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Topics - Ondra

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181
News / Added support for Multiscatter, ForestPack
« on: 2013-03-24, 18:45:20 »
I am glad to anounce, that thanks to the support from developers of Multiscatter and Forestpack you will be able to use these advanced scattering plugins with Corona in the next release.


182
News / Thoughts on the next development
« on: 2013-03-23, 23:37:16 »
Hi all,
since there are many relatively serious bugs in Alpha 4, I will try to speed up the release of next (bugfixed) alpha as much as possible, that means it will be released after just 1 or 2 major features are added (probably IES lights and interactive rendering).

The development speed will be however somehow slowed down, because I also need to work on a business plan and do some negotiations with potential sponsors to finance full-blown commercial development.

183
[Max] General Discussion / Corona Alpha4 Benchmark scene
« on: 2013-03-17, 21:33:06 »
This is archived thread, we have released an improved benchmark based on newer Corona version: https://forum.corona-renderer.com/index.php/topic,11243.0.html - you should use only this one.

I've prepared a standalone version of Corona to run a prepared scene with a reference configuration, and report the rendering time. It is a nice demo of Corona capabilities, and you can use it to judge how fast can your computer run Corona, and what would you gain by upgrading it

You can download it here, to run it, simply download, unpack, run the .bat file:

http://corona-renderer.com/stuff/a4-benchmark

It requires x64 Windows Vista or newer, and Intel Core 2 9xxx or newer, or AMD equivalent. It does not require 3ds max to run. You have to have MSVC redistributable installed to run the application: http://www.microsoft.com/en-us/download/details.aspx?id=13523

It runs for about 5-15 minutes on most computers, then it will pop up windows with copypastable info (and save image to its folder). To get best results, you should not perform any CPU-heavy operations while it is running

Feel free to post your test results

Copyright notice: The model and textures are property of its authors, and it is forbidden to use them outside of this application.

Disclaimer about the speed of the rendering, since many people discuss if the scene is somehow "cheated":  The rendering runs in a partially biased mode with partial lighting interpolation (irradiance caching/light caching-style) enabled, it is not pure path tracing nor unbiased. The settings are slightly tweaked to achieve best performance (about 3 parameters are changed, because by default they are set defensively to allow reasonable rendering of much more complex scenes), and the scene uses portal lighting. Any professional Corona user would be able to tweak the scene the same way. The scene is a real scene created by an artist, with not subsequent tweaking such as removal of geometry. Effect of turning portals on/off is shown here

PS: Here is the original .max scene: https://forum.corona-renderer.com/index.php/topic,4354.0.html

184
News / Full Hošek sun model
« on: 2013-03-09, 00:48:57 »


Although this is more a toy feature, it has to be tweaked a lot to get any usable result, because the sundisk is really hard to colormap.

185
[Archive] Alpha Builds / Corona Alpha v4 released!
« on: 2013-03-08, 23:17:53 »
Warning: this is an outdated build, use Alpha v5 instead


Hi all,
I've just released the new version of Corona, Alpha v4. It contains all updates from daily builds. It is attached at the end of this forum post.
It is subject to the Corona licence/disclaimer. The installation instructions are here.

The changes reflect half a year worth of development, and are too numerous to list them all. Below is a list of the most significant ones. There were also lots of small bugfixes/performance improvements/tweaks

Major new features
===============================================
- New Virtual Frame Buffer, with better desing and functionality
- Optional Light portals, for speeding up rendering of scenes with small windows
- Better system of artistic control fakes (selective visibility of objects)
- New robust algorithms for rendering caustisc (toy implementation, generally not usable in production):
    - Bidirectional Path tracing
    - Vertex Connection and Merging,
    - Light tracing,
    - Progressive Photon Mapping
- Windows Vista support (again)
- Option to autosave renders during and at the end of rendering
- GUI layout for settings and texmaps reworked

Major bugfixes:
===============================================
- Fixed unpredictable blurriness of some textures
- Fixed performance scaling on multiprocessor machines
- Massively improved convergence of scenes with tens of thousands of lights
- Fixed holes in objects with displacement and/or motion blur
- Massively improved performance and decreased memory consumption when using displacement and textured light emitters
- Fixed bug causing wrong defaults to be set after scene reset
- Fixed crashes when using some texmaps

Some of the minor new features:
===============================================
- Diffuse/Reflect/... render passes now contain direct lighting
- Blowup and Crop render modes are now supported
- Material editor rendering quality spinner added
- Bucket rendering now works progressively
- Corona scatter now supports volume scattering
- Colored Bokeh effect
- Camera clipping added (via Corona camera modifier)
- Option to disable colormapping for a texture (via Corona Map Output texmap)
- "Hide edges" in Corona Edge texmap now works
- Implemented full sky model for high quality closeup renders of sunset
- VPL renderer/GI solver (fast biased solver, toy implementation)

Corona benchmark scene
===============================================
It is a standalone, no-3dsmax-needed benchmark for Corona. See here: http://forum.corona-renderer.com/index.php/topic,559

Known issues
===============================================
- When opening older scenes, you need to open render settings dialog and then resave (warning windows will pop). Sometimes, it is necessary use merge to load an old scene.
- Sharp edges on diffuse surfaces of low-res geometry when using strong and small light sources, or bump mapping. FIX: tesselate the geometry further
- Using motion blur on geometry with changing topology (face count) is not supported, such objects are not rendered
- NormalBump map is not supported
- VFB is occasionally slow or displays as see-through on windows 8 + geforce 6xx. The latter can be fixed by minimizing and maximizing 3dsmax again

186
News / Camera clipping added
« on: 2013-03-03, 21:04:38 »
Coming in next alpha (i.e. soon)

187
News / Added support for normalbump, Hair&Fur
« on: 2013-01-22, 21:43:46 »
Available in the daily builds.
Hair&Fur is pretty rudimentary though, it works only in the geometry mode.

188
News / New Frame buffer
« on: 2013-01-21, 00:25:38 »
I've implemented new Virtual frame buffer in the multiplatform library wxWidgets. It will replace the current custom VFB in next alpha release. It will be also used in the standalone version and when porting to other applications, and it will be easy to add for example render region or paint focus functionality to it.

The window on right with statistics is optional (off by default, can be turned on/off with the stats button)


189
[Max] General Discussion / How should the frame buffer look?
« on: 2013-01-18, 22:26:47 »
Here are some mockups of the new Virtual frame buffer done in Photoshop. Which layout/configuration/style do you like the best? Or do you have any other idea how it should look?

Different background colors of some buttons in some images are to be displayed when the button is clicked/focused.

There could be a switch between the first and second variant (show/hide textual labels)

190
News / Vertex connection and merging added!
« on: 2012-11-29, 00:18:52 »
Ok, this algorithm is probably the best thing you can get to render reflections/refractions of caustics (objects enclosed in glass, water caustics, ...) in an unbiased way



excuse me while I do my victory dance

191
News / Interactive rendering
« on: 2012-11-23, 11:25:10 »
Currently only experimental feature in standalone version:

192
No additional comments necessary ;)

193
The title says it all ;) In which 3D software besides 3dsmax would you like to have Corona next?

Disclaimer: this is only for my info, I am not actually starting integration into anything else any time soon

If I forgot some 3D package, write it here and I'll add it

194
News / Displacement enhanced
« on: 2012-11-01, 21:31:39 »
I've changed the way displacement subdivision rate is computed, it should be now possible to create much more complex scenes with same amount of memory. Same goes for textured lights.


195
Off-Topic / Funny images/videos
« on: 2012-10-24, 23:59:26 »
because this needs more love!

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