Creates an [ImageTextureLayered] from an array of [Image]s. The first image decides the width, height, image format and mipmapping setting. The other images must have the same width, height, image format and mipmapping setting. Each [Image] represents one [code]layer[/code]. Replaces the existing [Image] data at the given [code]layer[/code] with this new image. The given [Image] must have the same width, height, image format and mipmapping setting (a [code]bool[/code] value) as the rest of the referenced images. If the image format is unsupported, it will be decompressed and converted to a similar and supported [enum Image.Format]. The update is immediate: synced with the draw.