Olivier Therrien @volfaze

R&D Graphics Programmer at CDRIN cdrin.com/blogue Québec, Canada Joined July 2016

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Olivier Therrien @volfaze

5 months ago

@SoftEngineer Also @Mirko_Salm released an improved algorithm that is more physically accurate: shadertoy.com/view/lfdBWn

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Olivier Therrien @volfaze

5 months ago

@SoftEngineer We published a paper to fix exactly the problems that you mention at the end of the writeup: arxiv.org/pdf/2301.11376 Here are a few implementations: github.com/cdrinmatane/SS… shadertoy.com/view/dsGBzW

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Mr F @guycalledfrank

6 months ago

Meanwhile Suslik (Alexander Sannikov) is improving Radiance Cascades for the general 3D case: youtube.com/watch?v=rG2aok…

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Capsaicin is not just for tacos, it's also our developer rendering framework! v1.3 is out now: 🌶️ Added heat with GI-1.2, which includes multiple-bounce indirect lighting. 🌶️ HDR support with spicier tone mapping. And much, much more: gpuopen.com/learn/gi-1-2-m…

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Florisium @florisium

9 months ago

A bit technical thread 🧵 I’ve been improving the in-game ambient occlusion system - and ended up with something I call: Blob-based Analytical Ambient Occlusion on Primitives Here’s what it does to the final image: (more examples later in the thread) (1/16)

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Three.js @threejs

10 months ago

SSGINode: New node for screen-space global illumination github.com/mrdoob/three.j…

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Mirko @Mirko_Salm

11 months ago

Distant light sampling for GT-VBAO with different quality options: shadertoy.com/view/wc2SzR (+ the math: shadertoy.com/view/wcsXDN)

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Mike Turitzin @miketuritzin

12 months ago

Nice li'l new video covering (some of) the history of SSAO algorithms: youtube.com/watch?v=g4or1f…

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Olivier Therrien @volfaze

a year ago

@AlanPereiraArt @bjornornorn @Mirko_Salm There is also a blog post and slides: cdrinmatane.github.io/posts/ssaovb-c…

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Olivier Therrien @volfaze

a year ago

@AlanPereiraArt @bjornornorn @Mirko_Salm Paper is here: arxiv.org/abs/2301.11376

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Björn Ottosson - making Island Architect @bjornornorn

a year ago

I'm working on a AO and GI for my game. For that reason I'm extending @Mirko_Salm's GT-VBAO (based on @volfaze's work). I've done two things so far: - Sampling a distant light instead of computing AO - Added a heuristic for estimating occluder thickness Details and links below

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Olivier Therrien @volfaze

2 years ago

@Mirko_Salm Nice! For the cosine weighted version, if you do a dot product with the tangent (of projected normal) instead of view, I think samples would already be in cosine space and won't require acos

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Olivier Therrien @volfaze

2 years ago

@NickChapmn @Mirko_Salm has worked on a more physically correct version of the algorithm, maybe he has some thoughts on this.

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Olivier Therrien @volfaze

2 years ago

@NickChapmn (3/3) Maybe a more accurate way to do this would be to reweight the final contribution so it adds up to 1 (untested). Just removing the term and assuming the sample covers the entire sector is certainly more correct.

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Mirko @Mirko_Salm

2 years ago

GT-VBGI: Ground Truth Visibility Bitmask Global Illumination: shadertoy.com/view/lfdBWn. image: GT-VBGI (left) vs. Reference (right). 2. image: the same as the 1., but converged. GT-VBGI matches the results of a brute force ray-marcher.