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  1. /*
  2.  * Mesa 3-D graphics library
  3.  *
  4.  * Copyright (C) 2011 Morgan Armand <morgan.devel@gmail.com>
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the "Software"),
  8.  * to deal in the Software without restriction, including without limitation
  9.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10.  * and/or sell copies of the Software, and to permit persons to whom the
  11.  * Software is furnished to do so, subject to the following conditions:
  12.  *
  13.  * The above copyright notice and this permission notice shall be included
  14.  * in all copies or substantial portions of the Software.
  15.  *
  16.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  17.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20.  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21.  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22.  * 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) &&
  106.        majorVersion < 3) {
  107.       SetLastError(ERROR_INVALID_VERSION_ARB);
  108.       return NULL;
  109.    }
  110.  
  111.    /* check profileMask */
  112.    if (profileMask != WGL_CONTEXT_CORE_PROFILE_BIT_ARB &&
  113.        profileMask != WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB) {
  114.       SetLastError(ERROR_INVALID_PROFILE_ARB);
  115.       return NULL;
  116.    }
  117.  
  118.    return (HGLRC) stw_create_context_attribs(hDC, layerPlane,
  119.                                              (DHGLRC) (UINT_PTR) hShareContext,
  120.                                              majorVersion, minorVersion,
  121.                                              contextFlags, profileMask);
  122. }
  123.