Draft: mesa: validate mode given for DrawTransformFeedback
Fixes: KHR-GL30.transform_feedback.api_errors_test
Signed-off-by: Tapani Pälli tapani.palli@intel.com
Fixes: KHR-GL30.transform_feedback.api_errors_test
Signed-off-by: Tapani Pälli tapani.palli@intel.com