Sync simplex artifact fix
Weathereffects copied over simplex3d that has some recent regression
where it shows skewed grid artifacts. 2D flow noise is also fixed, even
though the artifacts bug has yet to be raised. It is observed (by me)
that it shows the same artifacts on some platforms. To mitigate this
issue that happens due to floating point precision, 2D flow noise hash
function is also converted to integer based.
Bug: 315533269
Test: visually inspect
Flag: NA
Change-Id: Iff8b488a6979fa57acb81685d505f4d0a0955072
2 files changed
