From 1f4343d664dbd673e17311bafc34667b34c8da14 Mon Sep 17 00:00:00 2001 From: Ari Vuollet Date: Sat, 7 Oct 2023 14:23:06 +0300 Subject: [PATCH] Fix IES profile light computation formula --- Source/Shaders/IESProfile.hlsl | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Source/Shaders/IESProfile.hlsl b/Source/Shaders/IESProfile.hlsl index 710ae8484..2b101f176 100644 --- a/Source/Shaders/IESProfile.hlsl +++ b/Source/Shaders/IESProfile.hlsl @@ -7,7 +7,7 @@ float ComputeLightProfileMultiplier(Texture2D tex, float3 worldPosition, float3 lightPosition, float3 lightDirection) { float3 l = normalize(worldPosition - lightPosition); - float d = dot(lightPosition, lightDirection); + float d = dot(l, lightDirection); float angle = asin(d) / PI + 0.5f; return tex.SampleLevel(SamplerLinearClamp, float2(angle, 0), 0).r; }