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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/trees/layer_tree_host.h"
namespace cc {
class CompositorFrameAck;
class CompositorFrameMetadata;
class ScopedResource;
struct RendererCapabilitiesImpl {
RendererCapabilitiesImpl();
~RendererCapabilitiesImpl();
// Capabilities copied to main thread.
ResourceFormat best_texture_format;
bool allow_partial_texture_updates;
bool using_offscreen_context3d;
int max_texture_size;
bool using_shared_memory_resources;
// Capabilities used on compositor thread only.
bool using_partial_swap;
bool using_egl_image;
bool avoid_pow2_textures;
bool using_map_image;
bool using_discard_framebuffer;
RendererCapabilities MainThreadCapabilities() const;
};
class CC_EXPORT RendererClient {
public:
virtual void SetFullRootLayerDamage() = 0;
};
class CC_EXPORT Renderer {
public:
virtual ~Renderer() {}
virtual const RendererCapabilitiesImpl& Capabilities() const = 0;
virtual bool CanReadPixels() const = 0;
virtual void DecideRenderPassAllocationsForFrame(
const RenderPassList& render_passes_in_draw_order) {}
virtual bool HasAllocatedResourcesForTesting(RenderPass::Id id) const;
// This passes ownership of the render passes to the renderer. It should
// consume them, and empty the list. The parameters here may change from frame
// to frame and should not be cached.
// The |device_viewport_rect| and |device_clip_rect| are in non-y-flipped
// window space.
virtual void DrawFrame(RenderPassList* render_passes_in_draw_order,
ContextProvider* offscreen_context_provider,
float device_scale_factor,
const gfx::Rect& device_viewport_rect,
const gfx::Rect& device_clip_rect,
bool allow_partial_swap,
bool disable_picture_quad_image_filtering) = 0;
// Waits for rendering to finish.
virtual void Finish() = 0;
virtual void DoNoOp() {}
// Puts backbuffer onscreen.
virtual void SwapBuffers(const CompositorFrameMetadata& metadata) = 0;
virtual void ReceiveSwapBuffersAck(const CompositorFrameAck& ack) {}
virtual void GetFramebufferPixels(void* pixels, const 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, const LayerTreeSettings* settings)
: client_(client), settings_(settings) {}
RendererClient* client_;
const LayerTreeSettings* settings_;
private:
DISALLOW_COPY_AND_ASSIGN(Renderer);
};
} // namespace cc
#endif // CC_OUTPUT_RENDERER_H_
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