4 Commits

Author	SHA1	Message	Date
Romain Guy	4738e93b83	Replace Cloth DFG approximation with DFG LUT ... By removing the Fresnel term (often ommitted from fabric/cloth BRDFs) we can store the DG term for the cloth BRDF in the 3rd channel of the existing DFG LUT.	2019-02-21 11:44:52 -08:00
Romain Guy	128ab657df	Switch cloth model from Ashikhmin NDF to "Charlie" NDF (#53) ... * Add new Cloth NDF Based on the work by Estevez and Kulla, also known as the "Charlie" sheen. * Restore DFG computation to GGX * New proposed approximation for Cloth DFG * Add "Charlie" cloth DFG approximation to cmgen * Switch to "Charlie" sheen for cloth shading * Document the new cloth NDF and DFG approximation	2018-08-08 17:22:41 -07:00
Romain Guy	f3c4582727	Update incorrect Charlie DFG (#48)	2018-08-08 10:26:26 -07:00
Romain Guy	b3d758f3b3	Initial commit	2018-08-03 10:38:22 -07:00