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Sebastian Aaltonen

@SebAaltonen • 58,647 subscribers

30 years of 3d rendering experience. Former principal engineer at Unity, Ubisoft and HypeHype.

Shorts

First test of the new black hole device... Jussi Kemppainen | Drivers of the Apocalypse asked yesterday why I am not filling the SDF explosion holes with particles. If it's worth doing, then it's worth overdoing :D

First test of the new black hole device... Jussi Kemppainen | Drivers of the Apocalypse asked yesterday why I am not filling the SDF explosion holes with particles. If it's worth doing, then it's worth overdoing :D

56,919 Aufrufe

I am impressed about our new WebGPU WASM page load time. Whole engine loads in just a few hundreds of milliseconds. And games load pretty much instantly too.

I am impressed about our new WebGPU WASM page load time. Whole engine loads in just a few hundreds of milliseconds. And games load pretty much instantly too.

497,785 Aufrufe

Petafab 3x faster level generation/loading. 0.17 seconds. In Trials Evolution (Xbox 360) we measured that 0.3 seconds was the limit. If level quick restart took longer than that, you started to get annoyed.

Petafab 3x faster level generation/loading. 0.17 seconds. In Trials Evolution (Xbox 360) we measured that 0.3 seconds was the limit. If level quick restart took longer than that, you started to get annoyed.

21,115 Aufrufe

New GPU particle system -> MORE particles! Particles sample the SDF and bounce from walls/floors.

New GPU particle system -> MORE particles! Particles sample the SDF and bounce from walls/floors.

12,017 Aufrufe

Petafab: Level 3 boss laser cutter. Slices the whole map. Has classic arcade-style slow homing missiles too.

Petafab: Level 3 boss laser cutter. Slices the whole map. Has classic arcade-style slow homing missiles too.

11,083 Aufrufe

Videos

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Ported Claybook's fluid solver to Petafab. Looks awesome :) 24K particles test: Simulation: 0.13ms Surface generation: 0.05ms Drawing: 0.3ms YouTube link:

Ported Claybook's fluid solver to Petafab. Looks awesome :) 24K particles test: Simulation: 0.13ms Surface generation: 0.05ms Drawing: 0.3ms YouTube link:

Sebastian Aaltonen

38,989 Aufrufe • vor 2 Tagen

Internal test game created by a single (senior) developer in 5 days using our new tools and engine. Uses WASM mini-engine (ECS, rendering, animations and physics). 100% AI generated assets using our new asset pipeline. Custom character controller. Slop or not?

Internal test game created by a single (senior) developer in 5 days using our new tools and engine. Uses WASM mini-engine (ECS, rendering, animations and physics). 100% AI generated assets using our new asset pipeline. Custom character controller. Slop or not?

Sebastian Aaltonen

1,196,702 Aufrufe • vor 4 Monaten

Did a quick prototype in 3 days. Starting to feel fun. Should I continue with this direction or do something else? Visuals of course would be MUCH better in the final game. This has quickly done AI proto assets.

Did a quick prototype in 3 days. Starting to feel fun. Should I continue with this direction or do something else? Visuals of course would be MUCH better in the final game. This has quickly done AI proto assets.

Sebastian Aaltonen

112,207 Aufrufe • vor 2 Monaten

PETAFAB: With Claybook tech (runs at 1000 fps 1080p or 480 fps at 4K) and improved shadows + improved bloom. Gameplay has also improved. There's new gadgets and new ultimate attacks. L.U.R.E and air strike shown in this video.

PETAFAB: With Claybook tech (runs at 1000 fps 1080p or 480 fps at 4K) and improved shadows + improved bloom. Gameplay has also improved. There's new gadgets and new ultimate attacks. L.U.R.E and air strike shown in this video.

Sebastian Aaltonen

62,562 Aufrufe • vor 1 Monat

2nd day final video: Now you have limited ammo. 5 rockets. So much scarier. If rockets run out, you run 50% faster. Parkour away, or use the last rocket to jump to high ground. But enemies will pile up and get you. Rocket pickups drops from the sky, forcing you to move.

2nd day final video: Now you have limited ammo. 5 rockets. So much scarier. If rockets run out, you run 50% faster. Parkour away, or use the last rocket to jump to high ground. But enemies will pile up and get you. Rocket pickups drops from the sky, forcing you to move.

Sebastian Aaltonen

92,271 Aufrufe • vor 2 Monaten

Steam Deck works! Maintains 90Hz native res very well. Two small dips to ~70Hz. Must be SDF body stamping. Will be locked 90Hz soon. Had to set following launch option: RADV_EXPERIMENTAL=heap Hopefully OS with official support for descriptor heap lands before the game ships.

Steam Deck works! Maintains 90Hz native res very well. Two small dips to ~70Hz. Must be SDF body stamping. Will be locked 90Hz soon. Had to set following launch option: RADV_EXPERIMENTAL=heap Hopefully OS with official support for descriptor heap lands before the game ships.

Sebastian Aaltonen

23,188 Aufrufe • vor 16 Tagen

It takes 2:25 to walk across the 8192x8192 2km^2 terrain in my WebGPU prototype. The world is way too big for 10,000 players. Nobody will see each other. Unless we have vehicles of course. I would love to have random dune buggies and ATVs around the map for players to grab :)

It takes 2:25 to walk across the 8192x8192 2km^2 terrain in my WebGPU prototype. The world is way too big for 10,000 players. Nobody will see each other. Unless we have vehicles of course. I would love to have random dune buggies and ATVs around the map for players to grab :)

Sebastian Aaltonen

266,728 Aufrufe • vor 11 Monaten

I really hated the level selector with GenAI images. So I did what every tech person would do. I render actual 3d levels with cinematic camera reels in the level selector. My level loading/generation is still in main thread and takes a whopping 0.5 seconds. Need to optimize.

I really hated the level selector with GenAI images. So I did what every tech person would do. I render actual 3d levels with cinematic camera reels in the level selector. My level loading/generation is still in main thread and takes a whopping 0.5 seconds. Need to optimize.

Sebastian Aaltonen

28,331 Aufrufe • vor 1 Monat

SDF destruction game prototype day 1 results...

SDF destruction game prototype day 1 results...

Sebastian Aaltonen

53,781 Aufrufe • vor 2 Monaten

Menu flow. Instant loading. 0.2s fades don't block, UI is fully functional while fading in. Level generation (1GB SDF) takes 0.7s. AVX2 vectorized, but not yet multithreaded. Will be <0.2s in final version. Will mask it fully in the 0.2s menu fade-out. Placeholder 2€ AI art.

Menu flow. Instant loading. 0.2s fades don't block, UI is fully functional while fading in. Level generation (1GB SDF) takes 0.7s. AVX2 vectorized, but not yet multithreaded. Will be <0.2s in final version. Will mask it fully in the 0.2s menu fade-out. Placeholder 2€ AI art.

Sebastian Aaltonen

21,862 Aufrufe • vor 1 Monat

Does your physics engine handle a stack of 1000 enemies?

Does your physics engine handle a stack of 1000 enemies?

Sebastian Aaltonen

22,157 Aufrufe • vor 1 Monat

Project codename: I have been building this for 3 days now. It uses NoGraphicsAPI for rendering. Destructible SDF world. Similar tech as Claybook (2018). Still missing fluids, lava, etc. There's a final boss too...

Project codename: I have been building this for 3 days now. It uses NoGraphicsAPI for rendering. Destructible SDF world. Similar tech as Claybook (2018). Still missing fluids, lava, etc. There's a final boss too...

Sebastian Aaltonen

21,671 Aufrufe • vor 1 Monat

PetaFab: Parkour hero gameplay. Energy drink speed boost + double jump make him really agile. Finishing off with air strike ultimate.

PetaFab: Parkour hero gameplay. Energy drink speed boost + double jump make him really agile. Finishing off with air strike ultimate.

Sebastian Aaltonen

19,500 Aufrufe • vor 1 Monat

The AI-SLOP saga continues: Colleague was running agents again in background to build new features to his prototype game. Now you have weapons, damage, explosions and enemies. Ragdolls driven by our new animation system (WASM SIMD). Physics is Jolt (WASM SIMD). 100% AI content.

The AI-SLOP saga continues: Colleague was running agents again in background to build new features to his prototype game. Now you have weapons, damage, explosions and enemies. Ragdolls driven by our new animation system (WASM SIMD). Physics is Jolt (WASM SIMD). 100% AI content.

Sebastian Aaltonen

51,228 Aufrufe • vor 4 Monaten

New lighting tech in BAD Game (code name). 100% real time and runs at 240Hz 4K on my RTX 4090. 8x faster than my initial 16x SDF-ray per pixel proto. 1 ray per pixel and a new 6x6 bilateral filter (shared between SSAO and SDF rays). Starting to look pretty good :)

New lighting tech in BAD Game (code name). 100% real time and runs at 240Hz 4K on my RTX 4090. 8x faster than my initial 16x SDF-ray per pixel proto. 1 ray per pixel and a new 6x6 bilateral filter (shared between SSAO and SDF rays). Starting to look pretty good :)

Sebastian Aaltonen

18,762 Aufrufe • vor 1 Monat

First video of level 2: Imagine having a nice chat at SIGGRAPH and jetpack bots with rocket launchers crash in and blow up the lobby sofas. Finally the lighting tech starts to be good enough for this challenging level. The window grids are a PITA for cone tracing.

First video of level 2: Imagine having a nice chat at SIGGRAPH and jetpack bots with rocket launchers crash in and blow up the lobby sofas. Finally the lighting tech starts to be good enough for this challenging level. The window grids are a PITA for cone tracing.

Sebastian Aaltonen

13,734 Aufrufe • vor 1 Monat

I wrote a AI "text adventure game" (MUD) in the past two weeks. We had a "hackweek" for prototyping AI game play. Story is AI generated text. Text generator is fed the theme and previous rooms and rules for exit generation. It returns a JSON string of exits and their descriptions. Which the game then parses and sends to AI image generator and room graph system. There's also a AI written battle story generator, which gets your inventory as input. AI figures how to use your weapons and consumables. And returns JSON for managing inventory state (broken weapons, consumables, etc).

I wrote a AI "text adventure game" (MUD) in the past two weeks. We had a "hackweek" for prototyping AI game play. Story is AI generated text. Text generator is fed the theme and previous rooms and rules for exit generation. It returns a JSON string of exits and their descriptions. Which the game then parses and sends to AI image generator and room graph system. There's also a AI written battle story generator, which gets your inventory as input. AI figures how to use your weapons and consumables. And returns JSON for managing inventory state (broken weapons, consumables, etc).

Sebastian Aaltonen

72,419 Aufrufe • vor 9 Monaten

Day 2 morning: AI roasted me about creating just a tech demo. That triggered me deeply inside, so I added 1000 enemies to the map :)

Day 2 morning: AI roasted me about creating just a tech demo. That triggered me deeply inside, so I added 1000 enemies to the map :)

Sebastian Aaltonen

17,836 Aufrufe • vor 2 Monaten

My terrain proto looks so much better with actual 8192x8192 heightmap instead of the crappy gaussian noise. Implementing a lossless heightmap compressor now. The last one I wrote at Ubisoft has ~10x compression ratio. Of course I ended up writing a compressor as a side quest :)

My terrain proto looks so much better with actual 8192x8192 heightmap instead of the crappy gaussian noise. Implementing a lossless heightmap compressor now. The last one I wrote at Ubisoft has ~10x compression ratio. Of course I ended up writing a compressor as a side quest :)

Sebastian Aaltonen

60,301 Aufrufe • vor 11 Monaten

Going downhill in my WebGPU terrain proto. Imagine having a car... I would love to write another physics solver :)

Going downhill in my WebGPU terrain proto. Imagine having a car... I would love to write another physics solver :)

Sebastian Aaltonen

57,420 Aufrufe • vor 11 Monaten