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#ActualCryZe

Posted 30 January 2013 - 09:20 AM


I was testing this with normalized Blinn-Phong, not a microfaceted BRDF


Blinn-Phong is the microfacet version of Phong. Blinn-Phong describes the percentage of microfacets oriented towards the halfway vector, cause these are the only microfacets reflecting light into the eye. So if you are extending your already partially existing microfacet BRDF by a fresnel term, you should use the microfacets normal, aka your halfway vector.

#2CryZe

Posted 30 January 2013 - 09:20 AM


I was testing this with normalized Blinn-Phong, not a microfaceted BRDF


Blinn-Phong is the microfacet version of Phong. Blinn-Phong describes the percentage of microfacets oriented towards the halfway vector, cause these are the only microfacets reflecting light into the eye. So if you are extending your already partially existing microfacet BRDF by a fresnel term, you should use the microfacets normal, aka your halfway vector.

#1CryZe

Posted 30 January 2013 - 09:17 AM

I was testing this with normalized Blinn-Phong, not a microfaceted BRDF

Blinn-Phong is the microfacet version of Phong. Blinn-Phong describes the distribution of microfacets oriented towards the halfway vector, cause these are the only microfacets reflecting light into the eye. So if you are extending your already partially existing microfacet BRDF by a fresnel term, you should use the microfacets normal, aka your halfway vector.


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