In user testing, the "Bake All" operator overwriting the "Col" layer was
blowing away too much manual shading, reducing the usefulness of the
feature severely. This changes us to using the "autocolor" layer and
making it a somewhat ephemeral coloring layer. Any "autocolor" layer
generated by the exporter should be removed when the export finishes.
Otherwise, it should persist.
You can now bake "finalized" lighting to either vertex colors or a
lightmap image. This can be done either from the toolbox or from the
individual lightmap modifier. The purpose of doing this is to allow the
artist to opt-into a workflow where they can chose when to incur the
performance penalty, instead of on export. The downside is that the
artist now has to manually click a bake button. But, for some Ages,
especially "finished" ones receiving small updates, there is no need to
rebake the lighting each export.
This is the beginning of a workflow loop to (hopefully) improve the
performance of exporting Ages with expensive lighting. This commit
allows you to generate the autocolor layer in the Korman UI and rename
it to `col` to prevent needless re-baking.
Generating lightmap previews in edit mode is nonsense. Also, there is
some issue in blender with changing the image assignment programatically
while in edit mode, so it's best to just disallow this entirely.
This includes changes to the light baking code to ensure that we don't
bake runtime lights. This code has several places it could be optimized in
the future when we have larger ages to test against.
This should make the average age look a little bit better. I hope... If
you want to get rid of this crappy lighting, create a vertex color layer.
Or, better yet, add a stupid lightmap modifier!
Still lots of considerations:
- Need to make faux lightgroups to avoid baking Plasma RT lights
- Still need to bake vertex colors
- Still need to export Plasma RT lights (D'oh!)
But, this is definitely a step in the right direction!
