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Fix remaining Switch deswizzling issues

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Related: #2001
This commit is contained in:
ds5678 2025-11-27 13:41:03 -08:00
parent 4529fc218e
commit cdf4f3f24d
1 changed files with 48 additions and 15 deletions
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55
Source/AssetRipper.SourceGenerated.Extensions/SwitchSwizzle.cs
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@ -76,7 +76,7 @@ public static class SwitchSwizzle
int gobDstY = (i * blockHeight + k) * GobYTexelCount + gobY;
int gobDstLinPos = gobDstY * blockCountX * TexelByteSize + gobDstX * TexelByteSize;
Array.Copy(data, srcPos, newData, gobDstLinPos, TexelByteSize);
data.AsSpan(srcPos, TexelByteSize).CopyTo(newData.AsSpan(gobDstLinPos, TexelByteSize));
srcPos += TexelByteSize;
}
@ -84,8 +84,24 @@ public static class SwitchSwizzle
}
}
// We need to remove padding from the data now, so that it matches the expected layout for later decoding.
// The resulting arrays will have extra unused data at the end, but we need to leave it there
// because TextureConverter expects the data to be at least texture.CompleteImageSize bytes long.
if (blockSize.Height > 1)
{
int dstBlockCountX = CeilDivide(texture.Width_C28, blockSize.Width);
if (dstBlockCountX != blockCountX)
{
byte[] croppedImageData = new byte[newData.Length];
int dstBlockCountY = CeilDivide(texture.Height_C28, blockSize.Height);
for (int y = 0; y < dstBlockCountY; y++)
{
newData.AsSpan(y * blockCountX * TexelByteSize, dstBlockCountX * TexelByteSize).CopyTo(croppedImageData.AsSpan(y * dstBlockCountX * TexelByteSize));
}
return croppedImageData;
}
return newData;
}
@ -95,17 +111,37 @@ public static class SwitchSwizzle
return newData;
}
// This will have extra unused data at the end, but we need to leave it there
// because TextureConverter expects the data to be at least texture.CompleteImageSize bytes long.
byte[] croppedData = new byte[newData.Length];
int rowBytesSrc = paddedSize.Width * pixelSize;
int rowBytesDst = texture.Width_C28 * pixelSize;
for (int y = 0; y < texture.Height_C28; y++)
{
Array.Copy(newData, y * paddedSize.Width * pixelSize, croppedData, y * texture.Width_C28 * pixelSize, texture.Width_C28 * pixelSize);
newData.AsSpan(y * rowBytesSrc, rowBytesDst).CopyTo(croppedData.AsSpan(y * rowBytesDst, rowBytesDst));
}
if (realFormat == texture.Format_C28E)
{
return croppedData;
}
// Convert RGBA to RGB
Debug.Assert(pixelSize % 4 == 0);
int actualPixelSize = pixelSize / 4 * 3;
byte[] finalData = new byte[croppedData.Length];
for (int y = 0; y < texture.Height_C28; y++)
{
int srcOffset = y * texture.Width_C28 * pixelSize;
int dstOffset = y * texture.Width_C28 * actualPixelSize;
for (int x = 0; x < texture.Width_C28; x++)
{
int srcIndex = srcOffset + x * pixelSize;
int dstIndex = dstOffset + x * actualPixelSize;
croppedData.AsSpan(srcIndex, actualPixelSize).CopyTo(finalData.AsSpan(dstIndex, actualPixelSize));
}
}
return finalData;
}
/// <remarks>
/// Some of these are guesses based on others and that texels are always 16 bytes in size.
/// </remarks>
@ -153,15 +189,12 @@ public static class SwitchSwizzle
return 1 << new EndianSpanReader(platformBlob.AsSpan(8), endianType).ReadInt32();
}
private static TextureFormat GetCorrectedSwitchTextureFormat(TextureFormat format)
{
// This is suspicious. I didn't encounter any RGB24 textures in the files I have available.
// Assuming it's correct, we likely need additional code in this file to convert RGBA pixels to RGB.
// Also, RGB48 might need similar treatment.
return format switch
private static TextureFormat GetCorrectedSwitchTextureFormat(TextureFormat format) => format switch
{
TextureFormat.RGB24 => TextureFormat.RGBA32,
TextureFormat.RGB48 => TextureFormat.RGBA64,
TextureFormat.RGB24_SIGNED => TextureFormat.RGBA32_SIGNED,
TextureFormat.RGB48_SIGNED => TextureFormat.RGBA64_SIGNED,
_ => format
};
}
}