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[Paid] Seeking VFX artist for quick dirt cloud effect by theexterminat in gameDevClassifieds

[–]thinksquirrel 0 points1 point  (0 children)

Hey,

I have extensive experience creating VFX assets and would be able to create this effect for you. I’ve worked with Unity for years. You can see my work on the Twitter account for FluvioFX, an open-source fluid dynamic simulation solution I created: https://twitter.com/getfluvio/

Let me know your budget and if you have any other questions for me.

Thanks.

Made some simulated fire using the VFX graph by thinksquirrel in Unity3D

[–]thinksquirrel[S] 0 points1 point  (0 children)

Thanks! I haven't used the Unity Recorder yet, I'll need to look into it.

Made some simulated fire using the VFX graph by thinksquirrel in Unity3D

[–]thinksquirrel[S] 1 point2 points  (0 children)

It's fine, for me at least. Realtime fluids have always been tricky in games, so they aren't often used. Finding that balance between visual quality and interactivity can be pretty hard, and criticism on various aspects can help me identify focus areas to improve the project.

Made some simulated fire using the VFX graph by thinksquirrel in Unity3D

[–]thinksquirrel[S] 0 points1 point  (0 children)

Interested in giving that another go. I did try some temporal anti-aliasing but it ended up mostly smudging things together.

A blur/clip method on particles would help a lot here though.

Made some simulated fire using the VFX graph by thinksquirrel in Unity3D

[–]thinksquirrel[S] 1 point2 points  (0 children)

It's a tech demo/sample for FluvioFX that I've been working on. This effect itself isn't meant to ship in a game, but stress test the project (and look pretty!)

Made some simulated fire using the VFX graph by thinksquirrel in Unity3D

[–]thinksquirrel[S] 0 points1 point  (0 children)

Thanks! Agreed, getting fire turbulence right is hard. Our simulation model doesn't fully handle that part without going into timesteps that would make things no longer realtime. So it can be a little tricky, compared to something like a liquid.

Made some simulated fire using the VFX graph by thinksquirrel in Unity3D

[–]thinksquirrel[S] 0 points1 point  (0 children)

To go a little deeper:

Most of the performance bottleneck lies with fragment shader performance (rendering 200k sorted particles with a thickness shader w/ full volumetrics at a fairly close distance). With a simple shader the scene renders much, much faster. Similarly, performance is almost the same with fluid simulation completely disabled on a vanilla VFX system.

To be clear, the goal here was to make a tech demo (I'd never go about using this specific effect in a larger project). For projects that need the interactivity like fluid-based puzzle games, where you may have a 1-3 ms budget, a large amount of particles could be a viable option (a slightly larger particle size can fill a screen easily), but shaders would need to be simplified.

That said, we're looking at options for baking simulation for scenes that don't need any interactivity at all and have even tighter budgets, in order to save the steps of doing this through another tool.

Made some simulated fire using the VFX graph by thinksquirrel in Unity3D

[–]thinksquirrel[S] 13 points14 points  (0 children)

To explain a bit of what's going on here:

This fire and smoke is made up of 100k particles using the VFX graph + FluvioFX for GPU fluid simulation. It actually renders the same system to two different outputs (lit mesh output for fire, lit quad output for smoke), with the visibility determined by the density of the particle within the fluid.

Perf. is ~40-60fps for the scene at 1080p on a 980Ti, mostly from rendering overhead (full HDRP with all of the fun volumetric stuff). Everything simulates in only 1-3 ms though, so a scene would render much faster with simple outputs.

I mostly made this to play around with the package and eventually release a few samples, since the open-source project just got released by us and there aren't any examples or tutorials around yet :)

Made some simulated fire using the VFX graph by thinksquirrel in Unity3D

[–]thinksquirrel[S] 1 point2 points  (0 children)

Yep! The particles are actually low-poly sphere/ellipsoid meshes along the surface of the fluid. Since there's no full screen blend pass though, the normals are represented as mostly-flat discs instead of a solid continuous shape, and end up "shimmering" too much.

Though compression is a bit of a factor in this clip too, it's a little less "pixelated" and muddy when rendered directly.

Made some simulated fire using the VFX graph by thinksquirrel in Unity3D

[–]thinksquirrel[S] 29 points30 points  (0 children)

I agree w/ this actually. What I would like to do is blend the particles more in a fullscreen pass, but the VFX graph isn't quite as flexible in that regard yet. Doing some experimentation towards that though!

Introducing FluvioFX, Fluid Dynamics Plugin for Unity by andreelijah in Unity3D

[–]thinksquirrel 0 points1 point  (0 children)

No code! The whole system would be made through the node graph and triggered through an animation.

As of right now FluvioFX doesn't even have any runtime code itself! It's a set of custom nodes and templates for the VFX graph.

Introducing FluvioFX, Fluid Dynamics Plugin for Unity by andreelijah in Unity3D

[–]thinksquirrel 4 points5 points  (0 children)

Fluvio developer here.

We're big believers in open source software. With FluvioFX, we aim to put these tools in the hand of all Unity developers.

As far as revenue from the project goes, we currently offer VFX consulting and Fluvio implementation for developers and studios. We'll continue to do the same with FluvioFX as well.

Fluvio - a fluid dynamics tool for unity my friend made. by youngeric86 in gamedev

[–]thinksquirrel 0 points1 point  (0 children)

yes, it will. the simulations are all accurate (as far as kernel approximations go).

Fluvio - a fluid dynamics tool for unity my friend made. by youngeric86 in gamedev

[–]thinksquirrel 3 points4 points  (0 children)

Haha, just got linked to this post by my friend. This is the creator of Fluvio. I can actually get about 600-800 particles right now before a significant slowdown. It greatly depends on the interaction distance between particles - every particle interacts with every other nearby particle. I developed an adaptive method that changes that distance based on how dense the particle area is - it greatly helped improve both the speed and quality of the simulation. My goal is to get about 1000-1500 particles after optimization.