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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_OUTPUT_RENDERER_H_
#define CC_OUTPUT_RENDERER_H_
#include "base/basictypes.h"
#include "cc/base/cc_export.h"
#include "cc/quads/render_pass.h"
#include "cc/resources/managed_memory_policy.h"
#include "cc/trees/layer_tree_host.h"
namespace cc {
class CompositorFrameAck;
class CompositorFrameMetadata;
class ScopedResource;
class CC_EXPORT RendererClient {
public:
virtual gfx::Size DeviceViewportSize() const = 0;
virtual const LayerTreeSettings& Settings() const = 0;
virtual void DidLoseOutputSurface() = 0;
virtual void OnSwapBuffersComplete() = 0;
virtual void SetFullRootLayerDamage() = 0;
virtual void SetManagedMemoryPolicy(const ManagedMemoryPolicy& policy) = 0;
virtual void EnforceManagedMemoryPolicy(
const ManagedMemoryPolicy& policy) = 0;
virtual bool HasImplThread() const = 0;
virtual bool ShouldClearRootRenderPass() const = 0;
virtual CompositorFrameMetadata MakeCompositorFrameMetadata() const = 0;
virtual bool AllowPartialSwap() const = 0;
protected:
virtual ~RendererClient() {}
};
class CC_EXPORT Renderer {
public:
virtual ~Renderer() {}
virtual const RendererCapabilities& Capabilities() const = 0;
const LayerTreeSettings& Settings() const { return client_->Settings(); }
gfx::Size ViewportSize() const { return client_->DeviceViewportSize(); }
int ViewportWidth() const { return ViewportSize().width(); }
int ViewportHeight() const { return ViewportSize().height(); }
virtual void ViewportChanged() {}
virtual void ReceiveCompositorFrameAck(const CompositorFrameAck& ack) {}
virtual void DecideRenderPassAllocationsForFrame(
const RenderPassList& render_passes_in_draw_order) {}
virtual bool HaveCachedResourcesForRenderPassId(RenderPass::Id id) const;
// This passes ownership of the render passes to the renderer. It should
// consume them, and empty the list.
virtual void DrawFrame(RenderPassList* render_passes_in_draw_order) = 0;
// Waits for rendering to finish.
virtual void Finish() = 0;
virtual void DoNoOp() {}
// Puts backbuffer onscreen.
virtual bool SwapBuffers() = 0;
virtual void GetFramebufferPixels(void* pixels, gfx::Rect rect) = 0;
virtual bool IsContextLost();
virtual void SetVisible(bool visible) = 0;
virtual void SendManagedMemoryStats(size_t bytes_visible,
size_t bytes_visible_and_nearby,
size_t bytes_allocated) = 0;
protected:
explicit Renderer(RendererClient* client)
: client_(client) {}
RendererClient* client_;
DISALLOW_COPY_AND_ASSIGN(Renderer);
};
} // namespace cc
#endif // CC_OUTPUT_RENDERER_H_
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