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matt swoboda

@mattswoboda

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Graphics & vfx coder; creator/founder/developer of Notch (@notchvfx); democoder. https://t.co/GYswx3dAuz for more finished pieces.

London, UK
Joined January 2011
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@mattswoboda
matt swoboda
24 days
@mmalex @iquilezles when the film industry makes a format/SDK and only expects 3 companies in the world to ever compile it
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@mattswoboda
matt swoboda
1 month
@vassvik @guitio2002 one thing I wondered about, do you use the same sparse tiles for density grid as velocity grid, or a different one?
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@mattswoboda
matt swoboda
1 month
@vassvik @guitio2002 Only on the coarsest levels, when you're at 64x or so. for really sparse or wide grids it's probably less efficient, for typical case more reasonable?
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@mattswoboda
matt swoboda
1 month
@guitio2002 @vassvik this is for volumes, we generate sample points along the ray march which are lit after and accumulated
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@mattswoboda
matt swoboda
1 month
@vassvik @guitio2002 lighting is another game all together, we don't do any light calculation to the grid now, it's all in ray.
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@mattswoboda
matt swoboda
1 month
@vassvik @guitio2002 you're right, as I go down the lowest levels of the multi grid I just resolve to a full grid as it ends up cheaper than staying in tiles when the res is so low. At 4x4x4 you can read in 8x8x8 and do 2 steps in ls.
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@mattswoboda
matt swoboda
1 month
@vassvik @guitio2002 I was wondering about the 32x32x32 tile size. Do you gain anything significant on eg pressure or advection passes on a larger size v 8x8x8?
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@mattswoboda
matt swoboda
1 month
@vassvik @guitio2002 I've been using 8x8x8 for sparse volumes for a few years now. Mainly because it was a good fit for a compute shader.. The lds fetching in the context of a sparse solver is a bit more involved at the boundaries reading into other tiles
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@mattswoboda
matt swoboda
1 month
@guitio2002 ha, I've been doing this method for a while too for volumes, 8x8x8 tile fetching 10x10x10 into LDS, but Morten's fetching code looks fancier than mine
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@mattswoboda
matt swoboda
8 months
RT @bcmerchant: This Australian data scientist has some thoughts about AI and the current state of his industry ht…
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@mattswoboda
matt swoboda
8 months
I'm doing Siggraph Real-Time Live this year with this nice group of people. coming to a stage in denver soon
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@mattswoboda
matt swoboda
9 months
@SebAaltonen back in the mid 2000s we all tried to model the film camera (even for first person........) via overdone dof/bloom/motionblur mainly because of the idea that "it makes things look more realistic". but we grew out of it by now. hopefully
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@mattswoboda
matt swoboda
9 months
@bonzajplc @h3r2tic the best and worst thing i ever did for realtime dof was to write a side by side raytraced dof. helps massively to have a ground truth available on demand but also a cause of much disappointment
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@mattswoboda
matt swoboda
9 months
@biovf @SebAaltonen @speedwago great perf analysis tools helped a lot
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@mattswoboda
matt swoboda
11 months
RT @notchvfx: We are delighted that our co-founder and lead developer @mattswoboda will be speaking at this year’s Stage of Tomorrow Confer…
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@mattswoboda
matt swoboda
1 year
@rms80 paint brushes are also dead
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@mattswoboda
matt swoboda
1 year
come work with us! qa/support roles open
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@mattswoboda
matt swoboda
1 year
Tweet media one
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@mattswoboda
matt swoboda
1 year
@mrdoob overrated: making things free artificially using cash pumped in from elsewhere to try to disrupt the market in an ultimately unsustainable and potentially industry-damaging way. underrated: self-sustainability through a reasonable, fair revenue model
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