Using red and green channels as normal map and using blue as mask?

[helluvamesh]

@ausernottaken

Isn’t the blue channel just 0.5, or does it get changed a bit after compression? I would think that you would be able to append 0.5 to the red and green channels to create your normal map.

If you mean that you want to replace the blue channel (Z axis) of a tangent-space normalmap with a constant scalar value, then use 1.0 instead of 0.5. Note that this only applies to tangent-space normalmaps, doesn’t work with world-space normalmaps.