Add CC software renderer.

cc/CCRendererSoftware.h

Index: cc/CCRendererSoftware.h
diff --git a/cc/CCRendererSoftware.h b/cc/CCRendererSoftware.h
new file mode 100644
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+++ b/cc/CCRendererSoftware.h
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+/*
+ * Copyright (C) 2012 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef CCRendererSoftware_h
+#define CCRendererSoftware_h
+
+#include "CCDirectRenderer.h"
+#include "CCLayerTreeHost.h"
+#include "TextureCopier.h"
+#include "TextureUploader.h"
+#include <public/WebCompositorOutputSurfaceSoftware.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::WebCompositorOutputSurfaceSoftware*);
+    virtual ~CCRendererSoftware();
+
+    virtual const RendererCapabilities& capabilities() const OVERRIDE { return m_capabilities; }
+
+    virtual void viewportChanged() OVERRIDE;
+
+    virtual void finish() OVERRIDE;
+
+    virtual bool swapBuffers() OVERRIDE;
+
+    virtual void getFramebufferPixels(void *pixels, const IntRect&) OVERRIDE;
+
+    virtual TextureCopier* textureCopier() const OVERRIDE { return m_textureCopier.get(); }
+    virtual TextureUploader* textureUploader() const OVERRIDE { return m_textureUploader.get(); }
+
+    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 { return false; }
+
+private:
+    CCRendererSoftware(CCRendererClient*, CCResourceProvider*, WebKit::WebCompositorOutputSurfaceSoftware*);
+
+    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;
+
+    OwnPtr<TextureCopier> m_textureCopier;
+    OwnPtr<TextureUploader> m_textureUploader;
+
+    WebKit::WebCompositorOutputSurfaceSoftware* m_outputSurface;
+    SkCanvas m_skRootCanvas;
+    SkCanvas* m_skCurrentCanvas;
+    SkPaint m_skCurrentPaint;
+    OwnPtr<CCResourceProvider::ScopedWriteLockSoftware> m_currentFramebufferLock;
+};
+
+}
+
+#endif