wehub-resource-sync
69 lines
1.5 KiB
HLSL
69 lines
1.5 KiB
HLSL
#include "shared/point-light.hlsl"
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Texture2D<float> DepthTexture : register(t0);
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RWTexture2D<float> OutputTexture : register(u0);
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cbuffer ParamConstants : register(b0)
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{
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float Near;
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float Far;
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}
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cbuffer PointLights : register(b1)
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{
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PointLight Lights[8];
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int ActiveLightCount;
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}
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cbuffer Transforms : register(b2)
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{
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float4x4 CameraToClipSpace;
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float4x4 ClipSpaceToCamera;
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float4x4 WorldToCamera;
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float4x4 CameraToWorld;
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float4x4 WorldToClipSpace;
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float4x4 ClipSpaceToWorld;
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float4x4 ObjectToWorld;
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float4x4 WorldToObject;
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float4x4 ObjectToCamera;
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float4x4 ObjectToClipSpace;
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};
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sampler texSampler : register(s0);
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[numthreads(8,1,1)]
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void main(uint3 i : SV_DispatchThreadID)
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{
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uint lightIndex = i.x;
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if(lightIndex >= ActiveLightCount)
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return;
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float4 posInWorld = float4( Lights[lightIndex].position, 1);
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float4 posInClipSpace= mul(posInWorld, WorldToClipSpace);
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posInClipSpace.xyz /= posInClipSpace.w;
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float2 uv = (posInClipSpace ) /2 + 0.5;
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uv.y = 1 - uv.y;
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float depth = DepthTexture.SampleLevel(texSampler, uv, 0);
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float result = depth;
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float n = Near;
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float f = Far;
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float z =(-f * n) / (depth * (f - n) - f);
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float4 posInCam = mul( posInWorld, WorldToCamera);
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result = z + posInCam.z;
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if(
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uv.x < 0 || uv.x > 1 ||
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uv.y < 0 || uv.y > 1 ||
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posInCam.z > 0
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)
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result =0;
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OutputTexture[i.xy] = result;
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}
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