- Workaround issue with compiler optimization by using copy constructor.
#rb none
#preflight none
#fyi krzysztof.narkowicz
[CL 23313007 by tiago costa in ue5-main branch]
- The number of samples returned is the square number closer to the requested number.
- Updated code paths using the function to request a number of samples close to what they previously got.
#rb Krzysztof.Narkowicz
#preflight 628de9e7f622d972b5732cbb
#ROBOMERGE-AUTHOR: tiago.costa
#ROBOMERGE-SOURCE: CL 20361675 via CL 20361695 via CL 20361702
#ROBOMERGE-BOT: UE5 (Release-Engine-Staging -> Main) (v948-20297126)
[CL 20362041 by tiago costa in ue5-main branch]
* Mostly two sided meshes are assumed to be foliage and forced to be repsented as a cube projection
* Lowered card min density treshold for cube projections
[FYI] Daniel.Wright
#ROBOMERGE-AUTHOR: krzysztof.narkowicz
#ROBOMERGE-SOURCE: CL 19424752 via CL 19424760
#ROBOMERGE-BOT: UE5 (Release-Engine-Staging -> Main) (v930-19419903)
[CL 19425489 by krzysztof narkowicz in ue5-main branch]
* Useful to hide window frames in the distance field to work around over-occlusion
#ROBOMERGE-AUTHOR: daniel.wright
#ROBOMERGE-SOURCE: CL 19416394 via CL 19416400
#ROBOMERGE-BOT: UE5 (Release-Engine-Staging -> Main) (v928-19376421)
[CL 19417073 by daniel wright in ue5-main branch]
FLinearColor has also been modified to make any double->float conversions explicit. Previously all 3D TVector versions were allowed to be implicit and thus could convert TVector<double> => FLinearColor => TVector4<float>.
Fixed up all engine and game casts. Added "//LWC_TODO: precision loss" around any explicit casts that previously were silently explicit and we may need to revisit for precision loss analysis.
#jira UE-122085
#rb Ben.Ingram, Andrew.Davidson
#preflight 61f24af473238441cb7bb0f1
#ROBOMERGE-AUTHOR: zak.middleton
#ROBOMERGE-SOURCE: CL 18751249 in //UE5/Release-5.0/... via CL 18751253 via CL 18751319
#ROBOMERGE-BOT: UE5 (Release-Engine-Test -> Main) (v903-18687472)
[CL 18751326 by zak middleton in ue5-main branch]
* Generate surfels directly from the triangles instead of relying on ray tracing, to fix coverage issues on some meshes
* Surfels which are inside meshes (surrounded by back faces) or are too close to geometry are discarded
* New surfel clustering algorithm, which inserts one seed after another and tries to iteratively grow clusters in order to find the best set of seeds. Final step is to reset all clusters and grow all simultaneously from previously selected seeds.
* Cluster growing is based on normal, distance and surfel visibility (don�t cluster surfels near geometry first, as it can cause algorithm to be stuck in a local minimum)
* Runtime sampling has strict culling based on the angle and card AABB. Additionally, the tri-planar blending zone was tightened. This improves performance. 0.62-0.5 ms.
* Added various visualizations and CVars for card generation debugging
* Fixed card visibility bug, where card could influence outside of it�s range due to negative shadow map visibility
[FYI] Daniel.Wright, Patrick.Kelly
#ROBOMERGE-SOURCE: CL 16897632
#ROBOMERGE-BOT: (v836-16769935)
[CL 16916104 by krzysztof narkowicz in ue5-main branch]
* SDFs are now generated, allocated from the atlas and uploaded in 8^3 bricks (7^3 unique data, half voxel padding).
* Tracing must load the brick index from the indirection table, and only bricks near the surface are stored
* 3 mips are now generated, with the lowest resolution always loaded and the other 2 streamed
* SDFs are now G8 narrow band. Lower resolution mips must be traversed when querying distance to nearest surface far away from the surface
* The Distance Field Brick Atlas is now stored for each FScene and dynamically resized based on needs with a GPU memcopy
* Brick atlas uses a 1d pooled allocator which has no fragmentation and greatly reduces packing waste over the 3d allocator
* Added new indirection for Distance Field Asset data, so that only a single entry needs to be updated when a mip is streamed in or out in scenes with millions of instances
* Compute shaders operating on distance field instances generate streaming requests, which are async read back to CPU, turned into IO requests, which are polled and when complete uploaded to atlases
* Any mesh instance inside the Global SDF extent (200m) requests mip1, and at 50m requests mip2
* Now using a batched compute scatter to upload to the distance field atlas instead of RHIUpdateTexture3d, to bypass alignment restrictions and per-upload overhead
* Distance Field streaming uses an async task to move Memcpy and IO request overhead off of the Rendering Thread
* Distance Field Visualization now computes a normal from the SDF gradient and does simple lighting to better visualize the scene representation
* Increased r.DistanceFields.MaxPerMeshResolution from 128 to 512, to better represent large objects
* Mesh SDF generation now uses an Embree point query to calculate closest unsigned distance, and then a much smaller set of rays to count backfaces for negative region determination, for a 11x speedup
* Upgraded mesh utilities to Embree 3.12.2 to get point queries
* Fixed wrong transform used for SDF normals in Lumen, causing non-uniformly scaled meshes to have incorrect Surface Cache interpolation
* Fixed Static Mesh materials not getting PostLoaded before SDF build, causing their blend modes to be wrong for the build, which corrupts the DDC. Also included those blend modes in the DDC key.
Original costs on 1080 GTX (full updates on everything and no screen traces)
10.60ms UpdateGlobalDistanceField
3.62ms LumenReflectiveTest.DirectionalLight_1 Shadowmap 1
1.73ms VoxelizeCards Clipmaps=[0,1,2,3]
0.38ms TraceCards 1 dispatch 1 groups
0.51ms TraceCards 1 dispatch 1 groups
Sparse SDF costs
12.06ms UpdateGlobalDistanceField
4.35ms LumenReflectiveTest.DirectionalLight_1 Shadowmap 1
2.30ms VoxelizeCards Clipmaps=[0,1,2,3]
0.69ms TraceCards 1 dispatch 1 groups
0.77ms TraceCards 1 dispatch 1 groups
Tested: TopazEntry PC, Reverb PC and PS5, EngineTests, QAGame, Rift, Frosty P_Construct_WP, FortGPUTestbed
#rb Krzysztof.Narkowicz
#ROBOMERGE-OWNER: Daniel.Wright
#ROBOMERGE-AUTHOR: daniel.wright
#ROBOMERGE-SOURCE: CL 15784493 in //UE5/Release-5.0-EarlyAccess/...
#ROBOMERGE-BOT: STARSHIP (Release-5.0-EarlyAccess -> Main) (v783-15756269)
#ROBOMERGE-CONFLICT from-shelf
[CL 15790658 by Daniel Wright in ue5-main branch]
* r.LumenScene.MeshCardsMaxLOD controls representation quality. With 0 being a box projection
* New card placement to focus on important parts of a mesh (skip non visible parts)
* Replaced CubeMapTrees with MeshCards. Instead of a big volume texture lookup there are now 6 lists of decals (one per axis)
* Merged distance field and mesh card Embree setup code into a set of common functions
* Removed hardcoded limits of 6 cards per mesh
#fyi Daniel.Wright, Patrick.Kelly, Yuriy.ODonnell
[CL 15144947 by Krzysztof Narkowicz in ue5-main branch]
