Wren

malexander
I wasn't able to do a 13000x13000 grid on my workstation (ran out of memory in both cases), but 8000x8000 was fine so I tested with that. GL headlight is faster than Vulkan as we haven't special-cased the headlight for Vulkan yet. Once we do, it should be about as fast as Vulkan's No Lighting mode. We have a few more missing bits to work through first, but the fast-headlight change will be backported to 20.5 when it's implemented.

If I add a point light to that scene and switch GL to HQ lighting mode, which would be a more fair comparison, then on my system (linux, Quadro A5000), GL and Vulkan have roughly the same performance, with Vulkan taking 3ms less time.

Thanks! That's great news!



ps. Side note I'm very impressed how many polys 20.5 Houdini GL can handle.

This topic covers it more in depth.

https://www.sidefx.com/forum/topic/96922/?page=1#post-426078 [www.sidefx.com]

Just tested latest Houdini 20.5.348 and OpenGL crushed Vulkan.

Grid SOP with 13000*13000 wired into a Mountain SOP.

GL viewport could rotate around real time smooth like butter. Vulkan viewport was choking on it.


CPU = 7800x3d
GPU = RTX 4070 Ti Super

Windows 11 fully updated and latest Nvidia studio drivers.