ALERT! POSSIBLE BREAKING COMMIT, ESPECIALLY FOR SCULPT!
Separate the sculpt sampling function so that it can be reused
from other paint systems. This includes updating of the relevant
coordinates for anchored and rake style brushes, which are now
being updated as part of the stroke system.
I left only code for area-style brush texture mapping in sculpt
code, since it requires a few data structures not present on other
paint systems.
This commit makes it almost as easy to support rake on other systems as
exposing the python UI for it. Also it makes it totally possible to
have texture painting capabilities in vertex paint too :) These commits
will follow very soon.
Also, even if I did my best to keep the code from breaking, (even fixed a
leftover bug from coordinate changes) this is a big change. Please test!
absolute coordinates. This allows an artist to lower the brush radius
while keeping the spread of the brush constant. A toggle under the
jitter slider provides the option to switch between relative/absolute.
This is as close as I can get to keeping the old code intact. After this
commit, I will have to change existing code paths, making testing of
functionality harder.
Changes:
* Keep only projective texturing code in paint_image_proj.c
* Move 2D code to paint_image_2d.c. This needed the introduction of
allocation/cleanup functions for the relevant structures.
* Common code interface for both modes stays in paint_image.c (which
still includes all old code, system should work as it did with the
exception of non-projective 3D paint mode) and is made public. This is
not a lot of code, only rectangle invalidation and undo system.
* Changed the naming in the new code slightly: imapaint_ prefixed functions refer to
common functions used by both systems, paint_2d_ prefixed to 2d
painting. There will be an interface for the projection painting as
well. Probably there is some leftover naming conversions to do.
TODO:
* Move operator init/exec/modal to common interface file
* Get rid of old BKE_brush_painter_paint, now brush_painter_2d_paint.
All code uses stroke system for the stroke management
* Write space pressure management for the paint stroke system (for other
systems to access as well :) )
* Move texture paint tablet presssure exception code for old bugs to
stroke system (makes me wonder...aren't other systems also influenced by
these pressure issues?) or up in the function hierarchy inside texture
paint. This code is still not there so users with tablets may notice
some issues.
* possibly change other systems to pre-multiply pressure with the
relevant influenced attributes in the stroke function. This could get
tricky though and it's possible that it could backfire.
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!
It was caused by own mistake by not noticing externtex is used not
only by render engine. Now this function uses pool passed as argument
rather than using R.pool.
to draw with procedural textures on surface of object. 2D painting will
still paint as if tiled.
When we unify the paint systems, the texture sampling functions will
need to be changed. Sculpt uses a slightly different system that passes
both screen and 3d coordinates to the sampling function. This commit
however is not too disrupting for that however so it can go in now.
Separate 2D painting functions away from brush.c, which should implement
the brush API and into its own file, paint_2D.c.
Ideally projective texturing and 2D painting should be totally separate,
however functionality is still interleaved mostly in the
BKE_brush_painter_paint function. The functionality of this function can
possibly be done using the brush stroke functions instead.
now blenlib/BLI doesn't depend on any blenkern/BKE functions,
there are still some bad level includes but these are only to access G.background and the blender version define.
- Move to layer (and more popups) didn't scale yet
- User Prefs and render window now open on right location on Mac Retinas
- Brush sizes for painting now scale for Mac Retina
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 :)
Patch from Jaggz H, thanks!
[#31096] Weight-painting: Brush-specific weights
http://projects.blender.org/tracker/?func=detail&atid=127&aid=31096&group_id=9
Each brush's weight can now be set individually, can also enable
unified setting (same as size and strength have.)
Added readfile code to the patch: subversion bumped to 1, brushes get
default weight of 0.5, unified weight enabled by default and value
from old vgroup_weight field.
Things like brush size and strength accessors now take a scene
parameter rather than guessing about which Scene's unified paint
settings to use.
Setting the size/strength through RNA can now be done separately for
the brush or the UnifiedPaintSettings.
The UI python code required updating to check whether the
size/strength controls should use brush or UnifiedPaintSettings RNA.
Radial control also required some updates to switch between the two
RNA sources.
Added RNA for the unified paint setting flags that matches the Brush
RNA. Fixed the getter/setter functions to avoid guessing which Scene's
UnifiedPaintSetting to use. The getter functions take a Scene pointer
now, the setter functions are removed in favor of a more explicit
approach through RNA:
Rather than RNA choosing whether a property's value is in the Brush or
in the UnifiedPaintSettings, there are now explicit properties for
both. The UI code has been modified accordingly to switch the toggle
buttons between affecting the Brush and the UnifiedPaintSettings.
File subversion is bumped to two in order to copy over the old fields.
This removes two RNA properties, sculpt_paint_use_unified_size and
sculpt_paint_use_unified_strength.
Code review link:
http://codereview.appspot.com/5529077
* this loop is called multiple times per vertex (not addressed in this commit)
* functions like brush_use_size_pressure(), brush_use_size_pressure() called unified_settings() twice when they didnt need to.
looks like this code cant work right with multiple scenes, added a comment on this - but at least avoid calling unified_settings() multiple times in single functions.
- Rotation now happens around initial stroke location rather than around scene origin
- Added slider for rotation strength which helps in cases only few rotation is needed
to be to increase the precision of such strokes
