ShuriZma
/
BizHawk
mirror of https://github.com/TASEmulators/BizHawk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

New GBC LCD correction for Gambatte palette from documented shader research https://forums.libretro.com/t/real-gba-and-ds-phat-colors/1540 (#1917)

This commit is contained in:
TiKevin83 2020-04-08 19:19:18 -04:00 committed by GitHub
parent f9c6e02943
commit 0bfe178650
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 9 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
BizHawk.Emulation.Cores/Consoles/Nintendo/Gameboy/GBColors.cs
View File

@ -51,9 +51,15 @@ namespace BizHawk.Emulation.Cores.Nintendo.Gameboy
public static Triple GambatteColor(Triple c)
{
Triple ret;
ret.r = (c.r * 13 + c.g * 2 + c.b) >> 1;
ret.g = (c.g * 3 + c.b) << 1;
ret.b = (c.r * 3 + c.g * 2 + c.b * 11) >> 1;
double gammaR = Math.Pow((double)c.r / 31, 2.2);
double gammaG = Math.Pow((double)c.g / 31, 2.2);
double gammaB = Math.Pow((double)c.b / 31, 2.2);
ret.r = (int)(Math.Pow(gammaR * .87 + gammaG * .18 - gammaB * .05, 1/ 2.2) * 255 + .5);
ret.g = (int)(Math.Pow(gammaG * .66 + gammaR * .115 + gammaB * .225, 1/ 2.2) * 255 + .5);
ret.b = (int)(Math.Pow(gammaB * .79 + gammaR * .14 + gammaG * .07, 1/ 2.2) * 255 + .5);
ret.r = Math.Max(0, Math.Min(255, ret.r));
ret.g = Math.Max(0, Math.Min(255, ret.g));
ret.b = Math.Max(0, Math.Min(255, ret.b));
return ret;
}