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Handle weird mip map/size inconsistencies, maybe?

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This commit is contained in:
Ottermandias 2022-09-23 17:59:07 +02:00
parent daaee4feb6
commit 5c81970558
1 changed files with 25 additions and 0 deletions
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25
Penumbra/Import/Textures/TexFileParser.cs
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@ -24,12 +24,37 @@ public static class TexFileParser
throw new Exception( $"Could not obtain dimensionality from {header.Type}." );
}
meta.MipLevels = CountMipLevels( data, in header );
var scratch = ScratchImage.Initialize( meta );
CopyData( scratch, r );
return scratch;
}
private static unsafe int CountMipLevels( Stream data, in TexFile.TexHeader header )
{
var lastOffset = 80u;
var levels = 1;
for( var i = 1; i < 13; ++i )
{
var offset = header.OffsetToSurface[ i ];
var diff = offset - lastOffset;
if( offset > 0 && offset < data.Length && diff > 0 )
{
lastOffset = offset;
++levels;
}
else
{
return levels;
}
}
return 13;
}
private static unsafe void CopyData( ScratchImage image, BinaryReader r )
{
fixed( byte* ptr = image.Pixels )