page for more details about these environment flags.
-Emitting annotations to the trace from GL applications
-------------------------------------------------------
+Emitting annotations to the trace
+---------------------------------
-You can emit string and frame annotations through the
+From OpenGL applications you can embed annotations in the trace file through the
[`GL_GREMEDY_string_marker`](http://www.opengl.org/registry/specs/GREMEDY/string_marker.txt)
and
[`GL_GREMEDY_frame_terminator`](http://www.opengl.org/registry/specs/GREMEDY/frame_terminator.txt)
This has the added advantage of working equally well with gDEBugger.
+From OpenGL ES applications you can embed annotations in the trace file through the
+[`GL_EXT_debug_marker`](http://www.khronos.org/registry/gles/extensions/EXT/EXT_debug_marker.txt)
+extension.
+
+
+For Direct3D applications you can follow the same procedure used for
+[instrumenting an application for PIX](http://technet.microsoft.com/en-us/query/ee417250)
+
+
Dump GL state at a particular call
----------------------------------