ui/gl/scoped_binders.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_SCOPED_BINDERS_H_
   6 #define UI_GL_SCOPED_BINDERS_H_
   7
   8 #include "base/basictypes.h"
   9 #include "ui/gl/gl_export.h"
  10
  11 namespace gfx {
  12 class GLStateRestorer;
  13
  14 class GL_EXPORT ScopedFrameBufferBinder {
  15  public:
  16   explicit ScopedFrameBufferBinder(unsigned int fbo);
  17   ~ScopedFrameBufferBinder();
  18
  19  private:
  20   // Whenever possible we prefer to use the current GLContext's
  21   // GLStateRestorer to maximize driver compabitility.
  22   GLStateRestorer* state_restorer_;
  23
  24   // Failing that we use GL calls to save and restore state.
  25   int old_fbo_;
  26
  27   DISALLOW_COPY_AND_ASSIGN(ScopedFrameBufferBinder);
  28 };
  29
  30
  31 class GL_EXPORT ScopedTextureBinder {
  32  public:
  33   ScopedTextureBinder(unsigned int target, unsigned int id);
  34   ~ScopedTextureBinder();
  35
  36  private:
  37   // Whenever possible we prefer to use the current GLContext's
  38   // GLStateRestorer to maximize driver compabitility.
  39   GLStateRestorer* state_restorer_;
  40
  41   // Failing that we use GL calls to save and restore state.
  42   int target_;
  43   int old_id_;
  44
  45   DISALLOW_COPY_AND_ASSIGN(ScopedTextureBinder);
  46 };
  47
  48 }  // namespace gfx
  49
  50 #endif  // UI_GL_SCOPED_BINDERS_H_