✨┃vfx-and-particles

[ashen wigeon]

I have some smoke particles attached to a car, and I want to them only moving up when the car is stationary, and move up and slightly backward when the car is going fast.. how can I do it?

Because if I set the position as local, the particle will always follow the car (going always up), while if I set it as global, when the car moves fast, the particle is spawned "too much back" (it becomes more like exhaust smoke which is not what I want)

[prime dome]

i needa create something like this

yknow what i mean

?

someone made a tutorial but

it isnt getting the effect i want

[ashen wigeon]

Guys how can I change the spawn rate of particles from code? Because I have this setup

And when I run it with this code:

public partial struct SmokeOnLowHealthSystem : ISystem
{
    public void OnUpdate(ref SystemState state)
    {
        foreach(var (smokeOnLowHealth, health) in SystemAPI.Query<SmokeOnLowHealth, Health>())
        {
            uint particlesCount = health.Current;

            smokeOnLowHealth.SmokeVFX.SetUInt("SpawnRate", particlesCount);
UnityEngine.Debug.Log("Current particles: " + particlesCount); //THIS IS PRINTED TO THE CONSOLE
        }
    }
}```
I can see in the inspector the value changing, but as you can see the particles still spawn on the car

[hidden quarry]

Does anyone know why the particle won't play with .Play()? it works, everything is fine but it'll only plays once automatically when the item is instantiated and then won't play again when called with .Play()

[spring mural]

try unchecking the checkbox next to SpawnRate in your second screenshot

[ashen wigeon]

Nope, still doesn't work.. I unchecked it at the start and then my code apparently changes the value and also automatically rechecks the checkbox, but it doesn't work

[pastel fossil]

Hey, how can i make bunch of particles move randomly in a wave but at the end reach on common point.

Something like a beziar curve

This is what i am trying to make in unity btw
https://youtu.be/jD9tRD9A2uk

[latent chasm]

I have a prefab made with VFX graph, I'm not really familiar with it and just trying to speed up the effect. Is there an easy way to do that for someone with no experience using VFX graph?

[pastel fossil]

How can i make decal particles with shuriken system

[warm torrent]

No such option in Shuriken, to my knowledge
You could use particle collision events to instantiate decal projectors at a particle's position on impact, facing towards contact point

[pastel fossil]

Eh ill just use vfx graph

Is there any way to detect collission of a mesh in vfx graph and a player?

[warm torrent]

No such option in VFX Graph, to my knowledge
You could have a Collide with Cylinder block that gets its position updated by a script to match player position, but afaik there's no way to get any information out of the collisions

[pastel fossil]

Hmm ok

[pastel fossil]

There's another question...

[warm torrent]

There's many tutorials about curve paths for both VFX Graph and Particle System if you search for them

[pastel fossil]

alr ill look for them

I was not getting the right word for it

[prime dome]

How can I make particles get sucked in with the default system?

So instead of flying out from a point they fly into the point

[pastel fossil]

I made a decal in vfx graph that glows for a bit and then turns black on impact, but i want to make the same with unity particles system. I can make with normal decals but not animated ones.

[warm torrent]

Negative radial velocity over lifetime, or particle force field with negative gravity

[prime dome]

Oh alright ill try that out thanks

[umbral ledge]

Anyone know how to make good stylized waterfall?

[warm torrent]

I've met many such people in my time

[umbral ledge]

Do u know who I can reach out to

[dark kestrel]

Anyone know why all of my Visual Effects in a scene are coming up in my frame debugger draw calls? Only a few are viewable to the camera but every single one is showing up in VFX.Update

Been playing with Bounds Mode and cannot seem to get only the viewed VFX to be drawn

[warm torrent]

Are you asking because you're curious how to make that kind of effect, or are you actually looking to hire someone to make one or to tutor you?

[dark kestrel]

Ahh was missing an extra step. Changing it on the graph alone isn't enough, need to change it on the actual inspector of each graph asset. Just reduced my draw calls to about 15-20% of what they were previously.

[umbral ledge]

to hire someone to make for my game

[warm torrent]

!collab

[gleaming flicker]

📢 Collaborating and Job Posting

We do not accept job or collab posts on discord.
Please use the forums:
• Commercial Job Seeking
• Commercial Job Offering
• Non Commercial Collaboration

[wary sparrow]

what is this and how do i fix it

[sinful vale]

currently I have an particle effect, but it somehow always render on top regardless of position, is there a way to make the rendering layer the same as the world object, so it will be hidden if there is object on top of it?

[elder latch]

What is the correct way to spawn a fixed amount of particles with a delay between each spawn? Right now it seems neither Burst nor Sequencial Spawn blocks can handle this.

[pastel fossil]

Hey, is there a way to make output particle forward decal in shuriken system like it is in vfx graph?

[manic scroll]

Hi! i made a trail particle and it works but when i set a parent to it to follow, it doenst work or render idk whats happening but i cant see the trail. Any idea how i can fix it ?

[warm torrent]

Are you talking about Particle System, VFX Graph or Trail Renderer?

Even still "doesn't work" isn't much to go on

[vagrant imp]

Good starting point for pixel VFX?

[warm torrent]

What do you mean exactly by pixel VFX?

[vagrant imp]

https://youtu.be/JZDlCuIpq9I

Something like this, but this seems advanced

[warm torrent]

I wouldn't call it advanced
It's just one technique for getting one style of pixelated effect
Other techniques I've seen are usually more complex

If you're on built-in render pipeline you can use pixel perfect camera component's upscale render texture setting to "pixelate" the whole screen, including any particle effects

[gusty linden]

Any clue why these particles wouldn't be appearing in game view.
They appear to be on a flat plane rather than facing the camera.

[warm torrent]

You'd have to rotate the particle effect gameobject, or more likely the spawn orientation from Shape module

Objects that are outside of the camera's near or far clipping planes or made of two-dimensional geometry viewed along its edge won't be visible

[gusty linden]

Shouldn't be inside the clipping plane as the camera is 10 units back, in regards to the orientation it appears that selecting circle as the shape automatically rotates it to face the camera for a 2D game but it doesn't really obey it's rules when in playmode, throwing particles in more of a 3D sphere way.

These are the current shape settings:

Also setting them to billboard should make the particles face the camera but it appears it does not.

They're kinda facing random directions.

Solved it.

[warm torrent]

What did you find

[surreal oxide]

Is there any way to make a fake bloom effect without URP?

Maybe with particles or smth?

[gusty linden]

In code with: ParticleSystem instance = Instantiate(zapperParticle, contactPoint, Quaternion.AngleAxis(90,Vector3.right)); I was using a Quaternion.Identitiy prior.

[warm torrent]

I see, usually Shape module can't change by itself where the particles face
Do check Render Alignment in Renderer module, as billboard type particles can have varying alignments

View alignment should work for 2D games just fine

If not, there's always World

[gusty linden]

I did but the billboard failed to work, this brute force method is a good replacement.

[surreal oxide]

Is there a way to make a glow effect without URP?

[warm torrent]

Of course
There are many sorts of "glow effects" though

None of which exclusive to URP

[vast plank]

Can anyone help me out here? I'm generating particles for a particle ribbon at once along a circle using a "Set Position (Shape: Arc Circle)" node, and changing the Arc Sequencer value based on the index of the particle. This is to create a slash effect. Sometimes when it generates, it gets super tangled up like the first image. This problem becomes worse and more common the more particles I generate along the circle. The first image is exaggerated using 200 particles, in which it happens pretty much every time, but typically I use around 40 in which it happens maybe about 10% of the time.

[south thorn]

Is there a way with the particle system in 2D to define an area for spawn? We have circle, edge, sphere, but I didn’t see a customizable polygon option

[vast plank]

Shuriken or VFX graph?

[brave trail]

Please help me how to fix the screen I can't see from the model?

[hearty flare]

https://help.vertx.xyz/interface/scene-view/clipping-planes

[brave trail]

Thank you

[vale blaze]

The light particles (candelabra) look as they should up close.

However, they appear significantly larger when the camera is farther away.

How can I fix this?

[vale blaze]

Here are my settings.

[warm torrent]

Your max and min particle size in Renderer module are squashed so close that the true particle size itself is effectively ignored

Max and min sizes in Renderer module are relative to screen space

Basically the particles are huge, but max size is clamping their visual size

[vale blaze]

How do I adjust the "true" particle size?

[warm torrent]

Any other size variable besides those in Renderer
Start Size in main module, for example

For min and max size I'd use the default values 0 and 0.5 respectively

[vale blaze]

Setting start size to a value like 0.0001 makes no difference between that and 1

It's very large

[warm torrent]

The sizes properties within each module (besides Renderer) are multiplied together to produce the final size
In addition all transform scales are inherited down the hierarchy from parent gameobjects

What probably is happening is that the particle system is parented to a mesh that has a scale of 100

Or maybe several

[vale blaze]

Nope, all the parents are 1,1,1
And adjusting the scale of the particle GameObject itself makes no difference

[warm torrent]

What are the renderer min and max sizes when it does this?

[vale blaze]

I think i managed to fix it, but I'm not sure how to reproduce the steps, I just continually played with the min and max sizes.

[warm torrent]

You shouldn't need to touch the min and max sizes
I'd make a new particle system gameobject adjacent to it in the hierarchy to confirm that it doesn't inherit the problem, and if not maybe swap to using the new one

[carmine ether]

Hi. Does anyone know how I could recreate these effects with particles or something please? I just have no idea how to make this effect look accurate😅

[frozen kraken]

Hey everyone! I want to transfer a particle system from Shuriken to VFX Graph and I can't find any info on using Custom Vertex Streams with the VFX Graph. Can you suggest a good tutorial?

[rich ember]

anyone got any idea how I could recreate a plexus effect in VFX graph?

https://youtu.be/HqbAoRpC3HM

someones made it here with the normal particle system

but I want to experiment creating it in vfx graph

I assume it would entail creating a particle strip on a gpu event from an existing particle, and then spawning another particle at the other end of the strip?

or is there a way to spawn a strip and feed it the location of two other particles to bridge them

ik the specifics of plexus effects are also tied to each particle having a radius around it that it can connect to other particles with, as well as a limit of how many connections it can make

[orchid nexus]

Guys, i used this tutorial here
https://youtu.be/jQbzqFjyrwg
And for some reason, even if i have both particles color set to white, the fog has blue and green color. It also happens even if i delete the random color node

[halcyon forum]

Does anyone know or have a tuto how to make when a particle hits the ground it starts an animation like a splash ?

[vast plank]

I have three static particle systems laid out in a line, how can I make the render order based on which is closest to the camera? I know I can manually edit the render order here, but I'm not gonna be looking at it from just one angle

I know that particles within a system can sort based on camera, but is there a way to have this behavior across systems?

[vast plank]

Okay I feel like I'm going a little insane because I can't find anyone talking about this: the VFX graph system seems to have a bug with particle IDs? I thought it was an issue with the way I made my graph, but an extremely simple graph like this does not work properly either. It's a simple particle strip system where the position is set sequentially along a circle. However, at high particle counts, the index seems to be off for whatever reason, causing this:

my example above is at 200 particles, whereas this is what it looks like at 20:

Slightly higher numbers like 40 or so particles causes the issue but only sometimes when the particles are initialized

[vast plank]

aaaaa okay nevermind. I literally figured it out by accident right as I made this post. You can use a spawn index in strip node and plug that into the sequence with index set to "custom". I guess that Index in strip and the particle index aren't always aligned? I'm not sure if that's a bug or a consequence of making particles in parallel with the GPU (or at least I assume that's what's happening in my very uneducated opinion)

[carmine bone]

I tend to fall more under the programming side of things and I'm not really an artist type of person, but it would be extremely helpful for me to learn how to do some basic work with vfx & particles. I was wondering if there was any good resources to look at for learning how to get a handle on VFX.

[orchid nexus]

Hello, guys, how can i make a surrounding - player fog effect? It would look like some very strong vignette, but more pixelated and it would interact with lights

[warm torrent]

I'm not sure exactly what kind of fog you're imagining precisely
Only volumetric fogs such as the sort in HDRP actually interact with light
You can still fake interactions using light halos and beam sprites or particles

[orchid nexus]

Hm. I will try it

[crystal wave]

hello

[warped sleet]

I wrote on the forum but thought I'd try here too...

What is the best way to optimize particles with Output Particle HDRP Lit Quad? With rate/capacity parameters = 500/1000 I have 30 FPS. When I change Output to Output Particle Quad then with the same parameters I have 60 FPS. I understand that LIT requires lighting calculations, but is there a way to optimize this? It's a simple smoke effect. I plan to have a day and night system in the project so I would prefer if the smoke reacts to the lighting.

[steep holly]

sup how do i make muzzle flash using particles

cant find any vids online ;-;

or just fix my problem in the vid

i want it to be like horizontal

nvm i just dont want it

sorry for this big message ;-;

[warm torrent]

You can control rotation in Shape module, or with an argument when you instantiate
Remember to set Stop Action: Destroy in main module if you're instantiating clones with no other way of culling them

[warped gate]

Why does unity keep a temporary un-used transparent version of a mesh used in a vfx graph??? I have depth-based lineart rendering and it keeps fucking up with it since there is clearly something being rendered but its a transparent mesh thats nowhere to be used. I checked and yes it comes from the vfx graph as soon as its enabled

as you can see it doesnt even show the actual laser particle in the wireframe view

why??

alr I checked for the output to be alpha and not opaque and now its not rendering the lines for it, but im still curious as to why unity does this?

[junior thistle]

does anybody know what might cause a light not to show up when using the particle systems? I have a muzzle flash light that shows up in the editor but doesn't in runtime

[noble osprey]

Hey all, I was just wondering if there was a way (and if anyone knew how) to kill particles based on collision with a collider? For example, I have particles emitting from a mesh object and travelling to the player, all this is working great. But I would like the particles to die as they hit the player (distance between the player and emitter object is never the same, so a lifetime thing wouldn't really work).

Using vfx graph btw

[prime dome]

Anyone know how I would get each output particle to start at a random point in the flipbook?

[safe sparrow]

how do i make a basic "Water splashing on a surface" effect? i have HDRP on my project and im trying to figure out a way to make it so that when my water projectiles hit a surface they create a reflective splash on the collider that they hit

right now my solution is to use a mesh that is instantiated onto the surface, but unless i make it fully opaque it cant have SSR, and even then it doesnt look good, mainly because it doesnt look like water

it just looks like i hung up a shattered piece of mirror

i dont know how to make the surface look genuinely wet

[prime dome]

If the projectile itself is in VFX-Graph, then add a Collide with Depth Buffer node and set the life loss to 1, then add a Trigger On Die event after that and just hook it up to a splash effect

[safe sparrow]

mainly because im not sure how to programatically change material metallic maps

[safe sparrow]

im not using VFX graph

just stock HDRP

[prime dome]

gutted

[safe sparrow]

what

[prime dome]

it's a shame your not using VFX-Graph, you can do this stuff easily.

For example, I made rain drops come off my tree foliage and cause splashes 🙂

https://streamable.com/losuwj

[safe sparrow]

well i mean thats not really what i meant for splashes, i guess i worded it wrong

[prime dome]

your probably referring to Impact Effects

in which case theres tutorials on that on YouTube

[safe sparrow]

i meant how can i increase the smoothness on a portion of an object

[prime dome]

oh, thats more of a shader question, so wrong channel unfortunately

[safe sparrow]

like i have water that can hit surfaces and particles for splashing off, im done with that, im just figuring out how to make it look like it left a wet splotch

[safe sparrow]

oh, i figured itd be VFX

since im doing this sorta all at runtime.. oh well

[prime dome]

you CAN do it with VFX, you can spawn Decal Projectors

[safe sparrow]

ill have to look up what those are

[prime dome]

and just project a smooth puddle where they collide with the surface

[safe sparrow]

oh yeah that looks like what i want

[prime dome]

👍

[safe sparrow]

yeah thats like what i want, thanks

[safe sparrow]

ok so i have just one question

how do i make decals additive?

i notice they clip with eachother, how can i make them additively stack on eachother?

[junior thistle]

https://streamable.com/bn2x2v

why does this happen?

how can I get the rings to stay horizontal?

[clear spruce]

you have to figure out why are they not. how do you spawn them? do you assign some rotation to them at that point?

[junior thistle]

For testing, I'm instantiating this game object you see first on th position of whatever object hits the water

rotating that first object has no impact on rotation of the instantiated rings, in fact rotating does nothing

I rotated the shape of that first particle on that ground and only that one works...the instantiated ones don't copy the rotation

[clear spruce]

so are the instantiated particle effect objects titled or is the effect itself within the object?

[junior thistle]

the effect within the object is tilted

I rotated the shape component

I tried rotating the object itself to no avail but maybe it spawns with the default rotation or something

[clear spruce]

can you show the script that instantiates the effects?

[prime dome]

Anyone know how to make each particle start at a random point in the flipbook?

[junior thistle]

Sorry, I use playmaker for coding

this is how it looks like

That probably doesn't help you. I can also show the action scripts (cause playmaker is backed by c#) but it includes all the UI and options for playmaker actions and not just what I input

[warm torrent]

I can't really interpret this but it doesn't sound sensical that Position and Rotation are both "none"
The issue seems to be that the particle effect is created not only with position but also rotation of the initial object

[junior thistle]

position none is fine because that one is for vector 3's. I spawn on a game object instead

as for rotation, maybe, I'll try rotating the whole particle system but it doesn't rly make sense to me since I rotated the effect via particle systems and not the object transform

[copper dawn]

How do you prevent changes in size in one column from affecting the other? Is that not how it works and you need to make a new part entirely?
https://i.gyazo.com/98a08a6b75074c3cae51e398c9e92847.png

[willow turret]

So do particle systems not have that play on awake checkbox or am i just blind?

[willow turret]

nvm. I found it. Got too used to looking through the modules

[deep eagle]

Hey, how would I pack a bunch of parented particle systems into a prefab? Been scratching my head on this for a while

[safe sparrow]

a few questions about decals:

how do i make a decal subtractive rather than additive

how do i make decals add onto eachother

How do i make decals affect surface transparency without affecting surface color

[drifting jacinth]

I am currently implementing a shooting laser effect using a Trail Renderer in my FPS game. I have also set up a similar laser effect on the enemy object, which is visible in the game. However, when the player shoots, the red laser effect is not visible on the camera, which is a child of the player object due to the FPS nature of the game.

While the player laser effect is functioning properly, it is not as visible as desired. Can someone please guide me on what could be causing this issue?

[winged wagon]

cant seem to figure out how to make a 2D particle system that doesntt need light

[late frost]

Hi Im trying to add transform of the skinnedmesh but whenever add it, my particles don't work afterwards.

[topaz juniper]

I'm having an issue where particle effects are waiting until they are on-screen to fire and a ton of them are building up and crashing my game. Does anyone know if there's a setting to fix this?

[elfin bison]

question about the built in particle system: Is it possible at all to change the shape of the collider for particles? I see I can change the radius, but I'd like to use the particle system for attacking in a game that is similar to binding of isaac but melee attacks would have a long particle instead of a perfectly round one. I know I can make the radius a bit oversized so it reaches towards the long ends of the particles but that's not really ideal since there would be quite a bit of empty space in front and behind the particle that would be considered a hit, so if it is possible to change the shape i'd like some resources i can use to read up on it, or even suggestions on alternate options so i don't have to go and instantiate a bunch of objects for this (although i might if there is really no other alternative)

[frigid haven]

Hya, I have two systems that both use a set position from arc circle and the circle is the same, the spawn mode is set to RANDOM but both systems get the same random position for all particles, is there any way to start them with a different seed for the randomizer?

[ashen robin]

Doesn't the random number operator have a field to change the seed?

[frigid haven]

It does but the random from circle does not

And it gives the same position for different particles

[ashen robin]

just make the operator and plug it in with another seed

and see if that works

[clever star]

How do i create a Unlit graph?

[clever star]

I see people using something called Unlit master, but i can't seem to find it anywhere

https://docs.unity3d.com/Packages/com.unity.shadergraph@6.9/manual/Unlit-Master-Node.html

[ashen robin]

That's for the shader graph. If you want to use unlit particles, you'd select that in the output node in your particle system.

[clever star]

I'm not making a particle system, i'm just trying to make a Unlit Graph but i can't see it :d

Someone told me to ask about this here but i guess i shoul've asked in shaders

but as you can see, there is no unlit graph

but i'm lookin at this guy's video and can't seem to find it

[ashen robin]

Did you install the shader graph package from the package manager?

[clever star]

yes

[ashen robin]

Hmm, probably better to ask in #archived-shaders or even #💻┃unity-talk since it could be a version problem

[clever star]

ok

ty

[ashen robin]

I know for sure built in and urp support it so I'm not too sure what else could be the problem if you've installed it already

[clever star]

yeh, been lookin for the problem all day lol, for a simple create thing xd

[potent jolt]

Hello guys, I'm trying to create a horseshoe trail with a simple glow on it, so I've created the horseshoe as a trail and added the glow as a its sub emitter. Problem is, the glow spawns at an offset and I can't figure out why. Any ideas ?

[shut cliff]

@potent jolt Some things to check:

1. Are both textures are centered in the texture files?
2. You're not using Stretched Particles for any of the particles?
3. Check if the Shape settings have a position offset

For the sub-emitter glow you should probably be using an Emission burst of 1 at 0.0 seconds and not Rate over Time

[potent jolt]

Thanks for your answer. The horseshoe texture was a bit off centered indeed, but what did the trick is that the horseshoe was using a mesh as render mode while the glow was using a billboard. Setting them both as billboard fixed my problem.
Thanks for suggesting the stretched particles, that's what made me realize my mistake !

[noble osprey]

Hi all,

I've been trying to figure this out for a couple of days but don't seem to be getting anywhere.

I have particles emitting from a mesh and moving towards the player (think a 'collection visual'), which is working great, but I would like the particles to die as they reach their destination. Because the distance between player and emitter object isn't fixed, timing the particle death doesn't really work.

Anyone have any ideas on how to achieve this? (I thought I could have the particles die on hitting the players collider, but can't find anything to do with how to do that in my searches.

Here's the graph if anyone can help. 😕

[ashen robin]

Try this perhaps.
https://docs.unity3d.com/Packages/com.unity.visualeffectgraph@7.1/manual/PropertyBinders.html

At the moment, passing scene collider information into the VFX graph isn't possible. What you can instead is make the mesh that's emitting the particles the object which moves and collides. This means you would instead write the logic for the mesh (or perhaps an invisible game object that is created from the mesh location) to move from a script, and use the vfx to follow it instead. There's a few tricks like that you can do.

[noble osprey]

@ashen robin Thanks for the suggestion. Unfortunately having the emitter object moving isn't really possible (the vfx graph is part of a mining system whereby as the player is using a mining laser particles emit from a rock/asteroid/item and move to the player (giving the sense that the resources in the item being mined are transferring to the player). I did have an idea this morning, but will have to investigate a little further using the kill box/sphere blocks.

[noble osprey]

Figured i'd post this here so you can see what I'm trying to do 😉

[ashen robin]

Ah, ok so I think you're probably on the right path using the kill sphere and just updating it with the target position.

[noble osprey]

@ashen robin Yeah that was my thought. I'm already grabbing the player position so shouldn't be too difficult 🙂

[ashen robin]

The only problem is getting the information back, as if you were updating your resources counter per particle.

Like incrementally, but there's probably ways around that.

[noble osprey]

Ah, no the resources counter is going to live 'inside' the asteroid, the particles are just a visual.

[ashen robin]

Ah, got it. Sounds reasonable then.

[noble osprey]

Well it will when I figure out Scriptable Objects. lol. Currently a GameObject and I know how to get the data out etc. using GO's, but very new to SO's

[digital matrix]

hey im having a problem

when i apply a material to the body it automatically gets applied to the eyes

any way to texture them seperately

or seperate the meshes

[dusky birch]

can i make the particles go in a certain direction?

[errant terrace]

Yes, the Shape and Velocity over lifetime modules have most of the settings related to that

Might need to change the simulation space to local too

[dusky birch]

my game is 2d

okk got somewhere

[dusky birch]

can you tell me where i can find smoke or fire effects or do i make them how does that work?

[errant terrace]

A. Look for them on the asset store/google
B. Learn to use the particle system or VFX graph

Those are your options

[dusky birch]

so i can make the effects within unity?

[errant terrace]

Well the effects yes, but you would need some textures too

[dusky birch]

okk let me search the asset store

one last thing

will the particle effets of 3d work with same for 2d

[errant terrace]

Heres some free animated particle textures from Unity:
https://blog.unity.com/technology/free-vfx-image-sequences-flipbooks

[dusky birch]

or will my pc explode

[dusky birch]

tysm

[errant terrace]

I think yes, but you need to mostly make the move in the world's X and Y axis, not Z

[dusky birch]

Flipbooks
EXR Sequence
TGA Sequence
there r 3 options i can use any?

[errant terrace]

Flipbooks are one image that has all the animation frames in it.
Sequences are separate images

[dusky birch]

oh okk thank u

[errant terrace]

You probably want flipbooks and then use frame animation in the particle system

[dusky birch]

thank u so much

[dusky birch]

is it the texture or m i doing something wrong?

[errant terrace]

You need to set Frame over time to a curve that goes from 0 to 1 (or 0 to 64)

Because it's an animated sheet, the frame needs to change

Also use a material/shader that works with alpha, and make sure that alpha is enabled in the texture import settings

[dusky birch]

😵‍💫

Let me learn from scratch

Thank u

[pseudo inlet]

I have an interesting bug… wondering if anyone has run into it before. I have a particle system that won’t show in the game view when it’s docked next to the scene tab. However if it has its own view window it shows.

edit: seems to have had something to do with replaying particle effects. Instantiating a new effect seems to have served as a work-around. Using Unity 2021.3.9f1

[fossil spindle]

I'm not entirely sure which section this falls under in terms of graphics... so I'll ask here and let me know if this is the incorrect spot and I'll move over (since I don't even know which part of unity would produce what I want)

I'm working on a space game similar to eve and I have been messing about with space engine to provide some cool skyboxes, and I got this

But I'm wondering what things in unity could instead render that star lighting in-scene so it can be reactive when an entity passes over it (instead of it being rendered with the skybox)

Like what tools could I use to achieve that?

[ashen robin]

Could create a gameobject in the distance and use post processing + bloom with some intense light emission. Maybe some directional light?

would need to change the destination of it relative to your ship if it's an area you're not able to travel to through normal means.

[fossil spindle]

My plan is to make warp areas with possibly different skyboxes and switch between them in each warp, but you'd never be able to go to the star itself.

That's a good idea though using post processing for that. I'll keep it as a thought. Wondering if maybe anyone else can chime in with ideas as well I'll just try everything tbh haha.

[warm torrent]

You'll probably want to use a lens flare component in Unity instead of the skybox renderer

[fossil spindle]

Ohhh yes, a lens flare! That's actually kind of obvious I didn't really think of it haha

[warm torrent]

There are also some techniques in the realm of CGI to sync a directional light with the HDRi's sun so you get shadows from it, but I think that requires for the HDRi sun to be dimmer so you don't get two separate sun sources effectively

[fossil spindle]

Ahhh gotcha gotcha. That's actually a thought. I can also customize it individually.

I can probably compute the lens flare and hdri sun? Since it'll probably be programmatically built and generated

[warm torrent]

HDRis are images so you can't modify them much at runtime practically
It might be better to use an entirely procedural sky shader if it needs to change a lot

Similar to the default sky in function

[fossil spindle]

I was thinking of something similar. However I think if it's that complex I may put it on the backburner for now and pick it back up as the time gets closer.

What I wanted to do was kinda have a custom skybox generator that generated skyboxes at runtime based on some parameters

But not sure how hard that'd be haha

[warm torrent]

Harder and less flexible than doing it fully realtime with a shader, probably

[eternal whale]

how to get the option to edit alpha?

[warm torrent]

It's the notches on the upper edge of the gradient bar

[mystic summit]

im making an extinguisher, and so i have two particle systems:

1. Extinguisher particles
2. Fire particles
   i want to make them delete themseles upon contact with each other. Im kind of almost there.

The question i have is, how could i make the fire stop generating particles in the specific areas where the extinguisher particles had already been at?

i dont want all of the fire particles to go away, but just certain areas where i dont want them to keep generating after the fire was put off

[warm torrent]

Usually the way these things work is that the fire is composed of multiple gameobjects, each with a collider and a fire particle system
When the extinguished particles (or otherwise a raycast or a projectile from the extinguished) hits them the objects will be destroyed (or lose "hp")

Trying to make specifically the particles destroy each other sounds like an awkward way to go about it

[mystic summit]

ohh i could use a raycast that to inabilitate some areas

thats a good idea

[ashen robin]

Yeah, that seems a little complicated unless you want to spawn hundreds of particles/gameobjects with colliders

which is possible if you want to spend the power to process it all

[warm torrent]

Having individual "blobs" of fire source gameobjects with their individual life cycle is by far the simplest way
The downside is that their number may grow large

The kind of optimizations available to you kind of depends on what your scene is built of

If you have 2D or 3D tile system you'd be able to utilize that for fire as well

[mystic summit]

alright guys you gave me some ideas, i think i can work with this thanks a lot!

[warm torrent]

You may be able to emit from vertex colors or textures somehow, and have fire "paint" the surfaces to mark them as emission sources and the extinguisher erase it

But that's much more complex as it requires you to have such a painting system to begin with and to assign the meshes dynamically to the fire systems as they start burning

[sour spade]

So particle systems have options for stopping while allowing the particles to remain until they expire via particleSystem.Stop(true, ParticleSystemStopBehavior.StopEmitting);, however particleSystem.Play() doesn't have this same option.

Does anyone know how to play a ps while keeping any particles that were there originally?

[ashen robin]

Could consider detatching an instance of the particle system. I usually do that for projectiles that leave some sort of smoke or sparks behind.

[verbal onyx]

Could someone help me make it so that a particle effect plays 'When selected'

I have the particle effect as a prefab, but how do i play it 'When Selected'?

[warm torrent]

ParticleSystem.Play()

I have no knowledge of how your selector script works, but I assume you'll want to assign the particle system to the "When Selected" list

[verbal onyx]

What about if when selected i t plays, and when selected again it stops?

[warm torrent]

Then you'll probably need a script that keeps track of the particle system's status and toggles it with a public method, which the selector calls

[verbal onyx]

Ah okay

[verbal onyx]

My particles are showing up in scene view but not in game? While I look at scene view in game they are there but not in game

[wooden glacier]

maybe you added a layer for your particles and they are culled on your camera ?

[verbal onyx]

let me check

[verbal onyx]

Culling mode?

[wooden glacier]

I think its called culling mask but just check if all your layers to render are checked in the list

[wooden glacier]

It's a parameter of your camera 😉

below clear flags and background

culling mode of your particle means if it simulate (plays it) when its culled or not

[verbal onyx]

oh right

[wooden glacier]

When you add a layer, don't forget to add it to your camera ^^ happened to me yesterday !
If it's not that, i'll dig further tomorrow, now it's moar than bedtime here :p cheers !

[verbal onyx]

Ah its a vr camera

[mystic summit]

i need help figuring out why my particles arent detecting collision, if anyone is down for a screenshare call pls DM me 🙏 🙏 🙏

[ashen robin]

Better off just posting a screenshot here if you're looking for some help.

[mystic summit]

This is from 'Color over Lifetime' of a particle system i have.
i wanna grab the last slider and move it to the left a bit via a script, how can i call for it and how could i tell it to move on a code?
All im able to do is create new gradients with a specific value but cant seem to call and edit a preexisting one (at least idk how)
pls help! 🙏

[warm torrent]

That sounds like it could be the hardest possible way to make particles more orange
I would rather change the start color, or lerp color over lifetime between two pre-existing gradients

[mystic summit]

No I want the opacity to go down

By changing the alpha key I think it is

So it looks like the fire was put off

[warm torrent]

Same deal

[mystic summit]

Aight I'll try that thanks!

[warm torrent]

If you ultimately want the fire to seem extinguished, why not turn down the emission frequency instead

If you make it fade to alpha sooner by moving the gradient knob, it would just still look like it's burning, but more flickery

[sinful steeple]

Can anyone help me understand why that vfx is visible through the wall?

Nevermind, I forgot to change render queue

[ashen robin]

You can separate the alpha channel, and instead remake the curve for alpha over time specifically if you want to do that.

[sinful steeple]

Hm, actually this was a "fake" fix. I think the problem is that the material is transparent so no matter where the vfx are in the render queue it shows through anyway. I think this is intended behaviour but is there a way around it?

[warm torrent]

The roof doesn't look like a material that should be transparent

[sinful steeple]

when the player walks in I want it to fade to about 10% opacity and back to 100% when they walk out

[warm torrent]

Transparent surfaces, especially large ones are awful for sorting and awful for performance
There's a reason why games don't do that
If they need to fade something, they swap from an opaque material to a transparent one for the duration of the fade, so that the problems are minimal

Or rather what you see in modern games they use dithered alpha clipping for the fading rather than alpha blended transparency
Though it looks grainy it doesn't suffer from any of the issues

[sinful steeple]

right now that's what Im doing, when the player enters the trigger it swaps from an opaque to a transparent material to make the fade effect, and then swap back when the player exits. But during the time the player is there I leave it on the transparent to have that "you can barely see the ceiling" effect. But if this is a bad practice because of performance impact I'll look into other options. Thank you for the help

although Im not sure, the solutions you suggested are for the fade itself, not for the semi-transparent roof after correct?

[warm torrent]

Dithering can be used for semi-transparent visuals too, but the result will be grainy because it'll be an opaque dot pattern
TAA can be used to smooth it into a kind of a fuzzy transparency, but that requires a render pipeline that supports it and the knowledge to do it

[warm torrent]

If you're aware of the drawbacks and budget performance for it, alpha blended roof is not entirely out of the question
Since transparent objects are sorted by their object origin, you may be able to get it working as long as the roof's origin is always above the particle system's origin

[sinful steeple]

So at that point I might aswell just use the transparent material so long as the player is inside the building no? The player will only be inside one building at a time, which I would assume wouldn't be that big of deal resource wise

oh

yhea haha

[warm torrent]

The cost is overdraw, relative to each pixel that the transparent material is covering

This is why particle systems have a Max Size defined by default, as transparent materials that overlap or take a lot of screen space can get incredibly expensive

[junior thistle]

Guys, I'm a bit lost. I'm a vfx/shader noob. Where would I start trying to make a poison spit particle/shader? I'm a bit lost trying to make anything that looks remotely good. Any pushes in the right direction?

[warm torrent]

Collect references, adapt the most fitting aspects of them to your project's artstyle and technical specifications

[ashen robin]

I wouldn't worry about creating shaders beyond the given particle shader, as you can create some nice effects with what unity already gives you.

https://www.youtube.com/watch?v=-P09r-ALN38

One of the better videos from Gabriel showing how you can make something amazing looking by scribbling a few lines in photoshop, and adding a few touchups to make it look more lifelike. I suggest assembling a folder of assets that consists of simple art abstracts like flares and noise fields as having the resources already available so you can experiment as you go about creating your particles.

[junior thistle]

I have some simple effects done like gradual glowing/outlining. Really, I only need the poison spit now. I honestly don't know if I should use shader graph or vfx graph/particle system for that @ashen robin

[ashen robin]

They both can accomplish the same thing, I do enjoy the graphs more however as I find it more manageable for larger particle effects Half asleep here, thought you were comparing between the shuriken system and vfx graph. For the poison spit, if you want to try your hands at a shader, perhaps a dissolve shader with tiling is something I can imagine.

There's also flipbook textures, but I find those require much more effort. Plus you can always reuse your shaders.

[junior thistle]

hmm ok I will look into it

the video you provided seems effective enough

the key, I guess, is just drawing a good shape

• I'd want collision which is easy with the particle system so I might start there

[ashen robin]

There's a lot you can do with a single textures. Rotating it, resizing, changing the opacity and colors does make for a nice pseudo-animated effect.

But to scroll the texture, which is something I do use a lot, you will need a shader for that.

[junior thistle]

The game uses a top down view. I used rotation on my ammo pickup and you could literally not see that it was spinning so I doubt it would make a difference

I am drawing and will see what I can come up with

[warm torrent]

All three of those are very situational tools
We can only give opinions what selection of those you likely should use only if we know precisely how the effect should look like

[junior thistle]

I'm onto something but why does the particle scale inversely with the camera? It's weird

what that video made me realize is that I don't need to control the movement of the particle with the particle system...I can make it spin around with 0 velocity and use a game object to move it

nvm I figured it out

[junior oasis]

Hi! I created a particle system and added a material to it. I then changed the start color in the particle system setting, but the particles still have the same material's color.

How do I change that?

[junior thistle]

@junior oasis There should be a checkbox somewhere that says ''use material color''. Uncheck that

[junior oasis]

I can't find anywhere... Not even in the renderer or main tab

[junior thistle]

no, sorry that's for trails. Are you using the particle shader? I think that might fix it

for the material

[warm torrent]

Particle system modifies vertex color
For that to be visible in the material the shader needs to implement it, which is what the particle shaders are for

With the usual particle shaders vertex color cannot "override" the texture's color or the base color / tint applied to it, rather they'll all be multiplied together

[oblique apex]

How would I go about making a Set Position (Shape Arc Circle) face the camera?

[ashen robin]

For the vfx graph? The package comes with scripts called property binders which will allow you to pass information such as the camera position into the graph.

[dry dove]

Does anyone else have a problem where sometimes all VFX stop rendering?

Like just now I've checked out latest commit and when I open the project none of our graphs show.

[untold fractal]

Just out of curiosity, what is the support for the VFX graph looking like for android devices?

I tested some basic effects on a device of mine and it worked fine, is it only specific features of the package? Is there some kind of list of supported devices?

[devout rain]

Heyo, so ive created a smoke spawning particle system that is meant to follow a moving object. If i just move the whole vfx graph the smoke doesnt trail.
Manually changing the spawn position fixes this, but if i move too far from the origin of the system, the particles disappear.
Any solns ?

With a normal particle effect i would change the simulation space to world. Is this possible with vfx graph ?

Oh lol. I was looking for some attribute somewhere, but in the top right of each block of nodes i just needed to click on "local"

[brave trail]

Hi, how do I make a copy? How do I add component?

[ocean current]

Hi, does someone know what's wrong with this? I want the scale of the smoke to be unchanged. But when I go further away with my camera from that smoke, it gets bigger and bigger. Does someone know how to fix it?

HDRP (please ping me if you know how to fix it, thanks 😄 )

[shut cliff]

@ocean current Is it Shuriken particle system? What is the Start Size of the particles?

[ocean current]

It is only basic particle.

I am sorry but i cant go to pc right now, would be ok if i will write settings tomorrow of that particle?

[shut cliff]

just take a screenshot of the inspector

[ocean current]

Ok

[shut cliff]

try setting min particle size to 0 and max particle size to 3

what does size over lifetime look like?

[ashen robin]

I don't remember shuriken having the option for particles to be rendered relative to screen size/space. Perhaps some camera orientation I'm not aware of?

[warm torrent]

All Render Modes besides mesh have it, meant as a failsafe against overdraw

[warm torrent]

Always keep min particle size at 0 and max particle size no bigger than 1 (prefarably 0.5 which is the default) unless you know what you're doing
Start size of 1 doesn't explain why your particles are so large, but they may also be increased beyond 100% by Size over Lifetime and by Speed modules

To keep things clear I recommend that modules that control size do not increase it above 1, so you know 1 corresponds to the Start Size of the main module

[ashen robin]

Oh, huh that's pretty interesting

[warm torrent]

It's also relative to screen size (height, I think) so any values above 1 are pretty extreme, especially for alpha blended transparent particles

[prime dome]

Was wondering if someone knew if using two of the same node in VFX-Graph is using unnecessary code?

For example, if i'm using a time node, should I use that alone to route everywhere that requires it, or will it make a difference performance-wise if I just duplicate the node each time I need it.

Not sure how it deals with it under the hood, does it declare a different variable under the hood per-node? or does it all reference the same variable?

[clear spruce]

You can compare the generated codes

[junior thistle]

Hi, I came asking about a poison spit fx a few days ago. I made something

Do you think it's passable? I think it can be better but I'm a noob

also ignore the brightness, something happened with my video; it's not like that in game

[warm torrent]

The splash looks great, but is kind of overshadowed by the bright light
The projectile itself seems very tiny and hard to read to me, which could be bad if it's supposed to catch attention
I would give it a trail renderer, or some velocity stretch, and make it bigger

[ocean current]

Thanks everyone for help, its working!

[sinful light]

I also would imagine more of an organic shape that stretches with velocity over the course, like you would spit out of your mouth, it would scatter the further it travels instead of a bulb that consists itself (unless that is your intention)

[static valve]

guys I was following tut but the results havent come out the same
https://www.youtube.com/watch?v=_SaBXY-Ejqo
my video isnt working so here is the snap.
my beam dark isnt working the same way and his base vfx is yellow orange while mine is just neon orange.
also is there a way to hide the magic lamp icon in the scene view so the circular flashing is seen better.
I want to attach this too a monsters mouth like godzillas beam from the movie.

[ashen robin]

You can hide the lamp from the tab on the top right of the scene where you can turn on and off your gizmos. As for the color, perhaps you don't have post processing w/ bloom applied to your scene so you can't really get that glowy effect from the HDR gradient.

[static valve]

oh wow thanks. how do i do the bloom?

[ashen robin]

If you're using URP/HDRP you need to create a Volume asset onto your scene and enable it, the bloom, and make sure scene camera (and the editor camera) has post processing enabled.

[static valve]

aah i dont think that was covered in the video so might have to watch a setup tut before this 🤔

[ashen robin]

Yeah, he doesn't mention it much but there's more going on in his videos usually.

[static valve]

is his udemy course worth it or that also has gaps. he teaches alrigt but yeah nothing is outright total beginner

[ashen robin]

I've only watched what's on youtube, but honestly the vfx graph is very light weight and easy to get into when you spend your time experimenting.

still, there's not that many resources out there for it, so it's probably worth it if you don't want to go digging through the forums everytime you run into an issue.

[static valve]

yeah but this tut didnt mention that versions prior to 2021.3.9f1 had errors with vfx graph so that i found from a forum post after googling

Oh and how am i to time this laser with mu monsters mouth to make it look polished and believable in game?

[ashen robin]

Init a GO with the particle system at the time of attack or you can also use events to trigger it

[static valve]

got the bloom but how do i add the thrust to it like it can annihilate everything in its path. it is looking weak right now like a flimsy cooking blow torch?
and my radial flash is a little offset from the laser what attribute can i tweak to match its origin with laser?

[noble osprey]

Hi all, I have a VFXGraph particle system attached to the 'engine' of a space ship, trying to create a trail effect (trail renderer won't work for my particular use case).

Is there a way to have the particles emit and stay where they are in world space instead of moving with the actual vfxgraph object?

[ashen robin]

You can change your nodes to local or world from the top right corner. The positional values you feed it also can be tinkered with and changed to use local or world coordinates, so try experimenting with that if you want your particles to move independent of the engine.

[noble osprey]

Yeah I tried that tbh, but they just stuck to the world origin. lol. Sokay, I've gone a different route and figured it out 🙂

[ashen robin]

The engine effect itself should be local, but the particles you spawn should be in world coordinates

[noble osprey]

Yeah sokay, actually prefer what I've come up with as an alternative. lol. Will revisit at some point for other things. Thanks though 🙂

[vernal maple]

Hi guys is there any way for this particles to come out from one source ?

right now theyre just appearing randomly but I want it to come from one source

any tips ?

[analog jetty]

"Shape" in the Particle System options. It defines the spawn point.
Your photo looks like the particles come out from one source already though.

I've got a ParticleSystem setup like this. ParticleSystem.Play() plays only once.

When the function is called again then it doesn't do anything.

How can I make it emit a single burst when the function is called?

I used ParticleSystem.Emit(1), but it requires me to specify how many I want to emit. I don't want to do that in script. It's defined in the ParticleSystem inspector. :/

[jade trout]

Has anyone experience with the new hair tool, that they released on GitHub. I struggle with using curves from an alembic file as guides for instancing. I can import the alembic, but I don’t know how to use it as this custom thing (that is set to 1DSine wave by default) so that i can’t add and remove density based on the guides. Tbh I don’t even know, if that kind of instancing is possible, but it would be a really basic feature to lack I guess.

[young crane]

Hello everyone. I have an issue with how different particles interact with each other. Please have a look at attached videos - smoke and fire are fighting for priority when I move or rotate the camera. They use default URP particle shaders, their sorting priority is the same, blending modes don't change much here. Any ideas how to deal with this? Why can't they just co-exist nicely :c

[young crane]

here it is with a ship and an extra dust particles. as you can see they sort of mask a mesh?

[junior thistle]

Sorry for responding late, I wasn't on these past few days. I agree the projectile is weird but I didn't want to make it bigger cause it's supposed to come out of a zombie's mouth. It can't be bigger than his head if it comes out of his mouth. But yes, a trail renderer or stretch is what I wanted in the first place but didn't realistically know how to make look good. That's probably the right direction tho

[junior thistle]

Yea I was having trouble achieving this with the particle system. Thing is, the drawn shape is more organic, but it looked like shit as just a billboard, so this is in fact a rotating billboard. But when you rotate a billboard fast, you get a circle more or less so that's why it ended up looking like this. Maybe I'd have better results using shader graph and adding some kind of vertex deformation and emission effects

[stoic fulcrum]

can anyone give me some insights about ParticleSystemCullingMode?

not really sure when to choose PauseAndCatchup over Automatic

[ashen robin]

Have you tried a much larger density of particles? Could try some 3D fire/smoke using meshes over quads.

The bottom video seems more like a camera orientation problem though

[young crane]

I will give it a try. And how would I go about fixing camera orientation?

[ashen robin]

https://docs.unity3d.com/Packages/com.unity.visualeffectgraph@10.2/manual/Block-Orient.html

Shuriken system has similar options

[ashen robin]

Potentially a culling issue too. The problem seems to stem from the fact that the quads are relatively large and are intersecting with each other.

[warm torrent]

Automatic For looping effects, the simulation is paused when offscreen, and for one-shot effects, the simulation will continue playing.

Automatic chooses between the two options besides PauseAndCatchup so you'd favor the latter when the former isn't a practical option

So generally for a looping effect for which pausing is too obvious

Since it doesn't progress when paused

Or for a one-shot effect that's too expensive to always simulate for whatever reason

[junior thistle]

https://streamable.com/42duim

How do you guys like this one?

I played a long time with this...I tried adding longer, clearer trails but I think it goes against the realistic style of the game

[tiny sage]

simply adding these particles to my scene (with play on awake + looping on) causes them to appear, but calling it manually with code doesn't. where can i start debugging this?

    private void MovementAnimation(Vector3 moveDir)
    {
        isWalking = moveDir != Vector3.zero;

        if (isWalking)
        {
            walkingParticles.Play();
            Debug.Log("Creating Particles");
            playerAnimator.SetBool("isRunning", true);
        }
        else
        {
            walkingParticles.Stop();
            Debug.Log("Stopping Particles");
            playerAnimator.SetBool("isRunning", false);
        }
    }

[warm torrent]

I guess that calling Play() every frame starts the animation over constantly, rather than letting it play uninterrupted

[prime dome]

i have this muzzel flash and im trying to play a single particle but sometimes nothing shows up,no particle at all ,why could this happen? Those are my values:

[warm torrent]

You'll probably want to use burst emission rather than rate over time

[prime dome]

i was using it,it wasnt helping tho,the problem was related to start lifetime

[gloomy storm]

Getting warnings from VFX graph when I build the project. I'm not the best with reading these so can someone inform me what the issue is? It was working fine about a week ago before the slash VFX was introduced.

in the build, the visual effects are missing while in the editor it works fine

[prime dome]

could anyone tell me how i could create good looking crescents like this in photoshop?

[civic surge]

is it normal on default that a particle system has a 1 second delay before the particle appears when using the spritesheet?

[warm torrent]

No

[prime dome]

please someone help

[cobalt scarab]

Circle with inner glow put through vanishing vertical gradient and/or blur applied?
Explore your tools, see tutorials.

[prime dome]

theres no dedicated tutorial on how to make crescents like above sadly

all i know is that i have to use

polar coordinates

on photoshop

[cobalt scarab]

See tutorials for the tools, when you familiar with them then you get an idea how to use them

[winged grove]

Hi there! I am having a weird issue with particles systems in my game, and maybe there is someone who can help me here haha. I have some particles systems that are effects triggered on attacks and so on that work great, but I am trying to add an environmental particles spawner that starts with the game, and for some reason I seem unable to see, the particles do not render in the game view. I am using URP. The particles have nothing special, and I can see them in the editor, but in game they just do not show. I tried changing material (lit and unlit), the render layer to make sure it is rendered and I've checked online but haven't found anything useful. I will attach some pictures so you can see the issue:

This is with the game paused, you can see the particles in the editor as they should

But on the game window, same frame, it doent show them at all

And with the effects particles this doesnt happen

Am I missing something obvious? I dont know what is going on here 😅

[ashen robin]

Beyond what you've tried, I would check if any positional values are being updated when you run the game. Double check if the material and the render layer from it isn't the issue, and if you can't solve it still you have the option to use the renderer object feature to force the effect to draw last.

https://docs.unity3d.com/Packages/com.unity.render-pipelines.universal@11.0/manual/renderer-features/how-to-custom-effect-render-objects.html

[sleek tide]

does anyone know how to make a particle collision not stop the particle but still do the collision message? particle trigger won't work because it needs specific colliders ahead of time that will trigger it. even if I did build a list of colliders at runtime it doesn't seem like you can get any info on what triggered it at any time, where collision gets you the collider

so yeah, pretty much, I want a particle to not slow down on particle collision and go through things

[ashen robin]

Make a controller script for the particle system and use the gameobject you've the particle system on to handle the collision detection

You'd have to write the logic on how it moves and such as well if it's a projectile.

[sleek tide]

that's what I was considering if I can't get this to work. would make adding future things take a lot more work rather then just using the systems within the particle system for everything..

[ashen robin]

You can still use particle collision in itself for secondary particles; you'll just have more control over the destruction/collision of the actual object.

[sleek tide]

I've come up with a system where I use triggers on the main particle system and a sub emitter emits an invisible particle on trigger enter which collides

[young crane]

the density of particles is already very high. they spawn small and grow to be large. their size does not affect the rendering order. tried both orienting faces to the camera and the plane

[ashen robin]

Alright, so I went to try out some of my smoke effects and I remember I ran into a similar issue. A few things first, I believe you're using two different particle systems, so what's going to be the deciding factor on what's going to render on top is the position of the bounding box each system has. Now, you can fix this issue by putting them both onto the same vfx system, but you run into the more complicated problem: transparent layering / z-depth buffer. I've managed to fix a similar issue quite a while ago, but it was through scripts and keeping my camera at a specific angle when rotating.

Realistically how you would try to solve this is through the use of opaques and alpha clipping, preferably with your own custom shader. Keeping the smoke transparent is fine, but having the fire phase out of it, which seems like what you want, requires some tinkering. Using meshes may be a good idea for the fire to mix with the shaders if you want to go even further.

[young crane]

Thanks. The only problem I have is that Shader Graph does not allow to give me a flipbook option :c without it there is no nice transition for particles. I guess I need to go with code.

[ashen robin]

it's a flipbook? You may be fine with just alpha clipping it then.

[young crane]

I've meant flip book blending option in a shader

if you untick it fire or smoke look like shit

[ashen robin]

Oh, hmm. Haven't actually used that feature yet.

[young crane]

@ashen robin check this video out. first half has flipbook on, then I turn it off. transitions are much more fluent while its on

its especially visible at a smoke part

[ashen robin]

Oh, yeah that's some pretty neat fire. I'm just too lazy to draw every single frame lol

[young crane]

what did you mean here 'Using meshes may be a good idea for the fire to mix with the shaders if you want to go even further'?

[ashen robin]

I'm just assuming, from those previous videos, that you wanted your fire to phase through that smoke cloud nicely.

[young crane]

oh I am happy with that effect. I can make white smoke/steam particles more transparent at any point. its just this horrible flipping what renders first that is a problem.

[ashen robin]

If they aren't in the same system and they are on the same layer, then the bounding boxes from each system will be the pivot to where the camera decides what is in front and what is behind

[young crane]

i guess there is no easy way to hardcode a bounding box to a certain point instead of having it change with each frame

[ashen robin]

Like I was saying, you can put them together and it won't jump around like that, but you'll have to figure out a way to get alpha clipping to work on the flipbook, otherwise one will always render over the other.

From that last photo, it does look like it's rendering as an opaque, but I'm confused how the blending in your options says transparent

If you get it working, do let me know. I'm actually interested in seeing it solved.

[thorn plaza]

VFX designer pls help me fix this, it shows a symbol instead of the particles

I tried pressing the play button and there's no particles came out....

[fluid lagoon]

that symbol is just a gizmo

checking "show bounds" might help - make sure your bounds are sane

[thorn plaza]

I wanted to see like this particles as u see in the video, but when I inserted my VFX, no particles came out even tho I check the "Show bounds"...

[thorn plaza]

Never mind, thanks i fixed it, now it showing me this purple thingy....

[warm torrent]

Did you remove your SRP asset per chance in the meanwhile?

[thorn plaza]

uh I have no idea, I added a URP in the SRP asset in edit>project setting>Graphics>SRP setting

[warm torrent]

Right, so it likely was a lack of the asset why your vfx weren't showing up
You need to be using URP compatible shaders and materials from here on out
Full instructions in #archived-urp pinned messages

[thorn plaza]

okay thanks u

[nimble quiver]

im thinking of doing something like this in 2d how should I set my particle system to achieve this? as I only want particle on the ledt and right of the ball and none at the center of the ball

[warm torrent]

You can have a particle system with a sub-emitter, so that they form together the two particle jets
All particle systems in a hierarchy are considered sub-emitters of the parent particle system, no need to use the sub-emitter module
Then you can instantiate the particle system with a specific rotation by reading the ball's velocity, the collision impact position, or both

[nimble quiver]

So I need 2 particle system as the child of the ball instead of 1 ? like this?

[warm torrent]

A particle system's child particle systems will act together with the parent particle system by default
If they're adjacent in the hierarchy you'll have to call them separately

[misty ermine]

Hi, I am doing my first VFX for UI. I am using VFX Graph with an output Particle Line to outline this button, the idea is to go all around it and loop. How can I make this path? If I try to turn it after some time, it moves the whole line to another direction 😬

[ashen robin]

Haven't really done much with particles on the UI, but your VFX particle line can very much be stationary in the graph, allowing you to control the position from the gameobject.

Could also evaluate it inside of the graph for when the particle update node would change direction I believe.

via branch nodes

[manic egret]

question - so I am making an enemy that teleports, the effect is supposed to be a lightning bolt that strikes them, and they disappear during the impact flash - the issue is, the flash is a 2d texture, so it doesn't fully obscure the enemy, making it obvious when suddenly blip out of existence. I tried putting the flash in front of him, but it also creates a very uncanny effect when the player runs around it (I had the impact flash in front of the enemy, while the VFX would constantly rotate to face the player) - and I tried rendering it in front of 3d objects, but that made it appear in front of ALL 3d objects, so if the player is behind a wall, they would still see the enemy's teleport flash

any ideas on how to make this actually work? I think I want to keep away from using a 2d texture for the impact but I don't know what other options I have that can fix this

[warm torrent]

I think most games don't try to make that kind of effect perfect, just quick enough and the particles flashy enough that the player won't pay attention to it too much to notice it, but it depends on your art style and exact requirements if that's applicable
In these it's priceless reference to be able to look at other games that have similar effects, especially in slowed-down footage
There are some ways about it though

2D particles can use "depth fade" which means their shader compares its position to depth texture and lowers alpha the closer it is to a surface, which makes particles blend extremely smoothly with 3D geometry
Because this makes particles easily obscured by geometry, it's also common to move the verts closer to the camera in shader, or simply spawn the whole particle with offset towards the camera
This technique was used in the Enemies demo I think, though I don't recall if there was a breakdown of the effect or just a mention

If you really must guarantee a character disappears or appears convincingly, you could implement a "dissolve" effect in their shader, which makes them glow and then disappear gradually, or appear if reversed

But that's just the most common example

[sturdy oak]

Guys I have a smoke particle attached to my gun barrel
Problem is I want it to emit from the gun barrel which I parented it to
But also be world space

[delicate bobcat]

Hey all, I'm trying to make a gore explosion particle system, and I want to create blood stains where the particle hits the wall. currently, I'm using a sub emitter to create the stain with a particle system on a collision, but that causes a few issues and also doesn't work with normals, so the stain is always facing down. I am currently trying to make a script that instantiates the stain when a particle collides, but I don't know how to go about it. Here is a video of what I have right now: https://streamable.com/mta75b

[misty ermine]

Going for branches to update the position (and rotation) seems like the good way to go, my issue is to change it again after some time. I wanted to use this switch block but I can't get it to work, do you have any tips for that? 🙏

[ashen robin]

You have an attribute called target position which you can set and read from in the same system. Even then, I feel like updating it by the gameobject is much more doable if you don't want to go about it a mathy way.

There is one other way I could think of which may be easier, and that's through the very limited number of trigger events. One of which is trigger on particle death, and even then, it requires some extra work like checking and killing the particle at the position, then creating another system in the graph to spawn another.

Also beyond the topic of the vfx graph, I think what you're trying to accomplish may work just as well using shaders.

[misty ermine]

Thank you for your reply, I was using the "Get Attribute position (current)" I think it just works the same way? What do you exactly mean with updating it by the gameobject? I might get a look at how to make it with the shader graph then too if this does not work indeed

[ashen robin]

If you change the particle strip/line to world space then the line will expand as you move the gameobject itself around. It's very similar to how the line renderer component works.

[misty ermine]

I went for world space and simply animated the gameobject, it works well thank you 👍

[pallid kernel]

hi i am new to learning vfx and i was wondering how i can get rid of the black outlines around this trail

[clear spruce]

Id guess the texture you are using is gradually transitioning to transparent and getting darker at the same time when moving away from the center of the texture. By using texture thats fully white and does only change the alpha value you could be to get rid of those borders

[stuck rune]

I'm currently trying to use the particle system to output one of four random sprites from the attached spritesheet. Right now, I'm just getting magenta squares. I've tried creating a material for the particle system, but that seems to display the spritesheet with some odd errors and distortions. I know I'm missing one switch here, somewhere - any thoughts?

[ashen robin]

Looks fine to me with default settings with flipbook

[stuck rune]

...Goddamnit. Hmm.

Are you using a material?

[ashen robin]

No ^^ (using defaults)

[stuck rune]

Any chance of a screenshot of the relevant settings?

[ashen robin]

Using the shader graph

4x4 seems fine for the crop

[stuck rune]

Ah, I'm using Particle System. Really need to switch over to shader graph...!

[ashen robin]

Yeeeeah, much easier on the eyes

[stuck rune]

Aha, I think I got it...

Needed to switch rendering mode to Cutout in the material.

[naive bridge]

#archived-resources

[warm torrent]

You always need a material for particle system particles. preferably a particle shader
All the flipbook module does is display parts of the texture according to its rules

[warm torrent]

They're tools for different jobs
Particle Systems are CPU particles, and cheap to instantiate and easy to use, and you get collision events
VFX Graphs are GPU particles, very cheap to compute per particle
Shader Graph is a tool for shaders, usable with both VFX Graph and Particle System

[restive stone]

Anyone know how I can shrink the boundary of these particles?

[warm torrent]

What's a particle boundary exactly?

[restive stone]

I was hoping someone here would know. lol

I guess its like a collider but for the particle itself? im not too sure

I just know when my player goes to pick these up, they disappear (as intended) before the player actually touches them. I believe the player is touching the boundary first which then removes the particle

nevermind, I fixed it. I had to change the radius setting in the collision component on my particle System

[warm torrent]

Hard to know about something that doesn't seem to be a thing

[restive stone]

its all good, I fixed it

[brave trail]

How do I change the background?

[stuck rune]

@warm torrent , yeah, that was what I understood to be true, but I couldn't get the material to display correctly. Eventually I identified that the rendering mode needed to be set to Cutout.

[prime topaz]

um I have made a shader graph portal and it works fine in editor but in game view it is not showing emission and alpha

in editor vs game

[warm torrent]

As long as your sky is enabled in the viewport as quadro pointed out, you can define the sky material from the Lighting window

Dragging a material onto the sky in scene window is a shortcut to do that

[prime topaz]

Apparantly tone mapping is showing in editor but not in game view

Is there a fix to this ?

[ashen robin]

Enable post processing on your game camera

[prime topaz]

It is enabled

[ashen robin]

Is other PP effects working? Otherwise make sure the volume/profile isn't being disabled, or perhaps you're using another camera.

[prime topaz]

yes bloom and vignette is also working, just tonemapping is not working

I only have 1 camera in my scene

[magic river]

hey
is there any to ignore collision in particle collision ?
i know there is layer collision setting but is there any spesific collider ignore?

[spark birch]

My particles in vfx output mesh do not glow, even though I used hdr color.
I don't understand that much, I would appreciate some help.

[ashen robin]

Need to enable post processing and bloom via volume component if you're using URP

[spark birch]

Ok

Thank you so much! I've been stuck on it for a week now!

[ashen robin]

That's interesting, I'd say try out different pipeline setting assets, but if you're saying it's working in the editor then I could only assume your current settings are being changed on runtime. Try asking in #💥┃post-processing

[wanton idol]

Hi Guys! Do any of you have experience with Particle Systems scripting on Particle level on Android?
On my PC all good, debugging the Android version the size/position coordinates also look good (the same as in the same resolution on my pc), but they are rendered incorrectly.
Screenshot: A -> android version (I guess the blurriness is okay for now, but I don't know why is it like that lol), B -> PC version in the same resolution.
Those are basically two rectengles above every guy as an HP Bar - but the position and size is no quite correct on android.
Would you have any tip where could I dig further? 🙂 Cheers!
Could this be a float prcision issue?

[wanton idol]

Yeah this is my first ever Android testing, I noticed two things: it looks like on Android the particle system takes the scaling from the whole gameobject hierarchy (eventhough local scaling mode was used) and on PC it does not. And for some reason, one color (in the middle) on my HPBar texture is considered transparent, I don't know why.

[wanton idol]

Okay, that other issue was, my material had "coutout 1" - which for some reason removed the middle part of my texture.

Just leave these somments here, maybe gonna be helpful for some people ^^

[ashen wigeon]

How can I do those wind particles when the player runs?

[warm torrent]

The simplest way to do it is to have a Particle System in local space parented to the player camera that shoots particles with wind trails around the camera in its direction

Then control the emission/opacity/speed based on player speed

If you want it a bit more complex you could orient the particle system towards the player's direction of motion

[ashen wigeon]

Ok thanks!

[gritty sphinx]

Did you solve it?

[analog jetty]

It seems you are replying to my message, but it cannot be loaded, so I don't know which one you are replying to.

[hasty pond]

anyone know why my particles are appearing like this?

the material is coming up pink too

[warm torrent]

Pink means shader error or incompatibility with the render pipeline
Check what shader the material is using and make sure it's compatible

[hasty pond]

its URP/Particles/Unlit

mb for ping

[warm torrent]

It's cool! And your project is on URP?

[hasty pond]

yeah

[warm torrent]

It could also be a trail with a missing material, potentially

[hasty pond]

its applied to a particle system, i might be doing something wrong though

[gritty sphinx]

#✨┃vfx-and-particles message

Can you access this?

[analog jetty]

Yea.

I solved it.

The Emit function

I don't remember exactly how it works, because that was kinda a long time ago. It doesn't do 100% what I want I think (but I'm nor sure now).

What it does is emit 5 particles if I'm correct.

While I wanted it to use the Burst settings I have already configured.

I have set the number of particles to be 10 among other things.

But it worked for what I needed.

[gritty sphinx]

I had to call play after emit to work

Although I can't get the position, velocity and count to work yet

[brave trail]

Thanks you!

[ashen wigeon]

Would it be easy to create a VFX with low poly birds randomly moving in the sky? (just to fill the sky, I could use some vertex shader to make the "animation")

[warm torrent]

Easy if you know to
HDRP sample scene has VFX butterflies you could use as an example

[ashen wigeon]

This one?

Because I get this error when I try to open it with Unity Hub

[warm torrent]

That's not really an intended feature of the template, so you'd google the error and try the solutions if you want to use it

[stiff topaz]

You 'll find a set of textures in this Blogpost:
https://blog.unity.com/engine-platform/realistic-smoke-with-6-way-lighting-in-vfx-graph

[ashen wigeon]

Well my computer apparently can't handle even an empty scene in HDRP..

Is there a way to set a material in a VFX Graph output particle mesh?

Because I have a shader that displaces some vertices and I can't make it work with particles

Ok I found it, I needed to tick the Support VFX Graph in my shader graph

[dull ravine]

i made this thunder but i want to combine it with force fields so i tried making it in a particle system but it doesnt look good so does anything exist for vfx thats like the force field for particle system or can i transform the vfx to an particle system?

[warm torrent]

PS and VFX Graph are not compatible at all
Forces can be used inside the VFX graph, so the way to get the data from the scene to the graph would be to use Property Binders

[lofty orbit]

getting the data back out again for use in the main thread is the rub 🙂

[junior oasis]

Hello! I need to remove friction from my particles in a particle system. How can I do that? It seems like applying a physic material cannot be done.

[clear spruce]

If you need to get the data back to CPU, id suggest using the shuriken as getting data from GPU to CPU is quite slow operation and I dont know how that would work with vfx graph

[lofty orbit]

one trick is to encode things into a texture that you can output, but yea it's pricy af

the irony is that my use case calls for a very large n dimensional array that need to operate on as if it is a dynamic vector field (specifically kernel convolutions that happen very fast on GPU)

it handles things like a basic fluid simulation

the main limitation is that having rigidbodies that are floating in the fluid cannot easily be "two-way-coupled" to the fluid

you can tell the sim (cpu -> gpu) how the rigidbody affects the simulation, but getting the sim to affect the rigidbody effectively is the rub

[junior oasis]

Also, how dow I "project" a particle spawn on a collider behind it

I need to spawn many dirt particles on an irregular terrain (generated at runtime)

[warm torrent]

What exactly do you mean by on a collider "behind it"

[junior oasis]

uhm, maybe "under" it

it depends on where I want to project the particles

basically I want to spawn particles above a collider

[carmine bone]

I downloaded a vfx thinking it would be able to be used as a projectile that I could manipulate the movement of, but it shoots out in a shape causing weird interactions if I try to move it myself.

I understand that it's due largely to it having a cone shape

but I was wanting to see if I could get some help in figuring out how to make the vfx not self project so that way I could move it myself via script.

[abstract osprey]

Hi guys! How can I make this rainbow with bloom effect? I don't know how to add Bloom to a Particle...

[shut cliff]

@abstract osprey Looks like it's using the additive blend mode in the particle shader. If it's a mobile game it's likely it's not using bloom post processing

[abstract osprey]

thx for replying! Are you talking about this one on Material?

[shut cliff]

Looks like this for me in built-in

There should be a 'mobile/particles/additive' shader as well

[abstract osprey]

https://assetstore.unity.com/packages/vfx/shaders/additive-blend-mix-shader-202199 Oh, this one looks like something that is very close...

[warm torrent]

This is something different

To get the effect in your example you simply need an additively blended particle/sprite rendered on top

[warped sleet]

Hi, I saw a few threads about same problem but without responds. Is any way to check if a specific VFX is playing? I have to do some actions instant after finish of vfx efect. What is the best way?

[manic egret]

as someone just getting into the visual effects grid - does it assassinate your computer? And if so... is there anyway to not make it do that? I personally never really ran into any issues, but I intentionally don't do anything excessive with it, so I don't really know how far I can take anything or experiment. Like a tutorial I am following has 1 object making like... a trillion particles, and it's meant to be a common object (like a health orb or basic magic attack), they commented on it eating your GPU, but didn't go into any further details on alleviating that, and the video is a good few years old, so they aren't responding to comments

[manic egret]

I don't know too much, but for one it depends on how you are initializing/controlling the VFX, if it's through code then you can just have a debug message pop up, then pause the scene and check the VFX in question.

[grave meadow]

how do you add a sprite to a particle system

[warm torrent]

Particle systems don't really use "sprites"
You'd make a new material with a particle shader that uses your texture

[grave meadow]

Thanks

[noble osprey]

Hi all, I'm having a bit of an issue with an idea. I have an object that is using some procedural animation to control it's walk. I'm trying to come up with a vfx graph that will spawn particles on the surface of said object, but then move with the object (so it gives the effect as though the object is made up of the particles and I'll be hiding the mesh renderer.)

I've been playing around for a couple of days but coming up blank.

Would anyone have any ideas? I know how to 'initially' emit particles from an object, it's just getting the particles to move with the skinned mesh as it walks

[silk trellis]

I'm not sure if there's any difference with procedural animations than an animation clip on a skinned rig, but have you tried binding the transform? https://youtu.be/bIMyCKr0bFs?t=122

[slender vector]

Do you guys have any link for the sand particle tutorial? Youtube tutorials need the Asset pack 2017, but it is no longer in the store.

[noble osprey]

@silk trellis I'll take a look at that in a little while, thanks. Just need a nudge in the right direction. 🙂

[crimson plover]

Question on sub-emitters. For some reason i cannot figure out what properties to set in order to have the sub-emitters not be affected by the motion of the base emitter.

Eg; base emitter is just some floating bubbles that emit a pop sub emitter at the end of their life. The pop is supposed to be a radial effect, but if the bubbles have any sort of motion they end up as these flat lines instead

flat lines w/ motion

without motion the sub emitter starts w/ a circular effect and then drips down, which is the intended result

but yeah, if the base particles have any speed or direction they result in those flat lines instead, so not sure what the issue is or if that is just a "feature" of sub emitters

any help appreciated, thanks!

[crimson plover]

update: figured it out by changing x rotation on sub emitter shape. not sure why that was wonky, but makes sense i guess. most 2d pfx issues come down to rotations

[noble osprey]

Teehee, I know this isn't a big deal to a lot of people, but getting this to work made me giddy lol.

https://streamable.com/rrn0is

Now just need to play with Shader Graph a bit and make it look 'gooey' 😄

[kindred quarry]

hello! how can i get into vfx's? i've always struggled with em... any resources or anythin that may be able to help me? thanks in advance

[noble osprey]

Pretty decent channel for various thing VFX related

https://www.youtube.com/@GabrielAguiarProd

[midnight fiber]

vfx graph keeps crashing for me (2022.2.12), is it just URP or is it pretty crashy in general?

[warm torrent]

Crashes are not a feature of either VFX Graph or URP
You could file a bug report if it happens a lot

[tepid helm]

The answer is neither

[midnight fiber]

Yeah I've reported it, if it's pretty unheard-of I'll dig into it some more next time

[ocean gulch]

Hello :), I would like to make a geyser, but currently my geyser column stays the same size all the time. I would like it to explode at the end like a bouquet of flowers. Do you have any ideas on how to make this happen? Thank you.

[plain egret]

How do I connect the material properties to a particle system like shown here (from a VFX yt tutorial)? He connects dissolve power to the lifetime of the object and multiplies it by a curve

But I'm not using that VFX graph, but normal particle system thing

[burnt coral]

If you're using the Particle System component (aka Shuriken) you'll want to look into the Custom Vertex Streams option under the Renderer tab, which allows you to pass info into UV/TEXCOORD channels in the shader

[plain egret]

oh sweet, and the parameter names should just match?

or maybe its not working how I think it does

[burnt coral]

You don't use properties with custom vertex streams. You'd use the UV node.
TEXCOORD0 would correspond to UV0 in ShaderGraph.
Split -> B would be the z channel (or can use Swizzle node)

[plain egret]

thanks, it works

Is there also a way to model the curve in shader graph?

exponential function works

[noble osprey]

Hey all,

Would someone be able to take a look at this code and see what I'm doing wrong with my Lerp-iness please?

If I set the transform position directly (using the commented out lines) it works fine and the objects go to where they're suppose to. But when I use the Lerp (which, full disclosure, I've barely used before so is probably going to be something really obvious and silly), the objects don't move to their proper position, they stay at their 'zero' position.

https://pastebin.com/46nv8v2h

Just tried it with MoveTowards and having the same problem. Very confused. lol.

[warm torrent]

This looks like a coding question rather than a VFX question

[noble osprey]

Oh crap, sorry, I thought I was in the Coding channel. My bad.

[ashen plover]

Is there any way to set the scale of a particle system's shape through code? I tried this trail.shape.scale = Vector3.one;, but it's saying that shape can't be set because not variable.

[ashen plover]

Why is it not working to have an unlit transparent particle?

[ashen plover]

Nvm, I just had to put it on fade instead of transparent 🤔

[junior tulip]

Is there something special to do when baking texture to point cache? It doesn't seem like any height differences are baked it just becomes a flat plane. (edit) I think it doesn't bake y as height but optionally bake color to texture, which is weird to me.

[tame bay]

i have this issue with my mesh particles where the invisible mesh is overtop of other particles and textures, even its own texture. does anybody know a fix to this?

[tame bay]

its happening with all my particles im really not sure whats going on

[warm torrent]

The simplest explanation usually is that your particle textures have too much empty space around the particle graphic, do they?

[spark birch]

My particles do not light up in the game itself, although in the scene panel they do
Does anyone know how to solve this?

[warm torrent]

Make sure your game camera has "post processing" enabled

[spark birch]

thanks you!

[midnight fiber]

Are your particles writing to the zbuffer? Also you should probably enable alpha cutoff so you're not rendering so much transparency (or better yet make the mesh smaller)

[tame bay]

well yes they have a lot of empty space around the texture but that’s because i’m having it erode away

i just don’t understand why the particles behind don’t show at all

[tame bay]

i thought alpha cutoff was automatically on all new shaders?

[warm torrent]

I missed that part
Are they Particle System or VFX Graph particles?

[tame bay]

Particle System

[tame bay]

It’s also just a super simple shader graph that places a noise texture over a base texture so i don’t get why it behaves like this

[warm torrent]

Does the issue happen with the default particle material and/or shader as well? That could help narrow down the issue

[midnight fiber]

Or record a frame with renderdoc

[warm torrent]

I can reproduce this problem by forcing ZWrite on from the graph settings

Usually you shouldn't have that for transparent sprites

[snow spruce]

particles and any other transparent meshes should never write to the zbuffer, but should definitely read from it

[tame bay]

ZWrite is off, so i dont think thats the issue

[tame bay]

It is actually transparent when inspecting the material itself if thats what your asking

[warm torrent]

I mean see if the problem also appears with other shaders or materials

[tame bay]

Well it happens here with another particle except its a transparent mesh masking the other sides visible texture

im not sure if thats the same issue

[dry dove]

Does VisualEffect sometimes set itself to be disabled? I'm pooling VFX and sometimes they are coming out the pool disabled. Can't quite understand why.

I can't see anything here, but I'm not doing it. 🤷
https://github.com/Unity-Technologies/UnityCsReference/blob/243a8ca1274bc0f2f92f210528fcdc5bbc30558d/Modules/VFX/Public/ScriptBindings/VisualEffect.bindings.cs

[prime dome]

does unity have a substance designer?

[warm torrent]

"Have"? It's a separate program owned by a separate company, but there's a plugin to make the material format importable

[prime dome]

i see

what program is it

theres like 2 versions

[warm torrent]

All Substance programs use the same material format

[prime dome]

idk if its that or this

im trying to download substance painter so i can make textures

for vfx

since i heard it was easy and fast

@warm torrent

[warm torrent]

New and old logo for the same thing

[prime dome]

oh fr?

i did not know that

thanks dude

[prime dome]

so this will

help me make

the textures

i need

?

for vfx of course

[warm torrent]

You need to type longer and clearer paragraphs

[prime dome]

sorry i usually like typing in that format

anyways will downloading substance designer help me create seamless textures that i need

for the vfx that i want to create?

some examples

very broad example but

uhh idk

[warm torrent]

Substance is mostly geared for making PBR materials for lit 3D surfaces, but I assume it also works for vfx effects like particles and noises

Your examples can be done just as well in any image editor, including Gimp or Photoshop, perhaps even better than in Substance but your best option is probably the one you're most familiar with

[prime dome]

i actually have photoshop aswell but realtime vfx forums told me that substance was better

[warm torrent]

Substance is a good choice if you want to make shapes out of math functions
I'd prefer other image editors if you want to generate shapes with filters or draw them

[prime dome]

heres some other examples

of what textures i would like to create

[prime dome]

but i doubt i would be able to create these in photoshop sadly

especially considering theres no decent tutorials on them

so thats why i thought about getting substance painter

[warm torrent]

All of these examples can be created perfectly fine in Photoshop
These look like simply just drawn shapes with gaussian blur and m otion blur filters applied

[prime dome]

wait really?

i tried creating something similar

but it didnt really turn out well

😅

[prime dome]

no way

😭

yoo thats amazing

that makes sense

but how would i go about making more things like this?

this really makes no sense to me

its like someone smushed a buncha stuff together

and it worked

[warm torrent]

We have a thread for this

[prime dome]

yeah i probably should have told him about it 😅

[dark kestrel]

Is there any way on the CPU/C# side to get the approximate positions of particles in a live VFX graph?

Trying to calc approximate collisions from projectiles rendered in VFX

[warm torrent]

Not really and it wouldn't be practical or performant
If you need particle collisions you should use the Particle System

[drifting jacinth]

beginner at using photoshop. Imported a simple texture as PNG without background in unity but it looks like this in unity

[fast scroll]

why is the color not working

[noble osprey]

Do you have a material applied to the particles?

@drifting jacinth You need to change the import options of the image to 'see' the transparent background.

@drifting jacinth also you need to make sure you 'export' the image from photoshop and not save it. Dunno if there's a way to do it tbh, but just saving it doesn't save the alpha channel.

[warm torrent]

You need to use a shader that supports vertex color

If you're using HDRP the project by default doesn't contain any particle shaders iirc

But they can be imported from ...somewhere

https://docs.unity3d.com/Packages/com.unity.render-pipelines.high-definition@12.1/manual/HDRP-Sample-Content.html here

or here

[midnight fiber]

How do I know if a visual effect has finished playing so it can be destroyed? Assuming a one-shot effect

I'm currently doing this:

                var list = new List<string>();
                effect.GetSpawnSystemNames(list);
                var spawnState = effect.GetSpawnSystemInfo(list[0]);

but spawnState.playing is always false so they immediately get destroyed

[dusty kraken]

Hey all, I'm using the particle system and would like each particle to be a different starting colour. However, when I change the render mode to "mesh" and make my particles little cubes I can no longer change their colour and have lighting affect them at the same time. How can I use a URP lit material and also have a different colour per pixel? Would a shader fix this and if so how do I generate per-particle colour randomness?

[fast scroll]

alr thx

[royal verge]

i cannot find the alpha value slider on the color of the trailrenderer even though i see it mentioned everywhere...i may be blind but it is my first time using trailrenderers so can someone help locate it

[warm torrent]

They're the white notches above the gradient

[royal verge]

ohhhh

thank you

that was quite silly

[rigid island]

I have some visual effects that restart/start upon becoming visible to the camera, even though they should be finished.

anyone know how to fix this?

[tame bay]

https://www.reddit.com/r/Unity3D/comments/12cr3uk/issue_with_transparent_objectssprites_hiding/?utm_source=share&utm_medium=ios_app&utm_name=ioscss&utm_content=2&utm_term=1

If anybody has any solutions here it would be much appreciated, i’ve tried lots of solutions

[prime dome]

i posted in the wrong place last time

[zenith grove]

Does anybody know what can I use in Visual Effect Graph to create orbiting effect? I have a single particle that wanders around using turbulence block and I want to create 2 particles using GPU trigger and make them orbit around this main particle. I am using Unity 2021.3.19f1

[slate lily]

I have a large array of textures in c# and want to get this data over to vfx graph (1 texture per particle)

What would be the best to do this?

Graphics buffers don't support textures, texture2DArray sounds like it can work but doesnt because it samples for color
Generating a 'flipbook' texture sounds like it could work, but that will run into limits quite quickly probably

[warm torrent]

Either channel is appropriate
That's not something you can do by default
However there's a technique to create any gameobject on particle positions, used here to attach 2D lights to particles
https://forum.unity.com/threads/lwrp-using-2d-lights-in-a-particle-system-emitter.718847/
(Or would be if the forums were online, I'm getting an error)

[prime dome]

I am also getting an error

also, that link says LWRP, what about URP, same process?

[prime dome]

i've also wanted to attach 2D lights to particles how did you know

https://cdn.discordapp.com/emojis/864308856087511102.webp?size=48&quality=lossless

[warm torrent]

Anyway since particles aren't sprites, you'll probably need to attach separate GO's with shadow casters to them

[prime dome]

aw i see

via script i suppose?

i feel like i could do that

[halcyon kettle]

hey! I'm trying to set up a simple vfx graph so that there are 2 particles spawned, with a delay between, and the first particle is bigger than the second.
Frustratingly, it seems that each single burst resets the spawn index? So this current setup doesn't work, however if I set the first burst count to 2, it does, but then I can't set a delay in between.

So my question is, can I get a spawn index that includes all single bursts?
Or, is there a way to delay particles in a single burst?

[warm torrent]

Now that the forums work, this is the script provided within

[drifting jacinth]

collision in particle system checked. There is a Box collider attached on the plane as well but particles are not colliding with the ground. bounce value is 1 so they should collide and bounce a bit

[slate lily]

What is the collision mode set to?

[drifting jacinth]

3D

[slate lily]

I'd say start with a default system and enable collision. If it doesn't work the collider might be setup improperly.
If it does, compare settings

[drifting jacinth]

I can see the colliders though

[jaunty tapir]

When using Visual Effects, is it possible to change the color ONLY for particles that are yet to spawn? Whenever I change the color, the color of the already emitted particles are changing as well

[warm torrent]

One possible cause is that the colliders are moving too quick relative to their small size, so they clip through the collider before collision is registered
This happens because particle colliders are limited to "discrete" collision detection which doesn't track their path, only position
You could try to check if that's the problem by increasing their size and/or slowing their speed
Also, I believe collision against "planes" works better because planes (in this context) are infinitely thick, unlike "world" colliders

[stiff topaz]

So the "spawn index" is the index of the particles born in this frame. So this will change from one frame to another one.
The "particleID" attribute is constant and can be used for what you're looking for.
I'm taking the particleID, that keep increasing for every born particles, and use a "Modulo" operator. ID % 2, will always give 0 or 1.
I can then use this value to lerp between Size and or to have "First" particle bigger or whatever.

For the delay between particles, there are several ways.
I guess the easiest solution is to use a "Single burst" and set your "Loop Duration" and/or Loop Count.
By selecting the Init Context, you'll find options in the Inspector for Loop Duration and Loop Count.
If you set the Loop Duration to 1.0, your Single Burst Block, will spawn a particle every one second infinitely. And with what I described earlier, you should be able to get the behavior you're looking for.
If you just need 2 particles. You can set your Loop count to 2. This way, your system will do 2 loops where it will burst 1 particle with a delay of 1.
In this case, you don't even need the Modulo operation, as you know, that particleID would only be 0 and 1.

Another way is to use the periodic burst...

Hope this is helpful.

[stiff topaz]

I believe that I already responded to you on the Forum, but if it can be helpful for people in this discord server...
The way to do it would be to set the "color" attribute in the "initialize Context".
This way you're setting the color when the particle are "born", in their "init" stage", and if you don't change it afterward in the "update" or "Output" context, they will keep
the color.

[stiff topaz]

Hello 🙂 .
One texture per particles ? How many particles are we talking about? And what is the Size of those textures ?
Could you tell me a little bit more about what you're trying to achieve ?

[slate lily]

Textures can be added via a database, so possibly thausands or more.
It's a visualization for a client, from which I don't have all the info yet

[jaunty tapir]

Hey! Yeah you did 🙂 Yet to try it out, but will thank you on the forums as well. Instead of a Color, I plan to use a gradient (Color over life). Would this still work?

[stiff topaz]

Textures can be added via a database so

[bold kindle]

Hi! I'm trying to work out why one person in our team can see the Voronoi attributes in "Output particle mesh", whereas when I try to add a "Output particle mesh" I am presented with something entirely different? Not too experienced around this so any help is so appreciated!

We're using PlasticSCM for version control hence the difference, but so confused how its ended up so different when neither of us have touched this 😅

(Noticed that the output particle mesh in the second image is set to world, changing it to local doesnt make any difference)

[stiff topaz]

What version of Unity are you using and what SRP version are you using ?
By looking at the two Particle Mesh Output, I would say that one might be using a shaderGraph with exposed properties while, by default, the output context is not using a shaderGraph.
In recent version of unity the ShaderGraph option is directly visible in the output but maybe, this option is in the Inspector in older version?
When you select the Output Particle Mesh context, can you see an option related to ShaderGraph ?

[bold kindle]

Using 2020.3.34f1 and using URP. I'm suspecting that the other user has maybe downloaded something made on an older version that isn't compatible with the version I'm on then? I can't see anything related to shader graph like you have there in that screenshot.

It's just so strange that on his PC the effect works as intended but on mine it is broken. And he has a completely different set of attributes, like shown in my two screenshots

[halcyon kettle]

Amazing! Thank you so much for this in-depth reply 🙏🏻

[dry dove]

How can I disable shadow casting in a VFX graph?

[dry dove]

All good, found it. It was a choice within the shader, not the VFX graph. :-)

[dusty flicker]

How do i make a particle system make all of the particles in one short burst?

[naive spruce]

Hey all, I'm a newbie and got an issue and don't really find the issue.. Tried it now for almost 2h and don't get it to run.
So I created a waterfall shader (URP) with an tutorial and a mesh in blender --> fbx unity. Basically everything is fine, but in Blender the shape is pretty smoth and in Unity, when adding the Material of the created shader, you can see every single face on the mesh.

(I‘m using the particle system for that)

Anyone knows what the issue could be? 🙂
Thanks!

[warm torrent]

If this happens specifically when you assign a material with a texture, that suggests your UV unwrap is wrong

That often happens with "lightmap pack" UV unwrap

[naive spruce]

ok that's what I've done, then I will play with it arround a bit more :p

[warm torrent]

"Lightmap pack" lines up every quad of the mesh in random order with no continuity between them, it's bad for lightmaps and awful for anything else
In most cases you want the simple "Unwrap" operation with the help of Seams when needed

[naive spruce]

much better now 🙂

[spiral moth]

I've had an issue since moving up to a newer Unity version my vfx graph particles no longer spawn at the positions i'm feeding in via custom nativearray.. Instead they are all spawning at the root graph object position. Just thought i'd ask if there's something obvious changed before i dive into trying to figure it out..

[spiral moth]

It does seem to have disconnected outputs on my buffer sampling subgraph operator but even after reconnecting it's still spawning particles at 0,0,0 and ignoring the positions being fed in via the buffer. I guess something has changed inbetween versions of the package.

For reference i've moved up Unity versions 2 or 3 times recently ( in line with ECS changes ) from 2022.2.1f1 to 2022.2.12 and more recently 2022.2.3... I'm pretty sure this was working okay back in 2022.2.1f1.. Will need to look at package versions and changelog etc.

[stiff topaz]

If I remember correctly, Space Handling might have been updated. Try to verify your Exposed Properties "Space" and system "Space" to see if it all make sense...
Might be something else, but this is what come to my mind...

[spiral moth]

Thanks I'll have a play around with that!

[potent valve]

I have a particle system that launched 4 magic bolts. I'd also like to add some kind of "magical trail" behind those moving magic bolts. What is the best practise to do that? I can't add a particle system to a spawned particle can I? Like a "child-particle-system" so to say?

Ah ok SubEmitters is the keyword

[hollow scroll]

I'm trying to start a burst in my particles, but I can't see it. In the preview, the burst is occuring, so what's the issue? This is the code:

private IEnumerator MovePlatform(GameObject platform,int journeys)
    {
        GameObject particles = platform.transform.Find("Particle System").gameObject;
        particles.SetActive(true);
        yield return new WaitForSeconds(1);

        platform.GetComponent<MovingPlatform>().journeys += journeys;
        particles.SetActive(false);
    }

    private IEnumerator ActivateJumpPad(GameObject jumpPad, int uses)
    {
        GameObject particles = jumpPad.transform.Find("Particle System").gameObject;
        particles.SetActive(true);
        yield return new WaitForSeconds(1);

        jumpPad.GetComponent<JumpPad>().uses += uses;
        particles.SetActive(false);
    }```

[marble karma]

(i think this could be considered VFX idk) i did a shadergraph implementation of this weird and awesome GLSL shader: https://twitter.com/MisterCroww/status/1644839713839149066?s=20 link in the twit

Felipe Mendez (@MisterCroww)

I did a shader graph implementation for #unity3d of the organic fractal shader by @TheMirzaBeig and @zozuar :)
Link of the unitypackage with the whole thing(including individual files): https://t.co/c337sc5TYp

#organicfractal #shadergraph #VFX

Twitter · Apr 8, 2023, 11:08 PM

[fluid lagoon]

why not use Emit?

https://docs.unity3d.com/ScriptReference/ParticleSystem.Emit.html

[mystic vigil]

I am trying to make a particle for the first time now with unity but it seems that it turns out looking very boxy, am I suppose to create a transparant background for the sprites for it to look decent, or is there another way around?

I really don't want to go over every frame 1 by one and remove the background 😩

[clear spruce]

I mean what are you expecting? If your texture is fully opaque, GPU will obviously draw it fully opaque. If you are familiar with shaders, you should be able to make the texture be blended transparent towards the edges without modifying the textures but nothing will happen automatically

[mystic vigil]

I used to do particles in unreal engine a few years ago, i am pretty new to unity, so there is a way thank kyou 🙂

[mystic vigil]

do you have any keywords I can use to search my issue through google so I can find a guide just in case?

[clear spruce]

Shaders in general, or just manually edit the textures as mentioned

[mystic vigil]

I am looking in unity now for how to do it and have no idea how to implement it, I guess ill try to google it

[clear spruce]

Btw is this vfx graph or shuriken?

[mystic vigil]

it an animation grid sprite I made so I can create a fire particle affect when ever there is movement

just starting it, but it appears so boxy so I am trying to solve it first

[warm torrent]

Sounds like you're looking for the transparency settings of the particle shader, but it looks like your texture isn't designed to avoid the edges of the geometry even with transparency

[mystic vigil]

you mean it doesn't loop well?

[mystic vigil]

is that it?, if it is it doesnt seem to cchange anything

[warm torrent]

Transparency lets you use alpha blending, if your texture has alpha channel data
Additive transparency blending works without an alpha channel by the color channel brightness

It may help to explain what feature from Unreal you are missing exactly

[mystic vigil]

ohhhhh it works, thank you haha ^^

You're right I did a Horrible just at avoiding the edges, i'll fix it ♥

[craggy haven]

Anyone know how I can rotate a particle subemitter based on its collision normal?

[inland tusk]

Hi, is there a way to use a list of gameobjects as spawn positions in VFX graph?

or to for example randomly select between 3 transform properties per particle

[inland tusk]

Figured it out after asking as always, using a bunch of property binder vector3s into a switch with a random number gen

[warm torrent]

As far as I understand it's difficult to set where subemitters will be created beyond what the subemitter module gives you as option
It may be best to instantiate the subemitters entirely separately, with collision normal information from "send collision messages" of the collision module

[craggy haven]

I ended up going with this route and it worked just fine. I think I'll pool the particles so I don't have to instantiate over and over. it'll save a bit of performance

[prime dome]

can anyone tell me how to rotate a particle effect ?

[warm torrent]

Depends how mean it
You could rotate the gameobject, or add orientation to the Shape module, or add "radial" velocity from Velocity over Lifetime

[rugged mural]

Having a weird issue in my particle system where the Auto Random Seed box keeps getting unchecked randomly when I start my particle system.

[warm torrent]

The dark blue background might imply that an Animator is overriding the property iirc

[rugged mural]

Not using Animator for that particle system, though I have it on a Unity timeline and using Activation Track or Control track.

[warm torrent]

Probably Timeline then
Almost the same thing

[dry dove]

Does anyone know how to stop the issue where VFX don't work randomly, especially after reimporting?

It's causing massive problems and slowdowns for development.

I was hoping the new version of the package would have a fix, but no. I can't even work out how to reliably fix it in bulk when it happens (short of opening each VFX asset graph editor)

[autumn island]

question why does my particleSystem not shot up in the editor but it works fine in game/ scene

[dusty willow]

is it possible for the vfx graph particle systems to emit light?

[stiff topaz]

Not at the moment. You can use Output events and or Event Binder to spawn light with some C# . This is really powerful when you just need to spawn one light when a VFX Graph is triggered (ex: for an Explosion) .
If you want "Multiple Lights" (ex: 1 Light per Particle) and if you don't need Shadow casting, usually faking the lights is a better option. You can do some Shader trick an get nice Fake light with only Billboard quad. Take a look at this example:
https://twitter.com/klemen_lozar/status/1033409819116359681?s=20

If you need more infos, help about of of those solution don't hesitate to ask 🙂

Klemen (@klemen_lozar)

Dynamic lights are expensive, using sprites with a modulate blend material you can multiply screen colors behind the sprite and use depth masking to fake a light radius, cheap and can work surprisingly well. #screenshotsaturday #UE4 #gamedev #indiedev

Likes

2204

Retweets

424

▶ Play video

Twitter · Aug 25, 2018, 5:44 PM

[dusty willow]

hmm, I want to make a flamethrower effect and figured that it would be kind of a no-brainer for it to cast light, I dont know if any of these solutions will work well enough

I think it would be best to stick with the Particle System component for this use case

[bold kelp]

Hi, how do I make a sprite that has a 3D start size to not grow with the distance of the camera

[dull obsidian]

for now yeah, if you really need there are workarounds to read the particle data from vfx graph back to the cpu but it has performance drawbacks and not a great workflow. there are a few cards on the unity vfx graph roadmap you can send feedback to help prioritize improving this as an official feature

another way is to use a combination of built in particlesystem for primary simulation and particle lights then feed those positions into vfx graph for fancier rendering and or sub emitter / sub spawning of more particles that start from the parent particle positions

[dusty willow]

I found a way to kinda "fake" the lighting. Deep Rock Galactic inspired me, because if you look closely when you fire the flamethrower in that game the flames do not give light but rather your character/shooting point does

So i can just use events to toggle the light

[dull obsidian]

ah okay yeah that's basically what @stiff topaz was suggesting

you could even have a virtual pole or line or curve with a few lights along its length that point in the direction that the flamethrower is aimed

[dusty willow]

I think the light toggle will suffice for now

I actually tried to remake this in the normal particle system but it was kinda tanking the framerate with lots of particles

[dull obsidian]

yeah every particle as a light gets really expensive. just a handful of local lights, 3 or 5 or less at a time will keep it in check depending on hardware

deferred render path or forward+ (tiled) render path can help with this also

@dusty willow adding a bit of a bloom post process can also give a nice impression of emissive light

you may already know

[dusty willow]

Huh, I noticed a weird thing: If I shoot my flamethrower and walk to the left, right or back then it is fine, but if I walk forward (essentially making the particles go into my player character) then the game really tanks the framerate (drops from 55-60 fps to 20)

[potent valve]

I just downloaded Unity Particle Pack. Tested it and the materials had issues. I just read that it's compatible with Built-In Render Pipeline. I always thought the Built-In pipeline is always "available". So I can't use the Particle Pack with URP. Is there a pack made for URP?

[slate lily]

Does anyone know if it's possible to spawn 1 particle via script in vfx graph?

[inland tusk]

Is there such a thing as subframe emission in VFX Graph? I am trying to create a trail behind a fast moving object, and as it's not sampling the position between frames to create new particles it isn't spawning in enough positions to create a line, just a line of dots...

[dull obsidian]

strange. what render pipeline and render path are you using?

[torpid snow]

Im asking a quick suggestion

what'd be the best optimised technique to render 'rain' on a huge world in multiplayer game in mobile?

[ashen robin]

Mobile eh? Could try to just use a particle system without enabling any collision perhaps

[dull obsidian]

yes vfx graph has a c# scripting api for spawner events

[slate lily]

Ah I'll look into it, thanks!
Now I just enable and disable the spawning bool haha

[dull obsidian]

https://docs.unity3d.com/Packages/com.unity.visualeffectgraph@16.0/manual/ComponentAPI.html

[dull obsidian]

to answer your first question: not yet. sub frame spawning is "planned" on the roadmap: https://portal.productboard.com/unity/1-unity-platform-rendering-visual-effects/tabs/9-visual-effect-graph

[dull obsidian]

however, to try and address the situation --you can at least use particle strips to get a continuous trail. though it may be a bit jagged in some cases with fast movement it will at least be connected with no gaps. in vfx graph add the example "head and trails" system to see an example of particle strips

[rotund sedge]

Hey so I'm making a particle effect based on the effect from elden ring called founding of raining stars I believe. And I'm wondering what I could add to make it look better before I sell it?
https://gyazo.com/34b64cc6b7d09169fe64f7343c788b30

https://gyazo.com/c3d000c850a9d925fb8c63fccec79922

Any recommendations? Mind you I'm stuck to render pipelines so no fancy vfx graph available x.x unless there's a free shader for it I can attach to this

[dusty willow]

nvm I just spawned too many particles

But I have a question: I'm trying to make a flamethrower effect that is more realistic in its behaviour (starts out thin, almost white/light purple and then spreads out into actual flames) and I've been stuck. I think Deep Rock Galactic actually did the flamethrower amazingly but I have no idea how to remake something similar in Unity...

https://www.youtube.com/watch?v=H65xkxttGEY you can see him using it in the first few seconds

[warm torrent]

You can use size over lifetime and color over lifetime to change those properties over lifetime

The example has a separate flame puff effect spawned as the "damage projectiles" where the spray hits something

[dusty willow]

The thing that gives me the most problems is making it look (i dont know how to exactly describe this)... consistent? I don't want for the separate particles to be that visible, it should be more like a single stream (at least at the start). I either spawn lots of particles (which can lead to performance issues) or the particles are so small you can see gaps in the stream :/

[cosmic lake]

Is it possible to combine the activation time of a Particle System and Visual Effect Graph?

[gray ravine]

why do my particles stop emitting when I change the clip threshold to be anything other than 0?

oh, i thought it would condense the amount of particles being emitted into that area, not simply not emit a particle if it wasn't going to be in that area. I needed to up the emission count to 120. That doesn't seem like the behavior it should have.

[warm torrent]

It's spatially consistent, and probably cheaper to do it that way
It'd be nice to have the other option for sure

[gray ravine]

yea thanks. But now.... my particles emit differently in play mode than in the editor!? In the editor at 120 it looks fine, but in play mode I need about 200 for it to look similarly.

[warm torrent]

@gray ravine If you want the emission to be condensed into the shape, you could make a mesh in the shape of your texture instead

And use Shape: Mesh instead with Type: Triangle

[gray ravine]

having it this way is fine... if the particles would emit like they do in the editor...

[latent lynx]

How could I add a "drag" to a particle effect? Its a particle effect attached to a gameobject and id like to have a drag when the object moves if its possible?

[plush delta]

#💻┃code-beginner is probably your best bet

Delete your other posts first though

[gray ravine]

This is what I mean that the particle system doesn't emit the same between edit and play mode. wtf!?

[rare sand]

done thx

[gray ravine]

also wtf. Is my project just bugged? I did other particles and they were fine.
Using bursts, on a 7 repeating burst:

on a 5 repeating burst:

2 more per burst shouldn't make that much of a difference

[tiny patrol]

why are particles only spawning over here

none spawn on the othersides

they spawn exclusively in that line

[tepid helm]

What hapens when you turn off noise

[wet bison]

im trying to fit a particle system fora projectile from a asset i got soem time ago

but it kinda dont work as i expected

idk why the object dont stay in the same position as the project

projectile

[warm torrent]

I'd first confirm that the particle effect is parented to the projectile gameobject, has no additional components and is in Local simulation space

[unkempt peak]

hello

so I made a cool effect in blender and I am wondering how would I go about importing it in unity

it's animated

but idrk how to import it

[warm torrent]

Blender shaders are not compatible with Unity shaders
If the material cannot be baked to a texture or an image sequence, you'd instead reproduce it with Unity's shaders

[unkempt peak]

oh ok

I converted it in this

this is now geomtery

also animated

would this be able to go inside unity???

cuz I'm feeling pure desperation rn

[warm torrent]

Eh, not easily
I think only the alembic file format supports geometry animation

You can use Shader Graph to make shaders pretty much exactly the the same way you can make them in Blender, provided your render pipeline / editor version supports it

[unkempt peak]

I was hoping that I didn't have to use unity for it given that I don't even know where's the shader graph

like I'm super new at unity but I've been using blender for over 3 years so I'm familiar with it

as for the pipeline I think I'm using URP

@warm torrent anyways thank you very much for the help I'll go ahead and look it up and see how to do it properly

[warm torrent]

URP has Shader Graph by default
All you need to do is create a new Shader Graph asset and open it

[unkempt peak]

thanks

[wet bison]

found it, needed to be in local render mode

[viral marsh]

Hi, I would like to make a vfx graph that takes in 2 text mesh pro texts(or sprites(alpha values), I don't mind having to export text renders and import them as pngs or whatever), creates lots of particles on top of them, adds an explosion force(or just an offset call it whatever you'd like) and finally moves them to fill second text's alpha mask.
Is this possible and if yes, which nodes am I supposed to use because I've been trying for the past few hours w youtube, googling and chat gpt and all my attempts were unsuccessful.
Here is what it should look like+add merging to another text at the end:
https://www.youtube.com/watch?v=Op6kgayifzU&t=11s

I don't need the exact particle movement from the vid or anything like that, just a way to spawn them in the shape of a text and then move them to the shape of the other text.

If you are able to help, please @ me.

[unkempt peak]

so this is pretty cool but is there any way to add more destortion on it, cuz the noises included in this shader graph are limited

[opal star]

https://youtu.be/VZXvf1mQc9s Ive used the approach before to do particle text in vfx graph

[viral marsh]

I've just watched that video, problem is that it uses point cache which can't be accepted as a parameter in the inspector meaning I'd need a new graph for every transition I want.

[opal star]

Ah I didnt get that was a requirement. Well we have done something similar but for 3D objects. You will have to use the Set position from map node and bake your data into a texture. For text I suppose you can render out a high res black and white version of it. Sample that, for every pixel that is white, write its x y index remapped to r and g values in a new texture and use that as your position map

[viral marsh]

I don't mind creating images of that text in photoshop and using it instead.
The problem is that even if I use the unbaked texture it doesn't work because it doesn't have those properties that the point cache has(count, position and color)

I've tried plugging in the texture into the color and position from map nodes and setting the particle count to 200x200(size of my image) and it just didn't work, everything was spawned at 0,0

[opal star]

Thats why I explained that you need to bake the data into another texture, the count in that case would be the total pixel count of the baked texture

[viral marsh]

I've tried to follow what you suggested but I am really struggling, would you mind helping me with this?

[viral marsh]

I've tried a lot more things since yesterday but since none of them worked here is a thread with all the info I currently have, any help would be appreciated.