Weak Caustics with BiDir, Path Caustics ok
Posted: Tue May 01, 2018 10:26 pm
Hello Lux Community,
i have a problem with caustics and the Bidir rendermode, maybe you can help me out with it.
I cannot get a visible strong caustics effect with the bidir render mode and a hdri as lightsource.
I works fine with a sun light or spotlight, but i doesn't work with an hdri.
I know that it all depends on the correct hdri, but the problem is that i can get caustics with the path tracer
mode in the same scene with the same settings. I've attached two renderings, one with path the other with bidir, and the difference is quite big. There are no caustics in front and only very weak caustics behind the sphere with bidir, the path tracer one is ok.
I always thought that bidri is the caustics king, but now i am a little bit puzzled.
Could this be a bug or some messed up settings on my end ?
I've also attached the .blend file ( the hdri was from here https://hdrihaven.com/hdri/?h=furry_clouds )
I have used Blender 2.79b and the latest BlendLuxCore v2.0rc1.
Thanks for the help.
i have a problem with caustics and the Bidir rendermode, maybe you can help me out with it.
I cannot get a visible strong caustics effect with the bidir render mode and a hdri as lightsource.
I works fine with a sun light or spotlight, but i doesn't work with an hdri.
I know that it all depends on the correct hdri, but the problem is that i can get caustics with the path tracer
mode in the same scene with the same settings. I've attached two renderings, one with path the other with bidir, and the difference is quite big. There are no caustics in front and only very weak caustics behind the sphere with bidir, the path tracer one is ok.
I always thought that bidri is the caustics king, but now i am a little bit puzzled.
Could this be a bug or some messed up settings on my end ?
I've also attached the .blend file ( the hdri was from here https://hdrihaven.com/hdri/?h=furry_clouds )
I have used Blender 2.79b and the latest BlendLuxCore v2.0rc1.
Thanks for the help.