+extern bool debug;
+
+
+bool
+checkExtension(const char *extName, const char *extString);
+
+
+template< class T >
+class Attributes {
+protected:
+ std::vector<T> attribs;
+
+public:
+ void add(T param) {
+ attribs.push_back(param);
+ }
+
+ void add(T pname, T pvalue) {
+ add(pname);
+ add(pvalue);
+ }
+
+ void end(void) {
+ add(0);
+ }
+
+ operator T * (void) {
+ return &attribs[0];
+ }
+
+ operator const T * (void) const {
+ return &attribs[0];
+ }
+};
+
+