+static inline void assert_gl(const char* message)
+{
+#ifdef DEBUG
+ check_gl_error(message);
+#else
+ (void) message;
+#endif
+}
+
+#else
+
+#define GLenum int
+#define GLint int
+#define GL_SRC_ALPHA 0
+#define GL_ONE_MINUS_SRC_ALPHA 1
+#define GL_RGBA 2
+#define GL_ONE 3
+