236 lines
8.3 KiB
Plaintext
236 lines
8.3 KiB
Plaintext
Shader "Hidden/HDRP/DebugLightCluster"
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{
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SubShader
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{
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Tags { "Queue"="Transparent+0" "IgnoreProjector"="True" "RenderType"="Transparent" }
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HLSLINCLUDE
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#pragma only_renderers d3d11 ps5
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static const float3 cubeVertices[24] =
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{
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// Bottom Face
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float3(0.0, 0.0, 0.0),
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float3(0.0, 1.0, 0.0),
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float3(1.0, 1.0, 0.0),
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float3(1.0, 0.0, 0.0),
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// Left Face
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float3(0.0, 0.0, 0.0),
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float3(1.0, 0.0, 0.0),
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float3(1.0, 0.0, 1.0),
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float3(0.0, 0.0, 1.0),
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// Front Face
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float3(1.0, 0.0, 0.0),
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float3(1.0, 1.0, 0.0),
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float3(1.0, 1.0, 1.0),
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float3(1.0, 0.0, 1.0),
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// Right Face
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float3(0.0, 1.0, 0.0),
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float3(0.0, 1.0, 1.0),
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float3(1.0, 1.0, 1.0),
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float3(1.0, 1.0, 0.0),
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// Back Face
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float3(0.0, 0.0, 0.0),
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float3(0.0, 0.0, 1.0),
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float3(0.0, 1.0, 1.0),
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float3(0.0, 1.0, 0.0),
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// Top Face
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float3(0.0, 0.0, 1.0),
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float3(1.0, 0.0, 1.0),
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float3(1.0, 1.0, 1.0),
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float3(0.0, 1.0, 1.0)
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};
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static const int cubeLines[48] =
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{
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// Bottom Face
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0, 1, 1, 2, 2, 3, 3, 0,
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// Left Face
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4, 5, 5, 6, 6, 7, 7, 4,
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// Front Face
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8, 9, 9, 10, 10, 11, 11, 8,
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// Right Face
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12, 13, 13, 14, 14, 15, 15, 12,
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// Back Face
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16, 17, 17, 18, 18, 19, 19, 16,
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// Top Face
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20, 21, 21, 22, 22, 23, 23, 20
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};
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static const int cubeTriangles[36] =
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{
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// Bottom Face
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0, 1, 2, 2, 3, 0,
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// Left Face
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4, 5, 6, 4, 6, 7,
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// Front Face
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8, 9, 10, 8, 10, 11,
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// Right Face
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12, 13, 14, 12, 14, 15,
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// Back Face
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16, 17, 18, 16, 18, 19,
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// Top Face
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20, 21, 22, 20, 22, 23
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};
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ENDHLSL
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Pass
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{
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Cull Back
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ZWrite Off
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Blend One One
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HLSLPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Common.hlsl"
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#include "Packages/com.unity.render-pipelines.high-definition/Runtime/ShaderLibrary/ShaderVariables.hlsl"
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#include "Packages/com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/Raytracing/Shaders/ShaderVariablesRaytracingLightLoop.hlsl"
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#include "Packages/com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/Raytracing/Shaders/RayTracingLightCluster.hlsl"
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struct AttributesDefault
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{
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UNITY_VERTEX_INPUT_INSTANCE_ID
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};
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struct VaryingsDefault
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{
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float4 positionCS : SV_POSITION;
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float4 cellColor : TEXCOORD0;
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UNITY_VERTEX_OUTPUT_STEREO
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};
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VaryingsDefault vert(AttributesDefault att, uint vertID : SV_VertexID, uint instanceID: SV_InstanceID)
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{
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VaryingsDefault output;
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UNITY_SETUP_INSTANCE_ID(att);
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UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(output);
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// Compute the csize of each cell
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float3 clusterCellSize = (_MaxClusterPos - _MinClusterPos) * float3(1.0 / 64.0, 1.0 / 64.0, 1.0 / 32.0);
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// Compute the camera relative position
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float3 positionOS = cubeVertices[cubeTriangles[vertID % 48]];
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positionOS *= clusterCellSize;
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float3 positionRWS = TransformObjectToWorld(positionOS);
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// Compute the grid coordinates of this cell
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int width = instanceID % 64;
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int height = (instanceID / 64) % 64;
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int depth = instanceID / 4096;
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// Compute the world space coordinate of this cell
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positionRWS = _MinClusterPos + float3( clusterCellSize.x * width, clusterCellSize.y * height, clusterCellSize.z * depth) + GetAbsolutePositionWS(positionRWS);
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// Given that we have the cell index, get the number of lights
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uint numLights = GetTotalLightClusterCellCount(depth + height * 32 + width * 2048);
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output.cellColor.xyz = lerp(float3(0.0, 0.0, 0.0), float3(1.0, 1.0, 0.0), clamp((float) numLights / _LightPerCellCount, 0.0, 1.0));
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output.cellColor.w = numLights == 0 ? 0.0 : 1.0;
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output.cellColor.xyz = numLights >= _LightPerCellCount ? float3(5.0, 0.0, 0.0) : output.cellColor.xyz;
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// Compute the clip space position
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output.positionCS = TransformWorldToHClip(positionRWS);
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return output;
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}
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void frag(VaryingsDefault varying, out float4 outCellColor : SV_Target0)
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{
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UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(varying);
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outCellColor = float4(varying.cellColor.xyz * varying.cellColor.w / 50, 1.0);
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}
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ENDHLSL
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}
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Pass
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{
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Cull Back
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ZWrite Off
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Blend One One
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HLSLPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Common.hlsl"
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#include "Packages/com.unity.render-pipelines.high-definition/Runtime/ShaderLibrary/ShaderVariables.hlsl"
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#include "Packages/com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/Raytracing/Shaders/ShaderVariablesRaytracingLightLoop.hlsl"
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#include "Packages/com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/Raytracing/Shaders/RayTracingLightCluster.hlsl"
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struct AttributesDefault
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{
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UNITY_VERTEX_INPUT_INSTANCE_ID
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};
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struct VaryingsDefault
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{
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float4 positionCS : SV_POSITION;
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float4 cellColor : TEXCOORD0;
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UNITY_VERTEX_OUTPUT_STEREO
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};
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VaryingsDefault vert(AttributesDefault att, uint vertID : SV_VertexID, uint instanceID: SV_InstanceID)
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{
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VaryingsDefault output;
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UNITY_SETUP_INSTANCE_ID(att);
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UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(output);
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// Compute the csize of each cell
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float3 clusterCellSize = (_MaxClusterPos - _MinClusterPos) * float3(1.0 / 64.0, 1.0 / 64.0, 1.0 / 32.0);
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// Compute the camera relative position
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float3 positionOS = cubeVertices[cubeLines[vertID % 48]];
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positionOS *= clusterCellSize;
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float3 positionRWS = TransformObjectToWorld(positionOS);
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// Compute the grid coordinates of this cell
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int width = instanceID % 64;
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int height = (instanceID / 64) % 64;
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int depth = instanceID / 4096;
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// Compute the world space coordinate of this cell
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positionRWS = _MinClusterPos + float3( clusterCellSize.x * width, clusterCellSize.y * height, clusterCellSize.z * depth) + GetAbsolutePositionWS(positionRWS);
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// Given that we have the cell index, get the number of lights
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uint numLights = GetTotalLightClusterCellCount(depth + height * 32 + width * 2048);
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output.cellColor.xyz = lerp(float3(0.0, 1.0, 0.0), float3(1.0, 1.0, 0.0), clamp((float) numLights / _LightPerCellCount, 0.0, 1.0));
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output.cellColor.w = numLights == 0 ? 0.0 : 1.0;
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output.cellColor.xyz = numLights >= _LightPerCellCount ? float3(1.0, 0.0, 0.0) : output.cellColor.xyz;
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// Compute the clip space position
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output.positionCS = TransformWorldToHClip(positionRWS);
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return output;
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}
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void frag(VaryingsDefault varying, out float4 outCellColor : SV_Target0)
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{
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UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(varying);
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outCellColor = float4(varying.cellColor.xyz * varying.cellColor.w / 50 , 1.0);
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}
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ENDHLSL
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}
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}
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Fallback Off
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}
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