* Moved Nanite resource ID and hierarchy offset back to primitive data (indirection cost is largely noise these days, and memory savings is more important - GetInstanceData() fetches this data and stores in the pre-existing registers so all the callsites don't have to worry about it).
* Removed FNaniteInfo from FPrimitiveInfo (and the type itself) in favor of just having a 32bit per-instance hierarchy root offset. Hierarchy offset and runtime resource ID just sourced from primitive.
* Removed PrimitiveID from CPU instance data (GPU still needs it). This value was redundantly stored per-instance, and now the GPU Scene upload just blits it over from primitive when the instance data is uploaded.
* Added new virtual GetNaniteResourceInfo on FPrimitiveSceneProxy that retrieves the Nanite resource ID and hierarchy offset stored on a given primitive (needed now that FPrimitiveInstance doesn't cache a copy). The non-virtual FPrimitiveSceneProxy::IsNaniteMesh() helper is used to avoid this virtual function call for non-Nanite proxies.
* Removed deprecated and no longer referenced Nanite::FResources array on FNaniteGeometryCollectionSceneProxy
* Removed expensive per-instance checks() in a few spots
* Stubbed out upcoming per instance payload allocator offset
* Removed deprecated and never referenced non-GPUScene GetInstanceData uniform buffer path
* Significantly cleaned up and optimized a lot of ISM instance data retrieval, including avoiding unnecessary FRenderTransform <-> FMatrix conversions.
* Removed GetInstanceShaderValues API, it was inefficient and annoying to require retrieval of all parameters when often only one or two of them were ever used. In some cases even the origin was unused but .w was needed because of the per-instance random packing.
* Implemented explicit GetInstanceRandomID() accessor to fetch (under current packing) Origin.W without exposing this to the callsites
* Implemented public API for GetInstanceLightMapData(), since the internal version was only accessible by GetInstanceShaderValues()
* Renamed GetInstanceShaderCustomDataValues() -> GetInstanceCustomDataValues() for API consistency
#rb jason.nadro, krzysztof.narkowicz
[FYI] rune.stubbe, brian.karis
#ROBOMERGE-OWNER: graham.wihlidal
#ROBOMERGE-AUTHOR: graham.wihlidal
#ROBOMERGE-SOURCE: CL 16583156 via CL 16583193
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v828-16531559)
[CL 16583202 by graham wihlidal in ue5-release-engine-test branch]
* Moved Nanite resource ID and hierarchy offset back to primitive data (indirection cost is largely noise these days, and memory savings is more important - GetInstanceData() fetches this data and stores in the pre-existing registers so all the callsites don't have to worry about it).
* Removed FNaniteInfo from FPrimitiveInfo (and the type itself) in favor of just having a 32bit per-instance hierarchy root offset. Hierarchy offset and runtime resource ID just sourced from primitive.
* Removed PrimitiveID from CPU instance data (GPU still needs it). This value was redundantly stored per-instance, and now the GPU Scene upload just blits it over from primitive when the instance data is uploaded.
* Added new virtual GetNaniteResourceInfo on FPrimitiveSceneProxy that retrieves the Nanite resource ID and hierarchy offset stored on a given primitive (needed now that FPrimitiveInstance doesn't cache a copy). The non-virtual FPrimitiveSceneProxy::IsNaniteMesh() helper is used to avoid this virtual function call for non-Nanite proxies.
* Removed deprecated and no longer referenced Nanite::FResources array on FNaniteGeometryCollectionSceneProxy
* Removed expensive per-instance checks() in a few spots
* Stubbed out upcoming per instance payload allocator offset
* Removed deprecated and never referenced non-GPUScene GetInstanceData uniform buffer path
* Significantly cleaned up and optimized a lot of ISM instance data retrieval, including avoiding unnecessary FRenderTransform <-> FMatrix conversions.
* Removed GetInstanceShaderValues API, it was inefficient and annoying to require retrieval of all parameters when often only one or two of them were ever used. In some cases even the origin was unused but .w was needed because of the per-instance random packing.
* Implemented explicit GetInstanceRandomID() accessor to fetch (under current packing) Origin.W without exposing this to the callsites
* Implemented public API for GetInstanceLightMapData(), since the internal version was only accessible by GetInstanceShaderValues()
* Renamed GetInstanceShaderCustomDataValues() -> GetInstanceCustomDataValues() for API consistency
#rb jason.nadro, krzysztof.narkowicz
[FYI] rune.stubbe, brian.karis
#ROBOMERGE-OWNER: graham.wihlidal
#ROBOMERGE-AUTHOR: graham.wihlidal
#ROBOMERGE-SOURCE: CL 16583156
#ROBOMERGE-BOT: (v828-16531559)
#ROBOMERGE-CONFLICT from-shelf
[CL 16583193 by graham wihlidal in ue5-main branch]
- Dont force a rebuild on load for the size specific default changes.
#rb Benn.Gallagher
#preflight 60ba326487fd8e0001524686
[CL 16559790 by Brice Criswell in ue5-main branch]
This change is another basis for more instance data and GPUScene improvements coming down the pipe.
#rb jason.nadro, krzysztof.narkowicz, zach.bethel, zak.middleton, rune.stubbe, ben.woodhouse
[FYI] brian.karis, ola.olsson
#preflight 60b9608d0249c300016598de
#ROBOMERGE-OWNER: graham.wihlidal
#ROBOMERGE-AUTHOR: graham.wihlidal
#ROBOMERGE-SOURCE: CL 16555619
#ROBOMERGE-BOT: (v828-16531559)
#ROBOMERGE-CONFLICT from-shelf
[CL 16555914 by graham wihlidal in ue5-main branch]
(Note: works in BeginPlay or Tick, but not from construction script yet)
#rb cedric.caillaud,brice.criswell,zhenglin.geng
#jira none
#preflight 60b0394e63fc6e000137e186
[CL 16510057 by Chris Caulfield in ue5-main branch]
Fix bad merge from CL 16281007 where in particle SOA kinematics end up in the active particle array
#rb none
#jira none
#fyi ori.cohen
[CL 16498216 by cedric caillaud in ue5-main branch]
#ROBOMERGE-SOURCE: CL 16491352 in //UE5/Private-Frosty/...
#ROBOMERGE-BOT: STARSHIP (Private-Frosty -> Main) (v823-16466674)
[CL 16491365 by michael forot in ue5-main branch]
