$OpenBSD$
--- src/tools/radiant/radiant/render/qgl.cpp.orig	Mon Apr 25 19:47:45 2011
+++ src/tools/radiant/radiant/render/qgl.cpp	Mon Apr 25 19:48:56 2011
@@ -34,7 +34,7 @@
 # include <wtypes.h>
 PROC ( WINAPI * qwglGetProcAddress)(LPCSTR);
 
-#elif defined(__linux__) || defined (__FreeBSD__) || defined(__APPLE__)
+#elif defined(__linux__) || defined (__FreeBSD__) || defined(__APPLE__) || defined (__OpenBSD__)
 
 # include <GL/glx.h>
 # include <dlfcn.h>
@@ -55,7 +55,7 @@ void QGL_Shutdown (OpenGLBinding& table)
 
 #if defined(WIN32)
 	qwglGetProcAddress = 0;
-#elif defined(__linux__) || defined (__FreeBSD__) || defined(__APPLE__)
+#elif defined(__linux__) || defined (__FreeBSD__) || defined(__APPLE__) || defined (__OpenBSD__)
 	qglXQueryExtension = 0;
 	qglXGetProcAddressARB = 0;
 #else
@@ -133,7 +133,7 @@ typedef int (QGL_DLLEXPORT *QGLFunctionPointer) ();
 
 QGLFunctionPointer QGL_getExtensionFunc (const char* symbol)
 {
-#if defined(__linux__) || defined (__FreeBSD__) || defined(__APPLE__)
+#if defined(__linux__) || defined (__FreeBSD__) || defined(__APPLE__) || defined (__OpenBSD__)
 	if (qglXGetProcAddressARB == 0) {
 		return reinterpret_cast<QGLFunctionPointer> (glInvalidFunction);
 	} else {
@@ -170,7 +170,7 @@ int QGL_Init (OpenGLBinding& table)
 
 #if defined(WIN32)
 	qwglGetProcAddress = wglGetProcAddress;
-#elif defined(__linux__) || defined (__FreeBSD__) || defined(__APPLE__)
+#elif defined(__linux__) || defined (__FreeBSD__) || defined(__APPLE__) || defined (__OpenBSD__)
 	qglXQueryExtension = glXQueryExtension;
 	qglXGetProcAddressARB = (glXGetProcAddressARBProc) dlsym(RTLD_DEFAULT, "glXGetProcAddressARB");
 	if ((qglXQueryExtension == 0) || (qglXQueryExtension(GDK_DISPLAY(), 0, 0) != True))