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621c270187
#jira UE-202287 #rb Dmitriy.Dyomin, Josie.Yang [FYI] Guillaume.Abadie [CL 31465083 by pr0-zac in ue5-main branch]
89 lines
3.5 KiB
Plaintext
89 lines
3.5 KiB
Plaintext
// Copyright Epic Games, Inc. All Rights Reserved..
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/*=============================================================================
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InstancedStereo.usf: Resolve which view uniforms in a stereo pair to use.
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=============================================================================*/
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#pragma once
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// Explictly include view uniform buffers
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#include "/Engine/Generated/UniformBuffers/View.ush"
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#include "/Engine/Generated/UniformBuffers/InstancedView.ush"
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// ViewState, GetPrimaryView and GetInstancedView are generated by the shader compiler to ensure View uniform buffer changes are up to date.
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// see GenerateInstancedStereoCode()
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#include "/Engine/Generated/GeneratedInstancedStereo.ush"
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void FinalizeViewState(inout ViewState InOutView)
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{
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InOutView.WorldToClip = MakeDFInverseMatrix(InOutView.ViewOriginHigh, InOutView.RelativeWorldToClip);
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InOutView.ClipToWorld = MakeDFMatrix(InOutView.ViewOriginHigh, InOutView.ClipToRelativeWorld);
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InOutView.ScreenToWorld = MakeDFMatrix(InOutView.ViewOriginHigh, InOutView.ScreenToRelativeWorld);
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InOutView.PrevClipToWorld = MakeDFMatrix(InOutView.ViewOriginHigh, InOutView.PrevClipToRelativeWorld);
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InOutView.WorldCameraOrigin = MakeDFVector3(InOutView.ViewOriginHigh, InOutView.ViewOriginLow);
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InOutView.WorldViewOrigin = MakeDFVector3(InOutView.WorldViewOriginHigh, InOutView.WorldViewOriginLow);
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InOutView.PrevWorldCameraOrigin = MakeDFVector3(InOutView.PrevWorldCameraOriginHigh, InOutView.PrevWorldCameraOriginLow);
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InOutView.PrevWorldViewOrigin = MakeDFVector3(InOutView.PrevWorldViewOriginHigh, InOutView.PrevWorldViewOriginLow);
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InOutView.PreViewTranslation = MakeDFVector3(InOutView.PreViewTranslationHigh, InOutView.PreViewTranslationLow);
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InOutView.PrevPreViewTranslation = MakeDFVector3(InOutView.PrevPreViewTranslationHigh, InOutView.PrevPreViewTranslationLow);
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#if VIEW_HAS_TILEOFFSET_DATA
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InOutView.TileOffset.WorldCameraOrigin = MakeLWCVector3(InOutView.ViewTilePosition, InOutView.RelativeWorldCameraOriginTO);
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InOutView.TileOffset.WorldViewOrigin = MakeLWCVector3(InOutView.ViewTilePosition, InOutView.RelativeWorldViewOriginTO);
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InOutView.TileOffset.PrevWorldCameraOrigin = MakeLWCVector3(InOutView.ViewTilePosition, InOutView.PrevRelativeWorldCameraOriginTO);
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InOutView.TileOffset.PrevWorldViewOrigin = MakeLWCVector3(InOutView.ViewTilePosition, InOutView.PrevRelativeWorldViewOriginTO);
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InOutView.TileOffset.PreViewTranslation = MakeLWCVector3(-InOutView.ViewTilePosition, InOutView.RelativePreViewTranslationTO);
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InOutView.TileOffset.PrevPreViewTranslation = MakeLWCVector3(-InOutView.ViewTilePosition, InOutView.RelativePrevPreViewTranslationTO);
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#endif
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}
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#define PrimaryView GetPrimaryView()
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static ViewState ResolvedView = (ViewState)0.0f;
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ViewState ResolveView()
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{
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return GetPrimaryView();
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}
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#if (INSTANCED_STEREO || MOBILE_MULTI_VIEW)
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ViewState ResolveView(uint ViewIndex)
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{
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return GetInstancedView(ViewIndex);
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}
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#endif
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#if INSTANCED_STEREO
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static const float EyeOffsetScale[2] = { -1.0, 1.0 };
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static const float4 EyeClipEdge[2] = { float4(-1.0, 0.0, 0.0, 1.0), float4(1.0, 0.0, 0.0, 1.0) };
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#endif
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bool IsInstancedStereo()
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{
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#if INSTANCED_STEREO
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return (uint)InstancedView.StereoPassIndex[1] > 0;
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#else
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return false;
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#endif
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}
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uint GetEyeIndex(uint InstanceId)
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{
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#if INSTANCED_STEREO
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return IsInstancedStereo() ? InstanceId & 1 : 0;
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#else
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return 0;
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#endif
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}
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uint GetInstanceId(uint InstanceId)
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{
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#if INSTANCED_STEREO
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return IsInstancedStereo() ? InstanceId / 2 : InstanceId;
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#else
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return InstanceId;
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#endif
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}
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#define USE_MULTI_VIEW_ID_SV (MOBILE_MULTI_VIEW && (COMPILER_VULKAN && !INSTANCED_STEREO)) |