Fixed the Reinhard inverse tone map function

stanard · stanard · commit 096d935f7f4a · 2025-04-21T08:22:35.000-07:00
diff --git a/MiniEngine/Core/Shaders/ToneMappingUtility.hlsli b/MiniEngine/Core/Shaders/ToneMappingUtility.hlsli
@@ -30,7 +30,7 @@ float3 TM_Reinhard(float3 hdr, float k = 1.0)
 // The inverse of Reinhard
 float3 ITM_Reinhard(float3 sdr, float k = 1.0)
 {
-    return k * sdr / (k - sdr);
+    return k * sdr / (1.0 - sdr);
 }
 
 //

Original file line number	Diff line number	Diff line change
`@@ -30,7 +30,7 @@ float3 TM_Reinhard(float3 hdr, float k = 1.0)`
`30`	`30`	`// The inverse of Reinhard`
`31`	`31`	`float3 ITM_Reinhard(float3 sdr, float k = 1.0)`
`32`	`32`	`{`
`33`		`- return k * sdr / (k - sdr);`
	`33`	`+ return k * sdr / (1.0 - sdr);`
`34`	`34`	`}`
`35`	`35`
`36`	`36`	`//`