Fix DFG LUT; needed more samples by default

1 files changed, 5 insertions, 3 deletions

diff --git a/brdf.cginc b/brdf.cginc
index bd44b3f..8a3b2ff 100755
--- a/brdf.cginc
+++ b/brdf.cginc
@@ -166,11 +166,13 @@ float4 brdf(Pbr pbr, LightData data) {
     remainder = saturate(remainder - indirect_specular_cc);
 #endif
 
-    // Standard split-sum IBL
-    float3 f0_spec = lerp(f0, pbr.albedo.xyz, pbr.metallic);
-    float3 ibl_specular_reflectance = lerp(dfg.xxx, dfg.yyy, f0_spec);
+    float3 base_color = lerp(1, pbr.albedo.xyz, pbr.metallic);
+    float3 specular_dfg = lerp(dfg.xxx, dfg.yyy, f0);
+    float3 ibl_specular_reflectance = specular_dfg * base_color;
     float3 indirect_specular = data.indirect.specular * ibl_specular_reflectance;
 
+    return float4(specular_dfg, 1);
+
     specular += indirect_specular;
     remainder = saturate(remainder - indirect_specular);