ui/gl/gl_state_restorer.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_GL_GL_STATE_RESTORER_H_
   6 #define UI_GL_GL_STATE_RESTORER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "ui/gl/gl_export.h"
  10
  11 namespace gfx {
  12
  13 // An interface for Restoring GL State.
  14 // This will expand over time to provide an more optimizable implementation.
  15 class GL_EXPORT GLStateRestorer {
  16  public:
  17   GLStateRestorer();
  18   virtual ~GLStateRestorer();
  19
  20   virtual bool IsInitialized() = 0;
  21   virtual void RestoreState(const GLStateRestorer* prev_state) = 0;
  22   virtual void RestoreAllTextureUnitBindings() = 0;
  23   virtual void RestoreActiveTextureUnitBinding(unsigned int target) = 0;
  24   virtual void RestoreFramebufferBindings() = 0;
  25
  26   DISALLOW_COPY_AND_ASSIGN(GLStateRestorer);
  27 };
  28
  29 }  // namespace gfx
  30
  31 #endif  // UI_GL_GL_STATE_RESTORER_H_