using UnityEditor.ShaderGraph; using UnityEngine; using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using UnityEditor; using UnityEditor.Experimental.AssetImporters; using UnityEditor.ShaderGraph.Drawing; namespace UnityEditor.ShaderGraph { [ScriptedImporter(16, ShaderGraphExtension)] public class ShaderGraphImporter : ScriptedImporter { public const string ShaderGraphExtension = "shadergraph"; const string k_ErrorShader = @" Shader ""Hidden/GraphErrorShader2"" { SubShader { Pass { CGPROGRAM #pragma vertex vert #pragma fragment frag #pragma target 2.0 #pragma multi_compile _ UNITY_SINGLE_PASS_STEREO STEREO_INSTANCING_ON STEREO_MULTIVIEW_ON #include ""UnityCG.cginc"" struct appdata_t { float4 vertex : POSITION; UNITY_VERTEX_INPUT_INSTANCE_ID }; struct v2f { float4 vertex : SV_POSITION; UNITY_VERTEX_OUTPUT_STEREO }; v2f vert (appdata_t v) { v2f o; UNITY_SETUP_INSTANCE_ID(v); UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o); o.vertex = UnityObjectToClipPos(v.vertex); return o; } fixed4 frag (v2f i) : SV_Target { return fixed4(1,0,1,1); } ENDCG } } Fallback Off }"; public override void OnImportAsset(AssetImportContext ctx) { var oldShader = AssetDatabase.LoadAssetAtPath(ctx.assetPath); if (oldShader != null) ShaderUtil.ClearShaderErrors(oldShader); List configuredTextures; string path = ctx.assetPath; var sourceAssetDependencyPaths = new List(); var text = GetShaderText(path, out configuredTextures, sourceAssetDependencyPaths); var shader = ShaderUtil.CreateShaderAsset(text); EditorMaterialUtility.SetShaderDefaults( shader, configuredTextures.Where(x => x.modifiable).Select(x => x.name).ToArray(), configuredTextures.Where(x => x.modifiable).Select(x => EditorUtility.InstanceIDToObject(x.textureId) as Texture).ToArray()); EditorMaterialUtility.SetShaderNonModifiableDefaults( shader, configuredTextures.Where(x => !x.modifiable).Select(x => x.name).ToArray(), configuredTextures.Where(x => !x.modifiable).Select(x => EditorUtility.InstanceIDToObject(x.textureId) as Texture).ToArray()); ctx.AddObjectToAsset("MainAsset", shader); ctx.SetMainObject(shader); foreach (var sourceAssetDependencyPath in sourceAssetDependencyPaths.Distinct()) ctx.DependsOnSourceAsset(sourceAssetDependencyPath); } internal static string GetShaderText(string path, out List configuredTextures, List sourceAssetDependencyPaths) { string shaderString = null; var shaderName = Path.GetFileNameWithoutExtension(path); try { var textGraph = File.ReadAllText(path, Encoding.UTF8); var graph = JsonUtility.FromJson(textGraph); graph.LoadedFromDisk(); if (!string.IsNullOrEmpty(graph.path)) shaderName = graph.path + "/" + shaderName; shaderString = graph.GetShader(shaderName, GenerationMode.ForReals, out configuredTextures, sourceAssetDependencyPaths); if (sourceAssetDependencyPaths != null) { foreach (var node in graph.GetNodes()) node.GetSourceAssetDependencies(sourceAssetDependencyPaths); } } catch (Exception) { configuredTextures = new List(); // ignored } return shaderString ?? k_ErrorShader.Replace("Hidden/GraphErrorShader2", shaderName); } internal static string GetShaderText(string path, out List configuredTextures) { return GetShaderText(path, out configuredTextures, null); } } }