Height Adjust filter - formula

Question

Let's say I have a UV unwrapped model with multiple texel densities: 4 [base Td], 8, 15, 20, 25, 30, 35, 40 px/cm, and I want to perfectly equalize their effects on normals-height using Height Adjust filter:

- what is the precise formula that I should calculate to put its result into Height Adjust filter?

height adjust - forum image.png

Sempoo · Answer

I have conducted a test and it seems that this formula is: Height Adjust Multiply = square root of the multiplier between two Texel Densities.For example suppose we have Td = 4 and Td = 15, thus 15 / 4 = 3.75and now the square root of 3.75 = 1.936so to obtain equal height magnitude between two Td = 4 and Td = 15 we need to put 1.936 into the Multiply field in the Height Adjust filter.

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