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ce2d5721b7
This lets us get rid of the GPU static->dynamic pass that was non-trivially expensive on scenes with many instances, and is currently unnecessary. Behavior should be the same as before, just with the logic moved back to the CPU and per-primitive (which that part of it functionally still was). Swap invaliation dispatch back to single per group and go back to expanding on the CPU to avoid redundantly hitting cases that were already CPU culled to specific lights. More of these will be present with Ola's recent changes. #rb jamie.hayes [CL 30676139 by andrew lauritzen in ue5-main branch]
71 lines
2.6 KiB
C++
71 lines
2.6 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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/*================================================================================================
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VirtualShadowMapDefinitions.h: used in virtual shadow map shaders and C++ code to define common constants
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!!! Changing this file requires recompilation of the engine !!!
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=================================================================================================*/
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#pragma once
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#define VIRTUAL_SHADOW_MAP_VISUALIZE_NONE 0
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#define VIRTUAL_SHADOW_MAP_VISUALIZE_SHADOW_FACTOR (1 << 0)
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#define VIRTUAL_SHADOW_MAP_VISUALIZE_CLIPMAP_OR_MIP (1 << 1)
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#define VIRTUAL_SHADOW_MAP_VISUALIZE_VIRTUAL_PAGE (1 << 2)
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#define VIRTUAL_SHADOW_MAP_VISUALIZE_CACHED_PAGE (1 << 3)
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#define VIRTUAL_SHADOW_MAP_VISUALIZE_SMRT_RAY_COUNT (1 << 4)
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#define VIRTUAL_SHADOW_MAP_VISUALIZE_CLIPMAP_VIRTUAL_SPACE (1 << 5)
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#define VIRTUAL_SHADOW_MAP_VISUALIZE_GENERAL_DEBUG (1 << 6)
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#define VIRTUAL_SHADOW_MAP_VISUALIZE_DIRTY_PAGE (1 << 7)
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#define VIRTUAL_SHADOW_MAP_VISUALIZE_GPU_INVALIDATED_PAGE (1 << 8)
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#define VIRTUAL_SHADOW_MAP_VISUALIZE_MERGED_PAGE (1 << 9)
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#define VIRTUAL_SHADOW_MAP_VISUALIZE_NANITE_OVERDRAW (1 << 10)
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#define VSM_PROJ_FLAG_CURRENT_DISTANT_LIGHT (1U << 0)
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#define VSM_PROJ_FLAG_UNCACHED (1U << 1) // Used to indicate that the light is uncached and should only render to dynamic pages
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#define VSM_PROJ_FLAG_UNREFERENCED (1U << 2) // Used to indicate that the light is not referenced/rendered to this render
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// Hard limit for max distant lights supported 8k for now - we may revise later. We need to keep them in a fixed range for now to make allocation easy and minimize overhead for indexing.
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#define VSM_MAX_SINGLE_PAGE_SHADOW_MAPS (1024U * 8U)
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#define VSM_INVALIDATION_PAYLOAD_FLAG_NONE 0
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#define VSM_INVALIDATION_PAYLOAD_FLAG_FORCE_STATIC (1 << 0)
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// 8 bit flags, 24 bit VSM ID
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#define VSM_INVALIDATION_PAYLOAD_FLAG_BITS 8
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#ifdef __cplusplus
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#include "HLSLTypeAliases.h"
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namespace UE::HLSL
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{
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#endif
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struct FVSMVisibleInstanceCmd
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{
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uint PackedPageInfo;
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uint InstanceIdAndFlags;
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uint IndirectArgIndex;
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};
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struct FVSMCullingBatchInfo
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{
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uint FirstPrimaryView;
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uint NumPrimaryViews;
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uint PrimitiveRevealedOffset;
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uint PrimitiveRevealedNum;
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};
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struct FNextVirtualShadowMapData
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{
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int NextVirtualShadowMapId;
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int2 PageAddressOffset;
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int _Padding;
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};
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#ifdef __cplusplus
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} // namespace UE::HLSL
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using FVSMVisibleInstanceCmd = UE::HLSL::FVSMVisibleInstanceCmd;
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using FVSMCullingBatchInfo = UE::HLSL::FVSMCullingBatchInfo;
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using FNextVirtualShadowMapData = UE::HLSL::FNextVirtualShadowMapData;
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#endif |