MetzNet
/
dfhack
3
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Use a cast instead of floor in perlin noise for performance.

develop
Alexander Gavrilov 2013-10-08 18:16:33 +04:00
parent a273327c6a
commit bed1e00a6e
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
library/include/modules/PerlinNoise.inc
Unescape Escape View File

@ -60,7 +60,8 @@ inline void PerlinNoise<T,VSIZE,BITS,IDXT>::Impl<mask,i>::setup(
) {
Impl<mask,i-1>::setup(self, pv, pt);
T t = std::floor(pv[i]);
int32_t t = int32_t(pv[i]);
t -= (pv[i]<t);
pt[i].s = s_curve(pt[i].r0 = pv[i] - t);
unsigned b = unsigned(int32_t(t));