diff options
Diffstat (limited to 'res/effectlib/diffuseTransmissionBSDF.glsllib')
-rw-r--r-- | res/effectlib/diffuseTransmissionBSDF.glsllib | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/res/effectlib/diffuseTransmissionBSDF.glsllib b/res/effectlib/diffuseTransmissionBSDF.glsllib new file mode 100644 index 0000000..27b58fc --- /dev/null +++ b/res/effectlib/diffuseTransmissionBSDF.glsllib @@ -0,0 +1,12 @@ +vec4 diffuseTransmissionBSDF( in vec3 N, in vec3 L, in vec3 viewDir, in vec3 lightDiffuse, in vec4 transmissiveColor, in float translucentFalloff, float lightWrap ) +{ + float cosThetaI = max( 0.0f, (dot( N, L ) + lightWrap) / (1.0 + lightWrap) ); + float factor = cosThetaI; + + float l = 0.2126f * transmissiveColor.r + 0.7152f * transmissiveColor.g + 0.0722f * transmissiveColor.b; + + float translucent_thickness = l * l; + float translucent_thickness_exp = exp( translucent_thickness * translucentFalloff); + + return( translucent_thickness_exp * vec4( factor * lightDiffuse, 1.0f ) ); +} |