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      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 #include "stw_device.h"
     38 #include "stw_icd.h"
     39 
     40 struct stw_extension_entry
     41 {
     42    const char *name;
     43    PROC proc;
     44 };
     45 
     46 #define STW_EXTENSION_ENTRY(P) { #P, (PROC) P }
     47 
     48 static const struct stw_extension_entry stw_extension_entries[] = {
     49 
     50    /* WGL_ARB_extensions_string */
     51    STW_EXTENSION_ENTRY( wglGetExtensionsStringARB ),
     52 
     53    /* WGL_ARB_pbuffer */
     54    STW_EXTENSION_ENTRY( wglCreatePbufferARB ),
     55    STW_EXTENSION_ENTRY( wglGetPbufferDCARB ),
     56    STW_EXTENSION_ENTRY( wglReleasePbufferDCARB ),
     57    STW_EXTENSION_ENTRY( wglDestroyPbufferARB ),
     58    STW_EXTENSION_ENTRY( wglQueryPbufferARB ),
     59 
     60    /* WGL_ARB_pixel_format */
     61    STW_EXTENSION_ENTRY( wglChoosePixelFormatARB ),
     62    STW_EXTENSION_ENTRY( wglGetPixelFormatAttribfvARB ),
     63    STW_EXTENSION_ENTRY( wglGetPixelFormatAttribivARB ),
     64 
     65    /* WGL_EXT_extensions_string */
     66    STW_EXTENSION_ENTRY( wglGetExtensionsStringEXT ),
     67 
     68    /* WGL_EXT_swap_interval */
     69    STW_EXTENSION_ENTRY( wglGetSwapIntervalEXT ),
     70    STW_EXTENSION_ENTRY( wglSwapIntervalEXT ),
     71 
     72    /* WGL_EXT_gallium ? */
     73    STW_EXTENSION_ENTRY( wglGetGalliumScreenMESA ),
     74    STW_EXTENSION_ENTRY( wglCreateGalliumContextMESA ),
     75 
     76    /* WGL_ARB_create_context */
     77    STW_EXTENSION_ENTRY( wglCreateContextAttribsARB ),
     78 
     79    { NULL, NULL }
     80 };
     81 
     82 PROC APIENTRY
     83 DrvGetProcAddress(
     84    LPCSTR lpszProc )
     85 {
     86    const struct stw_extension_entry *entry;
     87 
     88    if (!stw_dev)
     89       return NULL;
     90 
     91    if (lpszProc[0] == 'w' && lpszProc[1] == 'g' && lpszProc[2] == 'l')
     92       for (entry = stw_extension_entries; entry->name; entry++)
     93          if (strcmp( lpszProc, entry->name ) == 0)
     94             return entry->proc;
     95 
     96    if (lpszProc[0] == 'g' && lpszProc[1] == 'l')
     97       return (PROC) _glapi_get_proc_address( lpszProc );
     98 
     99    return NULL;
    100 }
    101