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Gabriel Dechichi

@gdechichi • 13,622 subscribers

Engine programmer. Prev Head of Engineering at Proxima and Senior Engineer at @Unity. Built @playsuckup ($1M+), now building a next generation 3D engine in C

Shorts

just finished my animation system in C and turns out it's ~14 times faster than Unity's animation system. I didn't optimize any of this btw, probably could be much faster still 🧵

just finished my animation system in C and turns out it's ~14 times faster than Unity's animation system. I didn't optimize any of this btw, probably could be much faster still 🧵

9,576,798 次观看

that's how fast this can be in C btw this is *still* slow because you would not run layout on 5k elements anyway, you would virtualize, but the point of the benchmark is to check the layout algorithm scalability computers are fast.

that's how fast this can be in C btw this is still slow because you would not run layout on 5k elements anyway, you would virtualize, but the point of the benchmark is to check the layout algorithm scalability computers are fast.

190,902 次观看

last night I wrote a C tokenizer and parser to handle code generation for my game engine. when this is done I'll be able to generate type safe serializers, runtime reflection, and honestly anything else I can imagine. 100x more powerful than C++ templates.

last night I wrote a C tokenizer and parser to handle code generation for my game engine. when this is done I'll be able to generate type safe serializers, runtime reflection, and honestly anything else I can imagine. 100x more powerful than C++ templates.

397,450 次观看

a lot of people didn’t seem to believe that my C engine is 14x faster than Unity on the web. so I made the demo available online, link in the 🧵 the Unity project is on github, I’m still on the fence whether I’ll post the C code or not, maybe under CC non-commercial?

a lot of people didn’t seem to believe that my C engine is 14x faster than Unity on the web. so I made the demo available online, link in the 🧵 the Unity project is on github, I’m still on the fence whether I’ll post the C code or not, maybe under CC non-commercial?

471,354 次观看

btw, Unity also takes waaaaay longer to load. 12 seconds vs instant. that's from localhost, no downloads involved.

btw, Unity also takes waaaaay longer to load. 12 seconds vs instant. that's from localhost, no downloads involved.

75,406 次观看

everyone is vibe coding games with AI and Three.js. that inspired me to *raw code* a game with C and no libraries. 💪 plan is to set up a proper PBR rendering pipeline today, and then will start prototyping some gameplay. this is going to be fun 😁

everyone is vibe coding games with AI and Three.js. that inspired me to raw code a game with C and no libraries. 💪 plan is to set up a proper PBR rendering pipeline today, and then will start prototyping some gameplay. this is going to be fun 😁

22,797 次观看

you guys asked me to compare my C animation system with Godot Engine next, so here goes: doing about 3x better than Unity here, and about 4x slower than the C engine. that's more in line with a reasonable performance hit for a generic engine, more details below 🧵

you guys asked me to compare my C animation system with Godot Engine next, so here goes: doing about 3x better than Unity here, and about 4x slower than the C engine. that's more in line with a reasonable performance hit for a generic engine, more details below 🧵

14,774 次观看

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often times folks ask me what happens when you mismanage memory in C well, this happens

often times folks ask me what happens when you mismanage memory in C well, this happens

Gabriel Dechichi

7,223,932 次观看 • 5 个月前

just finished my ECS system in C and it turns out it's ~17x faster than Unity DOTS on the web that's 100k boids at ~90 FPS instead of 17 FPS sharing the code and link for this demo soon, details below 🧵

just finished my ECS system in C and it turns out it's ~17x faster than Unity DOTS on the web that's 100k boids at ~90 FPS instead of 17 FPS sharing the code and link for this demo soon, details below 🧵

Gabriel Dechichi

6,115,899 次观看 • 5 个月前

I've been working on getting my C multicore-runtime to run on the web. it's still early, but this is a fully multi-threaded renderer + physics running on WebGPU and WASM. 100k cubes, 60 FPS I'll be benchmarking it against Unity ECS soon

I've been working on getting my C multicore-runtime to run on the web. it's still early, but this is a fully multi-threaded renderer + physics running on WebGPU and WASM. 100k cubes, 60 FPS I'll be benchmarking it against Unity ECS soon

Gabriel Dechichi

2,444,467 次观看 • 5 个月前

for years I've self-selected out of writing game engines from scratch because everyone says "it's too hard". but is it? This is my progress after 2 weekends of work. I use AI to explain me to topics I don't know, and then verify with online articles or youtube videos. 🧵

for years I've self-selected out of writing game engines from scratch because everyone says "it's too hard". but is it? This is my progress after 2 weekends of work. I use AI to explain me to topics I don't know, and then verify with online articles or youtube videos. 🧵

Gabriel Dechichi

2,663,564 次观看 • 1 年前

just wrapped up the PBR path tracer for my engine, and looks like it's about 5x faster than Unreal Engine and 12x faster than Unity for the same scene. goal is to make this real time

just wrapped up the PBR path tracer for my engine, and looks like it's about 5x faster than Unreal Engine and 12x faster than Unity for the same scene. goal is to make this real time

Gabriel Dechichi

79,016 次观看 • 3 个月前

some progress on SSGI > GBuffer pass with normals and albedo > mipmaps for depth and irradiance (so we can lod sample farther pixels) > horizon based AO and GI (6 rays per pixel, 12 steps) next step is fixing the temporal and spatial noise

some progress on SSGI > GBuffer pass with normals and albedo > mipmaps for depth and irradiance (so we can lod sample farther pixels) > horizon based AO and GI (6 rays per pixel, 12 steps) next step is fixing the temporal and spatial noise

Gabriel Dechichi

42,795 次观看 • 4 个月前

prototyping an open ocean level what you guys think?

prototyping an open ocean level what you guys think?

Gabriel Dechichi

26,418 次观看 • 1 年前

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