Optimizing Multiple Lenses (Caustics)

[PatD123]

Hi,

For the past several days I’ve been playing around with the Mitsuba tutorial on Caustic optimization, where it uses just one lenses. However, to achieve better results I hoped to use multiple lenses. However, I have yet to find a way to do it.

I’ve tried making 2 heightmap_textures so that each of their params can be looped into the computation graph but there is no good way of putting them in the optimizer (with the params arg) as you can’t change scene params after creation (as in adding new keys), from what I’ve tried.

I’ve also tried making another “scene” with two textures only, keeping the .data, but then I’ve run into the issue of not being able to compute eval_1on Textures.

Any help would be great

[njroussel]

Hi @PatD123

I’ve tried making 2 heightmap_textures so that each of their params can be looped into the computation graph but there is no good way of putting them in the optimizer (with the params arg) as you can’t change scene params after creation (as in adding new keys), from what I’ve tried.

Indeed, you cannot add new elements to the scene - you can only modify its parameters. So, you should add a second mesh to your scene, that is controlled by the second heightmap.