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Inverse trig functions in the material editor?

I can't find arccos or any of the other inverse trig functions in the material editor... Is there a way I can maybe implement it or find it elsewhere?

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asked Jul 01 '14 at 08:58 AM in Rendering

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reinux
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You can do it using the custom node. Look into the asin(x), acos(x) and atan2(x) functions. Those should return the inverse sine, cosine and tangent in radians.

I suggest you bookmark this page as sooner or later you may need many of these:

HLSL Intrinsic Functions

That said the inverse functions can be expensive. For what do you need them? There is often a cheaper way to come up with the same information using different math that runs faster on the GPU.

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answered Jul 29 '14 at 11:30 PM

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RyanB STAFF
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