+/*
+ *
+ * Copyright (c) 2001 César Blecua Udías All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * CESAR BLECUA UDIAS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
+ * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
#ifndef __SG_EXTENSIONS_HXX
#define __SG_EXTENSIONS_HXX 1
-#ifndef WIN32
-#include <dlfcn.h>
-#endif
-inline void (*SGLookupFunction(const char *func))() {
+#include <simgear/compiler.h>
-#if defined( WIN32 )
- return (void (*)()) wglGetProcAddress(func);
+bool SGSearchExtensionsString(const char *extString, const char *extName);
+bool SGIsOpenGLExtensionSupported(const char *extName);
-#else
+#endif // !__SG_EXTENSIONS_HXX
- // If the target system s UNIX and the ARB_get_proc_address
- // GLX extension is *not* guaranteed to be supported. An alternative
- // dlsym-based approach will be used instead.
- #if defined( linux ) || defined ( sgi )
- void *libHandle;
- void (*fptr)();
- libHandle = dlopen("libGL.so", RTLD_LAZY);
- fptr = (void (*)()) dlsym(libHandle, func);
- dlclose(libHandle);
- return fptr;
- #else
- return glXGetProcAddressARB(func);
- #endif
-#endif
-}
-
-#endif