- separate SSS, opaque rough refraction and scene color output when strata project setting is enabled.
- simple placeholder per pixel variance from roughness/layers computation
- SSS only reads from subsurface buffer when ORR is enabled
- Added simple combine pass to final scene lighting (no blur for now)
- Started adding tiling but reached UAV count limit. I will refactor code later to workaround that.
- Updated light rendering, reflection environment pixel shader. Next will be lumen and clustered deferred shading.
#preflight https://horde.devtools.epicgames.com/job/622fc09fe348fe2ada4214f8
#rb none
#fyi charles.derousiers, tiantian.xie
[CL 19382940 by Sebastien Hillaire in ue5-main branch]
- Provides about 8% runtime memory savings (in local tests).
- Also, adds more compression types for shaders.
- Impact on the shader compilation (in SCWs) seems to be negligible in local tests.
#rb Devin.Doucette, Charles.Bloom
[REVIEW] [at]Devin.Doucette, [at]Charles.Bloom, [at]Jason.Nadro
#jira UE-136845
#ROBOMERGE-AUTHOR: arciel.rekman
#ROBOMERGE-SOURCE: CL 18502862 via CL 18503105 via CL 18503112 via CL 18505939 via CL 18505950
#ROBOMERGE-BOT: STARSHIP (Release-Engine-Staging -> Release-Engine-Test) (v899-18417669)
[CL 18505961 by arciel rekman in ue5-release-engine-test branch]
- Some projects put rendering CVars in other sections than RendererSettings.
#jira UE-135567
[at]Josh.Adams, [at]Dmitriy.Dyomin
#rb Josh.Adams, Dmitriy.Dyomin
#ROBOMERGE-AUTHOR: arciel.rekman
#ROBOMERGE-SOURCE: CL 18270117 in //UE5/Release-5.0/... via CL 18270123
#ROBOMERGE-BOT: STARSHIP (Release-Engine-Staging -> Release-Engine-Test) (v895-18170469)
[CL 18270137 by arciel rekman in ue5-release-engine-test branch]
This represents UE4/Main @18073326, Release-5.0 @18081140 and Dev-PerfTest @18045971
[CL 18081471 by aurel cordonnier in ue5-release-engine-test branch]
- Bindless rendering is not enabled anywhere yet.
- Adding bSupportsBindless to DDSPI.
- Moving ED3D12DescriptorHeapType into RHI and renaming to ERHIDescriptorHeapType.
- Adding FRHIDescriptorHandle for public usage of bindless indices.
- Adding GetBindlessHandle() to RHI SamplerState, SRV, UAV.
- Adding GetDefaultShaderResourceView() to RHI Textures.
- Adding bindless Sampler heap support to D3D12.
- Cleaned up some common shader code in prep for future bindless work.
#jira none
#rb mihnea.balta
#preflight 6169f8fafeab330001591bd0
#ROBOMERGE-AUTHOR: christopher.waters
#ROBOMERGE-SOURCE: CL 17846249 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v883-17842818)
[CL 17846289 by christopher waters 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]
Basic approach is to add HLSL types FLWCScalar, FLWCMatrix, FLWCVector, etc. Inside shaders, absolute world space position values should be represented as FLWCVector3. Matrices that transform *into* absolute world space become FLWCMatrix. Matrices that transform *from* world space become FLWCInverseMatrix. Generally LWC values work by extending the regular 'float' value with an additional tile coordinate. Final tile size will be a trade-off between scale/accuracy; I'm using 256k for now, but may need to be adjusted. Value represented by a FLWCVector thus becomes V.Tile * TileSize + V.Offset. Most operations can be performed directly on LWC values. There are HLSL functions like LWCAdd, LWCSub, LWCMultiply, LWCDivide (operator overloading would be really nice here). The goal is to stay with LWC values for as long as needed, then convert to regular float values when possible. One thing that comes up a lot is working in translated (rather than absolute) world space. WorldSpace + View.PrevPreViewTranslation = TranslatedWorldspace. Except 'View.PrevPreViewTranslation' is now a FLWCVector3, and WorldSpace quantities should be as well. So that becomes LWCAdd(WorldSpace, View.PrevPreViewTranslation) = TranslatedWorldspace. Assuming that we're talking about a position that's "reasonably close" to the camera, it should be safe to convert the translated WS value to float. The 'tile' coordinate of the 2 LWC values should cancel out when added together in this case. I've done some work throughout the shader code to do this. Materials are fully supporting LWC-values as well. Projective texturing and vertex animation materials that I've tested work correctly even when positioned "far away" from the origin.
Lots of work remains to fully convert all of our shader code. There's a function LWCHackToFloat(), which is a simple wrapper for LWCToFloat(). The idea of HackToFloat is to mark places that need further attention, where I'm simply converting absolute WS positions to float, to get shaders to compile. Shaders converted in this way should continue to work for all existing content (without LWC-scale values), but they will break if positions get too large.
General overview of changed files:
LargeWorldCoordinates.ush - This defines the FLWC types and operations
GPUScene.cpp, SceneData.ush - Primitives add an extra 'float3' tile coordinate. Instance data is unchanged, so instances need to stay within single-precision range of the primitive origin. Could potentially split instances behind the scenes (I think) if we don't want this limitation
HLSLMaterialDerivativeAutogen.cpp, HLSLMaterialTranslator.cpp, Preshader.cpp - Translated materials to use LWC values
SceneView.cpp, SceneRelativeViewMatrices.cpp, ShaderCompiler.cpp, InstancedStereo.ush - View uniform buffer includes LWC values where appropriate
#jira UE-117101
#rb arne.schober, Michael.Galetzka
#ROBOMERGE-AUTHOR: ben.ingram
#ROBOMERGE-SOURCE: CL 17787435 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v881-17767770)
[CL 17787478 by ben ingram in ue5-release-engine-test branch]
This should be useful if we want to vary the feedback trade offs for different modes.
Did some comparisons of shader ISA and ALU cost is unchanged.
#jira none
#ushell-cherrypick of 17483512 by Jeremy.Moore
#ROBOMERGE-AUTHOR: jeremy.moore
#ROBOMERGE-SOURCE: CL 17491509 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v870-17433530)
[CL 17491521 by jeremy moore in ue5-release-engine-test branch]
- Splitting symbol generation and shader "debug info" generation into two different cvars. This should now allow us to generate symbols post-packaging without generating different shader variants. This should also enable us to always generate symbols and still have the final deduplicated shader sizes.
- r.Shaders.Symbols is now the primary way to enable shader symbols for debugging.
- r.Shaders.GenerateSymbols can be enabled to always generate symbols without writing them to disk.
- r.Shaders.WriteSymbols can be used to force write symbols if they were previously generated.
- r.Shaders.ExtraData can be used to generate shader names for engine runtime systems to use.
- NotifyShaderCooked replaced with NotifyShaderCompiled, prep for upcoming non-cook symbol writing.
- PC DXC shader compiles should only generate debug info when requested, not all the time.
- PC FXC shader compiles should generate debug info when requested, not just when r.Shaders.Optimize is 0.
#jira none
#rb arciel.rekman, lukas.hermanns
#preflight 611ad9035e737200015992db
#ROBOMERGE-SOURCE: CL 17186155 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v855-17104924)
[CL 17186162 by christopher waters in ue5-release-engine-test branch]
* Use a shader code hash instead of sorting by shader pointer in CalculateBasePassMeshStaticSortKey()
* Added a serial number to UPrimitiveComponent, which is generated in OnRegister() and then used in FPrimitiveArraySortKey as an extra sort key.
Contributed by andrewtop-cruise.
#github 7934
#github 8273
#preflight 61128303afd67e0001e7a14b
#rb Arciel.Rekman
#ROBOMERGE-SOURCE: CL 17150851 in //UE5/Main/...
#ROBOMERGE-BOT: STARSHIP (Main -> Release-Engine-Test) (v855-17104924)
[CL 17150861 by yuriy odonnell in ue5-release-engine-test branch]
