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Add PSOPrecache file which wraps engine level PSO structs and functions - FPSOPrecacheParams used to wrap certain parameters which drive the PSO collection (mostly set from components) - IPSOCollector interface used as engine entry to the mesh pass processors in renderer project - FPSOCollectorCreateManager to wrap all statically registered IPSOCollector CreateFuncions - PSOCollectorStats structs and helper functions Add PSOPrecache support to PipelineStateCache: - functions to precache compute and graphics PSOs - functions to check current precache state - FPrecacheGraphicsPipelineCache which wraps all currently precached PSOs IMaterial entry function to PrecachePSOs with given vertex factories and params (implemented by UMaterial & UMaterialInstance) which forwards call to FMaterial and finally the FMaterialShaderMap - FMaterialShaderMap will iterate all registered IPSOCollector to collect all possible PSOs used and forward them to the PipelineStateCache for actual (async) precaching RHI Changes: - Add RHI specific functions to retrieve & compare the FRHIVertexDeclaration and FGraphicsPipelineStateInitializer hash for each RHI - Add helper functions to match RHI*State data by retrieving initializer Minimal vertex factory changes for PSO precaching as prep - actual changes in upcoming CLs MeshPassProcessor base functions to collect PSOs which can be used by all mesh pass processor implemention (actual changes in upcoming CLs) - Cache complete precache data hash of stored minimal PSO so it can be used for fast actual PSO initializer hash computation (full PSO initializer is build at runtime) - Cache if minimal PSO was successfully precache and option to skip draw when PSO is still precaching (disabled by default and doesn't work yet via GPU scene based rendering) - Add helper functions to setup the per mesh pass render target data used during PSO collection Refactor SceneTextureConfig so it can be initialized from an init struct and move all function to setup the internal members from SceneTexture to SceneTextureConfig using the data from the init struct (so it's available in Engine project) Fix GBufferInfo format for velocity target (was always floating point while it should be unorm when not android Make certain helper functions definitions to h file so they can be used everywhere (SupportsNaniteRendering, FTextureRenderTarget2DResource::GetFormat & CreateFlags) #preflight 63189a5a967ffc68fb9044a5 #jira UE-139584 #rb Mihnea.Balta [CL 21907508 by kenzo terelst in ue5-main branch]