Closed BlueBudgieNeedsWater closed 1 year ago
I'm glad it's working well for you!
Indeed, it's a known issue (#7) that the GPU path doesn't support animation. It's a matter of mapping pbrt's animation specification to optix API calls, which hasn't been done yet. (That isn't discussed in the book, so has been relatively low priority.)
PRs to fix it would be welcome. :-)
I am really happy that the gpu acceleration works so well. I use cmake gui 17.5, Cuda 11.8 and Optix 7.5 on Win10. Not a single warning or issue when compiling pbrtv4 with gpu support. The speed up is in the ball park of 150+ up to 200 for me with a RTX4070Ti, but I am on a slow Xeon cpu.
I checked animated objects today to see how motion blur looks, and all is fine without the --gpu option. I can set camera shutter times and animation start-stop times. All works as expected. When I use the gpu though, a warning appears that the animated object will be ignored. And indeed, in the rendered image the animated object is gone. Are animated object transforms only possible on cpu? I did not check an animated camera yet.