Commit 1239ee94fbd8163e872023d2648d58a7d17e7819
2015-03-19T14:38:02
Use the AST analyses to narrow the usage of [[loop]] and [[unroll]] These attributes are now used exactly in the loops and ifs that require them, limiting the number of failed compilations due to excessive unrolling and flattening. Also output Lod0 functions only when needed. Adds unit tests for LOOP, FLATTEN and Lod0 generation. The patch was tested against the WebGL CTS 1.0.4 for which all the failures existed prior to this patch and seem to be unrelated to this change. It also works correctly on the following sites that had trouble with [[loop]] and [[unroll]]: * dev.miaumiau.cat/rayTracer "Skull Demo" * The turbulenz engine particle demo * Lots of ShaderToy samples (including "Volcanic" and "Metropolis") * Google Maps Earth mode * Lots of Chrome Experiments * Lagoa * madebyevan.com/webgl-water * SketchFab * Unit Tests BUG=angleproject:937 BUG=395048 Change-Id: I856de9025f10b79781929ec212dbffc2064a940e Reviewed-on: https://chromium-review.googlesource.com/264791 Reviewed-by: Jamie Madill <jmadill@chromium.org> Tested-by: Corentin Wallez <cwallez@chromium.org>