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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 CC_DIRECT_RENDERER_H_
#define CC_DIRECT_RENDERER_H_
#include "base/basictypes.h"
#include "cc/cc_export.h"
#include "cc/renderer.h"
#include "cc/resource_provider.h"
#include "cc/scoped_resource.h"
namespace cc {
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 CC_EXPORT DirectRenderer : public Renderer {
public:
virtual ~DirectRenderer();
ResourceProvider* resourceProvider() const { return m_resourceProvider; }
virtual void decideRenderPassAllocationsForFrame(const RenderPassList& renderPassesInDrawOrder) OVERRIDE;
virtual bool haveCachedResourcesForRenderPassId(RenderPass::Id) const OVERRIDE;
virtual void drawFrame(RenderPassList& renderPassesInDrawOrder) OVERRIDE;
struct CC_EXPORT DrawingFrame {
DrawingFrame();
~DrawingFrame();
const RenderPass* rootRenderPass;
const RenderPass* currentRenderPass;
const ScopedResource* currentTexture;
gfx::RectF rootDamageRect;
gfx::Transform projectionMatrix;
gfx::Transform windowMatrix;
bool flippedY;
};
void setEnlargePassTextureAmountForTesting(gfx::Vector2d amount);
protected:
DirectRenderer(RendererClient* client, ResourceProvider* resourceProvider);
class CachedResource : public ScopedResource {
public:
static scoped_ptr<CachedResource> create(ResourceProvider* resourceProvider) {
return make_scoped_ptr(new CachedResource(resourceProvider));
}
virtual ~CachedResource() {}
bool isComplete() const { return m_isComplete; }
void setIsComplete(bool isComplete) { m_isComplete = isComplete; }
protected:
explicit CachedResource(ResourceProvider* resourceProvider)
: ScopedResource(resourceProvider)
, m_isComplete(false)
{
}
private:
bool m_isComplete;
DISALLOW_COPY_AND_ASSIGN(CachedResource);
};
static gfx::RectF quadVertexRect();
static void quadRectTransform(gfx::Transform* quadRectTransform, const gfx::Transform& quadTransform, const gfx::RectF& quadRect);
static void initializeMatrices(DrawingFrame&, const gfx::Rect& drawRect, bool flipY);
static gfx::Rect moveScissorToWindowSpace(const DrawingFrame&, gfx::RectF scissorRect);
static gfx::RectF computeScissorRectForRenderPass(const DrawingFrame& frame);
void setScissorStateForQuad(const DrawingFrame& frame, const DrawQuad& quad);
void setScissorStateForQuadWithRenderPassScissor(const DrawingFrame& frame, const DrawQuad& quad, const gfx::RectF& renderPassScissor, bool* shouldSkipQuad);
bool haveCachedResources(RenderPass::Id) const;
static gfx::Size renderPassTextureSize(const RenderPass*);
static GLenum renderPassTextureFormat(const RenderPass*);
void drawRenderPass(DrawingFrame&, const RenderPass*);
bool useRenderPass(DrawingFrame&, const RenderPass*);
virtual void bindFramebufferToOutputSurface(DrawingFrame&) = 0;
virtual bool bindFramebufferToTexture(DrawingFrame&, const ScopedResource*, const gfx::Rect& framebufferRect) = 0;
virtual void setDrawViewportSize(const gfx::Size&) = 0;
virtual void setScissorTestRect(const gfx::Rect& scissorRect) = 0;
virtual void clearFramebuffer(DrawingFrame&) = 0;
virtual void drawQuad(DrawingFrame&, const DrawQuad*) = 0;
virtual void beginDrawingFrame(DrawingFrame&) = 0;
virtual void finishDrawingFrame(DrawingFrame&) = 0;
virtual void finishDrawingQuadList();
virtual bool flippedFramebuffer() const = 0;
virtual void ensureScissorTestEnabled() = 0;
virtual void ensureScissorTestDisabled() = 0;
ScopedPtrHashMap<RenderPass::Id, CachedResource> m_renderPassTextures;
ResourceProvider* m_resourceProvider;
private:
gfx::Vector2d m_enlargePassTextureAmount;
DISALLOW_COPY_AND_ASSIGN(DirectRenderer);
};
} // namespace cc
#endif // CC_DIRECT_RENDERER_H_
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