Jeroen Bakker
6a5bd812b5
When using the image editor the display channels attribute can become invalid when selecting another image/buffer. This patch will check what display channels are valid and when an invalid channel is selected it will fall back to the color channel. To de-duplicate the code it also introduces a `ED_space_image_get_display_channel_mask` function that will determine the valid bitflags for the display channel of a given `ImBuf`.