hw/xwin/glx/wgl_ext_api.c

   1 /*
   2  * File: wgl_ext_api.c
   3  * Purpose: Wrapper functions for Win32 OpenGL wgl extension functions
   4  *
   5  * Authors: Jon TURNEY
   6  *
   7  * Copyright (c) Jon TURNEY 2009
   8  *
   9  *
  10  * Permission is hereby granted, free of charge, to any person obtaining a
  11  * copy of this software and associated documentation files (the "Software"),
  12  * to deal in the Software without restriction, including without limitation
  13  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  14  * and/or sell copies of the Software, and to permit persons to whom the
  15  * Software is furnished to do so, subject to the following conditions:
  16  *
  17  * The above copyright notice and this permission notice shall be included in
  18  * all copies or substantial portions of the Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  23  * THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  24  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  25  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  26  * DEALINGS IN THE SOFTWARE.
  27  */
  28
  29 #ifdef HAVE_XWIN_CONFIG_H
  30 #include <xwin-config.h>
  31 #endif
  32
  33 #include <X11/Xwindows.h>
  34 #include <GL/gl.h>
  35 #include <GL/glext.h>
  36 #include <glx/glxserver.h>
  37 #include <glx/glxext.h>
  38 #include <GL/wglext.h>
  39 #include <wgl_ext_api.h>
  40 #include "glwindows.h"
  41
  42 #define RESOLVE_DECL(type) \
  43     static type type##proc = NULL;
  44
  45 #define PRERESOLVE(type, symbol) \
  46     type##proc = (type)wglGetProcAddress(symbol);
  47
  48 #define RESOLVE_RET(type, symbol, retval) \
  49   if (type##proc == NULL) { \
  50     ErrorF("wglwrap: Can't resolve \"%s\"\n", symbol); \
  51     __glXErrorCallBack(0); \
  52     return retval; \
  53   }
  54
  55 #define RESOLVE(procname, symbol) RESOLVE_RET(procname, symbol,)
  56
  57 #define RESOLVED_PROC(type) type##proc
  58
  59 /*
  60  * Include generated cdecl wrappers for stdcall WGL functions
  61  *
  62  * There are extensions to the wgl*() API as well; again we call
  63  * these functions by using wglGetProcAddress() to get a pointer
  64  * to the function, and wrapping it for cdecl/stdcall conversion
  65  *
  66  * We arrange to resolve the functions up front, as they need a
  67  * context to work, as we like to use them to be able to select
  68  * a context.  Again, this assumption fails badly on multimontor
  69  * systems...
  70  */
  71
  72 #include "generated_wgl_wrappers.c"