1 files changed, 6 insertions, 3 deletions
diff --git a/brdf.cginc b/brdf.cginc
index 1504ef0..6ca8c8d 100644
--- a/brdf.cginc
+++ b/brdf.cginc
@@ -72,7 +72,6 @@ float4 brdf(Pbr pbr, LightData data) {
   data.direct.NoL = 1;
   data.direct.NoH = 1;
   data.direct.LoH = 1;
-  data.direct.LoV = 1;
 #endif
 
   // Direct
@@ -82,18 +81,22 @@ float4 brdf(Pbr pbr, LightData data) {
     float G = V_GGXSmith(pbr.roughness, data.direct.NoL, data.common.NoV);
 
     float FDG = F * D * G;
+
     float3 direct_specular = FDG * data.direct.color * data.direct.NoL * lerp(1.0f, pbr.albedo.xyz, pbr.metallic);
+    direct_specular = max(0, direct_specular);
     specular += direct_specular;
 
     float3 remainder = (1.0f - direct_specular);
     float Fd = Fd_OrenNayar(pbr.roughness, data.common.NoV, data.direct.NoL, data.direct.LoV) / PI;
     float3 direct_diffuse = Fd * remainder * (1.0f - pbr.metallic) * pbr.albedo.xyz * data.direct.color;
-    diffuse  += direct_diffuse;
+    direct_diffuse = max(0, direct_diffuse);
+    diffuse += direct_diffuse;
   }
 
   // Indirect
-  if (false) {
+  if (true) {
     float F = F_Schlick(data.indirect.LoH, f0, f90);
+    float G = V_GGXSmith(pbr.roughness, data.indirect.NoL, data.common.NoV);
 
     float3 indirect_specular = F * data.indirect.specular;
     specular += indirect_specular;