- When generating Uniform Buffer HLSL code, a 'static const struct {} Name' was created which has been causing compiler issues off and on for years.
- When RemoveUniformBuffersFromSource removed said struct, it parsed the struct's structure to figure out how to translate UniformBuffer.Member into UniformBuffer_Member in code that accessed Uniform Buffers.
- Now, instead of a struct, a "UniformBuffer <Name>" declaration is created and filled with mappings from "UniformBuffer.Member" into the correct code.
- This allows ConstantBuffer objects to be used differently from cbuffer where the former generates "UniformBuffer.Member" and the latter generates "UniformBuffer_Member"
- This also allows resources to always be translated to "UniformBuffer_Member"
- Shader define 'PLATFORM_SUPPORTS_UB_STRUCT' is now 'PLATFORM_SUPPORTS_CONSTANTBUFFER_OBJECT' and will be set on shader formats that support ConstantBuffer<> objects.
- Removed lots of unused code from BindlessResources.ush
#jira UE-195103
#rb dan.elksnitis, jeannoe.morissette
[CL 28058373 by christopher waters in ue5-main branch]
- mostly just replacing them AllowWindowsPlatformTypes.h / HideWindowsPlatformTypes.h
- some other files had both Pre/PostWindowsApi.h and Allow/HideWindowsPlatformTypes.h, so just removed
- some occasional include order changes.
#jira UE-152863
#rnx
#rb Devin.Doucette
[CL 26985385 by david harvey in ue5-main branch]
- Disable COMPILER_SUPPORTS_WAVE_VOTE for Mac
- Fixed bug where Texture2DArray was flattened due to atomics, but bound as Texture2D
- Fixed bug where defines were read incorrectly in shader compiler
#rb Zack.Neyland, Jamie.Hayes
[CL 26291315 by carl lloyd in ue5-main branch]
* Early out when adding uniform buffer resource entries, by checking if uniform buffer had been processed, before processing individual entries.
* Changed resource entry list from a map to an array, saving the cost of map operations adding items to it.
* Resource entries for global uniform buffers cached once at startup.
* Resource entry member names stored in an external buffer, to avoid per-entry string memory allocation overhead.
* Miscellaneous smaller optimizations -- for example, using ByHash to avoid redundant hashing and FString construction.
#jira none
#rnx
#rb jason.nadro dan.elksnitis
#preflight 646cfdbc1134ffac7034af60
[CL 25596308 by jason hoerner in ue5-main branch]
This changelist is a merge of work done in //UE5/Dev-ParallelRendering to remove tech debt in the SRV/UAV create functions. See individual changelist descriptions in that stream for further details, but a summary of the change is as follows:
- We had multiple overloads of each of the RHICreateShaderResourceView and RHICreateUnorderedAccessView functions. Each function had a different set of supported view types and using them was complicated / ambiguous.
- There's now only 2 create functions, and a common FRHIViewDesc descriptor struct, which is stored on the base view class.
- FRHIView takes a reference on the underlying resource, ensuring that RHI views keep their viewed resource alive. This was not the case on some platforms, since it was previously the platform RHI implementation's responsibility.
- Platform RHI implementations resolve an FRHIViewDesc into a full FViewInfo struct using GetViewInfo. This centralizes the logic for computing num mips / num slices / format etc so it is the same across all platforms.
- Views must never be created with nullptr resources. This used to happen in the mesh streamer, but now all views require a real underlying resource. That resource can be a "BUF_NullResource" buffer, which is what the mesh streamer uses as a placeholder for buffers that have not streamed yet.
- We will eventually replace FRHITextureReference with a "null texture", similar to how BUF_NullResource works for buffers. This is not yet implemented, so there is no "null view" of a texture currently.
#rb kenzo.terelst,jeannoe.morissette,dmitriy.dyomin
#preflight 643534642855180717af410e
#jira none
[CL 24989901 by Luke Thatcher in ue5-main branch]
Make sure iOS vertex shaders are compiled with PreserveInvariance option set
#jira UE-179372
#rb jack.porter
#preflight 6412df4cd0208e8564bbb732
[CL 24671983 by dmitriy dyomin in ue5-main branch]
Repurpose XcodeVersionInShaderVersion into UseFullMetalVersionInShaderVersion, setting this to true will force shaders to rebuild for each new Xcode version (reverting to previous behaviour)
#jira UE-179011
#rb Zack.Neyland, Arciel.Rekman, Carl.Lloyd
#lockdown Rolando.Caloca
#preflight 6402755daa00423335e22d0f
[CL 24525802 by calvin zheng in ue5-main branch]
