Friday, 11 November 2011

Day 50 : Volumetric lights II



I left the computer for test rendering yesterday, it took 16 hours to render around 160 frames together with the sea of glass. The lights are not divided to many lightstreaks yet. Here is some reference pictures for visualisation




Reference pictures:





I learnt from odforce forums that the steps to generate a volumetric light is not that fanciful. And to render fast, i could actually increase the step size on the volume object and to get higher quality, just decrease the step size.
This is a scene file posted by one of the user, using the technique of iso offset (fog volume) with the lights piercing through the trees done by L-system. Simple but yet fascinating



Mr Ron taught me to hide the object from rendering out by ticking the phantom in the geometry tab

Hid the grid

Mr Ron then came by and taught me a conventional method with copy/stamping of emulating many holes in a circle to segregate the one whole light into several light streaks. There frequency/size of the holes is manipulable

Done in photoshop
Another method is to use the light projection, by assigning a grayscale image to it. The light will be casted on the light parts, occluding the dark portion. However it does not work for fog light for unknown reason


Some render test:

Mr douglas told me to be mindful of the position of the light is pointing. And minimum 3 lights will be need

No comments:

Post a Comment