-moves optimization pass to the async compilation pipeline (including moving it to it's own file, out of NiagaraSystem)
-splits up the NIAGARA_VM_EXP preprocessor define into VECTORVM_SUPPORTS_LEGACY & VECTORVM_SUPPORTS_EXPERIMENTAL allowing support of one, the other or both (the default)
#rb shawn.mcgrath
#jira none
#preflight 623c85cd1302f69e9aa0b1d7
[CL 19496739 by rob krajcarski in ue5-main branch]
- curve sampling DIs changed to 4-wide
- Off by default
#rb stu.mckenna #preflight 620bba0e4353dc61c7f60f39
[CL 18996550 by shawn mcgrath in ue5-main branch]
External functions should no longer access FVectorVMContext directly and instead use the helper member functions in the NiagaraDataInterfaceFunctionContext class... this should have zero effect without NIAGARA_EXP_VM defined... if it is defined then it'll use the experimental VM functions, which are not included in this CL.
#rb shaun.kime #jira none #okforgithub public
#ROBOMERGE-SOURCE: CL 16908052 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v836-16769935)
[CL 16908059 by shawn mcgrath in ue5-release-engine-test branch]
-changes the function table to be an array of function pointers to allow for the redirection without copies/reallocations
-eliminates 2nd most common allocation in cases with large instance counts in niagara
#rb stu.mckenna
#ROBOMERGE-SOURCE: CL 12146347 via CL 12146348
#ROBOMERGE-BOT: (v659-12123632)
[CL 12146350 by rob krajcarski in Main branch]
#RB Rob.Krajcarski, Stu.McKenna
#JIRA UE-84463
#ROBOMERGE-OWNER: arne.schober
#ROBOMERGE-AUTHOR: arne.schober
#ROBOMERGE-SOURCE: CL 12105113 via CL 12121713
#ROBOMERGE-BOT: (v657-12064184)
[CL 12121717 by arne schober in Main branch]
* added functions which can retrieve the IDs of the particles spawned in the last tick
* added missing barriers on source buffers when reading from another emitter
* fixed bug when more than one DI function was used in a module (bad alignment on the elements of the array of attribute indices)
Persistent IDs:
* replaced ClearUAV with a custom shader, so we can set sane barriers instead of the stuff that ClearUAV() forces. Dev-Rendering replaced ClearUAV() with a better API, but I didn't want to wait for that merge.
* grouped together all the ID buffer clears before the simulation dispatches, and all the free ID list updates after rendering, so they can overlap and to avoid stalls
Barriers:
* fixed a bogus compute to graphics transition on the ID to index buffer
* when running multiple ticks, only the outputs of the final tick are transitioned to graphics
* automatic CS cache flushes are disabled once before running all the ticks and enabled at the end, instead of doing it for each tick
#jira UE-84717
#rb Stu.McKenna
#ROBOMERGE-OWNER: mihnea.balta
#ROBOMERGE-AUTHOR: mihnea.balta
#ROBOMERGE-SOURCE: CL 11163241 via CL 11163243
#ROBOMERGE-BOT: (v640-11091645)
[CL 11167081 by mihnea balta in Main branch]
-reduces fixed concurrent CPU costs of emitters by about 15%
-emitter parameter storage remains in place for non-system parameters
#rb stu.mckenna, simon.tovey
#ROBOMERGE-OWNER: rob.krajcarski
#ROBOMERGE-AUTHOR: rob.krajcarski
#ROBOMERGE-SOURCE: CL 11082540 via CL 11082550
#ROBOMERGE-BOT: (v637-11041722)
[CL 11082603 by rob krajcarski in Main branch]
#rnx
#rb none
#ROBOMERGE-OWNER: ryan.durand
#ROBOMERGE-AUTHOR: ryan.durand
#ROBOMERGE-SOURCE: CL 10869210 via CL 10869511 via CL 10869900
#ROBOMERGE-BOT: (v613-10869866)
[CL 10870549 by ryan durand in Main branch]
Left packs the data with shuffles instead of branching on if a particle is valid, and claims blocks of indices rather than one at a time.
VectorIntShuffle intrinsic has been added locally to the VectorVM and is only included for selected platforms
#rb stu.mckenna, simon.tovey
#ROBOMERGE-SOURCE: CL 10594706 via CL 10594709
#ROBOMERGE-BOT: (v607-10590470)
[CL 10594712 by rob krajcarski in Main branch]
Left packs the data with shuffles instead of branching on if a particle is valid, and claims blocks of indices rather than one at a time.
#rb stu.mckenna, simon.tovey
#ROBOMERGE-SOURCE: CL 10593082 via CL 10593089
#ROBOMERGE-BOT: (v607-10590470)
[CL 10593090 by rob krajcarski in Main branch]
[FYI] nicholas.goldstein
#rnx
#ROBOMERGE-SOURCE: CL 10062477 via CL 10062526
#ROBOMERGE-BOT: (v574-10069753)
[CL 10071545 by stu mckenna in Main branch]
- Read ByteCode directly if unalgned loads are supported to condense 3 opts into 1 when reading a uint16
- Pre-calculate instance loops for VECTOR_WIDTH_FLOATS to avoid each vector op having to round / divide instance counts
- Added runtime optimization of the VM script, this currently boils down to a function call per VM invoke + storing the data required
- Use vm.OptimizeVMByteCode to enable optimized code generation
- Use vm.UseOptimizedVMByteCode to enable running optimized code rather the traditional byte code
[FYI] simon.tovey,rob.krajcarski,shaun.kime
#rnx
#ROBOMERGE-SOURCE: CL 9962648 via CL 9964955
#ROBOMERGE-BOT: (v560-9963197)
[CL 9965540 by stu mckenna in Main branch]
