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path: root/src/Ryujinx.Graphics.Gpu/Shader/DiskCache/ShaderBinarySerializer.cs
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using Ryujinx.Common;
using Ryujinx.Common.Memory;
using Ryujinx.Graphics.GAL;
using Ryujinx.Graphics.Shader;
using Ryujinx.Graphics.Shader.Translation;
using System.Collections.Generic;
using System.IO;

namespace Ryujinx.Graphics.Gpu.Shader.DiskCache
{
    static class ShaderBinarySerializer
    {
        public static byte[] Pack(ShaderSource[] sources)
        {
            using MemoryStream output = MemoryStreamManager.Shared.GetStream();

            output.Write(sources.Length);

            foreach (ShaderSource source in sources)
            {
                output.Write((int)source.Stage);
                output.Write(source.BinaryCode.Length);
                output.Write(source.BinaryCode);
            }

            return output.ToArray();
        }

        public static ShaderSource[] Unpack(CachedShaderStage[] stages, byte[] code)
        {
            using MemoryStream input = new(code);
            using BinaryReader reader = new(input);

            List<ShaderSource> output = new();

            int count = reader.ReadInt32();

            for (int i = 0; i < count; i++)
            {
                ShaderStage stage = (ShaderStage)reader.ReadInt32();
                int binaryCodeLength = reader.ReadInt32();
                byte[] binaryCode = reader.ReadBytes(binaryCodeLength);

                output.Add(new ShaderSource(binaryCode, stage, TargetLanguage.Spirv));
            }

            return output.ToArray();
        }
    }
}