when specific circumstances are met.
Mainly issue was caused by checking ImBuf pointers, which used to fail
when some post-processing flags are changed. This was caused by the
fact that freeing old ImBuf and allocating new one could lead to new
ImBuf have the same pointer as previous one, which confuses cache.
There was some bad recursion introduced recently that caused crashes
when a Material node is the same material as the material itself (e.g.,
if Material.001 has a node with Material.001).
This commit attempt to correct this by keeping track of the material
at the root of the node tree, and doesn't recurse further if it
encounters it again within the nodetree.
Joshua, please review!
There were some crashes discovered in some circumstances of using
color management within the clip editor which ended up some refactoring
of color management cache.
Switch from global movie cache instance to per-image buffer instances
This only means keys for color managed buffers could be much simpier
and that look up would happen much faster in there're lots of frames
cached. Memory limiter stuff is still global for all color management
and in fact it's also shared with movie clip cache .
This allowed to get rid of original image buffer stored in cache
key and allowed to easily remove all display buffers when source
image buffer is being freed. This was main culptrit leading to
crashes.
Additional changes:
- Add option to make moviecache verbose. If DEBUG_MESSAGES is
defined in moviecache.c detailed logs would be printed to the
console.
- Movie caches are now named which helps reading debug messages.
- Improved a bit behavior of cache element removing when buffer
overflows on adding new display buffer and there're frames from
movie clip.
Forgot DNA needed stable names... :/ Correct spelling would involve keeping the old one for load code anyway, so better live with incorrect spelling here.
This creates a list of splines to be rasterized in nitExecution which
is being called from main thread. This should resolve possible threading
issues discovered in tomato branch.
Replace pseudo-LRU approach of determining which buffer
to remove when running out of space allowed for cache
with approach which would remove the frame which is most
far away from newly added frame.
This is still a bit tricky because it's impossible to
distinguish which frame to delete in situation of:
CCCC...CC
^
it's either user wants to extend left segment of cached
frames and buffers from right segment should be removed
or he wants to join this two segments and in that case
buffers from right segment should be removed.
Would need a bit more investigation which situation
is more common in general usecase.
Until now, there was never any code for making drivers on materials get
recalculated when their dependencies were changed. However, since changing
material colors with drivers is something that is quite common, a workaround was
introduced to ensure that materials could still be driven (albeit with the
relevant drivers rooted at object level). This worked well enough so far with
traditional materials - though it was sometimes clunky and confusing for some
users - and would have been ok to tide us over until the depsgraph refactor.
The introduction of Cycles changed this, as it has in many other ways. Now that
people use Cycles to render, they'll need to drive the material colors through
the nested nodetree (and other things nested deeply within that). However, this
is much more difficult to generate hacks to create the relevant paths needed to
work around the problem.
== This Commit... ==
* Adds a recursive driver calculation step to the BKE_object_handle_update()
(which gets called whenever the depsgraph has finished tagging object datablocks
for updates), which goes through calculating the drivers attached to the object
(and the materials/nodetrees attached to that). This case gets handled everytime
the object is tagged as needing updates to its "data" (OB_RECALC_DATA)
* When building the depsgraph, every dependency that the drivers there have are
treated as if they were attached to object.data instead. This should trick the
depsgraph into tagging OB_RECALC_DATA to force recalculation of drivers, at the
expense perhaps of modifiers getting recalculated again.
== Todo ==
* The old workarounds noted are still in place (will be commented out in the
next commit). This fix renders at least the material case redundant, although
the textures case still needs a bit more work.
* Check on whether similar hacks can be done for other datablock combinations
* So far, only simple test cases have been tested. There is probably some
performance penalty for heavy setups still (due to need to traverse down all
parts of material/node hierarchy to find things that need updates). If there
really is a problem here, we could try introducing some tags to limit this
traversal (which get added at depsgraph build time). <--- USER TESTING
NEEDED!!!
This applies to files when saving from image editor and when saving
render result.
Currently only works for images which has got float buffer and saving
happens to byte formats (such as PNG, JPEG). Also supports applying
color management for preview jpegs when main buffer is saving into
OpenEXR file.
As default transform when saving from image editor would be the same
settings as image editor uses itself.
Defaults for color correction of rendered images would be default
display name, no view transform and default values for gamma and
exposure.
- Move color management display settings into own structure like it's
done for view settings.
This is helpful from two sides:
* It is planned to support display calibration settings which
should be taken into account by color management stuff to
add needed transformations to OCIO processor.
* File saving should be able to make the same display
transformations as it's done by window when displaying the image.
Having own DNA and RNA structures for display device settings
helps avoiding having duplicated code.
- Small refactor of cacheing functions which are now accepts
cache-like versions of view and display settings. This structures
used for cache are quite the same as DNA structures but they contains
indices of view and display which avoids extra lookup for this
things.
This also helps having reasonable amount of variables passing
to cache functions.
