performance monitor: start measurement interval with a fresh timestamp.

[simgear.git] / simgear / screen / extensions.hxx

diff --git a/simgear/screen/extensions.hxx b/simgear/screen/extensions.hxx
index 949345a82f729ed7805c7ba3d57749fd42ecc7d6..ab5a929fdde01055ae6969e9fc07bd10c1c194e1 100644 (file)
--- a/simgear/screen/extensions.hxx
+++ b/simgear/screen/extensions.hxx
@@ -1,31 +1,34 @@
+/*
+ *
+ * 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