Fixed by
https://swiftshader-review.googlesource.com/c/SwiftShader/+/42548/

Bug: angleproject:4416
Change-Id: I703608d7d3fa15f2428a832896a68893efbb35ae
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2119234Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>