Inside
public static AtlasRegion ToAtlasRegionPMAClone (this Sprite s, Shader shader, TextureFormat textureFormat = SpineTextureFormat, bool mipmaps = UseMipMaps, Material materialPropertySource = null)
var tex = s.ToTexture(textureFormat, mipmaps);
tex.ApplyPMA(true);
and
public static AtlasRegion ToAtlasRegionPMAClone (this Texture2D t, Shader shader, TextureFormat textureFormat = SpineTextureFormat, bool mipmaps = UseMipMaps, Material materialPropertySource = null)
var newTexture = t.GetClone(textureFormat, mipmaps);
newTexture.ApplyPMA(true);