The render generated from Freestyle's data is currently stored in the original scene's render structure ( as 'freestyle_render'): when the render database is generated, the scene's geometrical data is first imported into Freestyle and strokes are calculated. The generated strokes are used to create a Blender scene, rendered independently. The render result is used in the rendering loop.
The final rendering is performed the same way edge rendering is, in a function ('freestyle_enhance_add') operating on each individual render part. Freestyle strokes are only included if the toggle button "Freestyle" (in the 'Output' panel) is active and if the "Freestyle" render layer is also selected. Freestyle's panel appears when the toggle button 'Freestyle' is active.
IMPORTANT: as of now, rendering ONLY works when OSA is disabled and when Xparts = Yparts = 1. If these settings are not set, a bogus image will be created.
To make the render happen, many modifications had to be made:
- the Canvas::Draw and Operators::create methods no longer render strokes. They only generate shading and locational information.
- a BlenderStrokeRenderer class was added to turn Freestyle's strokes into a Blender scene. Basically, the scene consists of strokes in their projected image 2D coordinates and an orthographic camera centered in the middle of the corresponding canvas. The scene is rendered using vertex colors, in shadeless mode (therefore, no lamp is needed). BlenderStrokeRenderer uses the old GLTextureManager to load textures (as required by the StrokeRenderer class), even though stroke textures are probably not supported (not tested). After the scene is rendered, it is safely and automatically discarded.
- AppCanvas' code was greatly reduced to the bare minimum. The former AppCanvas would use an OpenGL-based back buffer and z buffer to determine the scene's color and depth information. In the future, this data will be determined from the corresponding render passes. Currently, the integration is not achieved so all style modules using depth/color information are sure to fail.
- before, Freestyle needed an OpenGL context to determine the camera's information and to compute the view map. As of now, the modelview and projection matrices are fully determined using data provided by Blender. This means both perspective and orthographic projections are supported. The AppGLWidget will very soon be removed completely.
added gameObject.replaceMesh(meshname) - needed this for an automatically generated scene where 100's of objects would have needed logic bricks automatically added. Quicker to run replace mesh on all of them from 1 script.
This is an interesting bug since it is likely the cause of many other suspicious python crashes in blender.
sys.last_traceback would store references to PyObjects at the point of the crash.
it would only free these when sys.last_traceback was set again or on exit.
This caused many crashes in the BGE while testing since python would end up freeing invalid game objects -
When running scripts with errors, Blender would crash every 2-5 runs - in my test just now it crashed after 4 trys.
It could also segfault blender, when (for eg) you run a script that has objects referenced. then load a new file and run another script that raises an error.
In this case all the invalid Blender-Object's user counts would be decremented, even though none of the pointers were still valid.
After some discussion with Campbell, changed the way cstruct sizeof is fetched.
Moved DataSize() to Blender.Types.CSizeof(Blendertype). Supported types return sizeof(data struct), otherwise -1.
To quickly check what types are supported:
import Blender.Types as bt
x = dir(bt)
for t in x:
if t[0] != '_':
s = 'bt.CSizeof(bt.' + t + ')'
print t,"=", eval(s)
[#17867] Adds option to SCONS to generate Python API documentation
Added patch from Brandano with some small improvements (BF_DOCDIR, clean) by yours truly.
To use make sure you have epydoc installed. Enable with WITH_BF_BPYDOC=1.
* fix two typos in RenderLayer API (renderosiy -> renderosity in two places. Will break .py's saved with render_save_layers.py, just fix passRadiosiy and passRadiosiyXOR)
* add some docs on RenderLayer API
* fix some copy/paste leftover in render_save_layers.py
Now it is possible to clean IPO-curves using the call:
icu.clean()
There's an optional value to specify the threshold to use for cleaning.
This just wraps the internal clean_ipo_curve() function.
Bug: [#17734] Loading a python script's help dosn't work
reported by Rian Tut (thanks).
Actual problem: scripts with spaces in their filenames were not supported by the code that registers scripts in menus and runs them. Added support w/o breaking eventual, rare scripts that parse the Bpymenus file. They will still need an update to support filenames with spaces, like done here for these scripts: Scripts Help Browser and Scripts Config Editor.
PS: tested on Linux. Please test on other platforms: just make sure scripts still appear in menus (the File->Export, for example), even after re-registering them (Scripts window -> Scripts Menu -> Update Menus) and that the Scripts Help Browser still works.
----------
Add optional string argument to Object.newParticleSystem() method, so that
objects can link to existing particle systems (if the name of the particle
system is known). Also cleans up some code in Object.c which accesses the
particle sys listbase.
- the number of segments was always 1 too many on cyclic curves.
- [#17739] - normals were not being calculated when rendering curves.
Replaced macro DL_SURFINDEX with a function. it that assumes variable names and could break from the loop that called it.
* subsurf code had a lot of unused variables, removed these where they are obviously not needed. commented if they could be useful later.
* some variables declorations hide existing variables (many of these left), but fixed some that could cause confusion.
* removed unused vars
* obscure python memory leak with colorband.
* make_sample_tables had a loop running wasnt used.
* if 0'd functions in arithb.c that are not used yet.
* made many functions static
(updated select group toolbox and header menu)
Added 2 copy property options - Replace All and Merge All, since there was no way to remove all properties, or set all objects game properties to be the same as the active objects.
Added set_ob_property(ob, prop) to property api.
bugfix in python api, copyAllPropertiesTo, it didnt check for duplicates or that it wasnt copying from/to the same object.
Patch by Darryl Pogue (paradox).
Blender cuts off datablock names at 20 chars, which causes issues if you're trying to access Scenes with a string longer
than 20 chars.
Ex.
s = 'GuildPub-Writers_GLOBAL'
Blender.Scene.New(s) #This creates the scene "GuildPub-Writers_GLOB"
Blender.Scene.Get(s) #This throws an error: the name and the string don't match
This patch cuts down the input of Scene.Get() to the 20 char limits, thus making the the above example return the correct
scene.
- calling Text_reset within C/Api funcs didnt decref the Py_None Text_reset returned.
- Text_delete wasnt checking if the input was an int.
- a number of functions wernt checking if the text was removed.
console.py
- added clear output
- command history leaves empty command before wrapping
- add imports as dummy user input so commands written to a text file will run.
- faster writing of output to a textblock.
Commit patch #7788, allow to set the render step, so it's
possible make render every N frames only.
The step is change in Scene buttons (F10), below start and
end frame buttons.
Also add a command line options (-j), so it's possible to
overwrite the file step (useful for renderfarm).
[ Brecht, this work with OpenGL renders and simulated
the skipped frames, please double check ]
Patch #9673: "Short patch to make spacehandler event scripts work more like normal python gui script handlers" by Steven Truppe:
http://projects.blender.org/tracker/?func=detail&atid=127&aid=9673&group_id=9
This patch adds the Blender.eventValue variable available for space handlers, holding the event value (aka 1 for button and key presses, X or Y coordinate for mousex / mousey movement). Thanks, Steven. PS: this doesn't break existing scripts.
Bug #17599:
Summary: Python constraints, good in 2.46 not working anymore in 2.47
http://projects.blender.org/tracker/?func=detail&atid=125&aid=17599&group_id=9
Improved my old hack to avoid frame changed scriptlinks from running when rendering stills, should fix this bug. It also causes REDRAW scriptlinks to be executed during renders, but that conforms to how FRAMECHANGED ones work.
BTW: this can still be improved. The current system meant to disable all Python functionality at once needs imo to be replaced by one that allows to enable / disable per feature (scriptlinks, pyconstraints, pynodes, etc.). A better way to inform scriptlinks about what is going on (render, anim, render anim, etc.) would also help. Will discuss with others.
