92 lines
3.8 KiB
C#
92 lines
3.8 KiB
C#
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using RefreshCS;
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using System;
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using System.IO;
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using System.Runtime.InteropServices;
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namespace Nerfed.Runtime.Graphics;
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/// <summary>
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/// Compute pipelines perform arbitrary parallel processing on input data.
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/// </summary>
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public class ComputePipeline : RefreshResource
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{
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protected override Action<IntPtr, IntPtr> ReleaseFunction => Refresh.Refresh_ReleaseComputePipeline;
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public uint ReadOnlyStorageTextureCount { get; }
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public uint ReadOnlyStorageBufferCount { get; }
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public uint ReadWriteStorageTextureCount { get; }
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public uint ReadWriteStorageBufferCount { get; }
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public uint UniformBufferCount { get; }
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public ComputePipeline(
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GraphicsDevice device,
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string filePath,
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string entryPointName,
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in ComputePipelineCreateInfo computePipelineCreateInfo
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) : base(device)
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{
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using FileStream stream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
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Handle = CreateFromStream(device, stream, entryPointName, computePipelineCreateInfo);
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ReadOnlyStorageTextureCount = computePipelineCreateInfo.ReadOnlyStorageTextureCount;
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ReadOnlyStorageBufferCount = computePipelineCreateInfo.ReadOnlyStorageBufferCount;
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ReadWriteStorageTextureCount = computePipelineCreateInfo.ReadWriteStorageTextureCount;
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ReadWriteStorageBufferCount = computePipelineCreateInfo.ReadWriteStorageBufferCount;
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UniformBufferCount = computePipelineCreateInfo.UniformBufferCount;
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}
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public ComputePipeline(
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GraphicsDevice device,
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Stream stream,
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string entryPointName,
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in ComputePipelineCreateInfo computePipelineCreateInfo
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) : base(device)
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{
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Handle = CreateFromStream(device, stream, entryPointName, computePipelineCreateInfo);
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ReadOnlyStorageTextureCount = computePipelineCreateInfo.ReadOnlyStorageTextureCount;
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ReadOnlyStorageBufferCount = computePipelineCreateInfo.ReadOnlyStorageBufferCount;
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ReadWriteStorageTextureCount = computePipelineCreateInfo.ReadWriteStorageTextureCount;
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ReadWriteStorageBufferCount = computePipelineCreateInfo.ReadWriteStorageBufferCount;
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UniformBufferCount = computePipelineCreateInfo.UniformBufferCount;
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}
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private static unsafe nint CreateFromStream(
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GraphicsDevice device,
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Stream stream,
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string entryPointName,
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in ComputePipelineCreateInfo computePipelineCreateInfo
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) {
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byte* bytecodeBuffer = (byte*) NativeMemory.Alloc((nuint) stream.Length);
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Span<byte> bytecodeSpan = new Span<byte>(bytecodeBuffer, (int) stream.Length);
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stream.ReadExactly(bytecodeSpan);
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Refresh.ComputePipelineCreateInfo refreshPipelineCreateInfo;
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refreshPipelineCreateInfo.Code = bytecodeBuffer;
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refreshPipelineCreateInfo.CodeSize = (nuint) stream.Length;
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refreshPipelineCreateInfo.EntryPointName = entryPointName;
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refreshPipelineCreateInfo.Format = (Refresh.ShaderFormat) computePipelineCreateInfo.ShaderFormat;
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refreshPipelineCreateInfo.ReadOnlyStorageTextureCount = computePipelineCreateInfo.ReadOnlyStorageTextureCount;
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refreshPipelineCreateInfo.ReadOnlyStorageBufferCount = computePipelineCreateInfo.ReadOnlyStorageBufferCount;
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refreshPipelineCreateInfo.ReadWriteStorageTextureCount = computePipelineCreateInfo.ReadWriteStorageTextureCount;
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refreshPipelineCreateInfo.ReadWriteStorageBufferCount = computePipelineCreateInfo.ReadWriteStorageBufferCount;
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refreshPipelineCreateInfo.UniformBufferCount = computePipelineCreateInfo.UniformBufferCount;
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refreshPipelineCreateInfo.ThreadCountX = computePipelineCreateInfo.ThreadCountX;
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refreshPipelineCreateInfo.ThreadCountY = computePipelineCreateInfo.ThreadCountY;
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refreshPipelineCreateInfo.ThreadCountZ = computePipelineCreateInfo.ThreadCountZ;
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IntPtr computePipelineHandle = Refresh.Refresh_CreateComputePipeline(
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device.Handle,
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refreshPipelineCreateInfo
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);
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if (computePipelineHandle == nint.Zero)
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{
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throw new Exception("Could not create compute pipeline!");
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}
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NativeMemory.Free(bytecodeBuffer);
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return computePipelineHandle;
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}
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}
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