TextureImportInstructions?

Unity Engine
1

Hi guys,
I want to create a new Packer Policy to be sure I don’t have any atlases bigger than 1024.

In the documentation, there is the code for the DefaultSpritePolicy and there is a part saying :
TextureImportInstructions ins = new TextureImportInstructions();
ti.ReadTextureImportInstructions(ins, target);

I have an error with TextureImportInstructions, it looks like it doesn’t exist anymore in Unity 5, is it possible? I can’t find anything about the SpritePolicy, it looks like everybody else are just using the Default one.

Thanks!

2

Ok, for anyone who’s still struggling with this, the solution is pretty simple, but as of now undocumented.

Replace

foreach (int instanceID in textureImporterInstanceIDs)
        {
            TextureImporter ti = EditorUtility.InstanceIDToObject(instanceID) as TextureImporter;

            TextureImportInstructions ins = new TextureImportInstructions();
            ti.ReadTextureImportInstructions(ins, target);

            TextureImporterSettings tis = new TextureImporterSettings();
            ti.ReadTextureSettings(tis);

            Sprite[] sprites = AssetDatabase.LoadAllAssetRepresentationsAtPath(ti.assetPath).Select(x => x as Sprite).Where(x => x != null).ToArray();
            foreach (Sprite sprite in sprites)
            {
                Entry entry = new Entry();
                entry.sprite = sprite;
                entry.settings.format = ins.desiredFormat;
                entry.settings.usageMode = ins.usageMode;
                entry.settings.colorSpace = ins.colorSpace;
                entry.settings.compressionQuality = ins.compressionQuality;
                entry.settings.filterMode = Enum.IsDefined(typeof(FilterMode), ti.filterMode) ? ti.filterMode : FilterMode.Bilinear;
                entry.settings.maxWidth = 2048;
                entry.settings.maxHeight = 2048;
                entry.settings.generateMipMaps = ti.mipmapEnabled;
                if (ti.mipmapEnabled)
                    entry.settings.paddingPower = kDefaultPaddingPower;
                entry.atlasName = ParseAtlasName(ti.spritePackingTag);
                entry.packingMode = GetPackingMode(ti.spritePackingTag, tis.spriteMeshType);
                entry.anisoLevel = ti.anisoLevel;

                entries.Add(entry);
            }

            Resources.UnloadAsset(ti);
        }

with

foreach (int instanceID in textureImporterInstanceIDs)
        {
            TextureImporter ti = EditorUtility.InstanceIDToObject(instanceID) as TextureImporter;

            TextureFormat textureFormat;
            ColorSpace colorSpace;
            int compressionQuality;
            ti.ReadTextureImportInstructions(target, out textureFormat, out colorSpace, out compressionQuality);
          
            TextureImporterSettings tis = new TextureImporterSettings();
            ti.ReadTextureSettings(tis);
          
            Sprite[] sprites = AssetDatabase.LoadAllAssetRepresentationsAtPath(ti.assetPath).Select(x => x as Sprite).Where(x => x != null).ToArray();
            foreach (Sprite sprite in sprites)
            {
                Entry entry = new Entry();
                entry.sprite = sprite;
                entry.settings.format = textureFormat;
                entry.settings.colorSpace = colorSpace;
                entry.settings.compressionQuality = compressionQuality;
                entry.settings.filterMode = Enum.IsDefined(typeof(FilterMode), ti.filterMode) ? ti.filterMode : FilterMode.Bilinear;
                entry.settings.maxWidth = 2048;
                entry.settings.maxHeight = 2048;
                entry.settings.generateMipMaps = ti.mipmapEnabled;
                if (ti.mipmapEnabled)
                    entry.settings.paddingPower = kDefaultPaddingPower;
                entry.atlasName = ParseAtlasName(ti.spritePackingTag);
                entry.packingMode = GetPackingMode(ti.spritePackingTag, tis.spriteMeshType);
                entry.anisoLevel = ti.anisoLevel;
              
                entries.Add(entry);
            }
          
            Resources.UnloadAsset(ti);
        }

The ReadTextureImportInstructions method still exists, but doesn’t take TextureImportInstructions (as that class no longer exists), so I substituted the target supplied by OnGroupAtlases instead. Also, usageMode is a property that vanished, so I omitted that line. The above seems to work identically to the defaultPackingPolicy when selected in the Sprite Packer window.

1 Like