ui: Move gl/ directory out of gfx/, up to ui/.

ui/gfx/gl/gl_surface.h

-// Copyright (c) 2012 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_SURFACE_H_
-#define UI_GFX_GL_GL_SURFACE_H_
-#pragma once
-
-#include "base/memory/ref_counted.h"
-#include "build/build_config.h"
-#include "ui/gfx/gl/gl_export.h"
-#include "ui/gfx/native_widget_types.h"
-#include "ui/gfx/size.h"
-
-namespace gfx {
-
-class GLContext;
-
-#if defined(OS_ANDROID)
-class AndroidNativeWindow;
-#endif
-
-// Encapsulates a surface that can be rendered to with GL, hiding platform
-// specific management.
-class GL_EXPORT GLSurface : public base::RefCounted<GLSurface> {
- public:
-  GLSurface();
-
-  // (Re)create the surface. TODO(apatrick): This is an ugly hack to allow the
-  // EGL surface associated to be recreated without destroying the associated
-  // context. The implementation of this function for other GLSurface derived
-  // classes is in a pending changelist.
-  virtual bool Initialize();
-
-  // Destroys the surface.
-  virtual void Destroy() = 0;
-
-  virtual bool Resize(const gfx::Size& size);
-
-  // Returns true if this surface is offscreen.
-  virtual bool IsOffscreen() = 0;
-
-  // Swaps front and back buffers. This has no effect for off-screen
-  // contexts.
-  virtual bool SwapBuffers() = 0;
-
-  // Get the size of the surface.
-  virtual gfx::Size GetSize() = 0;
-
-#if defined(OS_ANDROID)
-  virtual void SetNativeWindow(AndroidNativeWindow* window) { }
-#endif
-
-  // Get the underlying platform specific surface "handle".
-  virtual void* GetHandle() = 0;
-
-  // Returns space separated list of surface specific extensions.
-  // The surface must be current.
-  virtual std::string GetExtensions();
-
-  // Returns the internal frame buffer object name if the surface is backed by
-  // FBO. Otherwise returns 0.
-  virtual unsigned int GetBackingFrameBufferObject();
-
-  // Copy part of the backbuffer to the frontbuffer.
-  virtual bool PostSubBuffer(int x, int y, int width, int height);
-
-  static bool InitializeOneOff();
-
-  // Called after a context is made current with this surface. Returns false
-  // on error.
-  virtual bool OnMakeCurrent(GLContext* context);
-
-  // Used for explicit buffer management.  Expect buffers to be destroyed only
-  // when surface is not visible.
-  enum BufferAllocationState {
-    BUFFER_ALLOCATION_FRONT_AND_BACK,
-    BUFFER_ALLOCATION_FRONT_ONLY,
-    BUFFER_ALLOCATION_NONE
-  };
-  virtual void SetBufferAllocation(BufferAllocationState state);
-
-  // Get a handle used to share the surface with another process. Returns null
-  // if this is not possible.
-  virtual void* GetShareHandle();
-
-  // Get the platform specific display on which this surface resides, if
-  // available.
-  virtual void* GetDisplay();
-
-  // Get the platfrom specific configuration for this surface, if available.
-  virtual void* GetConfig();
-
-  // Get the GL pixel format of the surface, if available.
-  virtual unsigned GetFormat();
-
-  // Create a GL surface that renders directly to a view.
-  static scoped_refptr<GLSurface> CreateViewGLSurface(
-      bool software,
-      gfx::AcceleratedWidget window);
-
-  // Create a GL surface used for offscreen rendering.
-  static scoped_refptr<GLSurface> CreateOffscreenGLSurface(
-      bool software,
-      const gfx::Size& size);
-
-  static GLSurface* GetCurrent();
-
- protected:
-  virtual ~GLSurface();
-  static bool InitializeOneOffInternal();
-  static void SetCurrent(GLSurface* surface);
-
- private:
-  friend class base::RefCounted<GLSurface>;
-  friend class GLContext;
-  DISALLOW_COPY_AND_ASSIGN(GLSurface);
-};
-
-// Implementation of GLSurface that forwards all calls through to another
-// GLSurface.
-class GL_EXPORT GLSurfaceAdapter : public GLSurface {
- public:
-  explicit GLSurfaceAdapter(GLSurface* surface);
-
-  virtual bool Initialize() OVERRIDE;
-  virtual void Destroy() OVERRIDE;
-  virtual bool Resize(const gfx::Size& size) OVERRIDE;
-  virtual bool IsOffscreen() OVERRIDE;
-  virtual bool SwapBuffers() OVERRIDE;
-  virtual bool PostSubBuffer(int x, int y, int width, int height) OVERRIDE;
-  virtual std::string GetExtensions() OVERRIDE;
-  virtual gfx::Size GetSize() OVERRIDE;
-  virtual void* GetHandle() OVERRIDE;
-  virtual unsigned int GetBackingFrameBufferObject() OVERRIDE;
-  virtual bool OnMakeCurrent(GLContext* context) OVERRIDE;
-  virtual void SetBufferAllocation(BufferAllocationState state) OVERRIDE;
-  virtual void* GetShareHandle() OVERRIDE;
-  virtual void* GetDisplay() OVERRIDE;
-  virtual void* GetConfig() OVERRIDE;
-  virtual unsigned GetFormat() OVERRIDE;
-
-  GLSurface* surface() const { return surface_.get(); }
-
- protected:
-  virtual ~GLSurfaceAdapter();
-
- private:
-  scoped_refptr<GLSurface> surface_;
-  DISALLOW_COPY_AND_ASSIGN(GLSurfaceAdapter);
-};
-
-}  // namespace gfx
-
-#endif  // UI_GFX_GL_GL_SURFACE_H_