GLUT_FORCE_VISUAL env var to force glut to use a particular visual (debug only)

2006-09-21 15:16:36 +00:00
parent b7d9b1e724
commit 81e0d73780
1 changed files with 17 additions and 0 deletions
@@ -349,13 +349,30 @@ getVisualInfoRGB(unsigned int mode)
    __glutScreen, list);
 }

+static XVisualInfo *
+getVisualInfoID(int id)
+{
+   XVisualInfo temp;
+   int count;
+   temp.visualid = id;
+   return XGetVisualInfo(__glutDisplay, VisualIDMask, &temp, &count);
+}
+
+
 XVisualInfo *
 __glutGetVisualInfo(unsigned int mode)
 {
+  char *visStr;
  /* XXX GLUT_LUMINANCE not implemented for GLUT 3.0. */
  if (GLUT_WIND_IS_LUMINANCE(mode))
    return NULL;

+  visStr = getenv("GLUT_FORCE_VISUAL");
+  if (visStr) {
+     int id = atoi(visStr);
+     return getVisualInfoID(id);
+  }
+
  if (GLUT_WIND_IS_RGB(mode))
    return getVisualInfoRGB(mode);
  else