reactos/dll/opengl/mesa/src/gallium/state_trackers/wgl/stw_ext_context.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.11
   4  *
   5  * Copyright (C) 2011 Morgan Armand <morgan.devel@gmail.com>
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 //#include <windows.h>
  26
  27 #define WGL_WGLEXT_PROTOTYPES
  28
  29 #include <GL/gl.h>
  30 #include <GL/wglext.h>
  31
  32 #include "stw_icd.h"
  33 #include "stw_context.h"
  34
  35 HGLRC WINAPI
  36 wglCreateContextAttribsARB(HDC hDC, HGLRC hShareContext, const int *attribList)
  37 {
  38    int majorVersion = 1, minorVersion = 0, layerPlane = 0;
  39    int contextFlags = 0x0;
  40    int profileMask = WGL_CONTEXT_CORE_PROFILE_BIT_ARB;
  41    int i;
  42    BOOL done = FALSE;
  43
  44    /* parse attrib_list */
  45    if (attribList) {
  46       for (i = 0; !done && attribList[i]; i++) {
  47          switch (attribList[i]) {
  48          case WGL_CONTEXT_MAJOR_VERSION_ARB:
  49             majorVersion = attribList[++i];
  50             break;
  51          case WGL_CONTEXT_MINOR_VERSION_ARB:
  52             minorVersion = attribList[++i];
  53             break;
  54          case WGL_CONTEXT_LAYER_PLANE_ARB:
  55             layerPlane = attribList[++i];
  56             break;
  57          case WGL_CONTEXT_FLAGS_ARB:
  58             contextFlags = attribList[++i];
  59             break;
  60          case WGL_CONTEXT_PROFILE_MASK_ARB:
  61             profileMask = attribList[++i];
  62             break;
  63          case 0:
  64             /* end of list */
  65             done = TRUE;
  66             break;
  67          default:
  68             /* bad attribute */
  69             SetLastError(ERROR_INVALID_PARAMETER);
  70             return NULL;
  71          }
  72       }
  73    }
  74
  75    /* check version (generate ERROR_INVALID_VERSION_ARB if bad) */
  76    switch (majorVersion) {
  77    case 1:
  78       if (minorVersion < 0 || minorVersion > 5) {
  79          SetLastError(ERROR_INVALID_VERSION_ARB);
  80          return NULL;
  81       }
  82       break;
  83    case 2:
  84       if (minorVersion < 0 || minorVersion > 1) {
  85          SetLastError(ERROR_INVALID_VERSION_ARB);
  86          return NULL;
  87       }
  88       break;
  89    case 3:
  90       if (minorVersion < 0 || minorVersion > 3) {
  91          SetLastError(ERROR_INVALID_VERSION_ARB);
  92          return NULL;
  93       }
  94       break;
  95    case 4:
  96       if (minorVersion < 0 || minorVersion > 2) {
  97          SetLastError(ERROR_INVALID_VERSION_ARB);
  98          return NULL;
  99       }
 100       break;
 101    default:
 102       return NULL;
 103    }
 104
 105    if ((contextFlags & WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB) && majorVersion < 3) {
 106       SetLastError(ERROR_INVALID_VERSION_ARB);
 107       return NULL;
 108    }
 109
 110    /* check profileMask */
 111    if (profileMask != WGL_CONTEXT_CORE_PROFILE_BIT_ARB &&
 112        profileMask != WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB) {
 113       SetLastError(ERROR_INVALID_PROFILE_ARB);
 114       return NULL;
 115    }
 116
 117    return (HGLRC) stw_create_context_attribs( hDC, layerPlane, (DHGLRC)(UINT_PTR)hShareContext,
 118                                               majorVersion, minorVersion, contextFlags, profileMask );
 119 }