st/nine: Remove usage of SQRT in ff code
authorAxel Davy <axel.davy@ens.fr>
Sat, 6 Feb 2016 18:55:54 +0000 (19:55 +0100)
committerAxel Davy <axel.davy@ens.fr>
Fri, 12 Feb 2016 22:26:36 +0000 (23:26 +0100)
commit6b43f5b1d4efca53f246296f98db00ff8f7544b6
tree26cb6a2370957b7974f54c2dddc55809755ca836
parent17078d92ea524c9f0e9dff8d17f8b2df752d24cc
st/nine: Remove usage of SQRT in ff code

SQRT is not supported everywhere, so replace
it by RSQ + MUL and handle case <= 0.

Signed-off-by: Axel Davy <axel.davy@ens.fr>
src/gallium/state_trackers/nine/nine_ff.c