yuriy odonnell 07aeb4900e Exclude ray tracing shaders from SM5 if it's disabled for D3D12 ...

* Add ITargetPlatform::GetRayTracingShaderFormats(), with default implementation that falls back to GetAllTargetedShaderFormats() if HWRT is enabled for a platform
* Override GetRayTracingShaderFormats() for TGenericWindowsTargetPlatform to return only enabled D3D12 and VK shader formats (excluding D3D11)
* Use GetRayTracingShaderFormat() and UsesRayTracing() to configure GRayTracingPlaformMask (the mask contains one bit per shader platform)

Previously all bits of GRayTracingPlaformMask were set if project uses ray tracing, then shader platform bits were disabled for all possible shader formats for platforms that don't support ray tracing.
If SM5 was disabled for D3D12, ray tracing shaders would still get compiled for it because the corresponding bit was still set in GRayTracingPlaformMask.

With this change, SM5 bit will no longer be set in GRayTracingPlaformMask in the editor if it is disabled for D3D12 RHI for the project, so ray tracing shaders won't be compiled.
When running a packaged build, GRayTracingPlaformMask is now set to 0 or 1 based on global project setting (r.RayTracing) and whether the current machine+RHI supports ray tracing.

#rb christopher.waters, jason.nadro
#preflight 62bd0dea3f0d6beee259b636

#ROBOMERGE-AUTHOR: yuriy.odonnell
#ROBOMERGE-SOURCE: CL 20897852 via CL 20898485 via CL 20899239
#ROBOMERGE-BOT: UE5 (Release-Engine-Staging -> Main) (v971-20777995)

[CL 20901755 by yuriy odonnell in ue5-main branch]

2022-06-30 15:44:00 -04:00

..

Classes

Reworking shader platform settings on Windows to be per-RHI. This removes the ill-fated "min/max feature level" configs that were just causing confusion.

2022-05-20 15:09:09 -04:00

Private

Exclude ray tracing shaders from SM5 if it's disabled for D3D12

2022-06-30 15:44:00 -04:00

WindowsTargetPlatform.Build.cs

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