Search found 113 matches

by toxie
Fri Feb 10, 2017 2:50 pm
Forum: Data Sets
Topic: Benchmark data sets
Replies: 3
Views: 327

Re: Benchmark data sets

There was an attempt once to have a standardized environment where one could plug "any" ray tracing engine in and test exactly the same stuff:
http://bwfirt.sourceforge.net/
by toxie
Thu Feb 09, 2017 4:22 pm
Forum: Tools, Demos & Sources
Topic: Implementation for Blue-noise Dithered Sampling
Replies: 21
Views: 1719

Re: Implementation for Blue-noise Dithered Sampling

This is from one of my private projects where i included the masks some months ago, using 3 dimensions to compute SSAO, left with 64x64 tiled blue noise, right with 64x64 tiled white noise (but both using the same QMC set for the samples in each pixel then). For such a case it can make a really nice...
by toxie
Thu Feb 09, 2017 3:54 pm
Forum: Visuals
Topic: Glitch Pictures anyone?
Replies: 65
Views: 65958

Re: Glitch Pictures anyone?

spooky, but also extremely artsy..
by toxie
Thu Feb 09, 2017 10:51 am
Forum: Tools, Demos & Sources
Topic: Implementation for Blue-noise Dithered Sampling
Replies: 21
Views: 1719

Re: Implementation for Blue-noise Dithered Sampling

What do you compare it against in that picture?

EDIT: maybe also due to the semi-magical weighting function, smaller tiles are better? if thats the case then one could also have different small tiles that are then used "randomly" over the screen to get rid of the tiling patterns.
by toxie
Thu Feb 02, 2017 4:23 pm
Forum: Tools, Demos & Sources
Topic: Implementation for Blue-noise Dithered Sampling
Replies: 21
Views: 1719

Re: Implementation for Blue-noise Dithered Sampling

True, unless one uses a distribution over the screen instead of per-pixel for example (and then merges the two schemes). So maybe i was a bit distracted here by my "own" usecases and experiments, sorry. ;) And then you sacrifice that part in addition to potential quality loss for these &qu...
by toxie
Thu Feb 02, 2017 10:53 am
Forum: Tools, Demos & Sources
Topic: Implementation for Blue-noise Dithered Sampling
Replies: 21
Views: 1719

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: 21
Views: 1719

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: 21
Views: 1719

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: 21
Views: 1719

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: 15271

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

too bad.. anybody else? :)

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