Thea Render Revision 486

Development versions, documentation, tutorials and application resources may be found here.

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giannis
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Dear friends,

we have a new revision that has some important fixes/additions.

First of all, this version fixes the bug introduced in the previous public RV481 revision with non-power-of-2
grayscale textures. This was actually the reason that RV481 was not posted on site. Chromaticity of sky/ibl
icon is also fixed when adjusting the sun on the HDRI thumbnail. Also, a bug from the beginning of Thea,
where Min/Max Emitter Rays parameters for an area light are ignored, is now fixed (bug for biased method
only). Tone mapping has also been corrected now working nicely with bump. More important, is that
a crash happening occasionally when saving a scene is now fixed.

This revision has also 2 major improvements.
First is the improved sampling of diffuse and rough glossy surface in the presence of IBL for Adaptive BSD
method. Especially, when the lighting in the IBL has a lot of variation, previous revisions used to give high
noise or blotches. The improvement is vast with a minor time penalty added. Check the images below.
Testing scene of a car render using default Final Gathering settings. Rendered by RV478 with 2 threads in 1m 32s, showing heavy noise and blotches.
Testing scene of a car render using default Final Gathering settings. Rendered by RV478 with 2 threads in 1m 32s, showing heavy noise and blotches.
CarScene_AdaptiveBSD_DifficultIBL_RV478_1m32s_i5_2threads.jpg (131.91 KiB) Viewed 761 times
Testing scene of a car render using default Final Gathering settings. Rendered by RV486 with 2 threads in 1m 37s.
Testing scene of a car render using default Final Gathering settings. Rendered by RV486 with 2 threads in 1m 37s.
CarScene_AdaptiveBSD_DifficultIBL_RV486_1m37s_i5_2threads.jpg (130.8 KiB) Viewed 761 times
Second, a big workflow improvement has been added. We can now save Sky/IBL/Sun settings with a few clicks
and easily apply them later in another scene. This way, you can easily now create your sky libraries
(including your sun settings) and restore them with a simple drag & drop in the Viewport.
Check the mini tutorial page below:
Saving and restoring Sky/IBL/Sun settings.
Saving and restoring Sky/IBL/Sun settings.
SavingRestoringSky.jpg (322.87 KiB) Viewed 761 times
Let 's come now to a nice enhancement. Thea by default is using trilinear interpolation for textures in Adaptive
BSD mode; this kind of interpolation needs additional trilinears maps which means additional memory resources.
We re-wrote the code so that these maps are constructed on demand only. This means that opening a scene
is faster now while rendering a scene with unbiased modes needs less memory, i.e. you can cope much more easily
with scenes having heavy textures ! ;)

Some other nice additions: a) you can launch a 2nd browser from Window > Browser #2. b) Thea keeps
automatically a backup file
now with the extension ".~"; if for some reason your scene file became corrupted
(for example, the power went down during saving a scene) you can open the backup. Go to File > Open
and choose the filter "Backup Files" from the drop-down list. Thea will swap then your backup file with
the normal file and you can continue to work with the normal file. c) You can now subdivide your
meshes
inside Thea! This helps when you have, for example, a low-poly mesh that you want to apply
displacement mapping. Making a very deep subdivision on the fly, with displacement mapping may take
a long time, instead pre-subdividing a few levels directly on the mesh helps to reduce the displacement
applied on the fly and finish your render faster. You can pre-subdivide from the scene view, right click
to bring up the context menu > Geometry > Subdivision > Planar (or Charles-Loop); Planar is the same
kind of subdivision used by displacement mapping. Note that you can also press the key "\" in the Viewport
to toggle the full triangulation and be able to see the planar subdivision.


You can find the new revision in the usual thread:
http://www.thearender.com/forum/viewtop ... 289#p14289

For convenience, you can also use the following mirror download links:
Windows: http://www.solidiris.com/thearender/The ... v1.0.8.exe
Linux: http://www.solidiris.com/thearender/The ... 0.8.tar.gz
MaxOSX: http://www.solidiris.com/thearender/The ... v1.0.8.dmg


best wishes
Science may limit knowledge but should never limit imagination - Bertrand Russell
19marco23
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wow! thaks to all!
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renderiche
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Fantastic!
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Hieru
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c) You can now subdivide your meshes inside Thea!
Can't wait to give this a go - Brilliant! :clap:
Nicola
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"c) You can now subdivide your meshes inside Thea! "
great improvement for archicad workflow!!!!!!!
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saurus
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Great improvements. Thank you.
Raoul
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an awesome update, bug fix, new features, plus sky library.. very much appreciated

- huge thanks to all for this revision :clap:
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Rombout
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wow wow wow wauuw... all those features!!!!! :clap: :crazy: :clap: :crazy:
ai and need to wait until tomorrow! :cry:
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sepo
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what an amazing development speed. :clap:
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giannis
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MacOSX build is available now. ;)
Science may limit knowledge but should never limit imagination - Bertrand Russell
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