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I am at the 4th iteration on the pixel inspector and light path debugging tool. Eventually I moved the path collection to the GPU, so I don't have to toggle between CPU and GPU rendering, making the visualization fully interactive.

Max Liani

13,605 subscribers

83,377 views • 2 years ago •via X (Twitter)

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10 Comments

Tom Stochastic | Making Tiny Glade 🏰🌿2 years ago

That looks extremely useful and well done! Totally stealing it for my future renderers :D

Max Liani2 years ago

🙏 Looking forward to see your take on it!

Crozius2 years ago

nice, I always wanted to have such a feature in the renderer!

Max Liani2 years ago

Hehe. Me too, I don’t have much time available to fix light transport issues; good visualization, plus the ability to repeat the path on the CPU with a debugger are key.

SimonA2 years ago

Love it

Blarghamel Jones2 years ago

"This will be the [fourth] time we have [rewritten] it, and we have become exceedingly efficient at it" Well done!

Max Liani2 years ago

Hehe, more like the fourth time I come back to the feature adding bits and improvements. Actually, this is still using the first implementation core 😄

Aakash KT2 years ago

This is so great!

Jarl Larsson2 years ago

Wow that’s super neat, so the path collecting visualization is all gpu, no readback inbetween? 😃

Max Liani2 years ago

It does read back. The paths visualization is rasterized on top of the path traced image. But the earlier iteration was running on a matching CPU path tracer.

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