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Only collect HV primitives if the shadow is volumetric

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#rb Stu.McKenna

[CL 31390963 by patrick kelly in ue5-main branch]
This commit is contained in:
patrick kelly
2024-02-12 13:26:59 -05:00
parent ded707b98e
commit 3906f2f86c
2 changed files with 8 additions and 2 deletions
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3
Engine/Source/Runtime/Renderer/Private/ShadowRendering.h
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@@ -436,6 +436,9 @@ public:
/** Whether the the shadow overlaps any nanite primitives */
uint32 bContainsNaniteSubjects : 1;
uint32 bShouldRenderVSM : 1;
/** Whether this shadow should support casting shadows from volumetric surfaces. */
uint32 bVolumetricShadow : 1;
/** Used to fetch the correct cached static mesh draw commands */
EMeshPass::Type MeshPassTargetType = EMeshPass::CSMShadowDepth;

7
Engine/Source/Runtime/Renderer/Private/ShadowSetup.cpp
View File

@@ -750,6 +750,7 @@ FProjectedShadowInfo::FProjectedShadowInfo()
, bNaniteGeometry(true)
, bContainsNaniteSubjects(false)
, bShouldRenderVSM(true)
, bVolumetricShadow(false)
, PerObjectShadowFadeStart(UE_OLD_WORLD_MAX) // LWC_TODO: Upgrade to double? Should have been HALF_WORLD_MAX to match precision.
, InvPerObjectShadowFadeLength(0.0f)
, OverlappedUVOnCachedShadowMap(-1.0f, -1.0f, -1.0f, -1.0f)
@@ -803,6 +804,7 @@ bool FProjectedShadowInfo::SetupPerObjectProjection(
bSelfShadowOnly = InParentSceneInfo->Proxy->CastsSelfShadowOnly();
bTransmission = InLightSceneInfo->Proxy->Transmission();
bHairStrandsDeepShadow = InLightSceneInfo->Proxy->CastsHairStrandsDeepShadow();
bVolumetricShadow = InLightSceneInfo->Proxy->CastsVolumetricShadow();
check(!bRayTracedDistanceField);
@@ -940,6 +942,7 @@ void FProjectedShadowInfo::SetupWholeSceneProjection(
bWholeSceneShadow = true;
bTransmission = InLightSceneInfo->Proxy->Transmission();
bHairStrandsDeepShadow = InLightSceneInfo->Proxy->CastsHairStrandsDeepShadow();
bVolumetricShadow = InLightSceneInfo->Proxy->CastsVolumetricShadow();
BorderSize = InBorderSize;
// Scale matrix to also include the border
@@ -2051,7 +2054,7 @@ bool FProjectedShadowInfo::AddSubjectPrimitive(FDynamicShadowsTaskData& TaskData
bWasAdded = true;
}
if (bHeterogeneousVolumeRelevance)
if (bVolumetricShadow && bHeterogeneousVolumeRelevance)
{
SubjectHeterogeneousVolumePrimitives.Add(PrimitiveSceneInfo);
bWasAdded = true;
@@ -2263,7 +2266,7 @@ uint64 FProjectedShadowInfo::AddSubjectPrimitive_AnyThread(
++OutStats.NumTranslucentSubs;
}
if (bHeterogeneousVolumeRelevance)
if (bVolumetricShadow && bHeterogeneousVolumeRelevance)
{
Result.bHeterogeneousVolumeSubjectPrimitive = true;
++OutStats.NumHeterogeneousVolumeSubs;