gecko-dev/gfx/gl/SharedSurfaceD3D11Interop.h

/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 4; -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef SHARED_SURFACE_D3D11_INTEROP_H_
#define SHARED_SURFACE_D3D11_INTEROP_H_

#include <windows.h>
#include "SharedSurface.h"

namespace mozilla {
namespace gl {

class DXInterop2Device;
class GLContext;
class WGLLibrary;

class SharedSurface_D3D11Interop : public SharedSurface {
 public:
  const GLuint mProdTex;
  const GLuint mInteropFB;
  const GLuint mInteropRB;
  const RefPtr<DXInterop2Device> mInterop;
  const HANDLE mLockHandle;
  const RefPtr<ID3D11Texture2D> mTexD3D;
  const HANDLE mDXGIHandle;
  const bool mNeedsFinish;

 protected:
  bool mLockedForGL;

 public:
  static UniquePtr<SharedSurface_D3D11Interop> Create(DXInterop2Device* interop,
                                                      GLContext* gl,
                                                      const gfx::IntSize& size,
                                                      bool hasAlpha);

  static SharedSurface_D3D11Interop* Cast(SharedSurface* surf) {
    MOZ_ASSERT(surf->mType == SharedSurfaceType::DXGLInterop2);
    return (SharedSurface_D3D11Interop*)surf;
  }

 protected:
  SharedSurface_D3D11Interop(GLContext* gl, const gfx::IntSize& size,
                             bool hasAlpha, GLuint prodTex, GLuint interopFB,
                             GLuint interopRB, DXInterop2Device* interop,
                             HANDLE lockHandle, ID3D11Texture2D* texD3D,
                             HANDLE dxgiHandle);

 public:
  virtual ~SharedSurface_D3D11Interop();

  void LockProdImpl() override {}
  void UnlockProdImpl() override {}

  void ProducerAcquireImpl() override;
  void ProducerReleaseImpl() override;

  GLuint ProdRenderbuffer() override {
    MOZ_ASSERT(!mProdTex);
    return mInteropRB;
  }

  GLuint ProdTexture() override {
    MOZ_ASSERT(mProdTex);
    return mProdTex;
  }

  bool ToSurfaceDescriptor(
      layers::SurfaceDescriptor* const out_descriptor) override;
};

class SurfaceFactory_D3D11Interop : public SurfaceFactory {
 public:
  const RefPtr<DXInterop2Device> mInterop;

  static UniquePtr<SurfaceFactory_D3D11Interop> Create(
      GLContext* gl, const SurfaceCaps& caps,
      layers::LayersIPCChannel* allocator, const layers::TextureFlags& flags);

 protected:
  SurfaceFactory_D3D11Interop(GLContext* gl, const SurfaceCaps& caps,
                              layers::LayersIPCChannel* allocator,
                              const layers::TextureFlags& flags,
                              DXInterop2Device* interop);

 public:
  virtual ~SurfaceFactory_D3D11Interop();

 protected:
  UniquePtr<SharedSurface> CreateShared(const gfx::IntSize& size) override {
    bool hasAlpha = mReadCaps.alpha;
    return SharedSurface_D3D11Interop::Create(mInterop, mGL, size, hasAlpha);
  }
};

} /* namespace gl */
} /* namespace mozilla */

#endif /* SHARED_SURFACE_D3D11_INTEROP_H_ */