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bird_egop
2026-05-09 20:36:43 +03:00
parent d73a6dde70
commit eb458ad9a8
43 changed files with 1562 additions and 1233 deletions
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TexmLib/Extensions.cs
+7 -4
View File
@@ -6,11 +6,14 @@ public static class Extensions
{
return format switch
{
0x22B8 => 32,
0x115C => 16,
0x0 => 8,
0x235 => 16,
0x22C => 16,
0x115C => 16,
0x58 => 16,
0x378 => 32,
0 => 32
0x22B8 => 32,
_ => throw new InvalidOperationException($"Unsupported Texm format {format}")
};
}
}
}
TexmLib/TexmFile.cs
+90 -75
View File
@@ -35,44 +35,31 @@ public record TexmHeader(
/// <param name="Items">Элементы</param>
public record PageHeader(string Page, int Count, List<PageItem> Items);
/// <summary>Элемент PAGE-секции TEXM.</summary>
/// <param name="X">X-координата в атласе.</param>
/// <param name="Width">Ширина элемента в атласе.</param>
/// <param name="Y">Y-координата в атласе.</param>
/// <param name="Height">Высота элемента в атласе.</param>
public record PageItem(short X, short Width, short Y, short Height);
public class TexmFile
/// <summary>TEXM файл.</summary>
/// <param name="FileName">Исходное имя файла текстуры TEXM.</param>
/// <param name="Header">Заголовок файла (length = 32).</param>
/// <param name="MipmapBytes">Байты mipmap уровней.</param>
/// <param name="Pages">PAGE-секция атласа, если присутствует.</param>
/// <param name="IsIndexed">Признак indexed texture с lookup таблицей на 1024 байта.</param>
/// <param name="LookupColors">Lookup таблица цветов: 256 цветов * 4 байта.</param>
public record class TexmFile(
string FileName,
TexmHeader Header,
List<byte[]> MipmapBytes,
PageHeader? Pages,
bool IsIndexed,
byte[] LookupColors)
{
/// <summary>
/// Исходное имя файла текстуры TEXM
/// </summary>
public string FileName { get; set; }
/// <summary>
/// Заголовок файла, всегда 32 байта
/// </summary>
public TexmHeader Header { get; set; }
/// <summary>
/// Если в одной текстуре есть несколько MipMap уровней, тут будет несколько отдельных текстур
/// </summary>
public List<byte[]> MipmapBytes { get; set; }
/// <summary>
/// Если текстура - это атлас, то здесь будет информация о координатах в атласе
/// </summary>
public PageHeader? Pages { get; set; }
/// <summary>
/// В некоторых случаях, текстура может быть закодирована как lookup таблица на 1024 байта (256 цветов),
/// тогда сначала идёт 1024 байта lookup таблицы, а далее сами мипмапы, по 1 байту (каждый байт - индекс в lookup таблице)
/// </summary>
public bool IsIndexed { get; set; }
/// <summary>
/// Lookup таблица цветов (каждый цвет закодирован как 4 байта (ARGB))
/// </summary>
public byte[] LookupColors { get; set; }
public async Task WriteToFolder(string folder)
public Task WriteToFolder(string folder)
{
if (Directory.Exists(folder))
if (!Directory.Exists(folder))
{
Directory.CreateDirectory(folder);
}
@@ -84,8 +71,8 @@ public class TexmFile
{
for (var i = 0; i < Header.MipmapCount; i++)
{
var mipWidth = Header.Width / (int) Math.Pow(2, i);
var mipHeight = Header.Height / (int) Math.Pow(2, i);
var mipWidth = Math.Max(1, Header.Width >> i);
var mipHeight = Math.Max(1, Header.Height >> i);
var reinterpretedPixels = ReinterpretIndexedMipmap(MipmapBytes[i], LookupColors);
var image = Image.LoadPixelData<Rgba32>(reinterpretedPixels, mipWidth, mipHeight);
@@ -93,13 +80,13 @@ public class TexmFile
image.SaveAsPng(Path.Combine(outputDir, Path.GetFileName(FileName)) + $"_{mipWidth}x{mipHeight}_indexed.png");
}
return;
return Task.CompletedTask;
}
for (var i = 0; i < Header.MipmapCount; i++)
{
var mipWidth = Header.Width / (int) Math.Pow(2, i);
var mipHeight = Header.Height / (int) Math.Pow(2, i);
var mipWidth = Math.Max(1, Header.Width >> i);
var mipHeight = Math.Max(1, Header.Height >> i);
var reinterpretedPixels = ReinterpretMipmapBytesAsRgba32(
MipmapBytes[i],
@@ -112,14 +99,16 @@ public class TexmFile
image.SaveAsPng(Path.Combine(outputDir, Path.GetFileName(FileName)) + $"_{Header.Format}_{mipWidth}x{mipHeight}.png");
}
return Task.CompletedTask;
}
public byte[] GetRgba32BytesFromMipmap(int index, out int mipWidth, out int mipHeight)
{
var mipmapBytes = MipmapBytes[index];
mipWidth = Header.Width / (int) Math.Pow(2, index);
mipHeight = Header.Height / (int) Math.Pow(2, index);
mipWidth = Math.Max(1, Header.Width >> index);
mipHeight = Math.Max(1, Header.Height >> index);
if (IsIndexed)
{
@@ -151,7 +140,7 @@ public class TexmFile
result[i * 4 + 0] = r;
result[i * 4 + 1] = g;
result[i * 4 + 2] = b;
result[i * 4 + 3] = 255;
result[i * 4 + 3] = a;
}
return result;
@@ -165,6 +154,8 @@ public class TexmFile
888 => ReinterpretAs888(bytes, mipWidth, mipHeight),
4444 => ReinterpretAs4444(bytes, mipWidth, mipHeight),
565 => ReinterpretAs565(bytes, mipWidth, mipHeight),
556 => ReinterpretAs556(bytes, mipWidth, mipHeight),
88 => ReinterpretAs88(bytes, mipWidth, mipHeight),
_ => throw new InvalidOperationException($"Invalid format {format}")
};
@@ -178,22 +169,38 @@ public class TexmFile
var result = new byte[bytes.Length * 2];
for (var i = 0; i < span.Length; i += 2)
{
var rawPixel = span.Slice(i, 2);
var rawPixel = BinaryPrimitives.ReadUInt16LittleEndian(span.Slice(i, 2));
// swap endianess
(rawPixel[0], rawPixel[1]) = (rawPixel[1], rawPixel[0]);
var r = (byte)(((rawPixel >> 11) & 0b11111) * 255 / 31);
var g = (byte)(((rawPixel >> 5) & 0b111111) * 255 / 63);
var b = (byte)((rawPixel & 0b11111) * 255 / 31);
var r = (byte)(((rawPixel[0] >> 3) & 0b11111) * 255 / 31);
var g = (byte)((((rawPixel[0] & 0b111) << 3) | ((rawPixel[1] >> 5) & 0b111)) * 255 / 63);
var b = (byte)((rawPixel[1] & 0b11111) * 255 / 31);
result[i / 2 * 4 + 0] = (byte)(0xff - r);
result[i / 2 * 4 + 1] = (byte)(0xff - g);
result[i / 2 * 4 + 2] = (byte)(0xff - b);
result[i / 2 * 4 + 0] = r;
result[i / 2 * 4 + 1] = g;
result[i / 2 * 4 + 2] = b;
result[i / 2 * 4 + 3] = 0xff;
}
// swap endianess back
(rawPixel[0], rawPixel[1]) = (rawPixel[1], rawPixel[0]);
return result;
}
private byte[] ReinterpretAs556(byte[] bytes, int mipWidth, int mipHeight)
{
var span = bytes.AsSpan();
var result = new byte[bytes.Length * 2];
for (var i = 0; i < span.Length; i += 2)
{
var rawPixel = BinaryPrimitives.ReadUInt16LittleEndian(span.Slice(i, 2));
var r = (byte)(((rawPixel >> 11) & 0b11111) * 255 / 31);
var g = (byte)(((rawPixel >> 6) & 0b11111) * 255 / 31);
var b = (byte)((rawPixel & 0b111111) * 255 / 63);
result[i / 2 * 4 + 0] = r;
result[i / 2 * 4 + 1] = g;
result[i / 2 * 4 + 2] = b;
result[i / 2 * 4 + 3] = 0xff;
}
return result;
@@ -206,23 +213,36 @@ public class TexmFile
var result = new byte[bytes.Length * 2];
for (var i = 0; i < span.Length; i += 2)
{
var rawPixel = span.Slice(i, 2);
var rawPixel = BinaryPrimitives.ReadUInt16LittleEndian(span.Slice(i, 2));
// swap endianess
(rawPixel[0], rawPixel[1]) = (rawPixel[1], rawPixel[0]);
var a = (byte)(((rawPixel[0] >> 4) & 0b1111) * 17);
var b = (byte)(((rawPixel[0] >> 0) & 0b1111) * 17);
var g = (byte)(((rawPixel[1] >> 4) & 0b1111) * 17);
var r = (byte)(((rawPixel[1] >> 0) & 0b1111) * 17);
var a = (byte)(((rawPixel >> 12) & 0b1111) * 17);
var r = (byte)(((rawPixel >> 8) & 0b1111) * 17);
var g = (byte)(((rawPixel >> 4) & 0b1111) * 17);
var b = (byte)((rawPixel & 0b1111) * 17);
result[i / 2 * 4 + 0] = r;
result[i / 2 * 4 + 1] = g;
result[i / 2 * 4 + 2] = b;
result[i / 2 * 4 + 3] = a;
// swap endianess back
(rawPixel[0], rawPixel[1]) = (rawPixel[1], rawPixel[0]);
}
return result;
}
private byte[] ReinterpretAs88(byte[] bytes, int mipWidth, int mipHeight)
{
var span = bytes.AsSpan();
var result = new byte[bytes.Length * 2];
for (var i = 0; i < span.Length; i += 2)
{
var l = span[i];
var a = span[i + 1];
result[i / 2 * 4 + 0] = l;
result[i / 2 * 4 + 1] = l;
result[i / 2 * 4 + 2] = l;
result[i / 2 * 4 + 3] = a;
}
return result;
@@ -237,14 +257,9 @@ public class TexmFile
{
var rawPixel = span.Slice(i, 4);
var r = rawPixel[0];
var g = rawPixel[1];
var b = rawPixel[2];
var w = rawPixel[3];
result[i + 0] = r;
result[i + 1] = g;
result[i + 2] = b;
result[i + 0] = rawPixel[0];
result[i + 1] = rawPixel[1];
result[i + 2] = rawPixel[2];
result[i + 3] = 255;
}
@@ -270,7 +285,7 @@ public class TexmFile
result[i + 0] = r;
result[i + 1] = g;
result[i + 2] = b;
result[i + 3] = a;
result[i + 3] = 255;
// swap endianess back
// (rawPixel[0], rawPixel[1], rawPixel[2], rawPixel[3]) = (rawPixel[3], rawPixel[2], rawPixel[1], rawPixel[0]);
@@ -278,4 +293,4 @@ public class TexmFile
return result;
}
}
}
TexmLib/TexmParser.cs
+24 -37
View File
@@ -20,18 +20,18 @@ public class TexmParser
var widthBytes = headerBytes[4..8];
var heightBytes = headerBytes[8..12];
var mipmapCountBytes = headerBytes[12..16];
var strideBytes = headerBytes[16..20];
var magic1Bytes = headerBytes[20..24];
var formatOptionFlagsBytes = headerBytes[24..28];
var flags4Bytes = headerBytes[16..20];
var flags5Bytes = headerBytes[20..24];
var unk6Bytes = headerBytes[24..28];
var formatBytes = headerBytes[28..32];
var texmAscii = Encoding.ASCII.GetString(texmHeader).Trim('\0');
var width = BinaryPrimitives.ReadInt32LittleEndian(widthBytes);
var height = BinaryPrimitives.ReadInt32LittleEndian(heightBytes);
var mipmapCount = BinaryPrimitives.ReadInt32LittleEndian(mipmapCountBytes);
var stride = BinaryPrimitives.ReadInt32LittleEndian(strideBytes);
var magic1 = BinaryPrimitives.ReadInt32LittleEndian(magic1Bytes);
var formatOptionFlags = BinaryPrimitives.ReadInt32LittleEndian(formatOptionFlagsBytes);
var flags4 = BinaryPrimitives.ReadInt32LittleEndian(flags4Bytes);
var flags5 = BinaryPrimitives.ReadInt32LittleEndian(flags5Bytes);
var unk6 = BinaryPrimitives.ReadInt32LittleEndian(unk6Bytes);
var format = BinaryPrimitives.ReadInt32LittleEndian(formatBytes);
if (texmAscii != "Texm")
@@ -39,64 +39,56 @@ public class TexmParser
return new TexmParseResult(null, "Файл не начинается с Texm");
}
var textureFile = new TexmFile()
{
FileName = file
};
var header = new TexmHeader(
texmAscii,
width,
height,
mipmapCount,
stride,
magic1,
formatOptionFlags,
flags4,
flags5,
unk6,
format
);
textureFile.Header = header;
List<byte[]> mipmapBytesList;
var isIndexed = false;
byte[] lookupColors = [];
if (format == 0)
{
// если формат 0, то текстура использует lookup таблицу в первых 1024 байтах (256 разных цветов в формате ARGB 888)
var lookupColors = new byte[1024];
lookupColors = new byte[1024];
stream.ReadExactly(lookupColors, 0, lookupColors.Length);
textureFile.LookupColors = lookupColors;
var mipmapBytesList = ReadMipmapsAsIndexes(
mipmapBytesList = ReadMipmapsAsIndexes(
stream,
mipmapCount,
width,
height
);
textureFile.MipmapBytes = mipmapBytesList;
textureFile.IsIndexed = true;
isIndexed = true;
}
else
{
var mipmapBytesList = ReadMipmaps(
mipmapBytesList = ReadMipmaps(
stream,
format.AsStride(),
mipmapCount,
width,
height
);
textureFile.MipmapBytes = mipmapBytesList;
}
PageHeader? pages = null;
if (stream.Position < stream.Length)
{
// has PAGE data
var pageHeader = ReadPage(stream);
textureFile.Pages = pageHeader;
pages = ReadPage(stream);
}
var textureFile = new TexmFile(file, header, mipmapBytesList, pages, isIndexed, lookupColors);
return new TexmParseResult(textureFile);
}
@@ -142,17 +134,12 @@ public class TexmParser
private static List<byte[]> ReadMipmaps(Stream stream, int stride, int mipmapCount, int topWidth, int topHeight)
{
if (stride == 0)
{
stride = 16;
}
List<int> mipmapByteLengths = [];
for (int i = 0; i < mipmapCount; i++)
{
var mipWidth = topWidth / (int) Math.Pow(2, i);
var mipHeight = topHeight / (int) Math.Pow(2, i);
var mipWidth = Math.Max(1, topWidth >> i);
var mipHeight = Math.Max(1, topHeight >> i);
var imageByteLength = mipWidth * mipHeight * (stride / 8);
mipmapByteLengths.Add(imageByteLength);
@@ -178,8 +165,8 @@ public class TexmParser
for (int i = 0; i < mipmapCount; i++)
{
var mipWidth = topWidth / (int) Math.Pow(2, i);
var mipHeight = topHeight / (int) Math.Pow(2, i);
var mipWidth = Math.Max(1, topWidth >> i);
var mipHeight = Math.Max(1, topHeight >> i);
var imageByteLength = mipWidth * mipHeight;
mipmapByteLengths.Add(imageByteLength);
@@ -198,4 +185,4 @@ public class TexmParser
return mipmapBytesList;
}
}
}