Issue was caused by couple of circumstances:
- Normal Map node requires tesselated faces to compute tangent space
- All temporary meshes needed for Cycles export were adding to G.main
- Undo pushes would temporary set meshes tessfaces to NULL
- Moving node will cause undo push and tree re-evaluate fr preview
All this leads to threading conflict between preview render and undo
system.
Solved it in way that all temporary meshes are adding to that exact
Main which was passed to Cycles via BlendData. This required couple
of mechanic changes like adding extra parameter to *_add() functions
and adding some *_ex() functions to make it possible RNA adds objects
to Main passed to new() RNA function.
This was tricky to pass Main to RNA function and IMO that's not so
nice to pass main to function, so ended up with such decision:
- Object.to_mesh() will add temp mesh to G.main
- Added Main.meshes.new_from_object() which does the same as to_mesh,
but adds temporary mesh to specified Main.
So now all temporary meshes needed for preview render would be added
to preview_main which does not conflict with undo pushes.
Viewport render shall not be an issue because object sync happens from
main thread in this case.
It could be some issues with final render, but that's not so much
likely to happen, so shall be fine.
Thanks to Brecht for review!
The operator names all show up in the Search button. As such is nicer if they
can all have the main words capitalized.
e.g. "Snap strips" should be "Snap Strips"
"Copy to clipboard" should be "Copy to Clipboard"
This was done with a mix of bash tools, regex, and manual work because I'm too rushed into regex :)
+ fix bge stereo eye separation tooltip
Snapping operator in action editor for grease pencil and mask wasn't implemented. We could probably re-enabled/fix/cleanup more things in this area (e.g. use a custom poll func for operators not supporting gp/mask, instead of silently doing nothing), but this is for after 2.65 imho).
- resolution could become so high that it would wrap around to a negative number, now check for small numbers before doing float division.
- resolution was being calculated in some cases when it already met the clamp value - now this is skipped.
- image space used wrong notifiers.
- image notifier now checks for mask mode before listening to mask edits.
- mask keyframes now draw in the image space.
- use Alt to modify all mask feather at once while dragging.
- copying a multi-user mask from the interface works now.
- show masks when UV editing isnt used, rather then checking editmode (would give some odd/annoying image space header).
- add a fake mask user by default.
- moving points with LMB drag no longer selects them.
