66 lines
1.8 KiB
C#
66 lines
1.8 KiB
C#
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 MoonWorks.Graphics
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{
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/// <summary>
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/// Shader modules expect input in Refresh bytecode format.
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/// </summary>
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public class Shader : RefreshResource
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{
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protected override Action<IntPtr, IntPtr> ReleaseFunction => Refresh.Refresh_ReleaseShader;
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public unsafe Shader(
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GraphicsDevice device,
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string filePath,
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string entryPointName,
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ShaderStage shaderStage,
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ShaderFormat shaderFormat
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) : base(device)
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{
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using var stream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
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Handle = CreateFromStream(device, stream, entryPointName, shaderStage, shaderFormat);
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}
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public unsafe Shader(
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GraphicsDevice device,
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Stream stream,
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string entryPointName,
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ShaderStage shaderStage,
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ShaderFormat shaderFormat
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) : base(device)
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{
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Handle = CreateFromStream(device, stream, entryPointName, shaderStage, shaderFormat);
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}
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private static unsafe IntPtr CreateFromStream(
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GraphicsDevice device,
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Stream stream,
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string entryPointName,
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ShaderStage shaderStage,
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ShaderFormat shaderFormat
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) {
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var bytecodeBuffer = NativeMemory.Alloc((nuint) stream.Length);
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var bytecodeSpan = new Span<byte>(bytecodeBuffer, (int) stream.Length);
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stream.ReadExactly(bytecodeSpan);
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Refresh.ShaderCreateInfo shaderCreateInfo;
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shaderCreateInfo.CodeSize = (nuint) stream.Length;
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shaderCreateInfo.Code = (byte*) bytecodeBuffer;
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shaderCreateInfo.EntryPointName = entryPointName;
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shaderCreateInfo.Stage = (Refresh.ShaderStage) shaderStage;
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shaderCreateInfo.Format = (Refresh.ShaderFormat) shaderFormat;
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var shaderModule = Refresh.Refresh_CreateShader(
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device.Handle,
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shaderCreateInfo
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);
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NativeMemory.Free(bytecodeBuffer);
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return shaderModule;
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}
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}
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}
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