolidColorQuad(const DrawingFrame&, const CCSolidColorDrawQuad*);
+    void drawTextureQuad(const DrawingFrame&, const CCTextureDrawQuad*);
+    void drawTileQuad(const DrawingFrame&, const CCTileDrawQuad*);
+    void drawUnsupportedQuad(const DrawingFrame&, const CCDrawQuad*);
+
+    RendererCapabilities m_capabilities;
+    bool m_visible;
+
+    WebKit::WebCompositorSoftwareOutputDevice* m_outputDevice;
+    SkCanvas m_skRootCanvas;
+    SkCanvas* m_skCurrentCanvas;
+    SkPaint m_skCurrentPaint;
+    OwnPtr<CCResourceProvider::ScopedWriteLockSoftware> m_currentFramebufferLock;
+};
+
+}
+
+#endif