listTextureChannels

Returns a list of TextureChannels used by the given texture. Determination is based only on the role of the textures, e.g. a texture used for the occlusionTexture will have (at least) a red channel in use. See getTextureChannelMask for bitmask alternative.

Example:

const channels = listTextureChannels(texture);
if (channels.includes(TextureChannel.R)) {
  console.log('texture red channel used');
}