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// Copyright (c) 2013 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 CONTENT_COMMON_GPU_CLIENT_CONTEXT_PROVIDER_COMMAND_BUFFER
#define CONTENT_COMMON_GPU_CLIENT_CONTEXT_PROVIDER_COMMAND_BUFFER
#include "base/memory/scoped_ptr.h"
#include "base/synchronization/lock.h"
#include "cc/output/context_provider.h"
#include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
namespace webkit {
namespace gpu {
class GrContextForWebGraphicsContext3D;
}
}
namespace content {
// Implementation of cc::ContextProvider that provides a
// WebGraphicsContext3DCommandBufferImpl context and a GrContext.
class ContextProviderCommandBuffer : public cc::ContextProvider {
public:
virtual bool BindToCurrentThread() OVERRIDE;
virtual WebGraphicsContext3DCommandBufferImpl* Context3d() OVERRIDE;
virtual class GrContext* GrContext() OVERRIDE;
virtual void VerifyContexts() OVERRIDE;
virtual bool DestroyedOnMainThread() OVERRIDE;
void set_leak_on_destroy() {
base::AutoLock lock(main_thread_lock_);
leak_on_destroy_ = true;
}
protected:
ContextProviderCommandBuffer();
virtual ~ContextProviderCommandBuffer();
// This must be called immedately after creating this object, and it should
// be thrown away if this returns false.
bool InitializeOnMainThread();
// Subclass must provide an implementation to create an offscreen context.
virtual scoped_ptr<WebGraphicsContext3DCommandBufferImpl>
CreateOffscreenContext3d() = 0;
void OnLostContextInternal();
virtual void OnLostContext() {}
virtual void OnMemoryAllocationChanged(bool nonzero_allocation);
private:
scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context3d_;
scoped_ptr<webkit::gpu::GrContextForWebGraphicsContext3D> gr_context_;
base::Lock main_thread_lock_;
bool leak_on_destroy_;
bool destroyed_;
class LostContextCallbackProxy;
scoped_ptr<LostContextCallbackProxy> lost_context_callback_proxy_;
class MemoryAllocationCallbackProxy;
scoped_ptr<MemoryAllocationCallbackProxy> memory_allocation_callback_proxy_;
};
} // namespace content
#endif // CONTENT_COMMON_GPU_CLIENT_CONTEXT_PROVIDER_COMMAND_BUFFER
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