src/gallium/state_trackers/wgl/stw_wgl_getprocaddress.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include <windows.h>
  29
  30 #include "glapi/glapi.h"
  31 #include "stw_wgl_arbextensionsstring.h"
  32 #include "stw_wgl_arbpixelformat.h"
  33
  34 struct extension_entry
  35 {
  36    const char *name;
  37    PROC proc;
  38 };
  39
  40 #define EXTENTRY(P) { #P, (PROC) P }
  41
  42 static struct extension_entry extension_entries[] = {
  43
  44    /* WGL_ARB_extensions_string */
  45    EXTENTRY( wglGetExtensionsStringARB ),
  46
  47    /* WGL_ARB_pixel_format */
  48    EXTENTRY( wglChoosePixelFormatARB ),
  49    EXTENTRY( wglGetPixelFormatAttribfvARB ),
  50    EXTENTRY( wglGetPixelFormatAttribivARB ),
  51
  52    { NULL, NULL }
  53 };
  54
  55 WINGDIAPI PROC APIENTRY
  56 wglGetProcAddress(
  57    LPCSTR lpszProc )
  58 {
  59    struct extension_entry *entry;
  60
  61    PROC p = (PROC) _glapi_get_proc_address( (const char *) lpszProc );
  62    if (p)
  63       return p;
  64
  65    for (entry = extension_entries; entry->name; entry++)
  66       if (strcmp( lpszProc, entry->name ) == 0)
  67          return entry->proc;
  68
  69    return NULL;
  70 }