Add specular quantization

1 files changed, 9 insertions, 0 deletions

diff --git a/yum_lighting.cginc b/yum_lighting.cginc
index 604133f..a7cb4ab 100644
--- a/yum_lighting.cginc
+++ b/yum_lighting.cginc
@@ -132,6 +132,15 @@ YumLighting GetYumLighting(v2f i, YumPbr pbr) {
 

   light.specular = getIndirectSpecular(i, pbr, light.view_dir);

 

+#if defined(_QUANTIZE_SPECULAR)

+  float specular_luminance = dot(light.specular, float3(0.2126, 0.7152, 0.0722));  // convert to luminance

+  light.specular = light.specular * floor(specular_luminance * _Quantize_Specular_Steps) / _Quantize_Specular_Steps;

+#endif

+#if defined(_QUANTIZE_DIFFUSE)

+  float diffuse_luminance = dot(light.diffuse, float3(0.2126, 0.7152, 0.0722));  // convert to luminance

+  light.diffuse = light.diffuse * floor(diffuse_luminance * _Quantize_Diffuse_Steps) / _Quantize_Diffuse_Steps;

+#endif

+

 	light.NoL = saturate(dot(pbr.normal, light.dir));

 #if defined(_QUANTIZE_NOL)

   light.NoL = floor(light.NoL * _Quantize_NoL_Steps) / _Quantize_NoL_Steps;