Split EGLContext in GLContextEGL and GLSurfaceEGL.

ui/gfx/gl/gl_surface_egl.h

 // Copyright (c) 2011 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 UI_GFX_GL_GL_CONTEXT_EGL_H_
-#define UI_GFX_GL_GL_CONTEXT_EGL_H_
+#ifndef UI_GFX_GL_GL_SURFACE_EGL_H_
+#define UI_GFX_GL_GL_SURFACE_EGL_H_
 #pragma once
 
-#include "base/memory/ref_counted.h"
-#include "ui/gfx/gl/gl_context.h"
+#include "ui/gfx/gl/gl_surface.h"
 #include "ui/gfx/size.h"
 
+typedef void* EGLConfig;
 typedef void* EGLDisplay;
-typedef void* EGLContext;
 typedef void* EGLSurface;
 
 namespace gfx {
 
-// Takes ownership of an EGL surface and reference counts it so it can be shared
-// by multiple EGL contexts and destroyed with the last.
-class SharedEGLSurface : public base::RefCounted<SharedEGLSurface> {
+// Interface for EGL contexts.
+class GLSurfaceEGL : public GLSurface {
  public:
-  explicit SharedEGLSurface(EGLSurface surface);
-  ~SharedEGLSurface();
+  GLSurfaceEGL();
+  virtual ~GLSurfaceEGL();
 
-  EGLSurface egl_surface() const;
+  static bool InitializeOneOff();
+  static EGLDisplay GetDisplay();
+  static EGLConfig GetConfig();
 
  private:
-  EGLSurface surface_;
-  DISALLOW_COPY_AND_ASSIGN(SharedEGLSurface);
+  DISALLOW_COPY_AND_ASSIGN(GLSurfaceEGL);
 };
 
-// Interface for EGL contexts. Adds an EGL specific accessor for retreiving
-// the surface.
-class BaseEGLContext : public GLContext {
+// Encapsulates an EGL surface bound to a view.
+class NativeViewGLSurfaceEGL : public GLSurfaceEGL {
  public:
-  BaseEGLContext() {}
-  virtual ~BaseEGLContext() {}
-
-  static bool InitializeOneOff();
-
-  static EGLDisplay GetDisplay();
-
-  // Get the associated EGL surface.
-  virtual SharedEGLSurface* GetSurface() = 0;
-
-  // Implement GLContext.
-  virtual std::string GetExtensions();
-
- 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();
+  explicit NativeViewGLSurfaceEGL(void* window);
+  virtual ~NativeViewGLSurfaceEGL();
 
   // Initialize an EGL context.
   bool Initialize();
 
-  // Implement GLContext.
+  // Implement GLSurface.
   virtual void Destroy();
-  virtual bool MakeCurrent();
-  virtual bool IsCurrent();
   virtual bool IsOffscreen();
   virtual bool SwapBuffers();
   virtual gfx::Size GetSize();
-  virtual void* GetHandle();
-  virtual void SetSwapInterval(int interval);
-
-  // Implement BaseEGLContext.
-  virtual SharedEGLSurface* GetSurface();
+  virtual EGLSurface GetHandle();
 
  private:
   void* window_;
-  scoped_refptr<SharedEGLSurface> surface_;
-  EGLContext context_;
+  EGLSurface surface_;
 
-  DISALLOW_COPY_AND_ASSIGN(NativeViewEGLContext);
+  DISALLOW_COPY_AND_ASSIGN(NativeViewGLSurfaceEGL);
 };
 
-// Encapsulates an EGL OpenGL ES context intended for offscreen use. It is
-// actually associated with a native window or a pbuffer on supporting platforms
-// and will render to it. The caller must bind an FBO to prevent this.
-// TODO(apatrick): implement pbuffers in ANGLE and change this to
-// PbufferEGLContext and use it on all EGL platforms.
-class SecondaryEGLContext : public BaseEGLContext {
+// Encapsulates a pbuffer EGL surface.
+class PbufferGLSurfaceEGL : public GLSurfaceEGL {
  public:
-  SecondaryEGLContext();
-  virtual ~SecondaryEGLContext();
+  explicit PbufferGLSurfaceEGL(const gfx::Size& size);
+  virtual ~PbufferGLSurfaceEGL();
 
   // Initialize an EGL context that shares a namespace with another.
-  bool Initialize(GLContext* shared_context);
+  bool Initialize();
 
-  // Implement GLContext.
+  // Implement GLSurface.
   virtual void Destroy();
-  virtual bool MakeCurrent();
-  virtual bool IsCurrent();
   virtual bool IsOffscreen();
   virtual bool SwapBuffers();
   virtual gfx::Size GetSize();
-  virtual void* GetHandle();
-  virtual void SetSwapInterval(int interval);
-
-  // Implement BaseEGLContext.
-  virtual SharedEGLSurface* GetSurface();
+  virtual EGLSurface GetHandle();
 
  private:
-  scoped_refptr<SharedEGLSurface> surface_;
-  EGLContext context_;
+  gfx::Size size_;
+  EGLSurface surface_;
 
-  DISALLOW_COPY_AND_ASSIGN(SecondaryEGLContext);
+  DISALLOW_COPY_AND_ASSIGN(PbufferGLSurfaceEGL);
 };
 
 }  // namespace gfx
 
-#endif  // UI_GFX_GL_GL_CONTEXT_EGL_H_
+#endif  // UI_GFX_GL_GL_SURFACE_EGL_H_