Brecht Van Lommel
1fbb1d8cf6
When the materal slot index on mesh faces exceeds the number of slots, rendering would use the last material slot while other operations like baking would fall back to the default material. Now consistently use the last material slot in such cases, since preserving backwards compatibility for rendering seems most important. And if there is one material slot, it's more useful to use that one rather than falling back to the default material.