Haihua Hu f3653a5e9c gleffects: fix gleffects fisheye shader compile error
On some embedded systems, sqrt() is not supported in the shader,
use the actual value of sqrt(2) instead.

Signed-off-by: Haihua Hu <b55597@freescale.com>
Bugzilla: https://bugzilla.gnome.org/show_bug.cgi?id=761271
2016-01-29 14:25:21 +11:00
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