Qusetion about spherical harmonic parameters of DIB-R

[zomkey]

Hi，thanks for your work! When I use DIB-R algorithm to render, I found the spherical harmonic parameters is differenet from original paper （https://cseweb.ucsd.edu/~ravir/papers/envmap/envmap.pdf ). I want to ask whether it is better to change the spherical harmonic parameters as DIB-R/frag_shtex.py, and does this change get better lighting result?

• Original define:

• DIB-R define:

[shumash]

Sorry this was never addressed. Closing old bug, no longer relevant to the library.

Check out new differentiable lighting additions in these tutorials:

• examples/tutorial/diffuse_lighting.ipynb
• examples/tutorial/sg_specular_lighting.ipynb

You might also be interested in a general differentiable shader using Spherical Gaussian lighting:

• examples/tutorial/easy_mesh_render.ipynb