# Unbiased Randering and Caustics **URL:** \ **Category:** Render Theory\ **Created:** [July 21, 2012, 1:59am UTC](https://forums.chaos.com/t/unbiased-randering-and-caustics/42119 "2012-07-21T01:59:23Z")\ **Posts on this page:** 11\ **Page:** 5
**Author:** ![vlado](https://avatars.discourse-cdn.com/v4/letter/v/779978/32.png) [@vlado](https://forums.chaos.com/u/vlado)\ **Post date:** [April 16, 2013, 9:30pm UTC](https://forums.chaos.com/t/unbiased-randering-and-caustics/42119/81 "2013-04-16T21:30:30Z")
Sorry I meant the latest 3.x nightly πŸ™‚ This will not be available in the 2.x versions. Best regards, Vlado ---
**Author:** ![vlado](https://avatars.discourse-cdn.com/v4/letter/v/779978/32.png) [@vlado](https://forums.chaos.com/u/vlado)\ **Post date:** [April 16, 2013, 9:30pm UTC](https://forums.chaos.com/t/unbiased-randering-and-caustics/42119/82 "2013-04-16T21:30:59Z")
> [@animated proxies.. efficiency](https://forums.chaos.com/t/animated-proxies-efficiency/40854/4): > > Also do u think in order to render that in 25s we need better hardware or better code? You need a magic wand πŸ™‚ Best regards, Vlado ---
**Author:** ![anchovy](https://avatars.discourse-cdn.com/v4/letter/a/3be4f8/32.png) [@anchovy](https://forums.chaos.com/u/anchovy)\ **Post date:** [April 16, 2013, 9:44pm UTC](https://forums.chaos.com/t/unbiased-randering-and-caustics/42119/83 "2013-04-16T21:44:25Z")
> [@3ds Max 2013 announced](https://forums.chaos.com/t/3ds-max-2013-announced/40866/21): > > You need a magic wand πŸ™‚ > > Best regards, > Vlado LOL you dont happen to have a spare? -Michael > **[Morphographic](http://morphographic.com/)** > > Ill Have To Figure Out Something Clever Here ---
**Author:** ![anchovy](https://avatars.discourse-cdn.com/v4/letter/a/3be4f8/32.png) [@anchovy](https://forums.chaos.com/u/anchovy)\ **Post date:** [April 17, 2013, 1:35am UTC](https://forums.chaos.com/t/unbiased-randering-and-caustics/42119/84 "2013-04-17T01:35:08Z")
> [@NVIDIA Kepler](https://forums.chaos.com/t/nvidia-kepler/40713/37): > > Here is a 3-hour test with the WinOSI scene and the latest nightly. > > Best regards, > Vlado Did that have the lenses in the fixtures included? if so it its nice to see the reflector lit up. πŸ™‚ -Michael > **[Morphographic](http://morphographic.com/)** > > Ill Have To Figure Out Something Clever Here ---
**Author:** ![vlado](https://avatars.discourse-cdn.com/v4/letter/v/779978/32.png) [@vlado](https://forums.chaos.com/u/vlado)\ **Post date:** [April 17, 2013, 5:39am UTC](https://forums.chaos.com/t/unbiased-randering-and-caustics/42119/85 "2013-04-17T05:39:43Z")
> [@anchovy](#): > > Some nice results, Are you looking to his work to influence how VRay will be handling the vertex merging? We actually took a step further and simply got Iliyan over here for a couple of weeks to help us with the implementation πŸ™‚ Best regards, Vlado ---
**Author:** ![anchovy](https://avatars.discourse-cdn.com/v4/letter/a/3be4f8/32.png) [@anchovy](https://forums.chaos.com/u/anchovy)\ **Post date:** [April 17, 2013, 6:48am UTC](https://forums.chaos.com/t/unbiased-randering-and-caustics/42119/86 "2013-04-17T06:48:23Z")
> [@PhoenixFD Beta install problem](https://forums.chaos.com/t/phoenixfd-beta-install-problem/40872/2): > > We actually took a step further and simply got Iliyan over here for a couple of weeks to help us with the implementation πŸ™‚ > > Best regards, > Vlado Well thats all kinds of awesome! -Michael > **[Morphographic](http://morphographic.com/)** > > Ill Have To Figure Out Something Clever Here ---
**Author:** ![sherridge101](https://avatars.discourse-cdn.com/v4/letter/s/b9e5f3/32.png) [@sherridge101](https://forums.chaos.com/u/sherridge101)\ **Post date:** [April 17, 2013, 7:01am UTC](https://forums.chaos.com/t/unbiased-randering-and-caustics/42119/87 "2013-04-17T07:01:08Z")
> [@Rendering Micro Scratches for Glossy Surfaces](https://forums.chaos.com/t/rendering-micro-scratches-for-glossy-surfaces/40733/14): > > Sorry I meant the latest 3.x nightly πŸ™‚ This will not be available in the 2.x versions. > > Best regards, > Vlado No worries. Looks great. Really looking forward to using this new feature. Cheers, Steve ---
**Author:** ![Dariusz\_Makowski\_Dadal](https://avatars.discourse-cdn.com/v4/letter/d/c4cdca/32.png) [@Dariusz\_Makowski\_Dadal](https://forums.chaos.com/u/Dariusz_Makowski_Dadal)\ **Post date:** [April 17, 2013, 7:11am UTC](https://forums.chaos.com/t/unbiased-randering-and-caustics/42119/88 "2013-04-17T07:11:10Z")
> [@Rendering Micro Scratches for Glossy Surfaces](https://forums.chaos.com/t/rendering-micro-scratches-for-glossy-surfaces/40733/14): > > Sorry I meant the latest 3.x nightly πŸ™‚ This will not be available in the 2.x versions. > > Best regards, > Vlado How do I go around getting Nightlies Vray Maya 3.0? Do I buy it/ask for it/etc etc? ---
**Author:** ![anchovy](https://avatars.discourse-cdn.com/v4/letter/a/3be4f8/32.png) [@anchovy](https://forums.chaos.com/u/anchovy)\ **Post date:** [April 18, 2013, 3:31pm UTC](https://forums.chaos.com/t/unbiased-randering-and-caustics/42119/89 "2013-04-18T15:31:58Z")
More eyecandy. Here is a scene ive appropriated from the WinOsi test suite. Big thanks to my friend Rhys for cooking up a script on a moments notice to read in the .vmd file format. Dispersion is currently borked with BDPT so we just have mono caustics. Kevin Beason had a really nice version of the scene from his renderer that I used as visual reference. Here is a 2012 scene file if anyone wants to play… Vlado Id love to see what 3.0 can do with this baby. [http://morphographic.com/PathTrace/2012\_BDPathTrace\_CuboOSI\_001.max](http://morphographic.com/PathTrace/2012%5C_BDPathTrace%5C_CuboOSI%5C_001.max) -Michael > **[Morphographic](http://morphographic.com/)** > > Ill Have To Figure Out Something Clever Here ![2012_BDPathTrace_CuboOSI_001.jpg](https://europe1.discourse-cdn.com/chaosprd/original/2X/3/37d6f3cdf774f418e2754bd721957a936ffc2957.jpeg) ![cubo.jpg](https://europe1.discourse-cdn.com/chaosprd/original/2X/f/fa1fb596c973d71f63897133c6e9ad8fc6a9d990.jpeg) ---
**Author:** ![anchovy](https://avatars.discourse-cdn.com/v4/letter/a/3be4f8/32.png) [@anchovy](https://forums.chaos.com/u/anchovy)\ **Post date:** [April 18, 2013, 3:37pm UTC](https://forums.chaos.com/t/unbiased-randering-and-caustics/42119/90 "2013-04-18T15:37:25Z")
One more, but more on this later. And the PPT version with dispersion for the glass. Hard to see it which is too bad. And the indigo version I appropriated the idea from -Michael > **[Morphographic](http://morphographic.com/)** > > Ill Have To Figure Out Something Clever Here ![2012_BDPathTrace_LightMaze_006.jpg](https://europe1.discourse-cdn.com/chaosprd/original/3X/6/f/6f78b05ae93a21c3f2045c291f43228432c0f655.jpeg) ![2012_ProgressivePathTrace_LightMaze.jpg](https://europe1.discourse-cdn.com/chaosprd/original/3X/2/c/2c959503a1e16449a48336b2310206bf9419b665.jpeg) ![indig006.jpg](https://europe1.discourse-cdn.com/chaosprd/original/3X/2/e/2ee0a31521bfb64098b4f4527e04b1ccf8e45c82.jpeg) ---
**Author:** ![anchovy](https://avatars.discourse-cdn.com/v4/letter/a/3be4f8/32.png) [@anchovy](https://forums.chaos.com/u/anchovy)\ **Post date:** [April 19, 2013, 10:45pm UTC](https://forums.chaos.com/t/unbiased-randering-and-caustics/42119/91 "2013-04-19T22:45:52Z")
So besides not seeing the dispersion on the glass when using BDPT im wondering about the relative reflection strength on all the reflective materials. Im sure its user error but it seem like the reflections are quite dim even though the reflectivity is quite hi even with the fresnel. And as the lights are well in the range of overbright, the reflections on the spheres dont burn through to white… odd. Id expect overbright reflections as we see in the Indigo test. Heres the file in case anyone wants to play. [http://morphographic.com/PathTrace/2012\_BDPathTrace\_LightMaze\_006.max](http://morphographic.com/PathTrace/2012%5C_BDPathTrace%5C_LightMaze%5C_006.max) -Michael > **[Morphographic](http://morphographic.com/)** > > Ill Have To Figure Out Something Clever Here [Previous page](https://forums.chaos.com/t/unbiased-randering-and-caustics/42119.md?page=4)