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// Copyright (c) 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 PPAPI_SHARED_IMPL_GRAPHICS_3D_IMPL_H_
#define PPAPI_SHARED_IMPL_GRAPHICS_3D_IMPL_H_
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "ppapi/c/pp_completion_callback.h"
#include "ppapi/shared_impl/ppapi_shared_export.h"
#include "ppapi/shared_impl/resource.h"
#include "ppapi/shared_impl/tracked_callback.h"
#include "ppapi/thunk/ppb_graphics_3d_api.h"
namespace gpu {
class CommandBuffer;
class TransferBuffer;
namespace gles2 {
class GLES2CmdHelper;
class GLES2Implementation;
} // namespace gles2
} // namespace gpu.
namespace ppapi {
class PPAPI_SHARED_EXPORT PPB_Graphics3D_Shared
: public Resource,
public thunk::PPB_Graphics3D_API {
public:
// Resource overrides.
virtual thunk::PPB_Graphics3D_API* AsPPB_Graphics3D_API() OVERRIDE;
// PPB_Graphics3D_API implementation.
virtual int32_t GetAttribs(int32_t attrib_list[]) OVERRIDE;
virtual int32_t SetAttribs(const int32_t attrib_list[]) OVERRIDE;
virtual int32_t GetError() OVERRIDE;
virtual int32_t ResizeBuffers(int32_t width, int32_t height) OVERRIDE;
virtual int32_t SwapBuffers(scoped_refptr<TrackedCallback> callback) OVERRIDE;
virtual int32_t GetAttribMaxValue(int32_t attribute, int32_t* value) OVERRIDE;
virtual void* MapTexSubImage2DCHROMIUM(GLenum target,
GLint level,
GLint xoffset,
GLint yoffset,
GLsizei width,
GLsizei height,
GLenum format,
GLenum type,
GLenum access) OVERRIDE;
virtual void UnmapTexSubImage2DCHROMIUM(const void* mem) OVERRIDE;
gpu::gles2::GLES2Implementation* gles2_impl() {
return gles2_impl_.get();
}
// Sends swap-buffers notification to the plugin.
void SwapBuffersACK(int32_t pp_error);
protected:
// ScopedNoLocking makes sure we don't try to lock again when we already have
// the proxy lock. This is used when we need to use the CommandBuffer
// (possibly via gles2_impl) but we already have the proxy lock. The
// CommandBuffer in the plugin side of the proxy will otherwise try to acquire
// the ProxyLock, causing a crash because we already own the lock. (Locks in
// Chromium are never recursive).
class ScopedNoLocking {
public:
explicit ScopedNoLocking(PPB_Graphics3D_Shared* graphics3d_shared)
: graphics3d_shared_(graphics3d_shared) {
graphics3d_shared_->PushAlreadyLocked();
}
~ScopedNoLocking() {
graphics3d_shared_->PopAlreadyLocked();
}
private:
PPB_Graphics3D_Shared* graphics3d_shared_; // Weak
DISALLOW_COPY_AND_ASSIGN(ScopedNoLocking);
};
PPB_Graphics3D_Shared(PP_Instance instance);
PPB_Graphics3D_Shared(const HostResource& host_resource);
virtual ~PPB_Graphics3D_Shared();
virtual gpu::CommandBuffer* GetCommandBuffer() = 0;
virtual int32 DoSwapBuffers() = 0;
bool HasPendingSwap() const;
bool CreateGLES2Impl(int32 command_buffer_size,
int32 transfer_buffer_size,
gpu::gles2::GLES2Implementation* share_gles2);
void DestroyGLES2Impl();
private:
// On the plugin side, we need to know that we already have the lock, so that
// we don't try to acquire it again. The default implementation does nothing;
// the Plugin side of the proxy must implement these.
friend class ScopedNoLocking;
virtual void PushAlreadyLocked();
virtual void PopAlreadyLocked();
// The VideoDecoder needs to be able to call Graphics3D Flush() after taking
// the proxy lock. Hence it needs access to ScopedNoLocking.
friend class PPB_VideoDecoder_Shared;
scoped_ptr<gpu::gles2::GLES2CmdHelper> gles2_helper_;
scoped_ptr<gpu::TransferBuffer> transfer_buffer_;
scoped_ptr<gpu::gles2::GLES2Implementation> gles2_impl_;
// Callback that needs to be executed when swap-buffers is completed.
scoped_refptr<TrackedCallback> swap_callback_;
DISALLOW_COPY_AND_ASSIGN(PPB_Graphics3D_Shared);
};
} // namespace ppapi
#endif // PPAPI_SHARED_IMPL_GRAPHICS_3D_IMPL_H_
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