src/glut/os2/glut_ext.cpp

   1
   2 /* Copyright (c) Mark J. Kilgard, 1994, 1997. */
   3
   4 /* This program is freely distributable without licensing fees
   5    and is provided without guarantee or warrantee expressed or
   6    implied. This program is -not- in the public domain. */
   7
   8 #include <stdlib.h>
   9 #include <string.h>
  10
  11 #include "glutint.h"
  12
  13 /* CENTRY */
  14 int GLUTAPIENTRY
  15 glutExtensionSupported(const char *extension)
  16 {
  17   static const GLubyte *extensions = NULL;
  18   const GLubyte *start;
  19   GLubyte *where, *terminator;
  20
  21   /* Extension names should not have spaces. */
  22   where = (GLubyte *) strchr(extension, ' ');
  23   if (where || *extension == '\0')
  24     return 0;
  25
  26   if (!extensions) {
  27     extensions = glGetString(GL_EXTENSIONS);
  28   }
  29   /* It takes a bit of care to be fool-proof about parsing the
  30      OpenGL extensions string.  Don't be fooled by sub-strings,
  31      etc. */
  32   start = extensions;
  33   for (;;) {
  34     /* If your application crashes in the strstr routine below,
  35        you are probably calling glutExtensionSupported without
  36        having a current window.  Calling glGetString without
  37        a current OpenGL context has unpredictable results.
  38        Please fix your program. */
  39     where = (GLubyte *) strstr((const char *) start, extension);
  40     if (!where)
  41       break;
  42     terminator = where + strlen(extension);
  43     if (where == start || *(where - 1) == ' ') {
  44       if (*terminator == ' ' || *terminator == '\0') {
  45         return 1;
  46       }
  47     }
  48     start = terminator;
  49   }
  50   return 0;
  51 }
  52
  53
  54 struct name_address_pair {
  55    const char *name;
  56    const void *address;
  57 };
  58
  59 static struct name_address_pair glut_functions[] = {
  60    { "glutInit", (const void *) glutInit },
  61    { "glutInitDisplayMode", (const void *) glutInitDisplayMode },
  62    { "glutInitDisplayString", (const void *) glutInitDisplayString },
  63    { "glutInitWindowPosition", (const void *) glutInitWindowPosition },
  64    { "glutInitWindowSize", (const void *) glutInitWindowSize },
  65    { "glutMainLoop", (const void *) glutMainLoop },
  66    { "glutCreateWindow", (const void *) glutCreateWindow },
  67    { "glutCreateSubWindow", (const void *) glutCreateSubWindow },
  68    { "glutDestroyWindow", (const void *) glutDestroyWindow },
  69    { "glutPostRedisplay", (const void *) glutPostRedisplay },
  70    { "glutPostWindowRedisplay", (const void *) glutPostWindowRedisplay },
  71    { "glutSwapBuffers", (const void *) glutSwapBuffers },
  72    { "glutGetWindow", (const void *) glutGetWindow },
  73    { "glutSetWindow", (const void *) glutSetWindow },
  74    { "glutSetWindowTitle", (const void *) glutSetWindowTitle },
  75    { "glutSetIconTitle", (const void *) glutSetIconTitle },
  76    { "glutPositionWindow", (const void *) glutPositionWindow },
  77    { "glutReshapeWindow", (const void *) glutReshapeWindow },
  78    { "glutPopWindow", (const void *) glutPopWindow },
  79    { "glutPushWindow", (const void *) glutPushWindow },
  80    { "glutIconifyWindow", (const void *) glutIconifyWindow },
  81    { "glutShowWindow", (const void *) glutShowWindow },
  82    { "glutHideWindow", (const void *) glutHideWindow },
  83    { "glutFullScreen", (const void *) glutFullScreen },
  84    { "glutSetCursor", (const void *) glutSetCursor },
  85    { "glutWarpPointer", (const void *) glutWarpPointer },
  86    { "glutEstablishOverlay", (const void *) glutEstablishOverlay },
  87    { "glutRemoveOverlay", (const void *) glutRemoveOverlay },
  88    { "glutUseLayer", (const void *) glutUseLayer },
  89    { "glutPostOverlayRedisplay", (const void *) glutPostOverlayRedisplay },
  90    { "glutPostWindowOverlayRedisplay", (const void *) glutPostWindowOverlayRedisplay },
  91    { "glutShowOverlay", (const void *) glutShowOverlay },
  92    { "glutHideOverlay", (const void *) glutHideOverlay },
  93    { "glutCreateMenu", (const void *) glutCreateMenu },
  94    { "glutDestroyMenu", (const void *) glutDestroyMenu },
  95    { "glutGetMenu", (const void *) glutGetMenu },
  96    { "glutSetMenu", (const void *) glutSetMenu },
  97    { "glutAddMenuEntry", (const void *) glutAddMenuEntry },
  98    { "glutAddSubMenu", (const void *) glutAddSubMenu },
  99    { "glutChangeToMenuEntry", (const void *) glutChangeToMenuEntry },
 100    { "glutChangeToSubMenu", (const void *) glutChangeToSubMenu },
 101    { "glutRemoveMenuItem", (const void *) glutRemoveMenuItem },
 102    { "glutAttachMenu", (const void *) glutAttachMenu },
 103    { "glutDetachMenu", (const void *) glutDetachMenu },
 104    { "glutDisplayFunc", (const void *) glutDisplayFunc },
 105    { "glutReshapeFunc", (const void *) glutReshapeFunc },
 106    { "glutKeyboardFunc", (const void *) glutKeyboardFunc },
 107    { "glutMouseFunc", (const void *) glutMouseFunc },
 108    { "glutMotionFunc", (const void *) glutMotionFunc },
 109    { "glutPassiveMotionFunc", (const void *) glutPassiveMotionFunc },
 110    { "glutEntryFunc", (const void *) glutEntryFunc },
 111    { "glutVisibilityFunc", (const void *) glutVisibilityFunc },
 112    { "glutIdleFunc", (const void *) glutIdleFunc },
 113    { "glutTimerFunc", (const void *) glutTimerFunc },
 114    { "glutMenuStateFunc", (const void *) glutMenuStateFunc },
 115    { "glutSpecialFunc", (const void *) glutSpecialFunc },
 116    { "glutSpaceballMotionFunc", (const void *) glutSpaceballMotionFunc },
 117    { "glutSpaceballRotateFunc", (const void *) glutSpaceballRotateFunc },
 118    { "glutSpaceballButtonFunc", (const void *) glutSpaceballButtonFunc },
 119    { "glutButtonBoxFunc", (const void *) glutButtonBoxFunc },
 120    { "glutDialsFunc", (const void *) glutDialsFunc },
 121    { "glutTabletMotionFunc", (const void *) glutTabletMotionFunc },
 122    { "glutTabletButtonFunc", (const void *) glutTabletButtonFunc },
 123    { "glutMenuStatusFunc", (const void *) glutMenuStatusFunc },
 124    { "glutOverlayDisplayFunc", (const void *) glutOverlayDisplayFunc },
 125    { "glutWindowStatusFunc", (const void *) glutWindowStatusFunc },
 126    { "glutKeyboardUpFunc", (const void *) glutKeyboardUpFunc },
 127    { "glutSpecialUpFunc", (const void *) glutSpecialUpFunc },
 128    { "glutJoystickFunc", (const void *) glutJoystickFunc },
 129    { "glutSetColor", (const void *) glutSetColor },
 130    { "glutGetColor", (const void *) glutGetColor },
 131    { "glutCopyColormap", (const void *) glutCopyColormap },
 132    { "glutGet", (const void *) glutGet },
 133    { "glutDeviceGet", (const void *) glutDeviceGet },
 134    { "glutExtensionSupported", (const void *) glutExtensionSupported },
 135    { "glutGetModifiers", (const void *) glutGetModifiers },
 136    { "glutLayerGet", (const void *) glutLayerGet },
 137    { "glutGetProcAddress", (const void *) glutGetProcAddress },
 138    { "glutBitmapCharacter", (const void *) glutBitmapCharacter },
 139    { "glutBitmapWidth", (const void *) glutBitmapWidth },
 140    { "glutStrokeCharacter", (const void *) glutStrokeCharacter },
 141    { "glutStrokeWidth", (const void *) glutStrokeWidth },
 142    { "glutBitmapLength", (const void *) glutBitmapLength },
 143    { "glutStrokeLength", (const void *) glutStrokeLength },
 144    { "glutWireSphere", (const void *) glutWireSphere },
 145    { "glutSolidSphere", (const void *) glutSolidSphere },
 146    { "glutWireCone", (const void *) glutWireCone },
 147    { "glutSolidCone", (const void *) glutSolidCone },
 148    { "glutWireCube", (const void *) glutWireCube },
 149    { "glutSolidCube", (const void *) glutSolidCube },
 150    { "glutWireTorus", (const void *) glutWireTorus },
 151    { "glutSolidTorus", (const void *) glutSolidTorus },
 152    { "glutWireDodecahedron", (const void *) glutWireDodecahedron },
 153    { "glutSolidDodecahedron", (const void *) glutSolidDodecahedron },
 154    { "glutWireTeapot", (const void *) glutWireTeapot },
 155    { "glutSolidTeapot", (const void *) glutSolidTeapot },
 156    { "glutWireOctahedron", (const void *) glutWireOctahedron },
 157    { "glutSolidOctahedron", (const void *) glutSolidOctahedron },
 158    { "glutWireTetrahedron", (const void *) glutWireTetrahedron },
 159    { "glutSolidTetrahedron", (const void *) glutSolidTetrahedron },
 160    { "glutWireIcosahedron", (const void *) glutWireIcosahedron },
 161    { "glutSolidIcosahedron", (const void *) glutSolidIcosahedron },
 162    { "glutVideoResizeGet", (const void *) glutVideoResizeGet },
 163    { "glutSetupVideoResizing", (const void *) glutSetupVideoResizing },
 164    { "glutStopVideoResizing", (const void *) glutStopVideoResizing },
 165    { "glutVideoResize", (const void *) glutVideoResize },
 166    { "glutVideoPan", (const void *) glutVideoPan },
 167    { "glutReportErrors", (const void *) glutReportErrors },
 168    { "glutIgnoreKeyRepeat", (const void *) glutIgnoreKeyRepeat },
 169    { "glutSetKeyRepeat", (const void *) glutSetKeyRepeat },
 170    { "glutForceJoystickFunc", (const void *) glutForceJoystickFunc },
 171    { "glutGameModeString", (const void *) glutGameModeString },
 172    { "glutEnterGameMode", (const void *) glutEnterGameMode },
 173    { "glutLeaveGameMode", (const void *) glutLeaveGameMode },
 174    { "glutGameModeGet", (const void *) glutGameModeGet },
 175    { NULL, NULL }
 176 };
 177
 178
 179 /* XXX This isn't an official GLUT function, yet */
 180 void * GLUTAPIENTRY
 181 glutGetProcAddress(const char *procName)
 182 {
 183    /* Try GLUT functions first */
 184    int i;
 185    for (i = 0; glut_functions[i].name; i++) {
 186       if (strcmp(glut_functions[i].name, procName) == 0)
 187          return (void *) glut_functions[i].address;
 188    }
 189
 190    /* Try core GL functions */
 191 #if defined(_WIN32)
 192   return (void *) wglGetProcAddress((LPCSTR) procName);
 193
 194 #elif  defined(__OS2PM__)
 195   return (void *) wglGetProcAddress((char *) procName);
 196 #elif defined(GLX_ARB_get_proc_address)
 197   return (void *) glXGetProcAddressARB((const GLubyte *) procName);
 198 #else
 199   return NULL;
 200 #endif
 201 }
 202
 203
 204 /* ENDCENTRY */