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// Copyright (c) 2010 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 APP_GFX_GL_GL_CONTEXT_EGL_H_
#define APP_GFX_GL_GL_CONTEXT_EGL_H_
#pragma once
#include "gfx/size.h"
#include "app/gfx/gl/gl_context.h"
typedef void* EGLDisplay;
typedef void* EGLContext;
typedef void* EGLSurface;
namespace gfx {
// Interface for EGL contexts. Adds an EGL specific accessor for retreiving
// the surface.
class BaseEGLContext : public GLContext {
public:
BaseEGLContext() {}
virtual ~BaseEGLContext() {}
// Implement GLContext.
virtual EGLSurface GetSurface() = 0;
static bool InitializeOneOff();
static EGLDisplay GetDisplay();
private:
DISALLOW_COPY_AND_ASSIGN(BaseEGLContext);
};
// Encapsulates an EGL OpenGL ES context that renders to a view.
class NativeViewEGLContext : public BaseEGLContext {
public:
explicit NativeViewEGLContext(void* window);
virtual ~NativeViewEGLContext();
// Initialize an EGL context.
bool Initialize();
// Implement GLContext.
virtual void Destroy();
virtual bool MakeCurrent();
virtual bool IsCurrent();
virtual bool IsOffscreen();
virtual void SwapBuffers();
virtual gfx::Size GetSize();
virtual void* GetHandle();
// Implement BaseEGLContext.
virtual EGLSurface GetSurface();
private:
void* window_;
EGLSurface surface_;
EGLContext context_;
DISALLOW_COPY_AND_ASSIGN(NativeViewEGLContext);
};
// Encapsulates an EGL OpenGL ES context intended for offscreen use. It is
// actually associated with a native window and will render to it. The caller
// must bind an FBO to prevent this. Not using pbuffers because ANGLE does not
// support them.
class SecondaryEGLContext : public BaseEGLContext {
public:
SecondaryEGLContext();
virtual ~SecondaryEGLContext();
// Initialize an EGL context that shares a namespace with another.
bool Initialize(GLContext* shared_context);
// Implement GLContext.
virtual void Destroy();
virtual bool MakeCurrent();
virtual bool IsCurrent();
virtual bool IsOffscreen();
virtual void SwapBuffers();
virtual gfx::Size GetSize();
virtual void* GetHandle();
// Implement BaseEGLContext.
virtual EGLSurface GetSurface();
private:
// All offscreen
EGLSurface surface_;
bool own_surface_;
EGLContext context_;
DISALLOW_COPY_AND_ASSIGN(SecondaryEGLContext);
};
} // namespace gfx
#endif // APP_GFX_GL_GL_CONTEXT_EGL_H_
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