dan elksnitis cfa3219e31 [shaders] use ImageGetDigestStream for hashing DXC DLLs (to exclude signature/certificate data) instead of hashing the entire binary. This allows us to get the same version # for both signed and unsigned DLLs, and so fixes recompilation of shaders on initial startup of packaged release builds. Hashing was changed to xxhash which provides an iterative hashing API as required by this change (cityhash does not have such an API). ...

#jira UE-175638
#preflight 63e3e34dc11233cdcad2694c
#rb Yuriy.ODonnell
#rb Jason.Nadro
#lockdown Juan.Canada

[CL 24082354 by dan elksnitis in ue5-main branch]

2023-02-08 16:13:26 -05:00

..

Private

[shaders] use ImageGetDigestStream for hashing DXC DLLs (to exclude signature/certificate data) instead of hashing the entire binary. This allows us to get the same version # for both signed and unsigned DLLs, and so fixes recompilation of shaders on initial startup of packaged release builds. Hashing was changed to xxhash which provides an iterative hashing API as required by this change (cityhash does not have such an API).

2023-02-08 16:13:26 -05:00

Public

Unify shader debug name in shader code output for DXC backends to improve cache hits.

2023-02-07 11:15:47 -05:00

ShaderCompilerCommon.Build.cs

[shaders] use ImageGetDigestStream for hashing DXC DLLs (to exclude signature/certificate data) instead of hashing the entire binary. This allows us to get the same version # for both signed and unsigned DLLs, and so fixes recompilation of shaders on initial startup of packaged release builds. Hashing was changed to xxhash which provides an iterative hashing API as required by this change (cityhash does not have such an API).

2023-02-08 16:13:26 -05:00