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March 27, 2023 16:27
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シェーダーのPropertiesから定義部分を生成させるやつ
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| using System.Collections.Generic; | |
| using System.IO; | |
| using System.Linq; | |
| using System.Text; | |
| using UnityEditor; | |
| using UnityEngine; | |
| public class ShaderPropertiesGenerator : EditorWindow | |
| { | |
| private Shader targetShader; | |
| private void OnGUI() | |
| { | |
| EditorGUILayout.BeginVertical(); | |
| this.targetShader = (Shader)EditorGUILayout.ObjectField("Target Shader", this.targetShader, typeof(Shader), false); | |
| if (GUILayout.Button("Generate HLSL")) this.ExtractShaderProperties(); | |
| EditorGUILayout.EndVertical(); | |
| } | |
| [MenuItem("Window/Shader Properties Generator")] | |
| public static void ShowWindow() | |
| { | |
| GetWindow<ShaderPropertiesGenerator>("Shader Properties Generator"); | |
| } | |
| private void ExtractShaderProperties() | |
| { | |
| if (this.targetShader == null) | |
| { | |
| Debug.LogError("Please select a shader."); | |
| return; | |
| } | |
| var shaderProperties = new List<ShaderProperty>(); | |
| var propertyCount = ShaderUtil.GetPropertyCount(this.targetShader); | |
| for (var i = 0; i < propertyCount; i++) | |
| { | |
| var propertyName = ShaderUtil.GetPropertyName(this.targetShader, i); | |
| if (!propertyName.StartsWith("_")) continue; | |
| var propertyType = ShaderUtil.GetPropertyType(this.targetShader, i); | |
| var propertyDimension = GetPropertyDimension(propertyType); | |
| var propertyAttributes = this.targetShader.GetPropertyAttributes(i); | |
| if (ShaderUtil.IsShaderPropertyHidden(this.targetShader, i)) continue; | |
| var texturePropertyName = GetTexturePropertyName(propertyAttributes); | |
| shaderProperties.Add(new ShaderProperty(propertyType, propertyName, propertyDimension, texturePropertyName)); | |
| } | |
| this.GenerateHLSLFile(shaderProperties); | |
| } | |
| private void GenerateHLSLFile(List<ShaderProperty> shaderProperties) | |
| { | |
| var shaderPath = AssetDatabase.GetAssetPath(this.targetShader); | |
| var directoryPath = Path.GetDirectoryName(shaderPath); | |
| var fileName = $"{Path.GetFileNameWithoutExtension(shaderPath)}Properties.hlsl"; | |
| var filePath = Path.Combine(directoryPath, fileName); | |
| var maxPropertyNameLength = shaderProperties.Max(x => x.Name.Length); | |
| var sb = new StringBuilder(); | |
| sb.AppendLine("//"); | |
| sb.AppendLine("// This file is generated by ShaderPropertiesGenerator. Do not edit manually."); | |
| sb.AppendLine("//"); | |
| sb.AppendLine(); | |
| sb.AppendLine("#include \"Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl\""); | |
| sb.AppendLine("#include \"Packages/com.unity.render-pipelines.core/ShaderLibrary/UnityInstancing.hlsl\""); | |
| sb.AppendLine(); | |
| // CBUFFER_START and CBUFFER_END | |
| sb.AppendLine("CBUFFER_START(UnityPerMaterial)"); | |
| foreach (var property in shaderProperties) | |
| { | |
| if (property.Type is not (ShaderUtil.ShaderPropertyType.Color or ShaderUtil.ShaderPropertyType.Range or ShaderUtil.ShaderPropertyType.Float or ShaderUtil.ShaderPropertyType.Vector)) continue; | |
| sb.AppendLine($"float{(property.Dimension == 1 ? " " : property.Dimension.ToString())} {property.Name};"); | |
| } | |
| sb.AppendLine(); | |
| foreach (var property in shaderProperties) | |
| { | |
| if (property.Type != ShaderUtil.ShaderPropertyType.TexEnv) continue; | |
| if (!string.IsNullOrEmpty(property.TexturePropertyName)) continue; | |
| sb.AppendLine($"float4 {property.Name}_ST;"); | |
| sb.AppendLine($"float4 {property.Name}_TexelSize;"); | |
| sb.AppendLine($"float4 {property.Name}_MipInfo;"); | |
| sb.AppendLine(); | |
| } | |
| sb.AppendLine(); | |
| sb.AppendLine("CBUFFER_END"); | |
| sb.AppendLine(); | |
| sb.AppendLine(); | |
| // UNITY_DOTS_INSTANCING_START and UNITY_DOTS_INSTANCING_END | |
| sb.AppendLine("#ifdef UNITY_DOTS_INSTANCING_ENABLED"); | |
| sb.AppendLine("UNITY_DOTS_INSTANCING_START(MaterialPropertyMetadata)"); | |
| foreach (var property in shaderProperties) | |
| { | |
| if (property.Type is ShaderUtil.ShaderPropertyType.Color or ShaderUtil.ShaderPropertyType.Range or ShaderUtil.ShaderPropertyType.Float or ShaderUtil.ShaderPropertyType.Vector) | |
| sb.AppendLine($" UNITY_DOTS_INSTANCED_PROP(float{(property.Dimension == 1 ? " " : property.Dimension.ToString())}, {property.Name})"); | |
| } | |
| sb.AppendLine("UNITY_DOTS_INSTANCING_END(MaterialPropertyMetadata)"); | |
| sb.AppendLine(); | |
| foreach (var property in shaderProperties) | |
| { | |
| if (property.Type is not (ShaderUtil.ShaderPropertyType.Color or ShaderUtil.ShaderPropertyType.Range or ShaderUtil.ShaderPropertyType.Float)) continue; | |
| var padding = new string(' ', maxPropertyNameLength - property.Name.Length); | |
| sb.AppendLine($"#define {property.Name} {padding}UNITY_ACCESS_DOTS_INSTANCED_PROP_WITH_DEFAULT(float{(property.Dimension == 1 ? " " : property.Dimension.ToString())}, {property.Name})"); | |
| } | |
| sb.AppendLine("#endif"); | |
| sb.AppendLine(); | |
| // TEXTURE2D and SAMPLER | |
| foreach (var property in shaderProperties) | |
| { | |
| if (property.Type != ShaderUtil.ShaderPropertyType.TexEnv) continue; | |
| if (property.TexturePropertyName == null) | |
| { | |
| var padding = new string(' ', maxPropertyNameLength - property.Name.Length); | |
| sb.AppendLine($"TEXTURE2D({property.Name}); {padding}SAMPLER(sampler{property.Name});"); | |
| } | |
| else | |
| { | |
| sb.AppendLine($"TEXTURE2D({property.Name});"); | |
| } | |
| } | |
| sb.AppendLine("SAMPLER(sampler_linear_clamp);"); | |
| File.WriteAllText(filePath, sb.ToString()); | |
| AssetDatabase.Refresh(); | |
| Debug.Log($"Generated HLSL file: {filePath}"); | |
| } | |
| private static int GetPropertyDimension(ShaderUtil.ShaderPropertyType type) | |
| { | |
| return type switch | |
| { | |
| ShaderUtil.ShaderPropertyType.Color => 4, | |
| ShaderUtil.ShaderPropertyType.Vector => 4, | |
| ShaderUtil.ShaderPropertyType.TexEnv => 2, | |
| _ => 1 | |
| }; | |
| } | |
| private static string GetTexturePropertyName(string[] attributes) | |
| { | |
| foreach (var attribute in attributes) | |
| { | |
| if (!attribute.StartsWith("TextureSampler(")) continue; | |
| var startIndex = "TextureSampler(".Length; | |
| var endIndex = attribute.LastIndexOf(")"); | |
| if (endIndex <= startIndex) break; | |
| return attribute.Substring(startIndex, endIndex - startIndex); | |
| } | |
| return null; | |
| } | |
| private record ShaderProperty(ShaderUtil.ShaderPropertyType Type, string Name, int Dimension, string TexturePropertyName = null) | |
| { | |
| public ShaderUtil.ShaderPropertyType Type { get; } = Type; | |
| public string Name { get; } = Name; | |
| public int Dimension { get; } = Dimension; | |
| public string TexturePropertyName { get; } = TexturePropertyName; | |
| } | |
| } |
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プロパティのアトリビュートに[TextureSampler(_MainTex)]とかって書くと、Samplerは生成しなくなる。