Commit a6f22096e3a1370db3677644ff460201d003c457
2015-05-08T18:31:10
Make UnfoldShortCircuit to change AST instead of writing output This is needed to make way for further AST transformations to handle array expressions that need to work correctly together with unfolding short- circuiting operators. This also improves the maintainability of HLSL output by isolating the unfolding into a separate compilation step. The new version of UnfoldShortCircuit traverser will traverse the tree until an expression that needs to be unfolded is encountered. It then unfolds it and gets reset. The traverser will be run repeatedly until no more operations to unfold are found. This helps with keeping the traverser's design relatively simple. All declarations are separated to single declarations before short-circuit unfolding is run. Previously OutputHLSL already output every declaration separately. BUG=angleproject:960 TEST=WebGL conformance tests, angle_unittests, angle_end2end_tests Change-Id: Id769be396adbd4c0223e418980dc464dd855f019 Reviewed-on: https://chromium-review.googlesource.com/270460 Tested-by: Olli Etuaho <oetuaho@nvidia.com> Reviewed-by: Jamie Madill <jmadill@chromium.org>