DougLilliequist

PBR shader wrapped up. Diffuse and Specular maps are generated via cmgen CLI

#webgpu

Sincerely #three.js, but if you don’t like to work with fixed pipelines and low level stuff, you are not an advanced user.

Finally found the cause: override doesn't seem to work with compute shaders in Safari.

This sucks. None of my prior WebGPU sketches work on the new Safari…but works perfectly fine on Chrome…

Also, I’ll sound very harsh: do yourselves a favour and drop any projects or ponder on solutions that are based on WebGL.

It is outdated, performs horribly and requires tedious hacks to MAYBE get what you want.

With WebGPU, you can think about and solve problems in a more reasonable fashion

Not that I would consider myself an expert at this point (yet), but PBR is surprisingly straightforward!

The hassle is generating the assets needed for IBL.

All right: time to learn what is actually going on behind a PBR shader and make one myself.

Marching cubes experiment made with my own WebGPU framework 🗿🌊 Hope you'll find it fun and inspiring (and satisfyingly disgusting 🫠)!

dougllab.netlify.app/marchingcubes

#webgpu #creativecoding

Very nice. Removed an awkward copyBufferToTexture and now my 3D blurring is even faster! Guess I'm ready to start diving in to marching cubes...

#webgpu

a man with glasses and a mustache is sitting in front of a sign ALT: a man with glasses and a mustache is sitting in front of a sign

Have to try this, but after reading some fine print…storage textures can eventually be used with samplers depending on the bindings.

This is awesome, but this means i have some hefty refactoring to do on my fluids and shadow volumes…

Raymarching volumetric lighting is a bit slow… :(((

My voxelizer is working! 128^3 voxels < ~150us. 256^3 around < ~800us (on my M1Pro)

Ironically, visualising the voxels is heavier than the voxelizer itself...

*cackles manically*

#webgpu

Too much at work. Have some fun concepts I want to explore for a few days during my vacation.

Cool accident while updating a previously SD 1.5 based workflow to SDXL / HotshotXL.

Not a fan of how all the motion models are aiming for "perfection" and in my workflow's case, I need AnimateDiff + frame interpolators still!

#comfyui #aiart

If there is anything that worries me, it is not “AI taking our jobs”.

In the end, an experienced dev will know what to prompt compared to one with less experience.

I’m more concerned about project deadlines becoming more and more unrealistic due to the false belief that “AI can do everything”

This. Been through a ton of stressful moments and project crunches for this very reason.

WebGPU support.

125k flocking boids
particle volume shadows
3d fluids (32^3) using hand tracker as cursor

120 fps on M1 pro

Learned a ton doing this project, but I'm bored of particles at this point 😅 Hopefully this will be fun and inspiring to whomever tries this out!
dougllab.netlify.app/birds

#webgpu

Software rasterised points using compute perhaps? 🤓

Google mediapipe!

Kindoff getting there! Using pressure makes it more interesting...

Maybe a habit thing, but interacting in a 3D space feels like you need to "master" the interaction which isn't too fun. More parameter tweaking! 🪛

#webgpu

Ah! You *can* use samplers in compute shaders! Just have to make sure you are using textureSampleLevel!

#webgpu

After this practice project I'll be going back to soft-bodies. Particles are getting quite repetitive now...

ouuuufffff...the compression is horrible......

Back at it! Integrating my 3D fluids into my original boid simulation. Lots of finetuning is needed and scaled up the particles to avoid compression 😅 Doing so reveals a fair bit of aliasing...

Also learned that using samplers is not allowed in compute shaders :(((((

#webgpu #creativecoding

Same, takes a fair bit of calibration with media-pipe…not to mention every hand is different…could maybe to a fancy average bbox size after N frames to make it even more accurate 🤓

Fully doable! Quality however is GPU bound as I need a lot more iterations and voxels…

Few subtle error fixes later and now it looks even better! 🌊

#webgpu #creativecoding

With gradient subtraction (familiar fluid look) 🌊 and with my setup it is easy to toggle between the two behaviors  💨

#webgpu

Just to show I'm not bluffing 🤓

#webgpu

Just need some calibration, but the handtracking is doing wonders!

For the Z, I compute a 2D bounding box and use the area as the Z position (far away == sm0l hand, big hand == close)

#webgpu