Textures and such.

src/xenia/gpu/gl4/gl4_gpu.cc

@@ -15,6 +15,10 @@
 DEFINE_bool(thread_safe_gl, false,
             "Only allow one GL context to be active at a time.");
 
+DEFINE_bool(gl_debug_output, false, "Dump ARB_debug_output to stderr.");
+DEFINE_bool(gl_debug_output_synchronous, true,
+            "ARB_debug_output will synchronize to be thread safe.");
+
 namespace xe {
 namespace gpu {
 namespace gl4 {