Search found 59 matches

by mpeterson
Fri Jul 31, 2020 2:29 pm
Forum: General Development
Topic: bvh build time (CPU vs opencl vs optix vs RTX)
Replies: 3
Views: 208

Re: bvh build time (CPU vs opencl vs optix vs RTX)

hi, embree is for shure not the fastest bvh builder around
but beating a low quality gpu-based bvh builder is impossible
on cpus today.
by mpeterson
Sat Sep 07, 2019 2:16 pm
Forum: General Development
Topic: nvidia rtx perf.
Replies: 2
Views: 1973

Re: nvidia rtx perf.

jbikker wrote:
Thu Sep 05, 2019 5:31 pm

4G is using the latest Lighthouse 2, https://github.com/jbikker/lighthouse2 .
yes, i had a look and browsed thru the code. good work as always. mp
by mpeterson
Thu Sep 05, 2019 3:29 pm
Forum: General Development
Topic: nvidia rtx perf.
Replies: 2
Views: 1973

nvidia rtx perf.

as the discussion is going on, day by day, here is a statement: 10grays is a tech. possible limit for non-realistic scenes: that is: a single triangle without shading. in practice you get something around 1-3 grays and cannot do something useful with it without any filtering as post-proc. these numb...
by mpeterson
Thu Aug 16, 2018 8:47 am
Forum: Links & Papers
Topic: Claims of real-time Ray Tracing on mobile hardware
Replies: 2
Views: 2998

Re: Claims of real-time Ray Tracing on mobile hardware

know it. nothing special to think about. more or less simple crap.
by mpeterson
Mon Jun 11, 2018 11:57 am
Forum: Visuals, Tools, Demos & Sources
Topic: My introduction
Replies: 11
Views: 6146

Re: My introduction

hi, i must warn you: this forum is more or less dead.
by mpeterson
Thu Mar 22, 2018 3:00 pm
Forum: General Development
Topic: DXR
Replies: 6
Views: 6416

Re: DXR

doing this now > 20 years all this ads seems to be odd (at least for me).
every time i look into the details of impl. its boring crap and never optimized for the used hw.

so the good old times are over since years...
by mpeterson
Wed Jan 31, 2018 12:18 pm
Forum: Links & Papers
Topic: Stackless MBVH Traversal for CPU, MIC and GPU Ray Tracing
Replies: 15
Views: 23335

Re: Stackless MBVH Traversal for CPU, MIC and GPU Ray Tracing

again: this is 10 years old crap. go with state of the art -> google is your friend !
by mpeterson
Wed Nov 29, 2017 9:36 am
Forum: General Development
Topic: Path tracing benchmark
Replies: 3
Views: 8149

Re: Path tracing benchmark

just a quick update: we did some tests on intels knights mill. to make it short: the machine is boring.

no perf. progress at all. all the vector ext. are simple crap. for graphics intel seems to be a dead end. gpus will dominate the next years.

so all the cpu stuff was wasted time.



mp
by mpeterson
Tue Nov 07, 2017 9:21 am
Forum: Visuals, Tools, Demos & Sources
Topic: SIMDy
Replies: 7
Views: 14901

Re: SIMDy

sorry, but absolutely useless. the n+1 invocation of an "auto-vectorizer" ... and pathon ? what is it really good for ?
by mpeterson
Wed Jan 25, 2017 1:16 pm
Forum: General Development
Topic: Path tracing benchmark
Replies: 3
Views: 8149

Path tracing benchmark

It took some time after we build up our first coherent traversal kernel for avx512 http://ompf2.com/viewtopic.php?f=3&t=2103 to get a competitive incoherent kernel ready for prime time. Here it is ! For the benchmark we used a full pipeline available easily on any architecture: 1) camera ray generat...