Line data    Source code

       1           0 : /*
       2             : 
       3             : OOMacroOpenGL.h
       4             : 
       5             : Under Mac OS X, OpenGL performance can be improved somewhat by using macros
       6             : that call through to a function table directly, avoiding calls to functions
       7             : that just look up the current context and pass their parameters through to
       8             : a context-specific implementation function.
       9             : 
      10             : This header abstracts that behaviour for cross-platformity.
      11             : 
      12             : Oolite
      13             : Copyright (C) 2004-2013 Giles C Williams and contributors
      14             : 
      15             : This program is free software; you can redistribute it and/or
      16             : modify it under the terms of the GNU General Public License
      17             : as published by the Free Software Foundation; either version 2
      18             : of the License, or (at your option) any later version.
      19             : 
      20             : This program is distributed in the hope that it will be useful,
      21             : but WITHOUT ANY WARRANTY; without even the implied warranty of
      22             : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      23             : GNU General Public License for more details.
      24             : 
      25             : You should have received a copy of the GNU General Public License
      26             : along with this program; if not, write to the Free Software
      27             : Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
      28             : MA 02110-1301, USA.
      29             : 
      30             : */
      31             : 
      32             : #if OOLITE_MAC_OS_X && !defined(OOLITE_NO_CGL_MACRO)
      33             : 
      34             : #if MAC_OS_X_VERSION_10_4 <= MAC_OS_X_VERSION_MAX_ALLOWED
      35             : 
      36             : #define CGL_MACRO_CACHE_RENDERER
      37             : #import <OpenGL/CGLMacro.h>
      38             : 
      39             : #define OO_ENTER_OPENGL CGL_MACRO_DECLARE_VARIABLES
      40             : 
      41             : #else
      42             : 
      43             : #import <OpenGL/CGLMacro.h>
      44             : 
      45             : #define OO_ENTER_OPENGL()       CGLContextObj CGL_MACRO_CONTEXT = CGLGetCurrentContext();       \
      46             : 
      47             : #endif
      48             : #else
      49             : // Not OS X
      50           0 : #define OO_ENTER_OPENGL()       do {} while (0)
      51             : #endif