Gamma correction option was ignored by new compositor system.
Also new compositor was doing alpha premul in a wrong way. In fact,
not sure if it should do premul -- old compositor didn't do that..
also some other changes - no need to check the new loops face is larger and no longer split up the ngon more times then there are subdivisions in the face strip (now ngons will remain on both sides).
or baking. This basically means you will only have access to bpy.data and
bpy.context.scene, not current window, active object, etc, as those are not
thread safe anyway and were likely to cause issues already.
This fixes#30858, where the UI would lose buttons due to context getting
corrupted when editing objects in pre/post render or using luxrender. The
context access they did (indirectly) was only using the current scene or
data so they still work.
now USE_ALTERNATE_ADJ works, giving more stable corners that don't flicker and glitch out as the offset changes.
The shape is not a circle though and doesnt look quite as nice as the existing method.
This commit makes BKE_image_acquire_ibuf referencing result, which means once
some area requested for image buffer, it'll be guaranteed this buffer wouldn't
be freed by image signal.
To de-reference buffer BKE_image_release_ibuf should now always be used.
To make referencing working correct we can not rely on result of
image_get_ibuf_threadsafe called outside from thread lock. This is so because
we need to guarantee getting image buffer from list of loaded buffers and it's
referencing happens atomic. Without lock here it is possible that between call
of image_get_ibuf_threadsafe and referencing the buffer IMA_SIGNAL_FREE would
be called. Image signal handling too is blocking now to prevent such a
situation.
Threads are locking by spinlock, which are faster than mutexes. There were some
slowdown reports in the past about render slowdown when using OSX on Xeon CPU.
It shouldn't happen with spin locks, but more tests on different hardware would
be really welcome. So far can not see speed regressions on own computers.
This commit also removes BKE_image_get_ibuf, because it was not so intuitive
when get_ibuf and acquire_ibuf should be used.
Thanks to Ton and Brecht for discussion/review :)
As it turned out, the node space was the only place we have the option to sample the backdrop buffer RGB, but not the zed.
This code is copied from image space.
Now one can use the viewer node and sample the depth while looking at the color buffer (so Map Range Node works even better)
Patch written during BlenderPRO 2012, Brasília ;)
(reviewed by Lukas Toenne)
this node allows for more control for normalization of the mapped input range.
Made during BlenderPRO 2012 - Brasilia, Brazil :)
Idea and testing: Daniel Salazar
Implementation: yours truly
Reviewed by Lukas Toenne and Sergey Sharybin
