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85 lines
3.1 KiB
85 lines
3.1 KiB
#include "Packages/com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/Raytracing/Shaders/RaytracingFragInputs.hlsl"
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// Generic function that handles the reflection code
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[shader("closesthit")]
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void ClosestHitGBuffer(inout RayIntersectionGBuffer rayIntersectionGbuffer : SV_RayPayload, AttributeData attributeData : SV_IntersectionAttributes)
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{
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UNITY_XR_ASSIGN_VIEW_INDEX(DispatchRaysIndex().z);
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IntersectionVertex currentVertex;
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FragInputs fragInput;
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GetCurrentVertexAndBuildFragInputs(attributeData, currentVertex, fragInput);
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// Evaluate the incident direction
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const float3 incidentDir = WorldRayDirection();
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PositionInputs posInput;
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posInput.positionWS = fragInput.positionRWS;
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posInput.positionSS = uint2(0, 0);
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// Build the surfacedata and builtindata
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SurfaceData surfaceData;
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BuiltinData builtinData;
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bool isVisible;
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RayCone cone;
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cone.width = 0.0;
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cone.spreadAngle = 0.0;
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GetSurfaceAndBuiltinData(fragInput, -incidentDir, posInput, surfaceData, builtinData, currentVertex, cone, isVisible);
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// Compute the bsdf data
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BSDFData bsdfData = ConvertSurfaceDataToBSDFData(posInput.positionSS, surfaceData);
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// First we pack the data into the standard bsdf data
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StandardBSDFData standardLitData;
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ZERO_INITIALIZE(StandardBSDFData, standardLitData);
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FitToStandardLit(bsdfData, builtinData, posInput.positionSS, standardLitData);
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#ifdef MINIMAL_GBUFFER
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// Override all the parameters that we do not require for our minimal lit version
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standardLitData.specularOcclusion = 1.0;
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standardLitData.normalWS = fragInput.tangentToWorld[2];
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standardLitData.coatMask = 0.0;
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#endif
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// Then export it to the gbuffer
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EncodeIntoStandardGBuffer(standardLitData, rayIntersectionGbuffer.gbuffer0, rayIntersectionGbuffer.gbuffer1, rayIntersectionGbuffer.gbuffer2, rayIntersectionGbuffer.gbuffer3);
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rayIntersectionGbuffer.t = standardLitData.isUnlit != 0 ? -RayTCurrent() : RayTCurrent();
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}
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// Generic function that handles the reflection code
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[shader("anyhit")]
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void AnyHitGBuffer(inout RayIntersectionGBuffer rayIntersectionGbuffer : SV_RayPayload, AttributeData attributeData : SV_IntersectionAttributes)
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{
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#ifdef _SURFACE_TYPE_TRANSPARENT
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IgnoreHit();
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#else
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UNITY_XR_ASSIGN_VIEW_INDEX(DispatchRaysIndex().z);
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IntersectionVertex currentVertex;
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FragInputs fragInput;
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GetCurrentVertexAndBuildFragInputs(attributeData, currentVertex, fragInput);
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// Evaluate the incident direction
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const float3 incidentDir = WorldRayDirection();
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PositionInputs posInput;
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posInput.positionWS = fragInput.positionRWS;
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posInput.positionSS = uint2(0, 0);
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// Build the surfacedata and builtindata
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SurfaceData surfaceData;
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BuiltinData builtinData;
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bool isVisible;
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RayCone cone;
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cone.width = 0.0;
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cone.spreadAngle = 0.0;
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GetSurfaceAndBuiltinData(fragInput, -incidentDir, posInput, surfaceData, builtinData, currentVertex, cone, isVisible);
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// If this fella should be culled, then we cull it
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if(!isVisible)
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{
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IgnoreHit();
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}
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#endif
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}
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