* Add FPrimitiveSceneProxy::AllowInstanceCullingOcclusionQueries() method to allow occlusion queries (disallowed by default)
* Add PRIMITIVE_SCENE_DATA_FLAG_INSTANCE_CULLING_OCCLUSION_QUERIES
* Allow OQ for static meshes only
* Incompatible instances are treated as visible during OQ instance culling pass
* Tweak help text forVisualizeInstanceOcclusionQueries visualize menu entry
Only certain objects may benefit from per-pixel occlusion culling and otherwise HZB-based culling is sufficient.
#rb Jeremy.Moore
[CL 26501221 by yuriy odonnell in ue5-main branch]
- RHICreate{Vertex, Index, Structured}Buffer
- RHICreate{ShaderResource, UnorderedAccess}View
- RHIUpdateUniformBuffer
- Various initialization / locking methods for helper buffer types in RHIUtilities.h
The goal is to continue to force resource creation through command lists to avoid surprises with moving things off the render thread.
#rb christopher.waters
[CL 26183242 by zach bethel in ue5-main branch]
- This reduces the number of back and forth conversion between FTransform and FMatrix
[FYI] jeremy.moore
#rb benn.gallagher, michael.bao, chris.caulfield, vincent.robert
#preflight 645c9285ea1c7ba4d67d0fbc
[CL 25438640 by cedric caillaud in ue5-main branch]
This is built as part of geometry collection DDC contents.
Reworked scene proxy to use this data. Some big changes there:
* Tidied up hit proxy code so that all hit proxy clients use the same path.
* Removing of internal faces are now handled without an additional index buffer by always storing internal faces at the end of a section and providing different section descriptions for including internal faces.
* Dynamic geometry hiding in editor is now done by zeroing transforms instead of rebuilding the index buffer.
#rb cedric.caillaud
#preflight 63edc2e55c7bd278c11efe51
[CL 24261113 by jeremy moore in ue5-main branch]
On local testing, average performance of the function went from 27ms to 11ms
- Changed UVs data layout in FGeometryCollectionConstantData to be an array of UVChannels instead of an array of vertices containing each multiple channels, this reduces allocations quite a lot
- Avoid memcpy by passing array by reference to BuildMeshSections
- Use batched parallelFor for copying bone colors and UVChannels
- Rewrite indices remap to be O(N + M) instead of O(N * M)
Most of the remaining cost is in copying the arrays now
Future work could include making a copy per thread ( but may have to keep allocation on the calling thread )
#rb jimmy.andrews, brice.criswell, Bryan Sefcik
#preflight 6387971f3377450900d27163
[CL 23340834 by cedric caillaud in ue5-main branch]
- Currently disabled by default (controlled using r.RayTracing.Nanite.Mode)
- Nanite triangle data is streamed out to temporary buffers and used to build BLASes.
- For hit shaders, instead of having to keep uncompressed vertex/index buffers, nanite data is referenced using an auxiliary buffer to identify page/cluster indices.
- BLAS build:
- Whenever a new Nanite page is installed/uninstalled, a rebuild of the associated mesh BLAS is requested.
- Compute shader is dispatched to stream out mesh data to temporary buffer as well as auxiliary data used by hit shaders.
- CPU then does a readback of part of the data to determine size of the BLAS etc and kicks off a BLAS rebuild.
- Added raytracing support to Nanite Vertex Factory.
#rb rune.stubbe, yuriy.odonnell
#preflight 6331cec7b20e73a0983d9326
[CL 22203852 by tiago costa in ue5-main branch]
This saves about ~40% of the cloth simulation cost.
#rb jeff.newquist
#ROBOMERGE-OWNER: evgenii.babinets
#ROBOMERGE-AUTHOR: evgenii.babinets
#ROBOMERGE-SOURCE: CL 20294167 via CL 20294181 via CL 20295375 via CL 20295420
#ROBOMERGE-BOT: UE5 (Release-Engine-Staging -> Main) (v948-20297126)
[CL 20305169 by evgenii babinets in ue5-main branch]
Added UI for changing minimum residency
Decoupled imposter data allocation from root page allocation
Removed convoluted logic around a page's dependencies including itself for legacy reasons
Made streaming of imposter data optional (r.Nanite.Streaming.Imposters)
#rb andrew.lauritzen, ola.olsson
#preflight 6163f8f8eaa06c0001e409ee
#lockdown michal.valient
#ROBOMERGE-OWNER: jon.nabozny
#ROBOMERGE-AUTHOR: rune.stubbe
#ROBOMERGE-SOURCE: CL 17770690 via CL 17986013 via CL 18368123 via CL 18368152
#ROBOMERGE-BOT: STARSHIP (Release-Engine-Staging -> Release-Engine-Test) (v895-18170469)
[CL 18368223 by jon nabozny in ue5-release-engine-test branch]
This represents UE4/Main @17774255, Release-5.0 @17791557 and Dev-PerfTest @17789485
[CL 17794212 by aurel cordonnier in ue5-release-engine-test branch]
