From 07ec3969682f5c2cd652a7f426e7d20f5439dff6 Mon Sep 17 00:00:00 2001
From: Anselme <anselme.francois@gmail.com>
Date: Sat, 26 Aug 2017 11:36:03 +0200
Subject: [PATCH] fixed black pixels artifacts when looking down

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

diff --git a/shaders/lighting.frag.glsl b/shaders/lighting.frag.glsl
index 048ed7d..0497e5e 100644
--- a/shaders/lighting.frag.glsl
+++ b/shaders/lighting.frag.glsl
@@ -138,7 +138,7 @@ vec3 GGX(
     // Cook-Torrance BRDF
     float NDF = DistributionGGX(N, H, roughness);
     float G = GeometrySchlickGGX(NdotV, roughness) * GeometrySchlickGGX(NdotL, roughness);
-    vec3 F = F0 + (1.0 - F0) * pow(1.0 - max(dot(H, V), 0.0), 5.0);
+    vec3 F = F0 + (1.0 - F0) * pow(1.0 - clamp(dot(H, V), 0.0, 1.0), 5.0);
 
     vec3 nominator    = NDF * G * F;
     float denominator = 4 * NdotV * NdotL + 0.001; // 0.001 to prevent divide by zero.