- PC previews of SM6 platforms weren't going to DXC correctly.
- Preview platform include paths weren't initialized when compiling with local-only shader compiles.
- A few preview platform DDSPI settings weren't being initialized correctly based on the capabilites of the preview format.
#rb arciel.rekman, dan.elksnitis
[CL 26589147 by christopher waters in ue5-main branch]
- Setting FXC="..." is different from setting "FXC=...", the former will break uses of just %FXC% when the path has spaces in it.
- Switching to all "FXC=..." and "%FXC%" to make the variable consistent.
- Tweaking the bat file formatting inside of D3DShaderCompiler to make it more readable.
#rb dan.elksnitis
[CL 25853249 by christopher waters in ue5-main branch]
- add new fields to FShaderCompilerOutput which should be populated with the shader source and entry point name if modified by a backend compile process (in a format implementing the independent preprocessing API). this is intended to supercede "OptionalFinalShaderSource" for such shader formats, as well as being used as the source for preprocessed debug dumps when enabled.
- modify the PCD3D shader format to use these fields as intended (and so fix the debug output for pipelines which remove unused interpolators to match the final modified source).
#rb Laura.Hermanns
#preflight 64777f850848b7126dda194c
[CL 25706448 by dan elksnitis in ue5-main branch]
We don't want to restrict other shaders to resource binding tier 2 or higher even for CFLAG_ForceDXC or CFLAG_WaveOperations.
Invalidating PCD3D_SM5 and PCD3D_SM6 shaders.
#rb yuriy.odonnell
#preflight 646cd8d764351d76f32b449c
[CL 25585973 by christopher waters in ue5-main branch]
- Support structured buffers in HLSL backend of SPIRV-Cross (PR #2143).
- Integrate SPIRV-Cross fix to forward opaque types in GLSL backend (PR #2110).
- Integrate SPIRV-Cross fix to use actual field offset to validate vec4 boundary alignment (#PR 2139).
- Integrate SPIRV-Cross fix to not restrict SV_RenderTargetArrayIndex to GS and MS (#PR 2138).
- Make SV_Position decoration as implicitly invariant optional (Used to address Z-fighting issues in Vulkan and Metal; Drastically impacts vertex shader performance on certain platforms).
- Don't force DXC for all shaders when r.Substrate is enabled.
#jira UE-174555
#rb Sebastien.Hillaire, Carl.Lloyd, Dan.Elksnitis
#fyi Brian.White, Jason.Nadro, JeaNoe.Morissette, Yuriy.Odonnell, Guillaume.Abadie
#preflight 6453d3df0e33f2d51d2b032e
[CL 25353473 by Laura Hermanns in ue5-main branch]
