src/gallium/state_trackers/wgl/stw_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 #define WGL_WGLEXT_PROTOTYPES
  31
  32 #include <GL/gl.h>
  33 #include <GL/wglext.h>
  34
  35 #include "glapi/glapi.h"
  36 #include "stw_ext_gallium.h"
  37
  38 struct stw_extension_entry
  39 {
  40    const char *name;
  41    PROC proc;
  42 };
  43
  44 #define STW_EXTENSION_ENTRY(P) { #P, (PROC) P }
  45
  46 static const struct stw_extension_entry stw_extension_entries[] = {
  47
  48    /* WGL_ARB_extensions_string */
  49    STW_EXTENSION_ENTRY( wglGetExtensionsStringARB ),
  50
  51    /* WGL_ARB_pixel_format */
  52    STW_EXTENSION_ENTRY( wglChoosePixelFormatARB ),
  53    STW_EXTENSION_ENTRY( wglGetPixelFormatAttribfvARB ),
  54    STW_EXTENSION_ENTRY( wglGetPixelFormatAttribivARB ),
  55
  56    /* WGL_EXT_extensions_string */
  57    STW_EXTENSION_ENTRY( wglGetExtensionsStringEXT ),
  58
  59    /* WGL_EXT_swap_interval */
  60    STW_EXTENSION_ENTRY( wglGetSwapIntervalEXT ),
  61    STW_EXTENSION_ENTRY( wglSwapIntervalEXT ),
  62
  63    /* WGL_EXT_gallium ? */
  64    STW_EXTENSION_ENTRY( wglGetGalliumScreenMESA ),
  65    STW_EXTENSION_ENTRY( wglCreateGalliumContextMESA ),
  66
  67    { NULL, NULL }
  68 };
  69
  70 PROC APIENTRY
  71 DrvGetProcAddress(
  72    LPCSTR lpszProc )
  73 {
  74    const struct stw_extension_entry *entry;
  75
  76    if (lpszProc[0] == 'w' && lpszProc[1] == 'g' && lpszProc[2] == 'l')
  77       for (entry = stw_extension_entries; entry->name; entry++)
  78          if (strcmp( lpszProc, entry->name ) == 0)
  79             return entry->proc;
  80
  81    if (lpszProc[0] == 'g' && lpszProc[1] == 'l')
  82       return (PROC) _glapi_get_proc_address( lpszProc );
  83
  84    return NULL;
  85 }