safety fixes, was one case where it was still using get_ibuf instead of
acquire/release_ibuf, this is required for render and compositing results
which are modified by other threads.
* Sequence speed effect was functional in theory, but very difficult to actually use.
* Now the effect works as follows:
- "Speed Factor" (formerly "speed fade") controls the current speed of the sequence (can be animated).
- "Use as speed" (formerly "f-curve velocity") is now the default behavior so that the "speed effect" by default changes the "speed" of the sequence.
- "Multiply Speed" (formerly "global speed") is a scale factor that's applied to the calculated frame (can't be animated).
- Without animation "Speed Factor" and "Multiply Speed" work exactly the same (in this case "multiply speed" could perhaps be disabled in ui, but currently there's no easy way to check this).
- If "Use as speed" is not checked the effect simply remaps the current frame to the given "Frame Number" (can be animated).
- "Scale to length" (formerly "f-curve compress y")scales "Frame numbers" from 0.0-1.0 to the length of the target strip to allow easy animation.
* Tooltips added for all values and options.
* Code for frame blending was nowhere to be seen, so I commented the option out from ui.
* This should fix at least bugs #20979 and #21309.
Reported by Roland Kramer
There was already code to prevent visibility toggle through restrict column from working when in edit mode. Reshuffled
code somewhat so it works also for object operations in outliner. Also ensure operator poll for visibility and selectability toggle
checks object is not in edit mode. So this also works for selectability toggling, so no more toggling when in edit mode - it's confusing otherwise.
Added notifier and handling for it for renderability toggle in outliner. No edit mode restriction here.
* The cache was reset almost constantly because smoke didn't save the first frame into cache. Although not necessary for smoke, it's vital to pointcache.
* Added info message to smoke cache panel for non saved files.
* Now smoke also only updates with a framestep of 1, so that scrubbing the timeline doesn't mess up the simulation.
* Among other things fixes report #23731.
* The existence of cached frames was checked each frame causing hundreds of disk operations per frame update.
* Pointcache now keeps an updated array of the cached frames for fast "frame exists in cache" queries.
* This fix also speeds up some other pointcache operations nicely.
(2 fcurves accessing the same data), this should be handled by the units system but for now disabling this means we don't have to deal with animated angle later on.
note: durian files didnt use animated angle anywhere.
