gecko-dev/gfx/gl/SharedSurfaceGL.h

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2.8 KiB
C++

/* -*- Mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40; -*- */
/* 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_GL_H_
#define SHARED_SURFACE_GL_H_
#include "ScopedGLHelpers.h"
#include "SharedSurface.h"
#include "SurfaceTypes.h"
#include "GLContextTypes.h"
#include "nsAutoPtr.h"
#include "gfxTypes.h"
#include "mozilla/Mutex.h"
#include <queue>
namespace mozilla {
namespace gl {
class GLContext;
} // namespace gl
namespace gfx {
class DataSourceSurface;
} // namespace gfx
} // namespace mozilla
namespace mozilla {
namespace gl {
// For readback and bootstrapping:
class SharedSurface_Basic
: public SharedSurface
{
public:
static UniquePtr<SharedSurface_Basic> Create(GLContext* gl,
const GLFormats& formats,
const gfx::IntSize& size,
bool hasAlpha);
static UniquePtr<SharedSurface_Basic> Wrap(GLContext* gl,
const gfx::IntSize& size,
bool hasAlpha,
GLuint tex);
static SharedSurface_Basic* Cast(SharedSurface* surf) {
MOZ_ASSERT(surf->mType == SharedSurfaceType::Basic);
return (SharedSurface_Basic*)surf;
}
protected:
const GLuint mTex;
const bool mOwnsTex;
GLuint mFB;
SharedSurface_Basic(GLContext* gl,
const gfx::IntSize& size,
bool hasAlpha,
GLuint tex,
bool ownsTex);
public:
virtual ~SharedSurface_Basic();
virtual void LockProdImpl() override {}
virtual void UnlockProdImpl() override {}
virtual void Fence() override {}
virtual bool WaitSync() override { return true; }
virtual bool PollSync() override { return true; }
virtual GLuint ProdTexture() override {
return mTex;
}
virtual bool ToSurfaceDescriptor(layers::SurfaceDescriptor* const out_descriptor) override {
MOZ_CRASH("don't do this");
return false;
}
};
class SurfaceFactory_Basic
: public SurfaceFactory
{
public:
SurfaceFactory_Basic(GLContext* gl, const SurfaceCaps& caps,
const layers::TextureFlags& flags);
virtual UniquePtr<SharedSurface> CreateShared(const gfx::IntSize& size) override {
bool hasAlpha = mReadCaps.alpha;
return SharedSurface_Basic::Create(mGL, mFormats, size, hasAlpha);
}
};
} // namespace gl
} /* namespace mozilla */
#endif /* SHARED_SURFACE_GL_H_ */