Dear all,
Can anyone suggest how to push the effects manager back to the main renderer. I select update design file lighting, but the outcome is quite different from the effects manager one.
Can you send me the test case? Not sure you have a shadow in the Luxology dialog that is not in the effects manager render.
jerry.flynn@bentley.com
Thanks
Jerry
Dear Jerry,
Thanks for the response. Please find the file.
May I also take the opportunity to refresh my mind on several key points you mentioned during the Bentley Viz session in London late last year:
1. For Large Renders used for Printing (4000 pixels or more), did you suggest to increase the number of irradiance rays to speed up the rendering time?
2.You suggested to turn off 'visible to indirect rays for objects in proximity to light sources to reduce interference
3. Indirect Bounces: Use 1 for exterior and 2 for interior shots
4. Use displaysets to facilitate test rendering
5. Would you have an ideal glass setting for external architectural shots with a decent balance of reflections vs transparency?
Once again thanks for your time.
Andrea
Hi Andrea,
For large high resolution renders you can usually bump up the Irradiance rate to speed up renders. Increasing irradiance rays will always slow down the rendering process but improves quality. If you are happy with a 1920x1080 render and want to double the res to 3840x2160 you could safely bump the irradiance rate from 2.5 to 5.0. For super high resolution 10,000 x 5,000 or higher you could bump the irradiance rate up to 10.00.
Yes you want to turn off visible to indirect on materials that are close to source lights especially point lights to prevent light noise.
One bounce is almost always good enough for exterior render but if you need to get a little more light say on the underneath side of a bridge you could use 2 bounces but I would never use more that 2 for exterior. For interior renders always use at least 2 and only increase the number if the scene warrants it as this will increase render times.
I use displaysets all the time for test renders they allow me to use fast preview to test render the geometry and make material edits in near real-time.
For building glass and glass in general you should use a diffuse value of zero. I am not a fan of specular so I would probably use 5.0 ( you need some specular for reflect to work). I would never use refract for a pane of window glass this should be set to 1.0.
Reflect should be around 15 to 30% and finish should be 98 to 100%. You can unlock Fresnel so that it is custom and set it to higher value could be 100% so that at a glancing camera angle the glass would become 100% reflective and you will not see through it and see only reflections.
The color of the glass should come from the specular color you can dial that in in the material editor.
You will need to be the judge on on transparency (opacity) if you want to see though the glass into the building.
Glass is not perfect look at any building and notice how distorted the reflections are, consider using a bump map if you want to add some distortion to the reflections. You can crank up the bump map image's antialiasing above 100% to tweak the bump map.
Hope this helps
Cheers,