NormalRoughnessMetallic packing needs to renormalize normals and compute roughness from normal variance
najadojo opened this issue · 0 comments
najadojo commented
Incorrect results are being produced from the NRM packing. The current algorithm does a simple value copy but to maintain comparative visual equality we need to renormalize the normal values and also compute roughness from normal variance.
Repro steps:
Input Normal texture:
Input Metallic Roughness texture:
Expected NRM texture:
Actual NRM texture:
