AuroraMiddleware/SPIRV-Cross
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3 Commits

Author SHA1 Message Date
Chip Davis
c7ce92a95b MSL: Manually update BuiltInHelperInvocation when a fragment is discarded. 
Some Metal devices have a bug where `simd_is_helper_thread()` won't
return true after a fragment has been discarded. We can work around this
by manually setting `gl_HelperInvocation` upon discarding a fragment.
This is fairly unintrusive, so it is enabled by default. I've made it an
option so that, when the bug is fixed, we can disable it.
 2022-11-19 23:48:26 -08:00
Hans-Kristian Arntzen
b192b8887a MSL: Consider that gl_IsHelperInvocation can be Volatile. 
Just emit simd_is_helper_thread() directly.
 2022-03-04 11:46:35 +01:00
Hans-Kristian Arntzen
15d29f00e2 Add test for SPIR-V 1.6 Volatile HelperInvocation. 2022-03-04 11:19:33 +01:00