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?

Answer 1

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.