From e1e19332447d286783eb77cd0b15f05456572da3 Mon Sep 17 00:00:00 2001
From: Alfonso Grimaldo <48926464+LiveTrower@users.noreply.github.com>
Date: Sat, 24 May 2025 20:10:02 -0600
Subject: [PATCH] fix missing ibl reconstruction from dfg multiscattering

---
 .../shaders/forward_clustered/scene_forward_clustered.glsl      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/servers/rendering/renderer_rd/shaders/forward_clustered/scene_forward_clustered.glsl b/servers/rendering/renderer_rd/shaders/forward_clustered/scene_forward_clustered.glsl
index 7f2a9d2ecdc..1e09e5ed105 100644
--- a/servers/rendering/renderer_rd/shaders/forward_clustered/scene_forward_clustered.glsl
+++ b/servers/rendering/renderer_rd/shaders/forward_clustered/scene_forward_clustered.glsl
@@ -2078,7 +2078,7 @@ void fragment_shader(in SceneData scene_data) {
 
 		// cheap luminance approximation
 		float f90 = clamp(50.0 * f0.g, metallic, 1.0);
-		indirect_specular_light *= energy_compensation * (f90 * envBRDF.x + f0 * envBRDF.y);
+		indirect_specular_light *= energy_compensation * ((f90 - f0) * envBRDF.x + f0 * envBRDF.y);
 #endif
 	}