Implement GL_GREMEDY_string_marker and GL_GREMEDY_frame_terminator.
diff --git a/glcaps.cpp b/glcaps.cpp
new file mode 100644
index 0000000..51a5954
--- /dev/null
+++ b/glcaps.cpp
@@ -0,0 +1,88 @@
+/**************************************************************************
+ *
+ * Copyright 2011 Jose Fonseca
+ * 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 THE
+ * AUTHORS OR COPYRIGHT HOLDERS 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.
+ *
+ **************************************************************************/
+
+
+#include <string.h>
+#include <stdlib.h>
+
+#include <string>
+#include <map>
+
+#include "gltrace.hpp"
+
+
+namespace gltrace {
+
+
+typedef std::map<std::string, const char *> ExtensionsMap;
+
+// Cache of the translated extensions strings
+static ExtensionsMap extensionsMap;
+
+
+// Additional extensions to be advertised
+const char extra_extensions[] =
+ "GL_GREMEDY_string_marker "
+ "GL_GREMEDY_frame_terminator "
+;
+
+
+/**
+ * Translate the GL extensions string, adding new extensions.
+ */
+const char *
+translateExtensionsString(const char *extensions)
+{
+ ExtensionsMap::const_iterator it = extensionsMap.find(extensions);
+ if (it != extensionsMap.end()) {
+ return it->second;
+ }
+
+ size_t extensions_len = strlen(extensions);
+
+ char *new_extensions = (char *)malloc(extensions_len + 1 + sizeof extra_extensions);
+ if (!new_extensions) {
+ return extensions;
+ }
+
+ if (extensions_len) {
+ memcpy(new_extensions, extensions, extensions_len);
+
+ // Add space separator if necessary
+ if (new_extensions[extensions_len - 1] != ' ') {
+ new_extensions[extensions_len++] = ' ';
+ }
+ }
+
+ memcpy(new_extensions + extensions_len, extra_extensions, sizeof extra_extensions);
+
+ extensionsMap[extensions] = new_extensions;
+
+ return new_extensions;
+}
+
+
+} /* namespace gltrace */
+