Addy
@adellari.bsky.social
Physics enthusiast
Graphics at Apple, formerly research at Reality Labs
Graphics at Apple, formerly research at Reality Labs
Pinned
Addy
@adellari.bsky.social
· Oct 23
adellari - Overview
Astrophysics nerd doing computer graphics and XR Interactions
- adellari
github.com
Hi, I’m Addy! I’m interested in physics, rendering, and astronomy.
I’m a beginner at computer graphics and still learning from this great community.
Last year I wrote my first pathtraced renderer for iOS and I’m now learning FEM for 3d fluid simulation.
github.com/adellari
I’m a beginner at computer graphics and still learning from this great community.
Last year I wrote my first pathtraced renderer for iOS and I’m now learning FEM for 3d fluid simulation.
github.com/adellari
Reposted by Addy
interesting - this spectral renderer is a hop, skip, and a jump from simulated crystallography (someone I know recently did some work related to simulated crystal growth jbaker.graphics/writings/cry...) - this is a physical, real process used to identify crystals via their diffraction patterns
December 19, 2025 at 12:47 AM
interesting - this spectral renderer is a hop, skip, and a jump from simulated crystallography (someone I know recently did some work related to simulated crystal growth jbaker.graphics/writings/cry...) - this is a physical, real process used to identify crystals via their diffraction patterns
Reposted by Addy
My "No Graphics API" blog post is live! Please repost :)
www.sebastianaaltonen.com/blog/no-grap...
I spend 1.5 years doing this. Full rewrite last summer and another partial rewrite last month. As Hemingway said: "First draft of everything is always shit".
www.sebastianaaltonen.com/blog/no-grap...
I spend 1.5 years doing this. Full rewrite last summer and another partial rewrite last month. As Hemingway said: "First draft of everything is always shit".
No Graphics API — Sebastian Aaltonen
Graphics APIs and shader languages have significantly increased in complexity over the past decade. It’s time to start discussing how to strip down the abstractions to simplify development, improve pe...
www.sebastianaaltonen.com
December 16, 2025 at 6:52 PM
My "No Graphics API" blog post is live! Please repost :)
www.sebastianaaltonen.com/blog/no-grap...
I spend 1.5 years doing this. Full rewrite last summer and another partial rewrite last month. As Hemingway said: "First draft of everything is always shit".
www.sebastianaaltonen.com/blog/no-grap...
I spend 1.5 years doing this. Full rewrite last summer and another partial rewrite last month. As Hemingway said: "First draft of everything is always shit".
Reposted by Addy
If you want to do something like this, why not buy a $150k home in a small town in Italy, France, Spain, or Mexico, instead of having nine people share one bathroom after they eat at a restaurant called "Stinky's?"
December 13, 2025 at 8:45 AM
If you want to do something like this, why not buy a $150k home in a small town in Italy, France, Spain, or Mexico, instead of having nine people share one bathroom after they eat at a restaurant called "Stinky's?"
Reposted by Addy
Timeline cleanse: Antarctic sun dogs/halo version. January 2024, RAICA ice core project at Canisteo Peninsula, West Antarctica supported by Korea Polar Research Institute and US National Science Foundation. 🌞 ❄️
December 10, 2025 at 12:17 AM
Timeline cleanse: Antarctic sun dogs/halo version. January 2024, RAICA ice core project at Canisteo Peninsula, West Antarctica supported by Korea Polar Research Institute and US National Science Foundation. 🌞 ❄️
Reposted by Addy
Real-Time Polygonal-Light Shading with Linearly Transformed Cosines
Adam Badke implemented LTC in Gigi and it is now in the Gigi browser.
Adam's Repo: github.com/b1skit/LTCAr...
LTC paper: eheitzresearch.wordpress.com/415-2/
Adam Badke implemented LTC in Gigi and it is now in the Gigi browser.
Adam's Repo: github.com/b1skit/LTCAr...
LTC paper: eheitzresearch.wordpress.com/415-2/
December 9, 2025 at 7:13 PM
Real-Time Polygonal-Light Shading with Linearly Transformed Cosines
Adam Badke implemented LTC in Gigi and it is now in the Gigi browser.
Adam's Repo: github.com/b1skit/LTCAr...
LTC paper: eheitzresearch.wordpress.com/415-2/
Adam Badke implemented LTC in Gigi and it is now in the Gigi browser.
Adam's Repo: github.com/b1skit/LTCAr...
LTC paper: eheitzresearch.wordpress.com/415-2/
Reposted by Addy
Spatial warps remap the positions used to sample an object’s distance field – effectively bending the space around the object.
This illustration shows that process in action using a twist operation.
This illustration shows that process in action using a twist operation.
December 4, 2025 at 10:12 PM
Spatial warps remap the positions used to sample an object’s distance field – effectively bending the space around the object.
This illustration shows that process in action using a twist operation.
This illustration shows that process in action using a twist operation.
Reposted by Addy
Decided to go back to making Shadertoy fluid sims for for a bit.
This time I improved my particle clustering cellular automaton SPH fluid sim to support multiple species particle merging and splitting. Also some fine tuning of the physics.
shadertoy.com/view/tfyyWD
This time I improved my particle clustering cellular automaton SPH fluid sim to support multiple species particle merging and splitting. Also some fine tuning of the physics.
shadertoy.com/view/tfyyWD
December 3, 2025 at 4:19 AM
Decided to go back to making Shadertoy fluid sims for for a bit.
This time I improved my particle clustering cellular automaton SPH fluid sim to support multiple species particle merging and splitting. Also some fine tuning of the physics.
shadertoy.com/view/tfyyWD
This time I improved my particle clustering cellular automaton SPH fluid sim to support multiple species particle merging and splitting. Also some fine tuning of the physics.
shadertoy.com/view/tfyyWD
Reposted by Addy
In the richest city in the richest country on the planet, the thing we can’t afford is to forget those who are left hungry.
November 27, 2025 at 9:50 PM
In the richest city in the richest country on the planet, the thing we can’t afford is to forget those who are left hungry.
Reposted by Addy
First test with ReSTIR, just for direct lighting for now. Figuring out the weights was a bit finicky, ngl. This scene is a bit too easy since all light sources are in the same spot, gonna try placing a bunch of light sources tomorrow.
November 18, 2025 at 9:50 PM
First test with ReSTIR, just for direct lighting for now. Figuring out the weights was a bit finicky, ngl. This scene is a bit too easy since all light sources are in the same spot, gonna try placing a bunch of light sources tomorrow.
Reposted by Addy
POV: you are a young woman celebrating a recent academic success
November 17, 2025 at 7:20 PM
POV: you are a young woman celebrating a recent academic success
Reposted by Addy
Trying to implement (incorrect, hacky) reservoir merging and visualizing the reservoir contents, look way more modern-arty than it should
November 14, 2025 at 6:19 PM
Trying to implement (incorrect, hacky) reservoir merging and visualizing the reservoir contents, look way more modern-arty than it should
Reposted by Addy
RGB rendering is founded on lies and perpetuated by misconceptions about the practicality of spectral rendering. My new blog post series describes a spectral GPU path tracer. Part 1 focuses on how to make it work with existing RGB assets.
momentsingraphics.de/SpectralRend...
momentsingraphics.de/SpectralRend...
November 6, 2025 at 6:46 PM
RGB rendering is founded on lies and perpetuated by misconceptions about the practicality of spectral rendering. My new blog post series describes a spectral GPU path tracer. Part 1 focuses on how to make it work with existing RGB assets.
momentsingraphics.de/SpectralRend...
momentsingraphics.de/SpectralRend...
Reposted by Addy
Reposted by Addy
might be one of the funniest videos i’ve ever seen
October 26, 2025 at 7:27 PM
might be one of the funniest videos i’ve ever seen
Reposted by Addy
Just heard Jeru the Damaja is also guesting at tonight's Pharcyde/Souls of Mischief show at the Kentish Town Forum. 90s hiphop me can't wait...
a man standing on a stage with the words ladies and gentlemen written on the screen
ALT: a man standing on a stage with the words ladies and gentlemen written on the screen
media.tenor.com
October 17, 2025 at 4:15 PM
Just heard Jeru the Damaja is also guesting at tonight's Pharcyde/Souls of Mischief show at the Kentish Town Forum. 90s hiphop me can't wait...
Reposted by Addy
What I don't have in experience, I make up for in integrity.
And what Andrew Cuomo lacks in integrity, he could never make up for with experience.
And what Andrew Cuomo lacks in integrity, he could never make up for with experience.
October 16, 2025 at 11:16 PM
What I don't have in experience, I make up for in integrity.
And what Andrew Cuomo lacks in integrity, he could never make up for with experience.
And what Andrew Cuomo lacks in integrity, he could never make up for with experience.
Reposted by Addy
Collaborated with Milkdrop to make a pack of 800 audio-reactive shaders.
Designed for VJs and visual artists. Anybody can use them with the open-source XorPlayer and Spout.
They work without audio too, great as moving backgrounds! Download:
milkdrop3.com/XorDev
Have fun!
Designed for VJs and visual artists. Anybody can use them with the open-source XorPlayer and Spout.
They work without audio too, great as moving backgrounds! Download:
milkdrop3.com/XorDev
Have fun!
October 15, 2025 at 3:16 PM
Collaborated with Milkdrop to make a pack of 800 audio-reactive shaders.
Designed for VJs and visual artists. Anybody can use them with the open-source XorPlayer and Spout.
They work without audio too, great as moving backgrounds! Download:
milkdrop3.com/XorDev
Have fun!
Designed for VJs and visual artists. Anybody can use them with the open-source XorPlayer and Spout.
They work without audio too, great as moving backgrounds! Download:
milkdrop3.com/XorDev
Have fun!
Reposted by Addy
My new blog post is out! In this new post I go into detail in how I implemented my D3D12/Vulkan/Metal RHI in my game engine Kaleidoscope. Link in replies!
October 8, 2025 at 10:36 PM
My new blog post is out! In this new post I go into detail in how I implemented my D3D12/Vulkan/Metal RHI in my game engine Kaleidoscope. Link in replies!
Reposted by Addy
Jonathan Rinderknecht, a white man, was charged with starting the Palisades Fire. But on X, the company's news summary tab shows a photo of a black man.
October 8, 2025 at 5:10 PM
Jonathan Rinderknecht, a white man, was charged with starting the Palisades Fire. But on X, the company's news summary tab shows a photo of a black man.
Reposted by Addy
signs of life on my attempt at shooting rays from a light source to eventually hit a film plane... it's spectral but the only materials so far are a perfectly mirrored mesh with slightly grey albedo, laid out in blender... need to add in refraction with ior dependence, and this will be very cool
October 8, 2025 at 5:59 AM
signs of life on my attempt at shooting rays from a light source to eventually hit a film plane... it's spectral but the only materials so far are a perfectly mirrored mesh with slightly grey albedo, laid out in blender... need to add in refraction with ior dependence, and this will be very cool
Reposted by Addy
If you are in the PNW and freaking about all the recent announcements and feeling like there is nothing you can do?
Donate to local legal resources for immigrants. The legal defense needs to move quickly in these cases before the defendants are moved. No Actblue!
@nwirp.bsky.social
www.nwirp.org
Donate to local legal resources for immigrants. The legal defense needs to move quickly in these cases before the defendants are moved. No Actblue!
@nwirp.bsky.social
www.nwirp.org
Home | Northwest Immigrant Rights Project
Northwest Immigrant Rights Project promotes justice by defending and advancing the rights of immigrants through direct legal services, systemic/Users/miguel/Local Documents/nwirp-temp/index.html advoc...
www.nwirp.org
September 30, 2025 at 5:33 PM
If you are in the PNW and freaking about all the recent announcements and feeling like there is nothing you can do?
Donate to local legal resources for immigrants. The legal defense needs to move quickly in these cases before the defendants are moved. No Actblue!
@nwirp.bsky.social
www.nwirp.org
Donate to local legal resources for immigrants. The legal defense needs to move quickly in these cases before the defendants are moved. No Actblue!
@nwirp.bsky.social
www.nwirp.org
Reposted by Addy
"Quasar 2"
for(float i,z,d,s;i++<7e1;o+=vec4(z,2,s,1)/s/d)
{vec3 p=z*normalize(FC.rgb*2.-r.xyy),a;p.z+=9.;a=mix(dot(a-=.57,p)*a,p,cos(s-=t))-sin(s)*cross(a,p);s=sqrt(length(a.xz-a.y));
for(d=1.;d++<9.;a+=sin(a*d-t).yzx/d);z+=d=length(sin(a)+dot(a,a/a)*.2)*s/2e1;}
o=tanh(o/2e3);
for(float i,z,d,s;i++<7e1;o+=vec4(z,2,s,1)/s/d)
{vec3 p=z*normalize(FC.rgb*2.-r.xyy),a;p.z+=9.;a=mix(dot(a-=.57,p)*a,p,cos(s-=t))-sin(s)*cross(a,p);s=sqrt(length(a.xz-a.y));
for(d=1.;d++<9.;a+=sin(a*d-t).yzx/d);z+=d=length(sin(a)+dot(a,a/a)*.2)*s/2e1;}
o=tanh(o/2e3);
September 19, 2025 at 12:05 AM
"Quasar 2"
for(float i,z,d,s;i++<7e1;o+=vec4(z,2,s,1)/s/d)
{vec3 p=z*normalize(FC.rgb*2.-r.xyy),a;p.z+=9.;a=mix(dot(a-=.57,p)*a,p,cos(s-=t))-sin(s)*cross(a,p);s=sqrt(length(a.xz-a.y));
for(d=1.;d++<9.;a+=sin(a*d-t).yzx/d);z+=d=length(sin(a)+dot(a,a/a)*.2)*s/2e1;}
o=tanh(o/2e3);
for(float i,z,d,s;i++<7e1;o+=vec4(z,2,s,1)/s/d)
{vec3 p=z*normalize(FC.rgb*2.-r.xyy),a;p.z+=9.;a=mix(dot(a-=.57,p)*a,p,cos(s-=t))-sin(s)*cross(a,p);s=sqrt(length(a.xz-a.y));
for(d=1.;d++<9.;a+=sin(a*d-t).yzx/d);z+=d=length(sin(a)+dot(a,a/a)*.2)*s/2e1;}
o=tanh(o/2e3);
Reposted by Addy
"Quasar"
for(float i,z,d,s;i++<1e2;o+=vec4(z,4,1,1)/d)
{vec3 p=z*normalize(FC.rgb*2.-r.xyy),a;p.z+=9.;s=length(a=mix(dot(a+=.57,p)*a,p,cos(s-=t))-sin(s)*cross(a,p));
for(d=1.;d++<9.;a+=sin(a*d-t).yzx/d);
z+=d=length(sin(a-t)+.7)*length(p.xy-p.z)/4e1;}
o=tanh(o/2e4);
for(float i,z,d,s;i++<1e2;o+=vec4(z,4,1,1)/d)
{vec3 p=z*normalize(FC.rgb*2.-r.xyy),a;p.z+=9.;s=length(a=mix(dot(a+=.57,p)*a,p,cos(s-=t))-sin(s)*cross(a,p));
for(d=1.;d++<9.;a+=sin(a*d-t).yzx/d);
z+=d=length(sin(a-t)+.7)*length(p.xy-p.z)/4e1;}
o=tanh(o/2e4);
September 18, 2025 at 11:34 PM
"Quasar"
for(float i,z,d,s;i++<1e2;o+=vec4(z,4,1,1)/d)
{vec3 p=z*normalize(FC.rgb*2.-r.xyy),a;p.z+=9.;s=length(a=mix(dot(a+=.57,p)*a,p,cos(s-=t))-sin(s)*cross(a,p));
for(d=1.;d++<9.;a+=sin(a*d-t).yzx/d);
z+=d=length(sin(a-t)+.7)*length(p.xy-p.z)/4e1;}
o=tanh(o/2e4);
for(float i,z,d,s;i++<1e2;o+=vec4(z,4,1,1)/d)
{vec3 p=z*normalize(FC.rgb*2.-r.xyy),a;p.z+=9.;s=length(a=mix(dot(a+=.57,p)*a,p,cos(s-=t))-sin(s)*cross(a,p));
for(d=1.;d++<9.;a+=sin(a*d-t).yzx/d);
z+=d=length(sin(a-t)+.7)*length(p.xy-p.z)/4e1;}
o=tanh(o/2e4);
Reposted by Addy
Some mountains made with the new "stacking pyramids" noise algorithm. They look pretty good, though there are occasional very obvious directional artifacts.
#indiegames #indiedev #gamedev #screenshotsaturday
#indiegames #indiedev #gamedev #screenshotsaturday
September 6, 2025 at 3:49 PM
Some mountains made with the new "stacking pyramids" noise algorithm. They look pretty good, though there are occasional very obvious directional artifacts.
#indiegames #indiedev #gamedev #screenshotsaturday
#indiegames #indiedev #gamedev #screenshotsaturday
Reposted by Addy
Hi! I was laid off from Firaxis this morning. I wrote leaders and civs for Civilization VII (NDA for now) and Deadpool and Storm for Marvel's Midnight Suns. I also wrote the award-nominated Hindsight.
I'm available for full time, remote work starting ASAP. DMs are open:
emmkid.info
I'm available for full time, remote work starting ASAP. DMs are open:
emmkid.info
Portfolio
emmkid.info
September 4, 2025 at 3:17 PM
Hi! I was laid off from Firaxis this morning. I wrote leaders and civs for Civilization VII (NDA for now) and Deadpool and Storm for Marvel's Midnight Suns. I also wrote the award-nominated Hindsight.
I'm available for full time, remote work starting ASAP. DMs are open:
emmkid.info
I'm available for full time, remote work starting ASAP. DMs are open:
emmkid.info