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specialize saturn aspect ratio, changing 330x240 -> 330x254 as best I can figure. pretty good for a baseline.

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zeromus 2017-06-26 21:20:55 -05:00
parent 3f45406d7d
commit 676a725883
1 changed files with 28 additions and 0 deletions
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28
BizHawk.Emulation.Cores/Consoles/Sega/Saturn/Saturnus.cs
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@ -564,5 +564,33 @@ namespace BizHawk.Emulation.Cores.Consoles.Sega.Saturn
private const int NtscFpsDen = 61 * 455 * 1051;
public override int VsyncNumerator => _isPal ? PalFpsNum : NtscFpsNum;
public override int VsyncDenominator => _isPal ? PalFpsDen : NtscFpsDen;
private int _virtualWidth;
private int _virtualHeight;
public override int VirtualWidth => _virtualWidth;
public override int VirtualHeight => _virtualHeight;
protected override void FrameAdvancePost()
{
//overkill for constants, but here for future use
//mednafen:
//takes 320x240 -> 302x240(nominal) --> 1.2583333333333333333333333333333
//we return 330x240 now. Those are bonus columns so we want a wider AR technically
//mednafen crunches 320 to 302 --> 1.0596026490066225165562913907285 ratio
//so we take 330 / 1.0596026490066225165562913907285 = 311.43749999999999999999999999999
//but we don't actually want to do that; we're optimized for 1x window sizes; lets expand height instead of crunching width
//at any rate we have our AR as (330 / (320/302)) / 240 = 1.29765625
//let's size up instead.. solve VX/VY = (330 / (320/302)) / 240 for VX=330;
//330 / VY = (330 / (320/302)) / 240
//330 * 240 / (330 / (320/302)) = VY
//330 * 240 * 320 / 330 / 302 = VY
//240 * 320 / 302 = VY
//254.3 = VY -> Final answer 330x254
_virtualWidth = 330;
_virtualHeight = 254;
}
}
}