mirror of
https://github.com/sampletext32/ParkanPlayground.git
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83 lines
3.4 KiB
C#
83 lines
3.4 KiB
C#
using System.Buffers.Binary;
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using NResLib;
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namespace ParkanPlayground;
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/// <summary>
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/// MSH-компонент 0x0D: таблица batch.
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/// </summary>
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public static class Msh0x0D
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{
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public const int ElementSize = 20;
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public static List<Batch> ReadComponent(
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FileStream mshFs, NResArchive archive)
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{
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var entry = archive.Files.FirstOrDefault(x => x.FileType == "0D 00 00 00");
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if (entry is null)
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{
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throw new Exception("Archive doesn't contain file (0D)");
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}
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if (entry.ElementSize != ElementSize)
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{
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throw new Exception("Batch table component (0x0D) element size is not 20");
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}
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if (entry.FileLength % entry.ElementSize != 0)
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{
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throw new Exception("Batch table component (0x0D) payload size is not divisible by element size");
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}
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var data = new byte[entry.FileLength];
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mshFs.Seek(entry.OffsetInFile, SeekOrigin.Begin);
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mshFs.ReadExactly(data, 0, data.Length);
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var elementBytes = data.Chunk(ElementSize);
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var elements = elementBytes.Select(x => new Batch(
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(BatchFlags)BinaryPrimitives.ReadUInt16LittleEndian(x.AsSpan(0)),
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BinaryPrimitives.ReadUInt16LittleEndian(x.AsSpan(2)),
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BinaryPrimitives.ReadUInt16LittleEndian(x.AsSpan(4)),
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BinaryPrimitives.ReadUInt16LittleEndian(x.AsSpan(6)),
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BinaryPrimitives.ReadUInt16LittleEndian(x.AsSpan(8)),
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BinaryPrimitives.ReadUInt32LittleEndian(x.AsSpan(0xA)),
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BinaryPrimitives.ReadUInt16LittleEndian(x.AsSpan(0xE)),
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BinaryPrimitives.ReadUInt32LittleEndian(x.AsSpan(0x10)))).ToList();
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return elements;
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}
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/// <summary>Batch 0x0D</summary>
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/// <param name="BatchFlags">[0x00..0x02] Флаги batch. У FParkan: batchFlags.</param>
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/// <param name="MaterialIndex">[0x02..0x04] Индекс material slot, резолвится через WEAR/MAT0 pipeline.</param>
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/// <param name="Opaque4">[0x04..0x06] Opaque поле. Старое локальное имя: TriangleCount; не подтверждено.</param>
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/// <param name="Opaque6">[0x06..0x08] Opaque поле. Сохранять побайтно в writer.</param>
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/// <param name="IndexCount">[0x08..0x0A] Количество индексов в индексном буфере 0x06.</param>
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/// <param name="IndexStart">[0x0A..0x0E] Первый индекс в индексном буфере 0x06.</param>
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/// <param name="Opaque14">[0x0E..0x10] Opaque поле. Старое локальное имя: CountOf03; не подтверждено.</param>
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/// <param name="BaseVertex">[0x10..0x14] Базовая вершина в position stream 0x03. У FParkan: baseVertex.</param>
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public readonly record struct Batch(
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BatchFlags BatchFlags,
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ushort MaterialIndex,
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ushort Opaque4,
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ushort Opaque6,
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ushort IndexCount,
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uint IndexStart,
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ushort Opaque14,
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uint BaseVertex);
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}
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public enum BatchFlags : ushort
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{
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MSH0D_BATCH_SPECIAL_SUBMIT = 1,
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MSH0D_BATCH_INTERSECT_TWO_SIDED = 2,
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MSH0D_BATCH_SPECIAL_PASS_OR_CONDITIONAL = 5,
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MSH0D_BATCH_USE_MATERIAL_PHASE = 8,
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MSH0D_BATCH_SUPPRESS_BATCH = 32,
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MSH0D_BATCH_FORCE_PASS2 = 256,
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MSH0D_BATCH_EMULATE_POINT_LIGHTS = 2048,
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MSH0D_BATCH_HAS_LIGHTMAP_OR_TEXCOORD1 = 8192,
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MSH0D_BATCH_FACING_TEST_EARLY_OUT = 16384,
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} |