Morten Vassvik

Extended my topology libs to work on non-Euclidean domains (spherical, toroidal, etc.) by turning mesh edges into geodesics. Below: Bridson's Poisson disk sampling across different domains.

#indiedev #gamedev #computergraphics #computationalgeometry #topology

Yes

Some progress on the VAT export in #illugen. Complex mesh animations can be imported in game engines ... (made with an internal build)
#VFXFriday #realtimevfx #vfx

Meaning trying to detect inside/out by any means on a mesh that isn't very "nice" is rough, and things that are usually out of sight out mind to an artist or someone who's made the mesh doesn't exactly make your job of voxelizing such meshes easier :D

Therein lies the madness that is sloppy meshes

I need to try some hysteresis for my sparse sim at some point

Few stills

1664x1568x576 bounding box, 536M active voxels. Roughly 65% sparsity.

Dimmer RGB colors

Bright Red-Blue-Yellow primaries

Some tests I did with hacking in mixbox (github.com/scrtwpns/mix...) support today

Left: RGB blending
Right: Mixbox blending

Interestingly I there's a lot to take from this for smoke scattering, which generally has an absorption component, so subtractive color mixing makes sense I think?

Tile* level

Time level yeah, and I have large tiles (so there's not a lot of tiles, max 64K by design). And I have a wave size of at least 32 (never heard of anything less, I swear!), so fetching 32 values at once and distributing them across a wave sort of fits nicely

A graph

Singly linked lists? Doubly linked lists? On the GPU?

I use 27-way linked lists on the GPU, and it's good and highly appropriate!

Definitely skipping US conferences for the foreseeable future:(

A cool experiment would actually be to have these, but view them under different colored light

Fog is <color> if it scatters <color> light. It is not <color> if it absorbs it.

What do you mean what color is the fog if there's no light?

Setting/defining a fog color is probably the easier part *nervous laughter*

PBR for fog?

Normals? Metallic? Diffuse? Specular? Roughness? Concepts thought up by the deranged

I basically just use it as an alternative to Github Gist, and with its files stored in my Dropbox I can have the same files on both of my PCs. The ability to link files and such is cool and all, but less useful I feel.

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🤔🫣🫠

On the other hand, grinding forever can also end up shedding new light on a problem which ends up opening the door for a different solution, or even open up for new approaches or make different problems relevant alltogether. Not entirely economical for most people though

What do you mean I can't tunnel vision on this one problem over and over for weeks on end? I definitely don't do that...

Some times it helps to get back to it later though if possible, but it's hard to let go. 🫠

I'm surprised how quickly I got in and out the door this time. Probably didn't take me more than a minute 😅

Same for sinh(x)/x, the division simply goes away and you're left with really neat coefficients that rapidly goes to zero. Something like 1/(2n+1)!

Apparently the thing I was ultimately after is often called "exprel". Naively you'd default to just doing expm1(x)/x, but interestingly the denominator happens to cancel when you expand, and what looked like a 0/0 simply isn't anymore. Made me more appreciative of not jumping to conclusion too soon