84 lines
3.2 KiB
C++
84 lines
3.2 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "MaterialCache/MaterialCacheVirtualFinalizer.h"
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#include "MaterialCache/MaterialCacheRenderer.h"
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#include "Components/PrimitiveComponent.h"
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#include "Interfaces/ITargetPlatform.h"
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#include "RendererInterface.h"
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#include "RenderUtils.h"
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#include "ShaderPlatformCachedIniValue.h"
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#include "TextureResource.h"
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#include "VirtualTexturing.h"
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#include "MeshPassProcessor.inl"
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FMaterialCacheVirtualFinalizer::FMaterialCacheVirtualFinalizer(FScene* InScene, FPrimitiveComponentId InPrimitiveComponentId, const FMaterialCacheTagLayout& TagLayout, const FVTProducerDescription& InProducerDesc)
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: Scene(InScene)
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, PrimitiveComponentId(InPrimitiveComponentId)
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, TagLayout(TagLayout)
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, ProducerDesc(InProducerDesc)
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{
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SourceFormat = PF_B8G8R8A8;
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IntermediateFormat = PF_B8G8R8A8;
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DestFormat = ProducerDesc.LayerFormat[0];
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}
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void FMaterialCacheVirtualFinalizer::AddTile(const FMaterialCacheTileEntry& InEntry)
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{
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TilesToRender.Add(InEntry);
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}
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void FMaterialCacheVirtualFinalizer::RenderFinalize(FRDGBuilder& GraphBuilder, ISceneRenderer* SceneRenderingContext)
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{
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TArray<FMaterialCachePageEntry, SceneRenderingAllocator> Pages;
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// Fill all tiles
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for (const FMaterialCacheTileEntry& Tile : TilesToRender)
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{
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const float X = static_cast<float>(FMath::ReverseMortonCode2_64(Tile.Address));
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const float Y = static_cast<float>(FMath::ReverseMortonCode2_64(Tile.Address >> 1));
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const float DivisorX = static_cast<float>(ProducerDesc.BlockWidthInTiles) / (float)(1 << Tile.Level);
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const float DivisorY = static_cast<float>(ProducerDesc.BlockHeightInTiles) / (float)(1 << Tile.Level);
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// Virtual UV range
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const FVector2f UV(X / DivisorX, Y / DivisorY);
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const FVector2f UVSize(1.0f / DivisorX, 1.0f / DivisorY);
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const FVector2f UVBorder = UVSize * ((float)ProducerDesc.TileBorderSize / (float)ProducerDesc.TileSize);
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const FBox2f UVRect(UV - UVBorder, UV + UVSize + UVBorder);
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// Layers within the same space share the tile table, so just get the first one
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FIntVector PageLocation = Tile.TargetLayers[0].pPageLocation;
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// Physical tile location
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const int32 TileSize = ProducerDesc.TileSize + 2 * ProducerDesc.TileBorderSize;
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const FIntPoint DestinationPos(PageLocation.X * TileSize, PageLocation.Y * TileSize);
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const FIntRect DestRect(DestinationPos, DestinationPos + FIntPoint(TileSize, TileSize));
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FMaterialCachePageEntry& Entry = Pages.Emplace_GetRef();
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Entry.TileRect = DestRect;
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Entry.UVRect = UVRect;
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}
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FMaterialCacheSetup Setup;
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Setup.PrimitiveComponentId = PrimitiveComponentId;
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Setup.TileSize = ProducerDesc.TileSize + 2 * ProducerDesc.TileBorderSize;
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// All tiles share the same targets in a bucket
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for (int32 i = 0; i < TilesToRender[0].TargetLayers.Num(); i++)
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{
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Setup.PhysicalRenderTargets.Add(TilesToRender[0].TargetLayers[i].PooledRenderTarget);
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}
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MaterialCacheEnqueuePages(GraphBuilder, TagLayout, Setup, Pages);
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// Cleanup
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TilesToRender.Empty();
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}
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void FMaterialCacheVirtualFinalizer::Finalize(FRDGBuilder& GraphBuilder)
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{
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// TODO[MP]: Couple of things:
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// 1. Share the finalizer among all MCVT's
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// 2. Consider just having a RenderPages entry point, the enqueueing may be kind of moot at this point
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MaterialCacheRenderPages(GraphBuilder);
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}
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