* The actual problem was that the total amount of particles was rendered at all, since only the displayed percentage was calculated correctly.
* New behavior is that before baking (baking is always done for full % of particles) the display % is used for rendering too for dynamic particles.
* Also added a warning below the display % slider to inform about the situation.
This commit and other commits attempting to fix it broke various things. The
main thing that changed was that instead of computing children/paths in
advance as part of particle_system_update, this was moved to do it just before
drawing or rendering. I've changed back that behavior and tried to keep the
other fixes in the commit.
When the new particle system was just committed, it also worked this way but
gave various problems, and I had to remove that behavior to get things working
stable. Basically it meant that you could get have a path cache that was
outdated in various situations, and it doesn't fit well with dependency graph
evaluation order.
This fixes:
#22823: Children Particle Rendering is broken
#22733: Particle objects not displayed
#22888: SigSegV when rending hair particles
#22820: Another SigSegV when undo adding hairs in particel edit mode
Some particle setups in dupligroups.
The three bugs that the original commit fixed are now also still working in
my tests:
#21316: Hair weight drawing is wrong
#21923: Consistent Crash When Rendering Particle Scene.
#21950: Path rendering option for particles causes crash
Modifiers were being mistakenly recalculated at every frame as long as the object had animation, slowing things down due to incorrect depsgraph recalc tags.
Renamed OB_RECALC -> OB_RECALC_ALL to reduce future confusion. During this process, I noticed a few dubious usages of OB_RECALC, so it's best to use this commit as a guide of places to check on. Apart from the place responsible for this bug, I haven't changed any OB_RECALC -> OB_RECALC_OB/DATA in case that introduces more unforseen bugs now, making it more difficult to track the problems later (rename + value change can be confusing to identify the genuine typos).
* Fractional frames support has been changed to use a new var, scene->r.subframe.
This is a 0.0-1.0 float representing a subframe interval, used in generating a final float
frame number to evaluate animation system etc.
* Changed frame_to_float() and some instances of bsystem_time() into a convenience function:
float BKE_curframe(scene) which retrieves the floating point current frame, after subframe
and frame length corrections.
* Removed blur_offs and field_offs globals. These are now stored in render, used to
generate a scene->r.subframe before render database processing.
* Path drawing now works for non hair particles.
* Should fix the following bugs too:
[#21316] Hair weight drawing is wrong
[#21923] Consistent Crash When Rendering Particle Scene.
[#21950] Path rendering option for particles causes crash
- BGE Shader.setSampler(name, index): index range check was wrong.
- Compositor check for an invalid channel was incorrect.
- getting the center of selected verts used an uninitalized z axis.
- do_init_render_material() used && rather then & when testing for MA_TRANSP.
- weight paint activate flipped bone used && rather then & for flag checking.
* Increasing subframe count increases stability for SPH fluid and Newtonian particles
* Also small tweaks into physics ui panel to better fit new subframes value
* This commit also fixes the moving fluid emitter problem as described by Raul in the mailinglist
This patch add SPH (Smoothed Particle Hydrodynamics)fluid dynamics to the
blender particle system. SPH is an boundless Lagrangian interpolation
technique to solve the fluid motion equations.
From liquids to sand, goo and gases could be simulated using the particle
system.
It features internal viscosity, a double density relaxation that accounts
for surface tension effects, static internal springs for plastic fluids,
and buoyancy for gases.
---------------------------------------
This is a commit of the core fluid physics. Raul will work on proper
documentation soon and more features such as surface extraction from
the particle point cloud and increasing stability by sub-frame calculations
later.
levels, child particles, and shadow/SSS/AO quality.. Now also works on what
is displayed in the 3d view instead of only rendering, see panel in the scene
properties.
Most file changes were to make scene available in the isDisabled modifier
callback function.
* The hair mesh vertex index was stored as a short, but vertex counts can easily go higher than what fits in a short so changed this to an int.
* Also removed particle life looping, which didn't work correctly anyways. Similar functionality will become available when I get to recoding reactor particles into a better system.
* Make partial update work again for faster editing.
* Draw parents over children again, nicer for editing.
* Fix crash with remove tools & showing child particles.
* Fix children not disappearing always when setting to None.
* Fix wrong normal for last point in child path.
* Fix a python error in the hair dynamics panel.
* Now uses the CCG DerivedMesh also in object mode, used to be edit mode only.
* Create CD_ORIGINDEX layer on demand, to save memory.
* Removed ss_to_cdderivedmesh function, and instead create ccgdm and then
convert that to cddm, to avoid code duplication.
* Added and implement DerivedMesh interface functions to obtain face grids.
* Store edge/face flags more memory efficient.
* Export CCGDerivedMesh struct in BKE_subsurf.h
* Convert all code to use new functions.
* Branch maintainers may want to skip this commit, and run this
conversion script instead, if they use a lot of math functions
in new code:
http://www.pasteall.org/9052/python
