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* Subsurface samples were not taken into account for the Sobol directions table.
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Materials icons used to miss transparent background
and were using world environment which didn't give
so nice results.
Reviewed by Brecht, thanks!
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external connections of node group nodes were having name clashes with input/output sockets of the same name, leading to invalid cyclic connections in the cycles shader graph that were subsequently removed (prints warnings in terminal). Solution is to use two separate maps for inputs and outputs so group node sockets can safely use the same identifier.
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low roughness and same index of refraction.
Problem was bad float precision due to low roughness, which caused the pdf for
the different closures to not match properly.
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contained in a large low poly object very slow, due to failure case of fast
multithread BVH binning. Tweaked parameter now to avoid this.
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* Revert ui.py changes from r55868, I merged that over manually with tweaks in r55858.
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revision 55847.
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cleanup.
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* Cycles Render layers UI was broken after freestyle merge (changes were not merged). Did manual edits now with some tweaks.
* Some layout fixes for Mask Layer.
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float3 operators (on windows?)
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a bigger
problem where accessing float4 members with [] stops working due to optimizer, will
check that later.
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per render layer samples in addition to the progress bar.
Also fixed job progress bar not working at all on high DPI / retina, was so small
the actual progress was not visible.
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* Change some long "else if" conditions into switch case.
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account specific Renderlayer samples
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output
will not give straight RGB values if the alpha output is used, so that mixing with
a transparent BSDF gives the correct result.
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the same time, due to shared texture cache system.
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non-progressive integrator.
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a bit too much work.
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merging code.
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building lookup table.
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well as I would like, but it works, just add a subsurface scattering node and
you can use it like any other BSDF.
It is using fully raytraced sampling compatible with progressive rendering
and other more advanced rendering algorithms we might used in the future, and
it uses no extra memory so it's suitable for complex scenes.
Disadvantage is that it can be quite noisy and slow. Two limitations that will
be solved are that it does not work with bump mapping yet, and that the falloff
function used is a simple cubic function, it's not using the real BSSRDF
falloff function yet.
The node has a color input, along with a scattering radius for each RGB color
channel along with an overall scale factor for the radii.
There is also no GPU support yet, will test if I can get that working later.
Node Documentation:
http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/Shaders#BSSRDF
Implementation notes:
http://wiki.blender.org/index.php/Dev:2.6/Source/Render/Cycles/Subsurface_Scattering
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* 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.
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- 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.
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id's
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* Use already calculated theta^2 for theta^3 calculation.
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* Remove unused variable from noise_wave().
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* reset_session() was not taking render percentage into account in case persistent_data was enabled.
* also deprecate old "maximsize" DNA variable.
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did not get their correct default value set. Forgot to add this during r55440 ...
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* Avoid an unnecessary condition in light.cpp, (totarea > 0.0f) is always true inside the "if(kintegrator->use_direct_light)" branch.
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* Move OpenGL settings out of the film panel into its own.
Imho these should go completely elsewhere, but better separated than mixed with Cycles settings.
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or 2+ group input/output nodes.
The issue here was that the proxy nodes created for connecting extern group node sockets to the internal nodes were generated by the input/output nodes themselves.
0 input/output nodes: there would be no proxy that external group node sockets can map to
2+ input/output nodes: additional nodes would overwrite entries from previous nodes, so that only one of the input/output nodes would be used.
Solution is to always generate exactly 1 proxy node for every group socket in advance, regardless of whether it is used internally. Internal node sockets can then all map to this proxy node.
In the case out output nodes there should only ever be one active node, otherwise the connection to the proxy would be ambiguous. For this purpose the NODE_DO_OUTPUT flag has been exposed to RNA, so that cycles can check it and only use the active output.
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PyNodes opens up the node system in Blender to scripters and adds a number of UI-level improvements.
=== Dynamic node type registration ===
Node types can now be added at runtime, using the RNA registration mechanism from python. This enables addons such as render engines to create a complete user interface with nodes.
Examples of how such nodes can be defined can be found in my personal wiki docs atm [1] and as a script template in release/scripts/templates_py/custom_nodes.py [2].
=== Node group improvements ===
Each node editor now has a tree history of edited node groups, which allows opening and editing nested node groups. The node editor also supports pinning now, so that different spaces can be used to edit different node groups simultaneously. For more ramblings and rationale see (really old) blog post on code.blender.org [3].
The interface of node groups has been overhauled. Sockets of a node group are no longer displayed in columns on either side, but instead special input/output nodes are used to mirror group sockets inside a node tree. This solves the problem of long node lines in groups and allows more adaptable node layout. Internal sockets can be exposed from a group by either connecting to the extension sockets in input/output nodes (shown as empty circle) or by adding sockets from the node property bar in the "Interface" panel. Further details such as the socket name can also be changed there.
[1] http://wiki.blender.org/index.php/User:Phonybone/Python_Nodes
[2] http://projects.blender.org/scm/viewvc.php/trunk/blender/release/scripts/templates_py/custom_nodes.py?view=markup&root=bf-blender
[3] http://code.blender.org/index.php/2012/01/improving-node-group-interface-editing/
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* Simplify Computing Capability Check, only check for major.
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visibility as well
* Now Show Render and Show Viewport flags work independently and correct.
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before this only active scene would be rendered with border.
When do_render_fields_blur_3d() is finished, it'll modify
render's display rect so it'll correspond bordered render
result placed on black backgrund. Actual border is stored
nowhere, which makes it only way to re-calculate disprect
for all other renders used in compo based on source. Not
so big deal actually.
Also needed to modify Cycles a bit, because before this
patch it used border settings from scene being rendered.
Now made it so render data is passing to external engines.
Using a property inside RenderEngine structure for this.
Not best ever design for passing render data, but this
would prevent API breakage. So now external engines could
access engine.render to access active rendering settings.
Reviewed by Brecht, thanks!
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* More small improvements: return immediately, and use "else if".
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* Avoid some conditional branches for the Noise texture and return immediately.
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recent bugfix.
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in some cases.
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