How to add secondary textures settings to Sprite Atlas through C#?

Unity Engine
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1

Hello!
I have an automated system (Unity 2020.2.0f1) where I pick a bunch of separated sprites with a secondary Normal Map, and I add them to a generated SpriteAtlas asset. Works good, but the normal map needs to have the sRGB option uncheked.
In the editor, this is done through the Secondary Settings panel:

7477580--919442--upload_2021-9-7_11-43-6.png
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However, since this is an editor script, I need to add this secondary settings through C#, but I don’t find any method nor documentation to do this.
What I do right now is:

atlas.Add(spriteFiles.ToArray());

//This texture settings are only for the primary texture. Is there a way of doing the same to the secondary Normal Map?
        SpriteAtlasTextureSettings newTextSettings = new SpriteAtlasTextureSettings();
        newTextSettings.filterMode = FilterMode.Point;
        newTextSettings.sRGB = true;     
        atlas.SetTextureSettings(newTextSettings);

        TextureImporterPlatformSettings newPlatformSettings = new TextureImporterPlatformSettings();
        newPlatformSettings.textureCompression = TextureImporterCompression.Uncompressed;
        atlas.SetPlatformSettings(newPlatformSettings);

         AssetDatabase.CreateAsset(atlas, atlasPath);
        AssetDatabase.SaveAssets();

Is not the biggest of the deals (the script already lifts a lot of work for me), but I would like to spare me some repetitive clicks.

7477580--919439--upload_2021-9-7_11-42-52.png
7477580--919439--upload_2021-9-7_11-42-52.png1920×1080 341 KB

2

in this code you don’t seem to be accessing SpriteAtlas object, but SpriteAtlasAsset.
SpriteAtlas does not have SetTextureSettings and SetPlatformSettings.

it makes sense to show your entire code, not just a misleading part of it.

3

“atlas” is a SpriteAtlas. SetTextureSettings and SetPlatformSettings come from Sprite Atlas Extensions.

7480295--919868--upload_2021-9-8_11-58-38.png

4

Ah ok right, it’s an editor-only thing. I apologize then, this thing really has documentation all over the place.

5

Did you find a solution to this? Seems the only way to do it is SpriteAtlasExtensions.SetSecondaryColorSpace() which is internal.