- PLATFORM_SUPPORTS_UB_STRUCT was set for RT shaders, but RemoveUniformBuffersFromSource was still being called.
- New IsUsingSM66 function to keep consistent usage of ELanguage::SM6 since not all RT shaders use that 'language'
- Removing USE_SHADER_MODEL_6_6 since SM6.6 is locked in
- Changing FShaderFormatD3D versions to be Guids instead of numbers to better handle resolving changes in different branches.
#jira UE-195102
#rb yuriy.odonnell
[CL 27872532 by christopher waters in ue5-main branch]
- Added support for up to 32 samplers to the D3D12 RHI.
- Added 'MaxSamplers' to ShaderPlatform in DataDrivenPlatformInfo, this is defaulted to 16 for all shader platforms and can be modified the the DDPI ini files. This value will set the shader compiler define 'PLATFORM_MAX_SAMPLERS'.
- Added a 'RequiredSamplersSwitch' material editor node to branch based on a given shader platform's maximum sampler count.
- To support more than 16 samplers on feature level SM5 platforms Dxc and sm6.0 are used to compile the shader. On platforms that don't support Dxc and sm6.0 the preivew menu item will be disabled.
#jira UE-191404
#rb florin.pascu
[CL 27850133 by michael wanderson in ue5-main branch]
- 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]
