* Fix precision overflow issue with overlay previews,
* Expose alpha mask mapping to UI (still not functional but coming soon).
* More overlay refactoring:
Overlay now does minimal checking for texture refresh.
Instead, we now have invalidation flags to set an aspect of the brush
overlay as invalid. This is necessary because this way we will be able to
separate and preview different brush attributes on the overlays, using
different textures:
These attributes/aspects are:
Primary texture (main texture for sculpt, vertex, imapaint)
Secondary texture (mask/alpha texture for imapaint)
Cursor texture (cursor texture. It involves brush strength and curves)
Modified the relevant RNA property update functions and C update callback
functions to call the relevant cursor invalidation functions instead
of checking every frame for multiple properties.
Properties that affect this are:
Image changes, if image is used by current brush,
Texture slot changes, similarly
Curve changes,
Object mode change invalidates the cursor
Paint tool change invalidates the cursor.
These changes give slightly more invalidation cases than simply
comparing the relevant properties each frame, but these do not occur in
performance critical moments and it's a much more elegant system than
adding more variables to check per frame each time we add something on
the system.
* Shift-Rclick and holding right click, x or y will trigger constrained
scaling of overlay. Pressing again will revert to uniform scaling.
* Added operator, visible under the mapping drop menu, to fit stencil
aspect ratio to brush image aspect ratio.
* Made it possible to access stencil attributes from python as vec.x,
vec.y. Thanks to kgeogeo for pointing out!
* rename sculpt_brush_texture_settings to brush_texture_settings
* Expose texture scale and offset in texture paint mode
* Introduce still inactive mapping mode for texture paint, tiled and
view aligned only. Projective paint uses only tiled, while 2d paint can
use both. Commit will come that will use both appropriately for both
modes, omitting fixed brush flag (which is tiled with another name)
Settings are shown in both the View3D toolbar and texture properties
panel; code is now in shared sculpt_brush_texture_settings() function
in properties_paint_common.py.
Also added a few new properties to the SculptCapabilities RNA to
replace "X in {Y, Z}" tests in the Python code.
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.
