Use of Clip () in alpha cutouts?

Question

I've seen in a number of examples and the debug of the 'compiled' shader the use of the following for creating a cutout or alpha for a texture:

clip (o.Alpha - Cutoff);

I get the whole alpha and cutoff, that's not the question. I cannot find any more info on the clip() function, especially since the return doesn't actually get assigned.

Any answers?

Answer 1

Best Answer

Answer by THETA · Jul 29, 2011 at 10:05 AM

clip() is an intrinsic HLSL function. It "discards the current pixel if the specified value is less than zero."

http://msdn.microsoft.com/en-us/library/bb204826%28v=vs.85%29.aspx

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Use of Clip () in alpha cutouts?

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