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

improve AR integerization

This commit is contained in:
zeromus 2014-05-03 03:25:09 +00:00
parent df6fa1dec0
commit 26c30c44ca
1 changed files with 32 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
BizHawk.Client.EmuHawk/DisplayManager/Filters/Gui.cs
View File

@ -57,12 +57,43 @@ namespace BizHawk.Client.EmuHawk.Filters
//widthScale = (float)Math.Floor(widthScale);
//heightScale = (float)Math.Floor(heightScale);
//don't distorted the original texture
//don't distort the original texture
float apparentWidth = sourceWidth * widthScale;
float apparentHeight = sourceHeight * heightScale;
widthScale = (float)Math.Floor(apparentWidth / textureWidth);
heightScale = (float)Math.Floor(apparentHeight / textureHeight);
//prevent dysfunctional reduction to 0x
if (widthScale == 0) widthScale = 1;
if (heightScale == 0) heightScale = 1;
REDO:
apparentWidth = sourceWidth * widthScale;
apparentHeight = sourceHeight * heightScale;
//in case we've exaggerated the aspect ratio too far beyond the goal by our blunt integerizing, heres a chance to fix it by reducing one of the dimensions
float goalAr = ((float)sourceWidth)/sourceHeight;
float haveAr = apparentWidth / apparentHeight;
if (widthScale>1)
{
float tryAnotherAR = (widthScale - 1)/heightScale;
if(Math.Abs(tryAnotherAR-goalAr) < Math.Abs(haveAr-goalAr))
{
widthScale -= 1;
goto REDO;
}
}
if (heightScale > 1)
{
float tryAnotherAR = widthScale / (heightScale-1);
if (Math.Abs(tryAnotherAR - goalAr) < Math.Abs(haveAr - goalAr))
{
heightScale -= 1;
goto REDO;
}
}
vw = (int)(widthScale * textureWidth);
vh = (int)(heightScale * textureHeight);
}