iiinova — where your digital self keeps evolving

Florisium @florisium.bsky.social · 16/12/2025

Florisium is finally out! 🌸 Play free now on iOS. After many years in development, we’re excited to share this calm little escape with you. Hope you enjoy it - and thanks for sharing!

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Florisium @florisium.bsky.social · 29/10/2025

btw - check HDR version of these images on Threads - completely different atmosphere! www.threads.com/@florisium.g...

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Florisium @florisium.bsky.social · 29/10/2025

Sunlight meets color, and I’m hooked. Proof that subsurface scattering deserves more hype. #flowers #mobilegame #cozygame #flowerlovers #homeplant #sandbox #simulationgames #subsurfacescattering

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Florisium @florisium.bsky.social · 25/10/2025

Sometimes, the best things grow when you stop trying to control them. This tangled beast I grew up last week, thinkscreenshotsaturday is the best time to share it. #screenshotsaturday #flowers #mobilegame #cozygame #flowerlovers #homeplant #sandbox #simulationgames #bee #honeybee

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Florisium @florisium.bsky.social · 07/10/2025

I have forwards and mobile - not too many moves allowed 😅 So its a simple multiply-blending that runs after all geometry. For the lights, its a bit hackier - I don't have proper albedo at the pass, instead, I multiply with the back buffer and add the same value on top, very wrong but works for me 😜

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Florisium @florisium.bsky.social · 07/10/2025

There are, of course, plenty of limitations (obvious and not-so-obvious) - I’ll dive into those next time 😉 And finally, here are a few fresh in-game shots (and remember - the game is still about flowers! 🌸) (16/16)

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Florisium @florisium.bsky.social · 07/10/2025

Bonus point: the same approach also gives cheap multi-point (and areal) lights support - in forward rendering, on mobile! 🎉🎉🎉 (15/16)

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Florisium @florisium.bsky.social · 07/10/2025

Performance-wise, it’s similar to the previous method, but no texture fetches, all math is half-based, and only ~30–40 instructions per shape type. On an iPhone 15Pro, native res, it costs about 0.02–0.2ms, depending on scene complexity and density (all are combined to a single draw-call). (14/16)

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Florisium @florisium.bsky.social · 07/10/2025

Using this system, I built a small set (7 types) of analytical AO shapes that cover most in-game dynamic props. The result is much more detailed and believable than the old texture-based version. Left = old. Right = new. (13/16)

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Florisium @florisium.bsky.social · 07/10/2025

Side views of cylindrical shapes also needed separate math (and again, the right image shows the ray-traced reference). (12/16)

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Florisium @florisium.bsky.social · 07/10/2025

Rectangular shapes are trickier since they have hard edges. I ended up with a slightly different, yet still cheap, function that models the visibility per rectangle size - same logic as with cylinders. (11/16)

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Florisium @florisium.bsky.social · 07/10/2025

For a top-down projected cylinder, that relation is proportional to arctan(D/R), where R is the cylinder radius. This separation (vertical+horizontal) produces results that are visually close to ray-traced truth - see the right image (distances and heights are not correlated on the images): (10/16)

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Florisium @florisium.bsky.social · 07/10/2025

The vertical part comes from the formula I showed earlier - nice and straightforward. The horizontal part, though, depends on how visibility changes with the distance to the surface and the surface’s own size.

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Florisium @florisium.bsky.social · 07/10/2025

The 2D version is a good start - but it doesn’t capture the whole. We need one more dimension to handle, which makes things trickier. Ideally, this should be a hemispherical integral of point visibility. In practice, I simplified it by splitting it into vertical and horizontal 2D components. (9/16)

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Florisium @florisium.bsky.social · 07/10/2025

Luckily, this simplifies nicely since cos(arctan(x)) = x/sqrt(x²+1). That gives a lightweight, computation-friendly formula that still behaves like smooth, realistic occlusion. You can play with the simplified version here: www.desmos.com/calculator/j... (8/16)

desmos.com

occlusion-simplified

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Florisium @florisium.bsky.social · 07/10/2025

The core 2D case is actually simple: Imagine a flat occluder of width 2W(from -W to W) standing at height H. The occlusion function looks like: (cos(arctan((x - W)/H)) + cos(arctan((-x - W)/H))) / 2 + 1 In other words - the sum of light coming from the left and right gaps around the occluder. (7/16)

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Florisium @florisium.bsky.social · 07/10/2025

So I finally found the courage to revisit the technique. This time - no prebaked textures. Instead, I went analytical - doing the math to emulate occlusion shapes directly for some simple primitives (boxes, spheres, cylinders, cones, etc). (6/16)

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Florisium @florisium.bsky.social · 07/10/2025

Results were way better than no AO at all, and every earlier game shot you’ve seen used this method. But... it was never perfect. Fixed textures have obvious limits. (5/16)

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Florisium @florisium.bsky.social · 07/10/2025

For the first version of the system, I used static textures to approximate the occlusion shape of some typical primitives. Just 3 texture types - pulled on for every moving object in the game (could be more than 1 shape per object). It worked!

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Florisium @florisium.bsky.social · 07/10/2025

4. Apply some shadow (occlusion) pattern on the area and draw the resulting geometry. 5. And yeah - do the above for every occlusion-receiver pair 😅 (4/16)

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Florisium @florisium.bsky.social · 07/10/2025

The base idea is beautifully simple: 1. Define surfaces that receive occlusion. 2. Define objects that cast occlusion. 3. For each receiver–caster pair, compute the projected occlusion area that roughly estimates shadowing of the cast object.

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Florisium @florisium.bsky.social · 07/10/2025

So, I went back in time and revived a classic: blob shadows - the technique used in early 3D games that often mimicked ambient occlusion rather than true shadows. (3/16)

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Florisium @florisium.bsky.social · 07/10/2025

Since the game’s main platform is mobile, I needed a fast and robust AO solution for dynamic objects. Screen-space AO? Not great for mobile-too noisy, not tile-based GPU friendly, inconsistent across devices, and needs heavy filtering. Ray-traced AO? Same story-not (yet?) practical on mobile. (2/16)

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Florisium @florisium.bsky.social · 07/10/2025

A bit technical thread 🧵 I’ve been improving the in-game ambient occlusion system - and ended up with something I call: Blob-based Analytical Ambient Occlusion on Primitives Here’s what it does to the final image: (more examples later in the thread) (1/16)

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Florisium @florisium.bsky.social · 09/08/2025

In the dark, every flower finds its light. Music: Libeccio by Christo4us (all shots are captured using the in-game video recorder) #flowers #mobilegame #sandbox #cozygame #gamedev #plants #timelapse

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Florisium @florisium.bsky.social · 06/08/2025

Check out these awesome shots directly from the in-game photo mode! "Bloom under the Moon" #flowers #mobilegame #sandbox #cozygame #gamedev

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Florisium @florisium.bsky.social · 05/08/2025

Florisium is a peaceful mobile sandbox game where every flower is meticulously simulated, ensuring no two are ever the same #flowers #mobilegame #sandbox #cozygame #gamedev

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Florisium @florisium.bsky.social · 04/08/2025

ohhh, thank you 🤗🤗🤗 will bring some more soon!

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Florisium @florisium.bsky.social · 04/08/2025

Welcome to the world of Florisium - a place where every flower is one of a kind and grown just for you #flowers #mobilegame #cozygame #flowerlovers #homeplant #sandbox

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