- Adding support for bindless resources/samplers. The loose resources have to be wrapped in a macro that generates an index and proxy resource when bindless is enabled. Reflection has to parse these differently from other resources since they're parsed as uint parameters. The runtime also has to bind these differently since they end up needing to find their real resource in the binding data and then update a constant buffer.
- To assist in conversions, the shader compiler will detect if a shader is compiled with both bindless and non-bindless resources/samplers and will emit errors if that is the case.
- Adding support for bindless Uniform Buffer resources/samplers. Because Uniform Buffers aren't per-shader, they'll always update their constants with the bindless indices of their resources.
- Adding more flags to FShaderCodePackedResourceCounts required changing all the array initializations to individual parameters since not all the new flags are used everywhere.
- No shaders have been configured to support bindless resources/samplers. Yet.
#jira UE-139616
#rb zach.bethel, arciel.rekman
#preflight 6282b8ec44349a6581a21a39
[CL 20250348 by christopher waters in ue5-main branch]
Requrements:
iOS: A8+
Android VK: more than 4 color attachements, more than 4 input attachments
Android GL: Unsuported - PLS seem to be limited to 128bits on most devices
#rb wei.liu
#preflight 625f866b9c09ef439db7612b
[CL 19861367 by Dmitriy Dyomin in ue5-main branch]
Local light shadows are supported on mobile forward and deferred, need to enable full depth prepass to generate the ShadowMaskTexture.
Remove the 4 maximum local lights limitation on mobile forward.
Remove the "High Quality Reflection" on mobile forward.
Disable simple lights on mobile forward.
#jira UE-149064
#rb Dmitriy.Dyomin
#preflight 625d17da772cf82d3a6059a6
[CL 19784597 by Wei Liu in ue5-main branch]
- partial checkin to continue on another stream.
- Write to the end of the strata texture array is working.
#rb none
#preflight none
#fyi charles.derousiers
[CL 19752138 by Sebastien Hillaire in ue5-main branch]
Storing water in gbuffer and runnign extra lighting pass would be too expenssiv. So instead, when in deferred, single layer water always output the main dir light luminance into a separate 111110 texture.
DF shadow is applied on that texture. DFShadow culling step is cached the first time for a given view in order to be able to reapply DFShadow later with a depth buffer containing water. This save 0.4ms on a base console.
DFShadow is naturaly skipped if the directional light does not have that feature enabled.
When DFShadow is executed, it is basically 0.24ms extra on a base console @ 1080p.
The separated light buffer is an extra 8MB allocated when in deferred.
This only works with deferred for now (forward does not run the reflection/composite pass).
Render target slot assignement is a bit fuzzy but this is a mostly static setup so should be fine. And could change with Strata down the line.
r.Water.SingleLayer.ShaderSupportDistanceFieldShadow is to enabled dfshadow on water for the shaders. Defaults to 1 and will only be enalbed when using deferred and when distance fields are enabled.
r.Water.SingleLayer.DistanceFieldShadow is a runtime toggle of the feature (if enabled the shaders still output to the separate light render target, but that is simply discarded).
Follow up: tile upsample, tile traceshadow, make it work with strata.
Tested shooter and console.
#rb Tiago.Costa, Kevin.Ortegren
#preflight https://horde.devtools.epicgames.com/job/62457ad79f404234145cd424
[CL 19613312 by Sebastien Hillaire in ue5-main branch]
- 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]
