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141 行
4.8 KiB
141 行
4.8 KiB
using UnityEditor.ShaderGraph;
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using UnityEngine;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Text;
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using UnityEditor;
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using UnityEditor.Experimental.AssetImporters;
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using UnityEditor.ShaderGraph.Drawing;
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[ScriptedImporter(15, ShaderGraphExtension)]
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public class ShaderGraphImporter : ScriptedImporter
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{
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public const string ShaderGraphExtension = "shadergraph";
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const string k_ErrorShader = @"
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Shader ""Hidden/GraphErrorShader2""
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{
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SubShader
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{
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Pass
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{
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#pragma target 2.0
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#pragma multi_compile _ UNITY_SINGLE_PASS_STEREO STEREO_INSTANCING_ON STEREO_MULTIVIEW_ON
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#include ""UnityCG.cginc""
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struct appdata_t {
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float4 vertex : POSITION;
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UNITY_VERTEX_INPUT_INSTANCE_ID
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};
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struct v2f {
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float4 vertex : SV_POSITION;
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UNITY_VERTEX_OUTPUT_STEREO
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};
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v2f vert (appdata_t v)
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{
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v2f o;
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UNITY_SETUP_INSTANCE_ID(v);
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UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
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o.vertex = UnityObjectToClipPos(v.vertex);
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return o;
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}
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fixed4 frag (v2f i) : SV_Target
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{
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return fixed4(1,0,1,1);
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}
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ENDCG
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}
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}
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Fallback Off
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}";
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public override void OnImportAsset(AssetImportContext ctx)
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{
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var oldShader = AssetDatabase.LoadAssetAtPath<Shader>(ctx.assetPath);
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if (oldShader != null)
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ShaderUtil.ClearShaderErrors(oldShader);
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List<PropertyCollector.TextureInfo> configuredTextures;
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string path = ctx.assetPath;
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string shaderString = null;
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var sourceAssetDependencyPaths = new List<string>();
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var shaderName = Path.GetFileNameWithoutExtension(path);
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try
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{
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var textGraph = File.ReadAllText(path, Encoding.UTF8);
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var graph = JsonUtility.FromJson<MaterialGraph>(textGraph);
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graph.LoadedFromDisk();
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if (!string.IsNullOrEmpty(graph.path))
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shaderName = graph.path + "/" + shaderName;
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shaderString = graph.GetShader(shaderName, GenerationMode.ForReals, out configuredTextures, sourceAssetDependencyPaths);
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foreach (var node in graph.GetNodes<AbstractMaterialNode>())
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node.GetSourceAssetDependencies(sourceAssetDependencyPaths);
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}
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catch (Exception)
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{
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configuredTextures = new List<PropertyCollector.TextureInfo>();
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// ignored
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}
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var text = shaderString ?? k_ErrorShader.Replace("Hidden/GraphErrorShader2", shaderName);
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var shader = ShaderUtil.CreateShaderAsset(text);
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EditorMaterialUtility.SetShaderDefaults(
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shader,
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configuredTextures.Where(x => x.modifiable).Select(x => x.name).ToArray(),
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configuredTextures.Where(x => x.modifiable).Select(x => EditorUtility.InstanceIDToObject(x.textureId) as Texture).ToArray());
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EditorMaterialUtility.SetShaderNonModifiableDefaults(
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shader,
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configuredTextures.Where(x => !x.modifiable).Select(x => x.name).ToArray(),
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configuredTextures.Where(x => !x.modifiable).Select(x => EditorUtility.InstanceIDToObject(x.textureId) as Texture).ToArray());
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ctx.AddObjectToAsset("MainAsset", shader);
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ctx.SetMainObject(shader);
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foreach (var sourceAssetDependencyPath in sourceAssetDependencyPaths.Distinct())
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ctx.DependsOnSourceAsset(sourceAssetDependencyPath);
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}
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}
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class ShaderGraphAssetPostProcessor : AssetPostprocessor
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{
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static void RegisterShaders(string[] paths)
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{
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foreach (var path in paths)
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{
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if (!path.EndsWith(ShaderGraphImporter.ShaderGraphExtension, StringComparison.InvariantCultureIgnoreCase))
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continue;
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var mainObj = AssetDatabase.LoadMainAssetAtPath(path);
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if (mainObj is Shader)
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ShaderUtil.RegisterShader((Shader)mainObj);
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var objs = AssetDatabase.LoadAllAssetRepresentationsAtPath(path);
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foreach (var obj in objs)
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{
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if (obj is Shader)
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ShaderUtil.RegisterShader((Shader)obj);
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}
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}
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}
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static void OnPostprocessAllAssets(string[] importedAssets, string[] deletedAssets, string[] movedAssets, string[] movedFromAssetPaths)
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{
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MaterialGraphEditWindow[] windows = Resources.FindObjectsOfTypeAll<MaterialGraphEditWindow>();
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foreach (var matGraphEditWindow in windows)
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{
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matGraphEditWindow.forceRedrawPreviews = true;
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}
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RegisterShaders(importedAssets);
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}
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}
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