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103 行
3.3 KiB

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;
[ScriptedImporter(1, "shadergraph")]
public class ShaderGraphImporter : ScriptedImporter
{
private string 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<Shader>(ctx.assetPath);
if (oldShader != null)
ShaderUtil.ClearShaderErrors(oldShader);
List<PropertyCollector.TextureInfo> configuredTextures;
var text = GetShaderText<MaterialGraph>(ctx.assetPath, out configuredTextures);
if (text == null)
text = errorShader;
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);
}
private static string GetShaderText<T>(string path, out List<PropertyCollector.TextureInfo> configuredTextures) where T : IShaderGraph
{
try
{
var textGraph = File.ReadAllText(path, Encoding.UTF8);
var graph = JsonUtility.FromJson<T>(textGraph);
graph.LoadedFromDisk();
var name = Path.GetFileNameWithoutExtension(path);
var shaderString = graph.GetShader(string.Format("graphs/{0}", name), GenerationMode.ForReals, out configuredTextures);
Debug.Log(shaderString);
return shaderString;
}
catch (Exception)
{
// ignored
}
configuredTextures = new List<PropertyCollector.TextureInfo>();
return null;
}
}