- Fixed issues with calculating matte with balance != 0.5
It used to be used concave combination of minimal and maximal
channel values which could be inpredictable.
Use concave combination of two non-major channels sorted
by their index, so such combination would always use the same
coefficients for particular non-major channels.
- Added despill balance slider which defines balance between
non-major channels used for calculating average of two
colors. Difference between average value and pixel value of
major screen channel defines amount of despill. Balance of
0.5 gives the same behavior as it was before this slider
was added.
- 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.
- De-duplicate code used by color management panel drawing,
moved this panel to utility file in bl_ui
- Added support of per-window color management control
which means view transform. exposure and gamma could be
set per window and all spaces would use this settings.
This is default behavior for older files now.
- Added support of color management display of movie clips
in clip editor.
Supported both texture buffer and fallback draw methods.
- Fixed default values for exposure and gamma
- Move space-being settings (such as view transform) into own
DNA and RNA structure to avoid code duplication in some areas
and save some arguments on display buffer acquiring function.
Also added some utility functions to BKE to manipulate this
settings.
- Replace static sized color managed buffer flags array with
dynamically sized array which matches actual number of displays.
Probably this flags better be transfposed so it'll support
any number of view transforms and 32 displays (currently it's
other way around). it's runtime flags only, so would be simple
to change any time.
- Added support of configurable exposure and gamma.
Changing this settings wouldn't generate new item in cache,
it'll affect on buffer with the same color spaces conversion.
It'll also run full color transform from scratch on every run,
this could be changes in a way that it'll re-use color managed
buffer, but from quick glance it doesn't give really noticeable
boost.
Currently this settings are stored as pointer in ImBuf structure
itself. Probably it make sense removing them from ImBuf and make
moviecache be able to store some kind of tags associated with
cached ImBuf.
- Made color management cache safe for situations when one area
requested a display buffer, then some changes were done which
invalidated cache, other area requested display buffer which
changed cached buffer.
Suck case could be fatal for first used of display buffer,
which didn't happen yet because cache is being accessed from
main thread only, but better to keep this things completely
thread save to avoid headache in the future.
- Baked RRT transformations, which gives ~3-4 times boost
hopefully without visible artifacts.
- Added support of partial updates to display buffers.
This would create special context which hols display buffer
which imbuf had to the time of creating this context and
later this context would allow to run a color correction
from given linear buffer within given region.
This is being used by compositor to enable more realtime
display update when compositing.
- Added support of color management backdrop for nodes editor.
There's now special menu called display properties in N-panel
of nodes editor.
Probably this better be de-duplicated somehow, but not sure
yet how. Currently it's not so harmful to have panel for two
spaces which contains only 2 properties.
There's currently one unsolved issue with backdrop:
it's not being updated progressively when just loading the
file -- it's simply because there's no color managed display
buffer for backdrop yet, and compositor doesn't actually
know which color space to use here to generate preview to.
The transform operators in nodes will now use the unselected nodes to generate snapping points. Unlike object snapping, node snapping works for the x/y axes separately and snaps node borders to same borders of unselected nodes. The sensitive area for node borders extends over the whole view2D range, to enable simple alignment of nodes in both x and y direction.
For snap points in the node editor an additional enum value is stored to indicate the type of node border (left/right/top/bottom). This works as a constraint on possible node alignments: only same border types align with each other.
Snapping actually was working already, but grid spacing was set to 1.0, which is basically pixel size in the node editor. Increased this to 1x grid step for fine snapping and 5x grid step for rough snapping.
Grid drawing in node editor now draws 2 levels in slightly different shades to indicate the different snapping modes better.
Node editor also supports the general use_snap tool setting to enable automatic snapping during transform. For now only the incremental snapping is supported, in future could be extended to enable alignment between nodes in a number of ways.
Now these links are drawn in the same way as all others. Also they now display highlighting correctly when inserting a node into a link, making it easier to avoid unwanted insertions.
