kc3-lang/angle

2023-08-03T13:45:34

Metal: Enable fast math based on runtime OS version checks. Chrome compiled with a recent SDK but a low minimum required OS version so fast math was always disabled at compile time. Turn this into a two- part check: Use macros to make sure preserveInvariance can be compiled and @available to do the runtime OS check. Fix the UseFastMathForShaderCompilation check. It was incorrectly inverting two negative conditions. Mark some dEQP precision tests as failing due to fast math. We would prefer to have the performance improvement over some precision loss. Bug: chromium:1468346 Bug: angleproject:8287 Change-Id: I31d9c732a12841cb4d0bc1a555ea1f1ea8a434fc Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4750199 Reviewed-by: Kenneth Russell <kbr@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>