SimonDev
@simondev.bsky.social
Pinned
I built this little tool to optimize and re-export GLTF/GLB assets to GPU-compressed KTX2. It runs entirely client-side/in-browser.
You can fiddle with the parameters, compare the before/after, and export to GLB.
Try it here: gltf-optimizer.simondev.io
#threejs #gamedev
You can fiddle with the parameters, compare the before/after, and export to GLB.
Try it here: gltf-optimizer.simondev.io
#threejs #gamedev
Black Friday Sale!
50% off all courses for the next few days.
No code needed, discount auto-applies!
More topics coming in the new year. Tell me what you want to see next.
simondev.io
#threejs
50% off all courses for the next few days.
No code needed, discount auto-applies!
More topics coming in the new year. Tell me what you want to see next.
simondev.io
#threejs
November 27, 2025 at 9:01 PM
Black Friday Sale!
50% off all courses for the next few days.
No code needed, discount auto-applies!
More topics coming in the new year. Tell me what you want to see next.
simondev.io
#threejs
50% off all courses for the next few days.
No code needed, discount auto-applies!
More topics coming in the new year. Tell me what you want to see next.
simondev.io
#threejs
Blender Scripting section is live! 3 hours of new content for the gamedev course.
Build custom plugins, exporters, and automate things like lightmap baking.
Preview: simondev.io/lessons/game...
Over 65 hours of course content is now live!
#threejs
Build custom plugins, exporters, and automate things like lightmap baking.
Preview: simondev.io/lessons/game...
Over 65 hours of course content is now live!
#threejs
November 26, 2025 at 3:07 PM
Blender Scripting section is live! 3 hours of new content for the gamedev course.
Build custom plugins, exporters, and automate things like lightmap baking.
Preview: simondev.io/lessons/game...
Over 65 hours of course content is now live!
#threejs
Build custom plugins, exporters, and automate things like lightmap baking.
Preview: simondev.io/lessons/game...
Over 65 hours of course content is now live!
#threejs
Reposted by SimonDev
My new book launches today!
November 25, 2025 at 12:32 PM
My new book launches today!
I built this little tool to optimize and re-export GLTF/GLB assets to GPU-compressed KTX2. It runs entirely client-side/in-browser.
You can fiddle with the parameters, compare the before/after, and export to GLB.
Try it here: gltf-optimizer.simondev.io
#threejs #gamedev
You can fiddle with the parameters, compare the before/after, and export to GLB.
Try it here: gltf-optimizer.simondev.io
#threejs #gamedev
November 25, 2025 at 1:55 PM
I built this little tool to optimize and re-export GLTF/GLB assets to GPU-compressed KTX2. It runs entirely client-side/in-browser.
You can fiddle with the parameters, compare the before/after, and export to GLB.
Try it here: gltf-optimizer.simondev.io
#threejs #gamedev
You can fiddle with the parameters, compare the before/after, and export to GLB.
Try it here: gltf-optimizer.simondev.io
#threejs #gamedev
Dusted off my octahedral imposter demo for someone. Sprinkled in various trees from @quaternius.bsky.social
Should make them react to lighting properly and all that.
Reference: shaderbits.com/blog/octahed...
#threejs
Should make them react to lighting properly and all that.
Reference: shaderbits.com/blog/octahed...
#threejs
November 13, 2025 at 8:57 PM
Dusted off my octahedral imposter demo for someone. Sprinkled in various trees from @quaternius.bsky.social
Should make them react to lighting properly and all that.
Reference: shaderbits.com/blog/octahed...
#threejs
Should make them react to lighting properly and all that.
Reference: shaderbits.com/blog/octahed...
#threejs
I’ve opened up many of the TSL exercises to everyone!
If you wanna try out some WebGPU shaders and fiddle with them, all in the browser.
Try an exercise and see if you can match the output.
Link: simondev.io/lessons/shad...
#threejs #webgpu
If you wanna try out some WebGPU shaders and fiddle with them, all in the browser.
Try an exercise and see if you can match the output.
Link: simondev.io/lessons/shad...
#threejs #webgpu
November 11, 2025 at 10:58 PM
I’ve opened up many of the TSL exercises to everyone!
If you wanna try out some WebGPU shaders and fiddle with them, all in the browser.
Try an exercise and see if you can match the output.
Link: simondev.io/lessons/shad...
#threejs #webgpu
If you wanna try out some WebGPU shaders and fiddle with them, all in the browser.
Try an exercise and see if you can match the output.
Link: simondev.io/lessons/shad...
#threejs #webgpu
Reposted by SimonDev
Almost done updating my Graveyard Kit, I've remade every single 3D model in this #gameassets pack. It'll release (probably!) near the end of the week, free for everyone and can be used for any purpose.
Thank you for all your support all these years! ✨
Thank you for all your support all these years! ✨
October 14, 2025 at 2:34 PM
Almost done updating my Graveyard Kit, I've remade every single 3D model in this #gameassets pack. It'll release (probably!) near the end of the week, free for everyone and can be used for any purpose.
Thank you for all your support all these years! ✨
Thank you for all your support all these years! ✨
Reposted by SimonDev
AI Slop Is Killing Our Channel
YouTube video by Kurzgesagt – In a Nutshell
www.youtube.com
October 9, 2025 at 5:03 AM
🔔 Site update: new SimonDev site is super functional and getting better.
Latest addition: integrated shader homework - edit GLSL in-browser and match target output. It’s a polished evolution of my 2023 GLSL site.
Reminder, teachable students can access same content (and more)
Link below 👇
Latest addition: integrated shader homework - edit GLSL in-browser and match target output. It’s a polished evolution of my 2023 GLSL site.
Reminder, teachable students can access same content (and more)
Link below 👇
October 6, 2025 at 1:28 PM
🔔 Site update: new SimonDev site is super functional and getting better.
Latest addition: integrated shader homework - edit GLSL in-browser and match target output. It’s a polished evolution of my 2023 GLSL site.
Reminder, teachable students can access same content (and more)
Link below 👇
Latest addition: integrated shader homework - edit GLSL in-browser and match target output. It’s a polished evolution of my 2023 GLSL site.
Reminder, teachable students can access same content (and more)
Link below 👇
Reposted by SimonDev
Recreated my game jam entry in C using @flohofwoe.bsky.social's awesome Sokol graphics library. It was a great learning experience! Implemented camera movement and various tweaks using imgui. Lighting based on @simondev.bsky.social's GLSL course.
Link: github.com/yhutter/soko...
#c #sokol #gamedev
Link: github.com/yhutter/soko...
#c #sokol #gamedev
August 23, 2025 at 4:40 PM
Recreated my game jam entry in C using @flohofwoe.bsky.social's awesome Sokol graphics library. It was a great learning experience! Implemented camera movement and various tweaks using imgui. Lighting based on @simondev.bsky.social's GLSL course.
Link: github.com/yhutter/soko...
#c #sokol #gamedev
Link: github.com/yhutter/soko...
#c #sokol #gamedev
Reposted by SimonDev
"Phosphor"
for(float i,z,d;i++<8e1;o+=(cos(d/.1+vec4(0,2,4,0))+1.)/d*z){vec3 p=z*normalize(FC.rgb*2.-r.xyy),a=normalize(cos(vec3(4,2,0)+t-d*8.));p.z+=5.,a=a*dot(a,p)-cross(a,p);for(d=1.;d++<9.;)a+=sin(a*d+t).yzx/d;z+=d=.05*abs(length(p)-3.)+.04*abs(a.y);}o=tanh(o/1e4);
for(float i,z,d;i++<8e1;o+=(cos(d/.1+vec4(0,2,4,0))+1.)/d*z){vec3 p=z*normalize(FC.rgb*2.-r.xyy),a=normalize(cos(vec3(4,2,0)+t-d*8.));p.z+=5.,a=a*dot(a,p)-cross(a,p);for(d=1.;d++<9.;)a+=sin(a*d+t).yzx/d;z+=d=.05*abs(length(p)-3.)+.04*abs(a.y);}o=tanh(o/1e4);
July 2, 2025 at 4:33 PM
"Phosphor"
for(float i,z,d;i++<8e1;o+=(cos(d/.1+vec4(0,2,4,0))+1.)/d*z){vec3 p=z*normalize(FC.rgb*2.-r.xyy),a=normalize(cos(vec3(4,2,0)+t-d*8.));p.z+=5.,a=a*dot(a,p)-cross(a,p);for(d=1.;d++<9.;)a+=sin(a*d+t).yzx/d;z+=d=.05*abs(length(p)-3.)+.04*abs(a.y);}o=tanh(o/1e4);
for(float i,z,d;i++<8e1;o+=(cos(d/.1+vec4(0,2,4,0))+1.)/d*z){vec3 p=z*normalize(FC.rgb*2.-r.xyy),a=normalize(cos(vec3(4,2,0)+t-d*8.));p.z+=5.,a=a*dot(a,p)-cross(a,p);for(d=1.;d++<9.;)a+=sin(a*d+t).yzx/d;z+=d=.05*abs(length(p)-3.)+.04*abs(a.y);}o=tanh(o/1e4);
June 18, 2025 at 5:58 PM
A little followup to the last section: If you understand heuristics and admissibility, you can tweak A* to run much faster! If you're willing to sacrifice perfection, faster still.
Learn about it in my latest section on graph traversal.
simondev.io
Learn about it in my latest section on graph traversal.
simondev.io
June 11, 2025 at 4:16 PM
A little followup to the last section: If you understand heuristics and admissibility, you can tweak A* to run much faster! If you're willing to sacrifice perfection, faster still.
Learn about it in my latest section on graph traversal.
simondev.io
Learn about it in my latest section on graph traversal.
simondev.io
Reposted by SimonDev
"String Theory"
for(float i,z=fract(dot(FC,sin(FC))),d;i++<1e2;){vec3 p=z*normalize(FC.rgb*2.-r.xyy);p.z+=9.;for(d=.7;d<4.;d/=.9)p+=cos(p.yzx*d-t/vec3(2,1,5))/d;z+=d=.002+abs(p.z)/2e1;o+=(sin(z+4.*p.z+vec4(0,1,5,0))+1.2)/d;}o=tanh(o/1e4);
for(float i,z=fract(dot(FC,sin(FC))),d;i++<1e2;){vec3 p=z*normalize(FC.rgb*2.-r.xyy);p.z+=9.;for(d=.7;d<4.;d/=.9)p+=cos(p.yzx*d-t/vec3(2,1,5))/d;z+=d=.002+abs(p.z)/2e1;o+=(sin(z+4.*p.z+vec4(0,1,5,0))+1.2)/d;}o=tanh(o/1e4);
June 11, 2025 at 3:44 PM
"String Theory"
for(float i,z=fract(dot(FC,sin(FC))),d;i++<1e2;){vec3 p=z*normalize(FC.rgb*2.-r.xyy);p.z+=9.;for(d=.7;d<4.;d/=.9)p+=cos(p.yzx*d-t/vec3(2,1,5))/d;z+=d=.002+abs(p.z)/2e1;o+=(sin(z+4.*p.z+vec4(0,1,5,0))+1.2)/d;}o=tanh(o/1e4);
for(float i,z=fract(dot(FC,sin(FC))),d;i++<1e2;){vec3 p=z*normalize(FC.rgb*2.-r.xyy);p.z+=9.;for(d=.7;d<4.;d/=.9)p+=cos(p.yzx*d-t/vec3(2,1,5))/d;z+=d=.002+abs(p.z)/2e1;o+=(sin(z+4.*p.z+vec4(0,1,5,0))+1.2)/d;}o=tanh(o/1e4);
This looks seriously awesome
I made this planet shader after completing @simondev.bsky.social's shader course, and now he has a new bundle including more advanced techniques and maths ? Let's do this ! 🚀
Give me just 10 years to complete all the courses I bought, and I should come up with interesting stuff...
Give me just 10 years to complete all the courses I bought, and I should come up with interesting stuff...
June 11, 2025 at 4:14 PM
This looks seriously awesome
Just added the next part of the graphs and data structures section, covering traversal and pathfinding!
Combined they're about 2.5 hours of new content, live now!
simondev.io
#threejs #gamedevelopment
Combined they're about 2.5 hours of new content, live now!
simondev.io
#threejs #gamedevelopment
June 6, 2025 at 4:37 PM
Just added the next part of the graphs and data structures section, covering traversal and pathfinding!
Combined they're about 2.5 hours of new content, live now!
simondev.io
#threejs #gamedevelopment
Combined they're about 2.5 hours of new content, live now!
simondev.io
#threejs #gamedevelopment
Just added a new hour long section to the course: Graphs and Data Structures
This is just the intro, planning on expanding it soon. It's already live in the course, if you grabbed the early access!
simondev.io
This is just the intro, planning on expanding it soon. It's already live in the course, if you grabbed the early access!
simondev.io
SimonDev.io
Learn from an industry veteran. From fundamentals to advanced techniques, build projects that perform, scale, and stand out.
simondev.io
May 30, 2025 at 2:06 PM
Just added a new hour long section to the course: Graphs and Data Structures
This is just the intro, planning on expanding it soon. It's already live in the course, if you grabbed the early access!
simondev.io
This is just the intro, planning on expanding it soon. It's already live in the course, if you grabbed the early access!
simondev.io
Fiddling around with octahedral imposters. The tree is actually just a sprite (intentionally low res).
Shader is doing all the work, and blending between frames. First pass, probably not super robust.
#threejs
Shader is doing all the work, and blending between frames. First pass, probably not super robust.
#threejs
May 22, 2025 at 8:05 PM
Fiddling around with octahedral imposters. The tree is actually just a sprite (intentionally low res).
Shader is doing all the work, and blending between frames. First pass, probably not super robust.
#threejs
Shader is doing all the work, and blending between frames. First pass, probably not super robust.
#threejs
Reposted by SimonDev
NEW Mini: Design Choices
The guidelines I use to visually improve my shader art
mini.gmshaders.com/p/design-cho...
The guidelines I use to visually improve my shader art
mini.gmshaders.com/p/design-cho...
May 19, 2025 at 9:32 PM
NEW Mini: Design Choices
The guidelines I use to visually improve my shader art
mini.gmshaders.com/p/design-cho...
The guidelines I use to visually improve my shader art
mini.gmshaders.com/p/design-cho...
🧵 TSL is looking pretty awesome, but I got you covered until then.
I just hit publish on ~2 hours of new content to the course, covering how to dig into Three.js's internals, and we cap the project off with some terrain with erosion and scattering tricks.
Live in the course, so check it out!
I just hit publish on ~2 hours of new content to the course, covering how to dig into Three.js's internals, and we cap the project off with some terrain with erosion and scattering tricks.
Live in the course, so check it out!
May 14, 2025 at 8:27 PM
🧵 TSL is looking pretty awesome, but I got you covered until then.
I just hit publish on ~2 hours of new content to the course, covering how to dig into Three.js's internals, and we cap the project off with some terrain with erosion and scattering tricks.
Live in the course, so check it out!
I just hit publish on ~2 hours of new content to the course, covering how to dig into Three.js's internals, and we cap the project off with some terrain with erosion and scattering tricks.
Live in the course, so check it out!
Reposted by SimonDev
I implemented Homeworld 2 style sky meshes using baked vertex colors in @threejs.org. Reduces VRAM usage from 200mb (2k x 4k UASTC GPU compressed) to a lowly 4mb! For reference, iOS Safari used to crash web pages at 256mb, so this a big win :)
#threejs #gamedev #IndieGameDev
#threejs #gamedev #IndieGameDev
April 30, 2025 at 3:04 PM
I implemented Homeworld 2 style sky meshes using baked vertex colors in @threejs.org. Reduces VRAM usage from 200mb (2k x 4k UASTC GPU compressed) to a lowly 4mb! For reference, iOS Safari used to crash web pages at 256mb, so this a big win :)
#threejs #gamedev #IndieGameDev
#threejs #gamedev #IndieGameDev
💡 Automate all the things! Automate your build pipeline, from mass exporting .blend files to rendering lightmaps. All of this can be done programmatically with Blender’s scripting interface.
🔔 Want to be notified? Sign up here 👉
simondev.teachable.com/p/games-thre...
🔔 Want to be notified? Sign up here 👉
simondev.teachable.com/p/games-thre...
April 30, 2025 at 7:21 PM
💡 Automate all the things! Automate your build pipeline, from mass exporting .blend files to rendering lightmaps. All of this can be done programmatically with Blender’s scripting interface.
🔔 Want to be notified? Sign up here 👉
simondev.teachable.com/p/games-thre...
🔔 Want to be notified? Sign up here 👉
simondev.teachable.com/p/games-thre...