piwalker/melonDS
1
0
Fork 0
mirror of https://github.com/melonDS-emu/melonDS.git synced 2025-07-23 14:19:55 -06:00
Code Issues Packages Projects Releases Wiki Activity

betterer approximation

Browse Source
This commit is contained in:
Jaklyy
2024-03-16 12:09:47 -04:00
parent 668e5580e0
commit 672e6d03fa
1 changed files with 15 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
src/GPU3D_Soft.h
View File

@ -181,10 +181,22 @@ private:
// Z-buffering: linear interpolation // Z-buffering: linear interpolation
// still doesn't quite match hardware... // still doesn't quite match hardware...
if (z0 < z1) if (dir)
return z0 + (((z1 - z0) / (xdiff << 1)) * (x<<1)); {
// seems like y dir does different interpolation?
// this probably isn't right...
if (z0 < z1)
return z0 + (z1-z0) * x / xdiff;
else
return z1 + (z0-z1) * (xdiff-x) / xdiff;
}
else else
return z1 + (((z0 - z1) / (xdiff << 1)) * (xdiff-x<<1)); {
if (z0 < z1)
return z0 + (((z1-z0) / xdiff & ~0x1) * x);
else
return z1 + (((z0-z1) / xdiff & ~0x1) * (xdiff-x) + ((z0-z1) & 0xFF));
}
} }
} }