Mathias Heyer

Interesting data point; when swapping the usage of gl_ObjectToWorldEXT and gl_ObjectToWorld3x4EXT, it does seem to do the right thing: ``` #version 460 #extension GL_EXT_ray_tracing : require void main() { //...

@chrisdonlan what build environment are you using? I'm confused as to which sample you're attempting to build. The error message posted indicates you're attempting to build https://github.com/nvpro-samples/vk_raytracing_tutorial_NV which is deprecated....

@nvmheyer would be me with NVIDIA hat on :-) This is certainly a mistake in the NV_pbo extension specs (which are in fact based off the desktop extension spec language)...