st/nine: Fix non inversible matrix check
authorAxel Davy <davyaxel0@gmail.com>
Sat, 10 Mar 2018 17:49:59 +0000 (18:49 +0100)
committerAxel Davy <davyaxel0@gmail.com>
Sun, 18 Mar 2018 21:53:46 +0000 (22:53 +0100)
commitdbc24835d75466951a44b391b42e39461a6ac5a2
tree3f37c50512b19d06407799b8ce5ecb6218a351ce
parentf61e9a958bd8d61cb7ca575ca987caefc6edbffd
st/nine: Fix non inversible matrix check

There was a missing absolute value when
checking if the determinant was big enough.

Fixes: https://github.com/iXit/Mesa-3D/issues/292
Signed-off-by: Axel Davy <davyaxel0@gmail.com>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
CC: "17.3 18.0" <mesa-stable@lists.freedesktop.org>
src/gallium/state_trackers/nine/nine_ff.c