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Texture2DArray importer for Unity
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| using System.IO; | |
| using UnityEngine; | |
| using UnityEditor; | |
| using UnityEditor.AssetImporters; | |
| class TextureArrayJson | |
| { | |
| public int SerializedVersion; | |
| public Texture2D Source; | |
| } | |
| [ScriptedImporter(1, FileExtension)] | |
| class TextureArrayImporter : ScriptedImporter | |
| { | |
| const string FileExtension = "texarray"; | |
| const string MenuName = "Assets/Create/Texture Array Importer"; | |
| [MenuItem(MenuName)] | |
| static void CreateTextureArrayImporter() | |
| { | |
| var path = AssetDatabase.GetAssetPath(Selection.activeObject); | |
| var fileName = Path.GetFileNameWithoutExtension(path) + "." + FileExtension; | |
| var json = new TextureArrayJson(); | |
| json.SerializedVersion = 1; | |
| json.Source = Selection.activeObject as Texture2D; | |
| ProjectWindowUtil.CreateAssetWithContent(fileName, EditorJsonUtility.ToJson(json)); | |
| } | |
| [MenuItem(MenuName, true)] | |
| static bool ValidateSelectedObject() | |
| { | |
| return Selection.activeObject is Texture2D; | |
| } | |
| public override void OnImportAsset(AssetImportContext ctx) | |
| { | |
| var json = new TextureArrayJson(); | |
| EditorJsonUtility.FromJsonOverwrite(File.ReadAllText(ctx.assetPath), json); | |
| if (json.Source == null || !json.Source.isReadable) | |
| { | |
| ctx.LogImportError("json.Source == null || !json.Source.isReadable"); | |
| return; | |
| } | |
| var srcPath = AssetDatabase.GetAssetPath(json.Source); | |
| ctx.DependsOnArtifact(srcPath); | |
| int numSlices; | |
| int sliceSize; | |
| Vector2Int direction; | |
| if (json.Source.width < json.Source.height) | |
| { | |
| numSlices = json.Source.height / json.Source.width; | |
| direction = new Vector2Int(0, 1); | |
| sliceSize = json.Source.height / numSlices; | |
| } | |
| else | |
| { | |
| numSlices = json.Source.width / json.Source.height; | |
| direction = new Vector2Int(1, 0); | |
| sliceSize = json.Source.width / numSlices; | |
| } | |
| var sourceIsLinear = false; | |
| if (GetAtPath(srcPath) is TextureImporter texImporter) | |
| { | |
| sourceIsLinear = !texImporter.sRGBTexture; | |
| } | |
| var srcPixels = json.Source.GetPixels(); | |
| var texArr = new Texture2DArray(sliceSize, sliceSize, numSlices, json.Source.format, 0 < json.Source.mipmapCount, sourceIsLinear); | |
| texArr.wrapMode = json.Source.wrapMode; | |
| texArr.filterMode = json.Source.filterMode; | |
| for (var i = 0; i < numSlices; ++i) | |
| { | |
| var dstPixels = texArr.GetPixels(i); | |
| for (var y = 0; y < sliceSize; ++y) | |
| { | |
| for (var x = 0; x < sliceSize; ++x) | |
| { | |
| var srcX = direction.x * sliceSize * i + x; | |
| var srcY = direction.y * sliceSize * i + y; | |
| dstPixels[x + y * sliceSize] = srcPixels[srcX + srcY * json.Source.width]; | |
| } | |
| } | |
| texArr.SetPixels(dstPixels, i); | |
| } | |
| texArr.Apply(true); | |
| ctx.AddObjectToAsset("Imported Texture", texArr); | |
| ctx.SetMainObject(texArr); | |
| } | |
| } |
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Good job.