Kacper Szwajka @SzwajkaKacper Twitter profile | Pikagi

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Kacper Szwajka

@SzwajkaKacper

3,076

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Following

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Unity Technical Artist / Solo Gamemaker. Working on Highland Keep

Wrocław, Polska

https://t.co/EBATaTnCfG

Joined February 2022

Don't wanna be here? Send us removal request.

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@SzwajkaKacper

Kacper Szwajka

3 months

🚀 Technical Artist Available! Hey everyone! I’m currently pausing my side project and looking for some short-term contracts My expertise includes: - Shaders & Rendering Magic - VFX & Procedural Content - Art Direction - 3D Modeling Your shares are appreciated! Thanks!🙏

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@SzwajkaKacper

Kacper Szwajka

3 months

The main reason why I use particles for wind instead of scrolling noise #unity3d

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@SzwajkaKacper

Kacper Szwajka

2 years

Goshhhh.... FINALLY !!! 3rd attempt to fluid simulations 🫠 Big thanks to @IRCSS for detailed explenation of GPU fluids simulation and @_kzr for clean and simple implementation ( Links in thread ) #madewithunity #gamedevelopment

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@SzwajkaKacper

Kacper Szwajka

7 months

Added support for splines :) #unity3d

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@SzwajkaKacper

Kacper Szwajka

2 months

Impostors workflow #madewithunity

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@SzwajkaKacper

Kacper Szwajka

7 months

Been working more on 'GPU Run-time Procedural Placement' – with some tweaks in lighting and new tree models. Keen to hear your thoughts on how to enhance this further! #unity3d

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@SzwajkaKacper

Kacper Szwajka

27 days

Custom Grass Renderer Recently, I had a chance to create a custom grass renderer for @dinolordsgame Here`s how it works #indiegames #strategygame

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@SzwajkaKacper

Kacper Szwajka

3 months

Fixed the motion vectors, so no more TAA smearing! 😊 Big thanks for all the comments and shares on the last posts—it’s super motivating! #unity3d

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@SzwajkaKacper

Kacper Szwajka

7 months

Wrestling with wind physics 🙃 Branches are doing their own funky dance - pretty sure I overdid the complexity. But it's shaping up... sort of. In the meantime also added ambient fog particles. #madewithunity

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@SzwajkaKacper

Kacper Szwajka

7 months

Finally, managed to make it work ... Example of custom force injectors. Currently, the whole system takes around ~0.26 ms. It's not bad, but I think this might be easily improved to some ~0.1 ms( Tested on GeForce 2080) #unity3d #madewithunity

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@SzwajkaKacper

Kacper Szwajka

7 months

"Efficient GPU Rendering for Dynamic Instances " Uploaded the second part about rendering all this vegetation. If you've ever wondered how to get those dynamic instances running smoothly without frying your GPU, you should check it: #madewithunity

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@SzwajkaKacper

Kacper Szwajka

7 months

"GPU Run-time Procedural Placement " Have to say that I`m quite surprised by last response. Thanks for all shares <3. Here`s a version where was testing wetlands ecotypes #unity3d #gamedev

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@SzwajkaKacper

Kacper Szwajka

7 months

Reworked Wind system (Thread) #madewithunity

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@SzwajkaKacper

Kacper Szwajka

6 months

One more example showing the workflow with projected meshes height. Now need proper rock models cause these are just pebbles scaled 1000x times #unity3d

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@SzwajkaKacper

Kacper Szwajka

7 months

" GPU Run-time Procedural Placement " making of is available. Tried to include the main 'idea' and the process behind it. You can read it here: I'd love to hear any feedback or suggestions you might have! #gamedev #madewithunity

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@SzwajkaKacper

Kacper Szwajka

4 months

Taking a break from the VirtualTexture headache, implemented nature's collision logic #unity3d

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@SzwajkaKacper

Kacper Szwajka

2 years

Frustum Culling, Stream compaction, GPU sorting ... my brain will not dispatch for a while 😶‍🌫️ Last week I were struggling a lot with understanding exactly how to implement all this fancy stuff ( more in Thread ) #madewithunity #gamedev

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@SzwajkaKacper

Kacper Szwajka

6 months

Implemented feature for projecting meshes on terrain ( These white blobs are supposed to be rock formations etc.). Also, Terrain blend per object is added :) #madewithunity #gamedev

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@SzwajkaKacper

Kacper Szwajka

7 months

Inspired by the work of @GhislainGir decided to give a try his method. Created custom particle system and rendered these into flat 2d textures. This gives quite natural natural-looking velocity map + it's simpler to think of the particles as wind waves

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@SzwajkaKacper

Kacper Szwajka

6 months

🛠️ Excited to unveil behind-the-scenes VFX from "The Inquisitor"! From initial stages to final cuts, dive into our journey. Note: Captured mid-production, final visuals may vary. #GameDev #VFX #TheInquisitor

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@SzwajkaKacper

Kacper Szwajka

4 months

Tried to move to DX12 to improve sorting but its still quite unstable in Unity + it would require tons of adjustments. However... Thanks to @aras_p help I managed to improve DX11 version with "IslandGPUSort" ( adapted from Unity HDRP/SRP GPUSort code ) and its almost 2x faster

@SzwajkaKacper

Kacper Szwajka

7 months

"Efficient GPU Rendering for Dynamic Instances " Uploaded the second part about rendering all this vegetation. If you've ever wondered how to get those dynamic instances running smoothly without frying your GPU, you should check it: #madewithunity

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@SzwajkaKacper

Kacper Szwajka

3 months

Added few hacks to improve lighting #madewithunity #3d

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@SzwajkaKacper

Kacper Szwajka

4 months

Here's a sneak peek at squad mechanics: Right now, each squad uses a default line formation. I'm thinking about introducing unique formation styles for each team in the future. You might even get to customize your own team's formations etc. #unity3d

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@SzwajkaKacper

Kacper Szwajka

4 months

Testing some first "squads" logic #madewithunity

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@SzwajkaKacper

Kacper Szwajka

4 months

Custom animation event system to perfectly trigger hitting period or sword trials. Maybe not perfect in terms of garbage memory but working on that ... #unity3d

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@SzwajkaKacper

Kacper Szwajka

4 months

Also replace unity animation rigging package with `final IK` and added ik for feets , heads etc. Maybe its a bit less performant but I spent way too much time repairing various buggies from the built-in IK #madewithunity

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@SzwajkaKacper

Kacper Szwajka

1 year

Infinite Terrain Shadows without ShadowMaps. A bit hacky to inject in HDRP but algorithm itself is extremely simple. Currently working well with just 4 samples. #madewithunity #gamedevelopment

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@SzwajkaKacper

Kacper Szwajka

7 months

🦉 🌲 #madewithunity

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@SzwajkaKacper

Kacper Szwajka

2 years

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Gentle Introduction to Realtime Fluid Simulation for Programmers and Technical Artists

A simple intuitive breakdown of fluid simulation for programmers and technical artists. Instead of complicated mathematical expressions, I…

shahriyarshahrabi.medium.com

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@SzwajkaKacper

Kacper Szwajka

2 years

Added Global Color Map Support 🏔️ #gamedev #unity3d

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@SzwajkaKacper

Kacper Szwajka

2 years

Was implementing GPU instancing for grass rendering on my own, but adding LODs, frustum culling, and occlusion culling were very time-consuming. So, I decided to use the GpuInstancer package. Surprisingly it works well even in the editor #madewithunity #gamedevelopment

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@SzwajkaKacper

Kacper Szwajka

2 years

Testing new VFX Volumetric Fog Output. Seems to have many limitations, but have to say that first results are quite impressive #unity3d

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@SzwajkaKacper

Kacper Szwajka

4 months

Made proper textures debug mode #unity3d

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@SzwajkaKacper

Kacper Szwajka

2 years

Things getting serious ... Helicopter is done 🚁 Implemented outward forces to wind simulation. I'm still amazed about the amount of reaction to the last post 😊 #gamedevelopment #madewithunity

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@SzwajkaKacper

Kacper Szwajka

6 months

One more HDA Tool for "Inquisitor" project 🌿 #madewithunity #Houdini

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@SzwajkaKacper

Kacper Szwajka

27 days

@dinolordsgame Collision system is based on top view depth map which render only around camera point of interest. ( There is only one type of collision mesh to draw to utilize indirect rendering )

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@SzwajkaKacper

Kacper Szwajka

8 months

4x4 km Terrain Custom Renderer. Created based on GPU QuadTree implementation #GameDev #Unity3D

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@SzwajkaKacper

Kacper Szwajka

6 months

Another example from "The Inquisitor" project: Procedural Root Tool #unity3d #Houdini

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@SzwajkaKacper

Kacper Szwajka

2 years

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GitHub - keijiro/StableFluids: A straightforward GPU implementation of Jos Stam's "Stable Fluids"...

A straightforward GPU implementation of Jos Stam's "Stable Fluids" on Unity. - keijiro/StableFluids

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@SzwajkaKacper

Kacper Szwajka

2 months

Just returned from my second trip to Scotland. What a beautiful place! Gathered tons of references and tried to visit every castle I could. That was a good boost of inspiration!

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@SzwajkaKacper

Kacper Szwajka

7 months

@GhislainGir All data for meshes is baked with Houdini ( height, branch pivot, branch direction, branch mask, etc. )

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@SzwajkaKacper

Kacper Szwajka

7 months

Working on article " GPU Run-time Procedural Placement on Terrain". Will post it this or next week #indiedev #gamedev

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@SzwajkaKacper

Kacper Szwajka

7 months

@GhislainGir Largest object sample velocity avg value by picking specific mip. There is still lack of randomness per tree in these kind of views but for now this will have to be enough

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@SzwajkaKacper

Kacper Szwajka

3 months

@MarquardtGames Here you may find more about it :

@SzwajkaKacper

Kacper Szwajka

7 months

Inspired by the work of @GhislainGir decided to give a try his method. Created custom particle system and rendered these into flat 2d textures. This gives quite natural natural-looking velocity map + it's simpler to think of the particles as wind waves

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@SzwajkaKacper

Kacper Szwajka

27 days

@dinolordsgame Scattering is very similar to the method I describe here: We have density/size maps and scatter instances around camera/player dynamically.

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GPU Run-time Procedural Placement on Terrain

In this article, I will explain the method for implementing run-time GPU placement of objects on terrain, using Unity engine. This…

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@SzwajkaKacper

Kacper Szwajka

24 days

Highland Keep page is live! 🎉 It took me a lot of work, but my game finally has its own website. For now, there are only a few screenshots but will try to describe more of this project soon Sharing would mean a lot. Thanks! 🙏 #IndieGame

@HighlandKe26288

Highland Keep

@HighlandKe26288

24 days

Step into the dark world of Medieval Scotland! - Fight and explore in a 3rd-person view - Build and fortify your castle from a classic RTS perspective - Create and manage your clan More details coming soon! Stay tuned! #IndieGameDev #GameDev

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@SzwajkaKacper

Kacper Szwajka

1 year

For best WFC implementation I, highly recomend all materials by @OskSta . Here`s my favorite

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ORGANIC TOWNS FROM SQUARE TILES - a talk by OSKAR STÅLBERG at...

Made Bad North. Ex-Ubisoft. Pretty good at procedural generation.About the talkGenerating cozy towns from cubic tiles at interactive speeds through a mix of ...

www.youtube.com

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@SzwajkaKacper

Kacper Szwajka

2 years

Last few weeks struggled a lot with creating a custom terrain system from scratch. It`s so much work to do if you want to implement all fancy solutions from other AAA games. Here is WIP showcase of non-destructive stamps workflow. #gamedev #madewithunity

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@SzwajkaKacper

Kacper Szwajka

2 years

Debug wind forces 🌬️ #unity #madewithunity #VFX #indiedev #gamedev #foliage

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@SzwajkaKacper

Kacper Szwajka

2 years

I Found some old first attempts at creating agents with compute shaders. The gif shows 2 teams of agents that can deal damage, avoid basic collision and follow enemy. Hope you can see anything because the compression is terrible. #madewithunity #gamedevelopment

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@SzwajkaKacper

Kacper Szwajka

2 years

Just discovered "unity-toolbar-extender" and it's a game changer for creating editor tools. Super handy way to quickly enable terrain editing in my Terrain system #unitytips #gamedev

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@SzwajkaKacper

Kacper Szwajka

2 years

🤔 #unity3d

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@SzwajkaKacper

Kacper Szwajka

8 months

Just integrated a new GPU Instancer for terrain procedural placement . Currently, only a few types of objects are added but already looks promising. The next step is to refine terrain mesh generation #GameDev #Unity3D

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@SzwajkaKacper

Kacper Szwajka

27 days

@dinolordsgame Example layers workflow. These are calculated once when the scene loads.

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@SzwajkaKacper

Kacper Szwajka

2 years

Grass needs terrain to grow, so you know ... why don`t create a terrain system from scratch 🫠 #gamedev #indiedev

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@SzwajkaKacper

Kacper Szwajka

9 months

`GPU Rendering Pipeline` Spend definitely too much time investigating `BEST OPTION` so create discussion thread about it. Share if you can #unity3d

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@SzwajkaKacper

Kacper Szwajka

2 years

Baking with TOP networks in Unity #Houdini #madewithunity #unity3d #Procedural #3dart #HoudiniGame #indiedev

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@SzwajkaKacper

Kacper Szwajka

6 months

Recently I had the opportunity to talk a bit about my career path as a technical artist and how I used Unity within it. Also, got a chance to drop a few hints about my current project (super excited about this one!) 😊

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@SzwajkaKacper

Kacper Szwajka

27 days

@dinolordsgame There is also layerStamp version which inherit base logic but have option for custom bounds etc. ( Especially needed for dynamic grass adjustemnts under buildings etc. )

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@SzwajkaKacper

Kacper Szwajka

2 months

I tried few assets and found `Impostor Builder` to be the one which seem to be most scalable and non-destructive. Had to do few hacks to integrate better in editor but these are minor changes cause it allow already for custom nodes etc.

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Impostor Graph | Utilities Tools | Unity Asset Store

Use the Impostor Graph from Lukas Chodosevicius on your next project. Find this utility tool & more on the Unity Asset Store.

assetstore.unity.com

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@SzwajkaKacper

Kacper Szwajka

3 months

@timsoret Yup, I store current + last frame force texture. Also have buffer of size 2 where I store all wind parms ( they may change over time ) It would probably be uniform and better optimized, but I'm leaving it as it is now

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@SzwajkaKacper

Kacper Szwajka

4 months

Some first concepts for peasants level 1-3 #indiegames

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@SzwajkaKacper

Kacper Szwajka

2 years

Working on stamps with the possibility to spawn instanced with async snap to terrain 🌲 #gamedev #unity3d

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@SzwajkaKacper

Kacper Szwajka

3 months

@LordOdin3D

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@SzwajkaKacper

Kacper Szwajka

3 months

My work mainly focuses on all things related to rendering and shaders. You can find much more of it on my profile

@SzwajkaKacper

Kacper Szwajka

7 months

"Efficient GPU Rendering for Dynamic Instances " Uploaded the second part about rendering all this vegetation. If you've ever wondered how to get those dynamic instances running smoothly without frying your GPU, you should check it: #madewithunity

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@SzwajkaKacper

Kacper Szwajka

4 months

Testing shields. Just not sure how `physically` correct a missile test should be. For now, its fully based on shield collider and agents in general aim chest position. However, it is annoying when a random arrow flies right past player and hits arm. #unity3d

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@SzwajkaKacper

Kacper Szwajka

8 months

Version without nodes blending

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@SzwajkaKacper

Kacper Szwajka

1 year

Same aproach could be applied to parallax mapping mats:

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Unity | Heightmap Shadows

Comparison of sampling additional shadows using heightmap textures. Example not based on tessellation or POM.

www.youtube.com

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@SzwajkaKacper

Kacper Szwajka

4 months

Its mainly based on top-down depth map from custom colliders + bit of wind force which increases with player speed

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@SzwajkaKacper

Kacper Szwajka

3 months

So I wanted to give a try method from PathOfExile2 to render micro shadows using objects bent-normals and AO . However, I have absolutely no idea where to inject in HDRP. Any ideas :( ?

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ExileCon 2023 - Rendering Path of Exile 2

A talk from Alexander Sannikov, a programmer at Grinding Gear Games. Recorded at ExileCon 2023.You can find Alexander's YouTube channel here: https://www.yo...

www.youtube.com

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@SzwajkaKacper

Kacper Szwajka

2 months

Finally manage to find `non-destructible` and easy to use impostor workflow and decide to share it because I feel that it is something that a lot of people are missing in Unity.

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@SzwajkaKacper

Kacper Szwajka

7 months

@GhislainGir An additional advantage of this solution is that it allows for various custom events in the game that can be triggered by the player. (wind wave during attack, etc.)

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@SzwajkaKacper

Kacper Szwajka

7 months

@GhislainGir In short, I wanted to have something similar to the one here, but more efficient + have a little more control

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@SzwajkaKacper

Kacper Szwajka

2 years

Was searching for best method to create some grass color variations. Turns out that baking flat color map from mesh generated in Houdini works perfectly. #unity #madewithunity #Houdini #3D #indiedev #gamedev

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@SzwajkaKacper

Kacper Szwajka

2 years

2. This repo helps me a lot in terms of understanding whole process of culling meshes, setup Lods etc. :

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GitHub - Milk-Drinker01/Milk_Instancer01: Unity indirect GPU instancing & painting with occlusion...

Unity indirect GPU instancing & painting with occlusion culling, frustum culling, and LODs - Milk-Drinker01/Milk_Instancer01

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@SzwajkaKacper

Kacper Szwajka

2 years

Been a bit busy implementing farthest grass rendering. But its almost done #madewithunity #unity #gamedevelopment

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@SzwajkaKacper

Kacper Szwajka

3 months

Also have experience in VFX

@SzwajkaKacper

Kacper Szwajka

6 months

🛠️ Excited to unveil behind-the-scenes VFX from "The Inquisitor"! From initial stages to final cuts, dive into our journey. Note: Captured mid-production, final visuals may vary. #GameDev #VFX #TheInquisitor

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@SzwajkaKacper

Kacper Szwajka

6 months

Procedural animation processing ( Thread )

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@SzwajkaKacper

Kacper Szwajka

2 years

Rain VFX 🌧️ #unity #madewithunity #VFX #indiedev #gamedev #foliage

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@SzwajkaKacper

Kacper Szwajka

2 years

Finally, deal with updating cells positions without losing collision data while scattering new grass blades #madewithunity

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@SzwajkaKacper

Kacper Szwajka

7 months

@GhislainGir Velocity on `leaves` level are added by small tile 3d texture.

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@SzwajkaKacper

Kacper Szwajka

11 months

Lately, I spent most of the time refactoring code to allow players to define module `directions` more intuitively. I also divided the entire process into different `define maps` so players can preview and offset entire blueprint buildings #indiegame #gamedev

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@SzwajkaKacper

Kacper Szwajka

27 days

@dinolordsgame Thanks a lot to the @dinolordsgame team and @flarup for letting me share some if this tech. If you are missing some old good rts like Stronghold and would like to see how it might blend with dinos you should definitely check their game 🦖

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@SzwajkaKacper

Kacper Szwajka

1 year

Wave Function Collapse Building System #Unity3d

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@SzwajkaKacper

Kacper Szwajka

2 years

3. Added debug mode for blades joints (using them for collision pass) :

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@SzwajkaKacper

Kacper Szwajka

1 year

Some old screen space grass collision experiments #UnityEngine

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@SzwajkaKacper

Kacper Szwajka

2 years

🥬 #madewithunity #VFX #indiedev #gamedev #games #unity

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@SzwajkaKacper

Kacper Szwajka

2 years

256 layers and 1 sample per pixel? No problem. #gamedev #madewithunity

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@SzwajkaKacper

Kacper Szwajka

2 months

Forgot to mention one more thing that Impostor Graph does well: it captures the true scene Albedo, Normals, and other surface details. This is super helpful because usually, you have to recreate the original shader logic in a special impostor shader, which can be a real pain

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@SzwajkaKacper

Kacper Szwajka

2 years

Optimizing grass blades texture layout for my GPU -based Grass #Houdini #madewithunity #unity3d #Procedural #3dart #HoudiniGame #indiedev

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@SzwajkaKacper

Kacper Szwajka

2 years

4.Also implemented rendering of the farthest grass cells. (it's not on the GIF). Jeremy Moore lecture inspired me a lot in terms of arranging and linking data on the GPU ( have to admit that `writing own terrain system` is now on my checklist 😅)

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@SzwajkaKacper

Kacper Szwajka

11 months

Prototyping tool for adding windows and doors. 🏰 I'll likely need to redo it, as it becomes hard to read with too many dots. The UI here is just a placeholder. If you have any suggestions or good references, please let me know. Thanks :) #gamedev #indiedev

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@SzwajkaKacper

Kacper Szwajka

4 months

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@SzwajkaKacper

Kacper Szwajka

1 year

If someone would like to dig even more:

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@SzwajkaKacper

Kacper Szwajka

7 months

Started with a classic method: scrolling noises in one direction. But getting the physics right at different wind speeds, and making a convincing velocity map, meant juggling tons of parameters and textures

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@SzwajkaKacper

Kacper Szwajka

2 years

Working on texture mask painter to determine grass height for my GPU Grass system. Next step is to move everything to Edit Mode. #unity #madewithunity #VFX #indiedev #gamedev #foliage

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@SzwajkaKacper

Kacper Szwajka

1 year

Going somewhere. Added support for collections #madewithunity #gamedevelopment

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@SzwajkaKacper

Kacper Szwajka

3 months

@SrRafles Exactly this 😅

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@SzwajkaKacper

Kacper Szwajka

17 days

Experimenting with a modular head approach for my solo game project The goal is to render 30-40 characters on screen, so performance is key. I'm still figuring out if this is the best approach, so any suggestions are welcome!

@HighlandKe26288

Highland Keep

@HighlandKe26288

17 days

Working on a new facial expression system! The goal is to keep it optimized for performance, so we can have as many characters on screen as possible, while still capturing key emotions and expressions #unity3d #indiedev

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@SzwajkaKacper

Kacper Szwajka

7 months

Just realized that speeding up this gif 2x wasn't the best move

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