While the mobile team wants to keep independent samples disbaled for PCD3D_ES3_1, it makes sense to move this as a platform dependent feature into the DDSPI configuration.
#rb brian.white, christopher.waters, Yuriy.ODonnell
[FYI] Dmitriy.Dyomin, Carl.Lloyd
#rnx
[CL 31764896 by laura hermanns in ue5-main branch]
- Adding EShaderCodeFeatures::Barycentrics
- Adding GRHIGlobals.SupportsBarycentricsSemantic
- Adding FDataDrivenShaderPlatformInfo::GetSupportsBarycentricsIntrinsics to control COMPILER_SUPPORTS_BARYCENTRIC_INTRINSICS
- Adding FDataDrivenShaderPlatformInfo::GetSupportsBarycentricsSemantic to control PLATFORM_SUPPORTS_BARYCENTRICS_SEMANTIC
#jira UE-193429
#rb graham.wihlidal, mihnea.balta
[CL 29771745 by christopher waters in ue5-main branch]
OpenGL ES and Metal use framebuffer fetch.
Vulkan uses dual source blending.
For Vulkan and OpenGL ES there is a fallback shader permutation for drivers that don't support this. The fallback is the same as the existing solution that uses regular blending (i.e. looks different).
Others uses dual source blending and we force use of DXC for those shaders.
#rb Dmitriy.Dyomin, Florin.Pascu
[CL 29245271 by florian penzkofer in ue5-main branch]
This functionality is now well covered by Lumen reflections which are the supported path going forward.
#jira UE-198247
#rb Aleksander.Netzel,Yuriy.ODonnell
[CL 28866153 by chris kulla in ue5-main branch]
- Added support for up to 32 samplers to the D3D12 RHI.
- Added 'MaxSamplers' to ShaderPlatform in DataDrivenPlatformInfo, this is defaulted to 16 for all shader platforms and can be modified the the DDPI ini files. This value will set the shader compiler define 'PLATFORM_MAX_SAMPLERS'.
- Added a 'RequiredSamplersSwitch' material editor node to branch based on a given shader platform's maximum sampler count.
- To support more than 16 samplers on feature level SM5 platforms Dxc and sm6.0 are used to compile the shader. On platforms that don't support Dxc and sm6.0 the preivew menu item will be disabled.
#jira UE-191404
#rb florin.pascu
[CL 27850133 by michael wanderson in ue5-main branch]
Platforms that do support uniform buffer objects can now provide batched primitive data through UBO. There is a limit UBO range that can be accessed in shaders, so we group instances into batches that fit into this limit. Switch uses 64KB views, other platfroms16KB views. For each primitive we allocate 512Bytes and 256Bytes for instance. Mobile platforms that do not support UBO will use a desktop version of GPUScene.
There are a few things that still missing: Dynamic mesh passes, static lighting
#rb ola.olsson, benjamin.rouveyrol
[CL 26354848 by marc audy in ue5-main branch]
* This should be used to guard any features that require explicitly accessing buffer or textures SRVs in vertex shaders
#rb Dmitriy.Dyomin
#rb Kenzo.Terelst
[CL 26207274 by yuriy odonnell in ue5-main branch]
r.ShaderPipelines
r.Material.ExcludeNonPipelinedShaders
Both cvars are currently disable on WindowsEngine.ini which make them also disable when we cook for consoles. ExcludeNonPipelinedShaderTypes is currently used only at cooking time when we compile shaders which is currently returning false, since the value is disabled on windows. Making those cvars use FShaderPlatformCachedIniValue, will allow to have specific platform value when cooking for a specific target. Moving r.Material.ExcludeNonPipelinedShaders to the defaultengine.ini file to keep it disable for the moment and not affecting shader key string. Will enable it progressively on console later.
r.Shaders.RemoveUnusedInterpolators
Make that cvar platform agnostic, since it will be used in on other consoles eventually. Platforms supporting the stripping of unused interpolators will check the same flag (CFLAG_ForceRemoveUnusedInterpolators) to enable it. Since windows can run opengl, and stripping is not supported on that shader platform, add extra logic to exclude the flag.
-Make the RHISupportsShaderPipelines function access a real DDPI attribute and not just test if we are not on mobile. Will need this to be able to have stripping unused shader interpolators on Switch.
[REVIEW] Laura.Hermanns
[CL 26018371 by serge bernier in ue5-main branch]
What:
* Add data support flag for NNE shaders so platforms can opt in to the NNERuntimeHlsl shaders compilation.
Tests:
* NNE smoke test + style transfer demo on: win64 editor, win64 packaged
#rb ue-nni
#rnx
#jira UE-184154
#preflight 6447d1e7c632d1e89bc818f6
[CL 25185875 by florent guinier in ue5-main branch]
- Disable Nanite mesh shader rasterization when r.AllowGlobalClipPlane=1 if the platform cannot support outputting the global clip plane clip distance from a mesh shader.
#rb rune.stubbe
#rnx
#preflight 63c95a34b0652247502cec7d
[CL 23773278 by jamie hayes in ue5-main branch]
It's disabled on Android because some android devices don't support dual src blending, and it's disabled on IOS because it doesn't work with MRT.
#rb Dmitriy.Dyomin, Florin.Pascu
#preflight 6391f2e7c415e8dc78348c60
[CL 23448042 by wei liu in ue5-main branch]
- Implemented for D3D11 and D3D12, as Mobile Multi View (MMV) fallback on both.
High level summary / notable changes:
- preview shader platforms will get the necessary properties from the desktop shader platforms used to display them
- stereo render target manager will get informed which shader platform the engine is currently using
- regularized somewhat what happens when the editor's preview platform changes (enabling/disabling and activating/deactivating). (Preview system is confusing because it's tri-state: preview platform can be set but not active, which is the same as it not being set). More code can be de-duplicated there.
- Multiview will be considered disabled (for scene textures at least) if, despite ViewFamily requiring it, no View actually has it enabled.
- Patched a bunch of shaders to account for texture array RTs used for MMV (and MMV fallback).
#rb Yuriy.ODonnell
#jira UE-168931
#review
#preflight 638a41d3976b1644cb68d21a
[CL 23377965 by Arciel Rekman in ue5-main branch]
ComputeFramework: Disable on Vulkan platforms using DataDrivenPlatfomInfo
Do this until we fix user defined structures that don't obey Vulkan packing rules.
Avoids crashes on some drivers.
#preflight 6358533ea2609c2fae8b4d10
[CL 22798993 by jeremy moore in ue5-main branch]
- Assume support during the cook, do the actual check in runtime and exit if not supported.
- This slightly increases the minspec for PC projects that ship ISR to D3D 11.3 (2014-2015 level hardware).
#rb Jules.Blok, Robert.Srinivasiah
#review @Jules.Blok, @Robert.Srinivasiah
#jira UE-162244
#preflight 632b4d6cb4515b7e2272620d
[CL 22207954 by Arciel Rekman in ue5-main branch]
