More doc.

[apitrace-tests] / apps / gl / README.markdown

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+OpenGL test applications.
+
+The applications here were adapted from open-source demos suites (such as Mesa
+demos suite), modified to be non-interactive.
+
+Rather than cover the full breadth of OpenGL functionality, the focus here is
+to cover entrypoints that require special hand-written code to be
+traced/retraced correctly.