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      1 /*
      2  * Mesa 3-D graphics library
      3  * Version:  7.11
      4  *
      5  * Copyright (C) 2011 Morgan Armand <morgan.devel (at) 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) &&
    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