gecko-dev/gfx/gl/SharedSurfaceGL.h

196 lines
5.1 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>
// Forwards:
namespace mozilla {
namespace gl {
class GLContext;
}
namespace gfx {
class DataSourceSurface;
}
}
namespace mozilla {
namespace gl {
// For readback and bootstrapping:
class SharedSurface_Basic
: public SharedSurface
{
public:
static SharedSurface_Basic* Create(GLContext* gl,
const GLFormats& formats,
const gfx::IntSize& size,
bool hasAlpha);
static SharedSurface_Basic* Cast(SharedSurface* surf) {
MOZ_ASSERT(surf->mType == SharedSurfaceType::Basic);
return (SharedSurface_Basic*)surf;
}
protected:
const GLuint mTex;
GLuint mFB;
RefPtr<gfx::DataSourceSurface> mData;
SharedSurface_Basic(GLContext* gl,
const gfx::IntSize& size,
bool hasAlpha,
gfx::SurfaceFormat format,
GLuint tex);
public:
virtual ~SharedSurface_Basic();
virtual void LockProdImpl() MOZ_OVERRIDE {}
virtual void UnlockProdImpl() MOZ_OVERRIDE {}
virtual void Fence() MOZ_OVERRIDE;
virtual bool WaitSync() MOZ_OVERRIDE {
// Since we already store the data in Fence, we're always done already.
return true;
}
virtual GLuint ProdTexture() MOZ_OVERRIDE {
return mTex;
}
// Implementation-specific functions below:
gfx::DataSourceSurface* GetData() {
return mData;
}
};
class SurfaceFactory_Basic
: public SurfaceFactory
{
public:
SurfaceFactory_Basic(GLContext* gl, const SurfaceCaps& caps)
: SurfaceFactory(gl, SharedSurfaceType::Basic, caps)
{}
virtual SharedSurface* CreateShared(const gfx::IntSize& size) MOZ_OVERRIDE {
bool hasAlpha = mReadCaps.alpha;
return SharedSurface_Basic::Create(mGL, mFormats, size, hasAlpha);
}
};
// Using shared GL textures:
class SharedSurface_GLTexture
: public SharedSurface
{
public:
static SharedSurface_GLTexture* Create(GLContext* prodGL,
GLContext* consGL,
const GLFormats& formats,
const gfx::IntSize& size,
bool hasAlpha,
GLuint texture = 0);
static SharedSurface_GLTexture* Cast(SharedSurface* surf) {
MOZ_ASSERT(surf->mType == SharedSurfaceType::GLTextureShare);
return (SharedSurface_GLTexture*)surf;
}
protected:
GLContext* mConsGL;
const GLuint mTex;
const bool mOwnsTex;
GLsync mSync;
mutable Mutex mMutex;
SharedSurface_GLTexture(GLContext* prodGL,
GLContext* consGL,
const gfx::IntSize& size,
bool hasAlpha,
GLuint tex,
bool ownsTex)
: SharedSurface(SharedSurfaceType::GLTextureShare,
AttachmentType::GLTexture,
prodGL,
size,
hasAlpha)
, mConsGL(consGL)
, mTex(tex)
, mOwnsTex(ownsTex)
, mSync(0)
, mMutex("SharedSurface_GLTexture mutex")
{
}
public:
virtual ~SharedSurface_GLTexture();
virtual void LockProdImpl() MOZ_OVERRIDE {}
virtual void UnlockProdImpl() MOZ_OVERRIDE {}
virtual void Fence() MOZ_OVERRIDE;
virtual bool WaitSync() MOZ_OVERRIDE;
virtual GLuint ProdTexture() MOZ_OVERRIDE {
return mTex;
}
// Custom:
GLuint ConsTexture(GLContext* consGL);
GLenum ConsTextureTarget() const {
return ProdTextureTarget();
}
};
class SurfaceFactory_GLTexture
: public SurfaceFactory
{
protected:
GLContext* const mConsGL;
public:
// If we don't know `consGL` at construction time, use `nullptr`, and call
// `SetConsumerGL()` on each `SharedSurface_GLTexture` before calling its
// `WaitSync()`.
SurfaceFactory_GLTexture(GLContext* prodGL,
GLContext* consGL,
const SurfaceCaps& caps)
: SurfaceFactory(prodGL, SharedSurfaceType::GLTextureShare, caps)
, mConsGL(consGL)
{
MOZ_ASSERT(consGL != prodGL);
}
virtual SharedSurface* CreateShared(const gfx::IntSize& size) MOZ_OVERRIDE {
bool hasAlpha = mReadCaps.alpha;
return SharedSurface_GLTexture::Create(mGL, mConsGL, mFormats, size, hasAlpha);
}
};
} /* namespace gfx */
} /* namespace mozilla */
#endif /* SHARED_SURFACE_GL_H_ */