* Add a poll function that only activates the operator when a stencil
brush is active
* Change shortcuts to RMouse - translate, Shift - RMouse Scale, Ctrl -
RMouse, rotate. MUCH faster and simpler workflow.
* Change shortcut of colour sampling to S. Sampling is important but not
as important as warranting the Right Mouse button.
* Add a notifier so that toolbar gets updated texture rotation when
rotating the stencil
Also,
* Slight rearrangement of options so that jittering is more accessible
(easily more often used than smooth stroke)
* Using masking is determined only by the presence of the texture,
remove extraneous DNA flag (might cause issues later but in practice
brush options are not harmful)
* Overlay and angle sliders are active during stencil mapped brushes
* Only draw the overlay if there's a texture.
* Unnecessary shader inputs inside the Mix Shader are now ignored, in case the factor is 0.0 / 1.0 and not connected.
This way we save some render time for complex node graphs.
Example: http://www.pasteall.org/pic/show.php?id=48226
Check the Mix Shader at the end: In this case, Cycles will now avoid the complete huge shader tree, and only calculate the Diffuse Shader.
Rendertime decreased from 1:50 min to 1:20 min on CPU. GPU rendering benefits as well from this.
This only affects SVM, OSL was already doing these optimizations.
Stencil style texture mapping. Ready for field testing and user feedback.
This commit adds stencil like brushes, like those that existed on old ptex branch.
(with the exception of clip colour)
To control the position of the stencil, you use
Q: translation
Shift - Q: scaling
Ctrl - Q: rotation
There's extra work that has been done to make this work:
* Support for coloured overlay in vertex/texture painting
* Also made A button do stroke mode selection like in sculpt mode,
when mask painting is inactive.
There are some TODOs to work on during bcon3:
* Support tiled and stencil mode in 2D painting. Support alpha textures also.
* Tidy up overlay code. There's some confusion there due
to the way we use the primary brush texture sometimes for alpha, other times
for colour control.
WIP design docs will be in
http://wiki.blender.org/index.php/User:Psy-Fi/New_Brush_Tool_Design
sculptification commit. We have a drop menu to select the stroke mode
now. Jitter controls appear under stroke panel under all modes (As they
should! They stroke control options). Also enable jittering for all
modes. I really fail to see why not.
Implemented using GLSL API from OpenColorIO library and
some general functions were added to it's c-api:
- OCIO_setupGLSLDraw prepares OpenGL context for GPU-based
transformation for a giver processor.
This function compiles and links shader, sets up it's
argument. After this transformation would be applied
on an image displaying as a 2D texture.
So, glaDrawPixelsTex called after OCIO_setupGLSLDraw will
do a proper color space transform.
- OCIO_finishGLSLDraw restores OpenGL context after all
color-managed display is over.
- OCIO_freeOGLState frees allocated state structure used
for cacheing some GLSL-related stuff.
There're some utility functions in IMB_colormanagent which
are basically proxies to lower level OCIO functions but
which could be used from any place in blender.
Chacheing of movie clip frame on GPU is also removed now,
and either glaDrawPixelsTex or glaDrawPixelsAuto are used
for display now. This is so no code duplication happens
now and no large textures are lurking around in GPU memory.
Known issues:
- Texture buffer and GLSL are no longer checking for
video card capabilities, possibly could lead to some
artifacts on crappy drivers/cards.
- Only float buffers are displaying using GLSL, byte
buffers will still use fallback display method.
This is to be addressed later.
- If RGB curves are used as a part of display transform,
GLSL display will also be disabled. This is also thing
to be solved later.
Additional changes:
- glaDrawPixelsTexScaled will now use RGBA16F as an
internal format of storing textures when it's used
to draw float buffer. This is needed so LUT are
applied without precision loss.
bookkeeping variables from when the code was shared with texture
painting) Also texonly now is always zero, probably another leftover
from 2d/3d painting entanglement era.
- pass string size to BLI_timestr() to avoid possible buffer overrun.
- quiet warning for mingw.
- include guards for windows utf conversion funcs.
- fix for mistage in edge-angle-selection check.
- some style cleanup.
* Reflect changes stated in prev commit about contexts in py code.
* Add a "Plural" context, to handle cases where english does not mark plural at all (e.g. shorten labels of only one adjective). Not so happy with that, but can't see any other way to do it, for now.
* Abuse "ID_CURVE" context for all falloff curves (this should solve some confusion issues, e.g. "sharp"...).
Couple of precision issues here:
- Interpolation was rounding trunkcating colors, and because
of some precision issues value 254.999 became 254 leading
to troubles later.
Now color interpolaiton will do rounding to nearest int.
- Subtract was setting channels to something negative which
confused color management (especially negative alpha),
Now subtract effect will clamp channels to 0 from bottom
and also do some tricks to prevent small alpha which
could also confuse color management.
The NOT BOOST test was changing Cycles so should be before the
cycles-oiio link (by Campbell Barton, thanks)
And exr and tiff are required for oiio (on OSX at least)
