Search found 118 matches

by toxie
Thu Feb 02, 2017 10:53 am
Forum: Tools, Demos & Sources
Topic: Implementation for Blue-noise Dithered Sampling
Replies: 26
Views: 16024

Re: Implementation for Blue-noise Dithered Sampling

Yup, that too, of course.
by toxie
Thu Feb 02, 2017 10:44 am
Forum: Tools, Demos & Sources
Topic: Implementation for Blue-noise Dithered Sampling
Replies: 26
Views: 16024

Re: Implementation for Blue-noise Dithered Sampling

To be honest, i don't even know if it can bring any real benefit for anything that is not directly visible from the camera. After all one exploits the human visual system here, so the higher dimensions/bounces should be better tackled via a properly distributed sample set (e.g. most likely some mode...
by toxie
Mon Jan 30, 2017 4:08 pm
Forum: Tools, Demos & Sources
Topic: Implementation for Blue-noise Dithered Sampling
Replies: 26
Views: 16024

Re: Implementation for Blue-noise Dithered Sampling

I set the tile size to 64, iterations to 65536 * 2 and depth to 10 (for: lens, pixel, light sample 1, diffuse bounce, light sample 2); in that case the code takes about 1.5 *hours* to execute on a 12-core Xeon system (admittedly, old Xeons)... How long did your 128x128 tiles take? :) Would be inter...
by toxie
Mon Jan 30, 2017 3:14 pm
Forum: Tools, Demos & Sources
Topic: Implementation for Blue-noise Dithered Sampling
Replies: 26
Views: 16024

Re: Implementation for Blue-noise Dithered Sampling

There are some minor issues getting this to work with MSVC:
a) The _mm_andnot_si128 should be a _mm_andnot_ps
b) a separate code path that uses _aligned_malloc instead of posix_memalign on MSVC
c) same for free (_aligned_free)
Maybe you can patch this then.. And thanks for sharing..
by toxie
Mon May 30, 2016 3:52 pm
Forum: Scratchpad
Topic: Job offer at NVIDIA (ARC/OptiX Team) (US or Europe)
Replies: 3
Views: 20094

Re: Job offer at NVIDIA (ARC/OptiX Team) (US or Europe)

too bad.. anybody else? :)
by toxie
Wed May 18, 2016 4:01 pm
Forum: Scratchpad
Topic: Job offer at NVIDIA (ARC/OptiX Team) (US or Europe)
Replies: 3
Views: 20094

Job offer at NVIDIA (ARC/OptiX Team) (US or Europe)

This time around the offer is a bit more general, so please don't be scared by the job description/expertise requirements, which might seem a bit excessive at first: https://nvidia.wd5.myworkdayjobs.com/en-US/NVIDIAExternalCareerSite/job/US-CA-Santa-Clara/Senior-Software-Engineer_JR1901998-1 (or con...
by toxie
Tue Apr 05, 2016 2:36 pm
Forum: General Development
Topic: Csillámtrace - my new graphics engine
Replies: 153
Views: 89694

Re: Csillámtrace - my new graphics engine

keep us updated.. and maybe some pictures incl. framerates?
by toxie
Wed Sep 30, 2015 1:59 pm
Forum: General Development
Topic: Separate GPU compute kernels vs. a single GPU kernel
Replies: 10
Views: 9331

Re: Separate GPU compute kernels vs. a single GPU kernel

Opinions still differ on this topic. As an example, Chaos Group is not (yet?) convinced and chose a different way of speeding up their megakernel: http://dl.acm.org/citation.cfm?id=2668941 iray on the other hand uses wavefront successfully (see for example http://on-demand.gputechconf.com/siggraph/2...
by toxie
Thu Sep 24, 2015 2:02 pm
Forum: General Development
Topic: Sobol' sequences
Replies: 11
Views: 10840

Re: Sobol' sequences

Thats another good question. :) Sobol' is still top notch, but it comes with these nasty rectangular patterns in the projections by design. So no matter which construction variant you use, you will always have to scramble it, unless you do not care about intermediate patterns. As you say, on the lon...

Go to advanced search