is there anyone willing to support the development of open source webgpu ray tracer ?
(preview online demo (no bvh yet) is available here (link), by subscription for only one Euro for free) 
WGSL GPGPU LBVH Building & Traverse underway
P.S.:
(babylon.js is used to access webgpu)
Cool project! You could share the github repo if available?
(BVH hasn’t ported yet, I’m porting it from my previously unpublished opencl RTRT application, but it also requires writing a WGSL version of radix sort, because the Boost.Compute library was used for this earlier)
You can find them in this webgpu issue
specifically the dawn-ray-tracing project :
firstly, it requires custom chrome build
secondly, it requires support for ray tracing in video card drivers
P.S.:
well, I wanted to implement hardware agnostic software gpgpu ray tracing requiring only support for WGSL compute shaders
that‘s great！But The larger the heightand width of the webpage, the worse the performance。When I maximize the webpage,I got 18 FPS。
I think that’s expected, as more width and height = more pixels to go over
seen webrtx under webgpu ? 
(released 4 months ago)
example from description
P.S.:
also works on compute shader,
WebRTX is not hardware ray tracing and is a pure compute shader implementation. This means WebRTX works as long as your browser supports WebGPU (only tested on Chrome so far).
but again without GPGPU BVH Building apparently
The building of BVH happens on host which is then flattened into a buffer for stackless traversal on GPU.
the implementation is tricky, of course although we can say that this is a professional approach (in that tracing can be written on GLSL shaders, even if it is not supported in drivers), but taking into account the CPU’s BVH build, this is of course still quite useless …