44 lines
1.3 KiB
C#
44 lines
1.3 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace Switch_Toolbox.Library
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{
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public class R4G4
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{
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public static byte[] Decompress(byte[] Input, int Width, int Height, bool Alpha)
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{
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byte[] Output = new byte[Width * Height * 4];
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byte[] comp = new byte[4] { 0xFF, 0xFF, 0xFF, 0xFF };
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int bpp = (int)STGenericTexture.GetBytesPerPixel(TEX_FORMAT.R4G4_UNORM);
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for (int Y = 0; Y < Height; Y++)
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{
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for (int X = 0; X < Width; X++)
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{
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int InputOffset = (Y * Width + X) * bpp;
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int OutputOffset = (Y * Width + X) * 4;
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int pixel = 0;
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for (int i = 0; i < bpp; i++)
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pixel |= Input[InputOffset + i] << (8 * i);
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comp[0] = (byte)((pixel & 0xF) * 17);
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comp[1] = (byte)(((pixel & 0xF0) >> 4) * 17);
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Output[OutputOffset + 0] = comp[0];
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Output[OutputOffset + 1] = comp[1];
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Output[OutputOffset + 2] = comp[2];
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Output[OutputOffset + 3] = comp[3];
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}
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}
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return Output;
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}
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}
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}
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