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// 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 CCDirectRenderer_h
#define CCDirectRenderer_h
#include "base/basictypes.h"
#include "CCRenderer.h"
#include "CCResourceProvider.h"
#include "CCScopedTexture.h"
namespace cc {
class CCResourceProvider;
// 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 CCDirectRenderer : public CCRenderer {
public:
virtual ~CCDirectRenderer();
CCResourceProvider* resourceProvider() const { return m_resourceProvider; }
virtual void decideRenderPassAllocationsForFrame(const CCRenderPassList& renderPassesInDrawOrder) OVERRIDE;
virtual bool haveCachedResourcesForRenderPassId(CCRenderPass::Id) const OVERRIDE;
virtual void drawFrame(const CCRenderPassList& renderPassesInDrawOrder, const CCRenderPassIdHashMap& renderPassesById) OVERRIDE;
protected:
CCDirectRenderer(CCRendererClient* client, CCResourceProvider* resourceProvider);
struct DrawingFrame {
DrawingFrame();
~DrawingFrame();
const CCRenderPassIdHashMap* renderPassesById;
const CCRenderPass* rootRenderPass;
const CCRenderPass* currentRenderPass;
const CCScopedTexture* currentTexture;
gfx::RectF rootDamageRect;
WebKit::WebTransformationMatrix projectionMatrix;
WebKit::WebTransformationMatrix windowMatrix;
bool flippedY;
gfx::RectF scissorRectInRenderPassSpace;
};
class CachedTexture : public CCScopedTexture {
public:
static scoped_ptr<CachedTexture> create(CCResourceProvider* resourceProvider) {
return make_scoped_ptr(new CachedTexture(resourceProvider));
}
virtual ~CachedTexture() {}
bool isComplete() const { return m_isComplete; }
void setIsComplete(bool isComplete) { m_isComplete = isComplete; }
protected:
explicit CachedTexture(CCResourceProvider* resourceProvider)
: CCScopedTexture(resourceProvider)
, m_isComplete(false)
{
}
private:
bool m_isComplete;
DISALLOW_COPY_AND_ASSIGN(CachedTexture);
};
static FloatRect quadVertexRect();
static void quadRectTransform(WebKit::WebTransformationMatrix* quadRectTransform, const WebKit::WebTransformationMatrix& quadTransform, const gfx::RectF& quadRect);
static void initializeMatrices(DrawingFrame&, const gfx::Rect& drawRect, bool flipY);
static gfx::Rect moveScissorToWindowSpace(const DrawingFrame&, gfx::RectF scissorRect);
bool haveCachedResources(CCRenderPass::Id) const;
static IntSize renderPassTextureSize(const CCRenderPass*);
static GLenum renderPassTextureFormat(const CCRenderPass*);
void drawRenderPass(DrawingFrame&, const CCRenderPass*);
bool useRenderPass(DrawingFrame&, const CCRenderPass*);
virtual void bindFramebufferToOutputSurface(DrawingFrame&) = 0;
virtual bool bindFramebufferToTexture(DrawingFrame&, const CCScopedTexture*, const gfx::Rect& framebufferRect) = 0;
virtual void setDrawViewportSize(const gfx::Size&) = 0;
virtual void enableScissorTestRect(const gfx::Rect& scissorRect) = 0;
virtual void disableScissorTest() = 0;
virtual void clearFramebuffer(DrawingFrame&) = 0;
virtual void drawQuad(DrawingFrame&, const CCDrawQuad*) = 0;
virtual void beginDrawingFrame(DrawingFrame&) = 0;
virtual void finishDrawingFrame(DrawingFrame&) = 0;
virtual bool flippedFramebuffer() const = 0;
ScopedPtrHashMap<CCRenderPass::Id, CachedTexture> m_renderPassTextures;
CCResourceProvider* m_resourceProvider;
private:
DISALLOW_COPY_AND_ASSIGN(CCDirectRenderer);
};
} // namespace cc
#endif // CCDirectRenderer_h
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