GLSL Double Precision Angle, Trig and Exponential Functions Workaround

Question

In GLSL there's rudimentary support for double precision variables and operations which can be found here. However they also mention "Double-precision versions of angle, trigonometry, and exponential functions are not supported.".

Is there a simple workaround for this, or do I have to write my own functions from scratch?

score 4 · Accepted Answer · edited Sep 07 '14 at 15:22

4

this link seem's to be the best answer

So yes, you'll need to make your own implementation for those functions.

glibc source may be your friend.

edited Sep 07 '14 at 15:22

BenMorel

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answered Mar 20 '14 at 03:47

j-p

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That looks like it's going to be a dirty, dirty port... Thanks! – Benjamin Cecchetto Mar 20 '14 at 04:23
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This link has GLSL source for double atan2 http://outerra.blogspot.cz/2014/05/double-precision-approximations-for-map.html – aeroson Apr 21 '17 at 21:28
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By 2020, the inevitable link decay has happened, which is why answers ought to quote relevant parts of what they link to. – Arto Bendiken Jul 16 '20 at 09:29

GLSL Double Precision Angle, Trig and Exponential Functions Workaround

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