✨┃vfx-and-particles

[little barn]

Silly me. Found the issue. My fog of war was on Default layer and it was affected by the lights as well.

[trail vine]

I'm trying to create a lightning flash effect using an HDR color property on a material to control intensity. However, my code keeps resetting the intensity to 0.
Any ideas on why the intensity keeps resetting?

public class LightningFlashEffect : MonoBehaviour
{
private const float FLASH_IN_DURATION = 0.05f;
private const float FLASH_HOLD_DURATION = 0.05f;
private const float FLASH_OUT_DURATION = 0.5f;

    [SerializeField] private Material _flashMaterial;

    private void Start()
    {
        // Ensure the flash starts invisible.
        _flashMaterial.SetColor("_Color", new Color(1f, 1f, 1f, 0f));
    }

    private void Update()
    {
        if (Input.GetKeyDown(KeyCode.Space)) TriggerFlash();
    }

    public void TriggerFlash()
    {
        if (_flashMaterial == null) return;

        // Reset to fully transparent
        _flashMaterial.SetColor("_Color", new Color(1f, 1f, 1f, 0f));

        // Sequence: Fade in -> Hold -> Fade out
        Sequence flashSequence = DOTween.Sequence();
        flashSequence
            .Append(DOTween.To(() => _flashMaterial.GetColor("_Color"), color => _flashMaterial.SetColor("_Color", color), new Color(1f, 1f, 1f, 1f), FLASH_IN_DURATION))
            .AppendInterval(FLASH_HOLD_DURATION)
            .Append(DOTween.To(() => _flashMaterial.GetColor("_Color"), color => _flashMaterial.SetColor("_Color", color), new Color(1f, 1f, 1f, 0f), FLASH_OUT_DURATION));
    }
}

[restive kelp]

Can anyone help me on making the particles rotation the direction its going??

I need the help and would really appericate it

[restive kelp]

Never mind

I’ve figured it out

[molten cliff]

need help having difficulties almost there but not quite trying to keep them from moving

[whole prism]

hi guys

anyone awake??

I have problem

How do I get rid of the decals appearing on top of player(dice) object

[whole prism]

btw its urp

[burnt coral]

https://docs.unity3d.com/6000.0/Documentation/Manual/urp/features/rendering-layers-decals.html

[whole prism]

Thank you just as you message I found it also ahahaha anyways appreciate your immediate help

[whole prism]

I dont get it I guess its limited to Decals Renderer Feature, my case is the decals (Output particle forward decals) from vfx graph

[whole prism]

Update:
Unfortunately, I don't get any information about urp vfx decal layering. So rather I choose decal projector for now. I hope the vfx team come up with the solution.

[rocky mountain]

WHY this happened

do u know how do i fix it?? like rly i dont know why it missing some faces bc in blender UV map and normal view they are all

[warm torrent]

#🔀┃art-asset-workflow has a pinned message about inverted UVs

[rocky mountain]

i did it with other way, but it works, and yeah i loss my mind with it

[wet ravine]

why billboard is braking apart?

[warm torrent]

What are we looking at exactly?

The problem looks to be z fighting but there's no relevant information to be seen about the components in use

[wet ravine]

Two billboards on each another

In particle system

[wet ravine]

How to fix that

[warm torrent]

In the same particle system?

[wet ravine]

Nope

There are two

Each has billboard

[warm torrent]

They are overlapping so they are z fighting, same happens with any kind of geometry

Particles in a particle system can control their sorting depth relative to each other, but not between different systems

You might need to change the render queue for one of them, or keep one of them always a bit in front of the other towards the camera with a script

I prefer to use custom particle shaders that can add offset to the material's vertices towards the camera for situations like these

[fading hollow]

Im trying to get an attribute "HitPosition" and its setting the particles position to 0,0,0.
The script is super simple

using UnityEngine;
using UnityEngine.VFX;

public class VFXHandler : MonoBehaviour
{
    private VisualEffect vfx;

    void Start()
    {
        vfx = GetComponent<VisualEffect>();
    }

    public void SpawnParticle(Vector3 hitPos, int materialID)
    {
        if (vfx != null)
        {
            Debug.Log("Attempting to spawn VFX at: "+hitPos);
            // Create event attribute
            VFXEventAttribute eventAttr = vfx.CreateVFXEventAttribute();

            // Send position and material ID
            eventAttr.SetVector3("HitPosition", hitPos);
            eventAttr.SetInt("MaterialID", materialID);

            // Send the event with data
            vfx.SendEvent("OnShrapnelHit", eventAttr);
        }
    }
}

And the debug print debugs the correct location
Also the particle position is entirely in worldspace which is fine

I wanted to ask if anyone knows what the issue is, i must have overlooked something

[stiff topaz]

You are getting the "HitPosition" value from the Spawn Context. So you should set your "Get Hit Position" Node location setting to "Source".

[fading hollow]

when i do that, the particles dont appear at all, not at 0,0,0 or where my projectiles hit, perhaps its a math issue then

i suppose there is no real way to debug from VFX graph

Nvm, the particles alone were extremely low visibility, my bad 😭

thank you alot!

[stiff topaz]

No prob. Don't forget that "Source attributes" coming either from spawn Context or Parent Systems(Gpu event) can only be retrieve in the Initialize Context. So you need to retrieve in the init context and store them if needed.

[fading hollow]

Noted! thanks! I doubt ill be doing that with my system tho, i only need to spawn stuff using the sendevent atm

my thingy only spawns like 6 or 5 particles, even tho theres hundreds of projectile hits
is there a limit to how many "Single Burst" i can execute at a time?

[stiff topaz]

Well. It depends. The limit by using a burst block thought event is that you can only have one "Burst" per frame. If your VFX will handle the HitVFX of several weapon you can get in situation where you might need/want several "HitVFX" in the same frame

But your not limited in the number of particles per frame .

If you need more than "One event" per frame

then you'll need to use what can be called Direct Link which allow to direclty set the SpawnCount

I can found you a dedicated forum post related if needed

[fading hollow]

that would be really appreciated! thanks!

so if i call OnShrapnelHit per hit, then that is not optimal when i have like a gazillion of them
Another fix i can see is just adding all of the hits to a query and calling a hit per frame, but then that would also cause some delay between impacts

[stiff topaz]

Yes, queuing the Event is also a solution that can works. In the end it really depends on your use case-> Number Of simultanous Firing Weapon, and Fire rate.

But here is the lentghy thread related to Direct Link if you need more that one Event per Frame:
https://discussions.unity.com/t/new-feature-direct-link/847493

Also, on a side note, the VFX instancing feature has been greatly optimized and is now compaible with GpuEvent. It allow To batch instances together that use the same VFX asset.

This often allow you to use a more traditionnal "pool system" of VFX instances and is far easier to author for VFX Artist.

ON top of that, as each HitVFX is a separate instance, the bounding boxe can be properly adjusted so that you're abel to do some camera culling

and it can also be interesting for Per Instance sorting as, they 'll use the Bouding boxe center

Again it depend on your use case, and targeted platform. As you'll have a small overhead of having mulitple instances.

[fading hollow]

okay i think i got it!
Ill do

1. Store hits and all related info that happen in the same frame
2. Do my version of this c m_EventAttribute.SetVector3(s_PositionID, spawnSources[source].position);

[fading hollow]

i dont understand, is direct link something i need to download to my project

[quasi rover]

Hello! Am I blind? Where is the Add module option? 🙉

[warm torrent]

What you see is what you have to work with
What kind of modules would you be adding?

[quasi rover]

I figured it out, thanks for the response though! :]

[warm torrent]

Figured what out?

[quasi rover]

What I needed to do

[blissful nexus]

Has anyone had luck including a Point Cache in an Assetbundle? We use point caches in a few VFX graphs in our app and use assetbundles for content delivery but Unity refuses to include them in bundles, throwing a warning:
Editor only objects cannot be included in AssetBundles

This seems like a possibly unintended consequence of PointCacheAsset being in the Editor assembly (?), and it really throws a wrench in my workflow and I can't come up with a great workaround

[blissful nexus]

After doing some digging, Point Caches are experimental and internal classes (really? they've been in the vfx package for 5+ years at least..) so cannot even write a wrapper around them. looks like i'm dead in the water and will likely have to pivot

[worthy flume]

For the life of me I cannot figure out how to snap nodes in VFX Graph to be parallel with stuff. Is this something I can do or am I going crazy?

[ashen robin]

News to me. Potentially can just grab those points and make your own graphic buffer to send them in

[blissful nexus]

Putting it on the backburner for now but I think the eventual solution will be bundling the data in a different format and having a vfx binder spawn them at runtime. In the meantime, filing a bug report 🤷‍♂️

[tired warren]

Hello, I have a vfx which shoot a gameobject and on collision, this gameobejct is destroyed, leaving a decal behind. The decal lifetime is infinite at the moment and when the max amount of decal is reached, I'd like to destroy the oldest decal so a new decal can spawn. Is it possible to do ?

[ashen robin]

Usually the particle systems/vfx graphs have their own particle pooling circular buffer, so if you run out of particles it'll just use the oldest instance. If you're making decals with projectors then you'll have to create this object pool yourself.

[tired warren]

But the vfx creates the decals itself as particles

Ad when I check the particle info for the decals, I only have access to the current alive count, I can't modify their properties it seems

Isn't there maybe an option to tell to destroy older one to spawn new ones ?

[ashen robin]

The pool itself is predetermined, so check out the emission/capacity of the system

[tired warren]

OK, I guess it's not possible. I'll use lifetime for the moment, thanks.

[ashen robin]

If you want to tell me what system you're using and how you're spawning them I can probably give you a better idea

[rotund sedge]

Anyone know if there's a way to be able to animate a mesh particle system to move like it would for a regular animation? I've seen videos of people being able to put motionanimation particle sheets to have the character meshes move and stuff.

However there's no explanation on how to make the actual sprite sheet. So I'm not sure if there's an add on or something that can turn an animation clip into a sprite sheeet or something to be able to effect the mesh of the particle.

Any advice or tips on how to do this would be greatly appreciated!

Oh and without needing scripts and stuff since I make stuff for vrchat which doesn't allow scripts ands tuff like that on avatar. So it would have to be a material thing or sprite sheet.

[stoic saffron]

I'm trying to add particles/fog into my scene and I'm following a tutorial but they have a material option to add their material but I don't.

[dire gyro]

Hi does anyone know how to unfreeze the editor?
I used to be able to preview my particle system by clicking "restart"

now this doesn't do anything

all my particles systems have this problem. Its some setting I changed on accident

time got set to 0 in my settings somehow

[quiet ether]

was gonna say.. ur Timescale must be 0

i changed almost everything and couldn't get my PlaybackSpeed to be grey'd out like that

[muted olive]

Is there a good way to make particles not clip into the ground if they're overlapping with the ground?

[ashen robin]

Physically or are we talking about something like z-fighting? If it's just a rendering problem, try some soft particles

[tired warren]

Hello everyone, I'm having an issue with a basic VFX graph which spawn a simple sparks burst. The number of mesh keeps growing in memory until it crashes. When the VFX is disabled, the number of mesh does not change in my scene. As soon as I enable it, number of mesh keeps increasing despite my sparks having a lifetime of 0.1s...

Here is after 5 seconds of playtime...

2.35Gb of meshes... only after enabling the VFX

I'm using the sparks vfx sample from the vfx samples package offered by unity, modified a little bit

Lifetime set to 0.5s....

Why does the number of mesh keep increasing until memory is full andmy system freezes ?

[tired warren]

OK nevermind, for some reason, the bounds value were set to zero, I must have messed it up when testing parameters a while ago. It's working fine now...

[tired warren]

Hi again, I've got another issue with my VFX. It creates a spark and when the spark collides with my character, the spark is destroyed and it spawns a decal. I'm using depth buffer to detect collision. The issue is that it now spawns a decal even if the spark doesn't collide with the character. How can I fix this?

The character is animated btw.

I'm not sure I can use a SDF with an animated character

[zealous wing]

When it comes to properties in VFX graph (Unity 6) what is the difference between position and vector3?

[ashen robin]

Vector3 is the data type of the Position property

[zealous wing]

but when written manually like this, is there any difference? I see position has a space type choice but depending on use I don't think it's gonna do much

[ashen robin]

New vfx graph? Looks like position is exposed in the editor with the indicator. Maybe it modifies the position property directly but that seems odd

Usually you just expose a vector3 and point to to the position

[ashen robin]

The primary particle should time out so I don't see why the collision event would produce a decal assuming you're using GPU events

Oh, unless you dont want it spawning on other objects besides the character. You can probably just grab the skin mesh render and compare against the current verts/faces

another idea is use the depth buffer that only renders the characters, but this would mean that the particles wont collider with anything but the skin mesh and clip through walls

having two depth buffers would be an idea in this case, but not entirely sure how to go about that with the vfx graph

[tired warren]

Because it collides with the floor I guess? Also I'm using the On Die event to trigger the decals spawning. But even if I use the On Collide event, wouldn't it still spawn since it does collide with the floor ?

[ashen robin]

It'll collide with anything in the depth buffer, so if you're passing in a camera that is rendering everything, then it'll collide with it all

I usually don't like to use the depth buffer for stuff like this and preferably control it more with actual collision methods which are on the CPU side unfortunately

unless this is completely for rendering and not gameplay related then it's probably fine

[tired warren]

Then what do you use?

[ashen robin]

Shapes are usually the most accurate, but otherwise grab the information on the CPU side via buffers

They just did update the collision recently. I wonder if they do have a collide with skinmesh render yet

https://discussions.unity.com/t/unity-6-collision-improvements-in-vfx-graph/1557951
Probably look around with that

[tired warren]

ok thanks

[zealous wing]

is it possible in VFX graph (Unity 6) to make bloom affect surrounding lit objects, basically I want to make particles behave like point lights

[ashen robin]

You can apply emissions via HDR shader / Bloom but they cannot create light emitting objects as I'm aware of

[zealous wing]

aight, thanks

[zealous wing]

Can I use custom attributes from VFX graph in shader graph?

[ashen robin]

https://qriva.github.io/posts/how-to-vfx-graph/

[zealous wing]

perfect, thanks again

[muted olive]

Is there a way to make the meshes this spits out not random? It only emits two meshes in a burst than dies. I want it to always spit out the same two meshes.

[runic umbra]

Hello there, I didnt find much online about this particular question :

Is the particle system good to represent attacks with a dynaic size/distance between origin and tarrget ? I feel like I am missusing the system but I wanted to ask there first

[warm torrent]

It doesn't have many tools to do that
I think all you really have is External Forces, other than that you may have to use a script to modify the modules as needed based on positions of origin and target in contextual ways

VFX graph on the other hand supports passing any external property into the graph for you to work with

So your script only needs to set the properties, such as a vector for target position, and the graph can handle the logic of what the effect does with it

[runic umbra]

I see, thanks for the info!

[ashen robin]

VFX graph is the idea if you want to modify a lot of that particle data (all or even per particle) if your project can support it

[slow hound]

how can i make my particles be influenced by gravity?

i want the particles to always go up, no matter the rotation of the emmiter

[warm torrent]

Using particle system or vfx graph?

[slow hound]

Particle System

[warm torrent]

Set gravity scale to negative so they float up and simulation space to world space so gravity is independent of rotation

[slow hound]

it just made the particles thinner

[warm torrent]

What's "it"?

[slow hound]

me setting the gravity scale to a negative number

[warm torrent]

That doesn't seem logical, it only affects the force applied to the particles

Check that the gameobject or none of its parent gameobjects have a non-uniform transform scale

[slow hound]

the parent of the particle system has a scale of 1, 1, 1

[warm torrent]

As well as all the parent's parents? And the particle system itself?

[slow hound]

yep

[warm torrent]

Then the cause for the thinness must be elsewhere
I cannot observe it in the example

[slow hound]

what extra info do you need?

[warm torrent]

The best way to show it would be a video with the particles in motion, before and after applying the setting that causes the issue, and also going through all the modules and their settings so they can be all seen by pausing the video

[slow hound]

that might be hard to pull off, since the normal iuser can only upload up to 10mb which is barely like 5 seconds of a video

[warm torrent]

Youtube has no limits, I've seen Streamable be used as well but I don't have experience with it
Cropping the video to only essential portion of the screen and compressing it within reason is sometimes enough to make it fit, both of which Windows Snipping Tool does on its own

[slow hound]

you are right, ive seen someone explain how to make booger sugar

[obtuse yarrow]

does anyone have any tips/a tutorial on building a vfx of a large field of flowers quickly blooming with some petals flying around, think the spell in frieren where she makes a flower field, i don't really know anything about making vfx from scratch

[deft forum]

Would suggest figuring out how you want to do a single flower blooming first, the rest (making more of them bloom, petals flying around) will be the easy part.

[obtuse yarrow]

Alright thank you, that does help me visualize it better

[hoary sphinx]

I have a problem, I downloaded particle legacy from the unity asset store and all materials are purple despite using the hdrp wizard, I use hdrp

[spring lake]

Which package exactly?

[hoary sphinx]

https://assetstore.unity.com/packages/vfx/particles/legacy-particle-pack-73777

[spring lake]

You're in luck. Someone ported this package to HDRP. https://github.com/Far-From-Here-studio/HDRP-ShurikenVFX-Library?tab=readme-ov-file

I've tried it and it works great.

[hoary sphinx]

thanks

[obtuse yarrow]

im interested in creating a vfx that grows flowers over a mesh from a center point (then they stay there and sway in the wind, which i know is easily done with vertex animation via a shader), the flowers would bloom as they come out of the wood of the tree ground, could anyone send a tutorial/point me in the direction of how i could do this, im not sure familar with unity vfxs sorry

[spring lake]

Have you installed and reviewed the VFX graph samples? I think there’s something similar in there. Not flowers, but objects “blooming” out from a surface.

[ashen robin]

VFX graph doesn't really have decent support for spawning animated meshes unfortunately

which is odd considering how a lot of the skinmesh renders work upon the GPU

[ashen robin]

I should check that out though. Perhaps there was something new introduced recently

https://stoyan3d.wordpress.com/2021/07/23/vertex-animation-texture-vat/
This is what you would do otherwise

[obtuse yarrow]

i havent ill give it a look thanks

[obtuse yarrow]

okay cool thank you

[ashen robin]

That + using mesh sampling / SDF tool to bake points

[obtuse yarrow]

that would let me target the "bloom" areas right like where they coem out of

[ashen robin]

Like, you can probably just do a lot of this with the animator honestly if you don't care about variance. Just give it keyframes for when and where each flower should spawn and instantiate them

[obtuse yarrow]

that was kinda a last resort, i was hoping to add some "procedural variance" but i may just animate it all "by hand" than kyou for the help

[ashen robin]

Well, the way you are describing it, you do seem to want to have some animated mesh compared to some shader work

variance in this case is for where they would spawn, and VFX graph does provide some tooling to help with that, but scripting that in yourself isn't something complex

[zealous wing]

Can someone think of some way to count the amount of sine waves that have happened since start of VFX gprah in the scene?

[latent marsh]

Hello! I have a problem.

I want those particles to dissappear when on certain spots

Thats how example particle works

using UnityEngine;

public class FogDestroyer : MonoBehaviour
{
    public BoxCollider[] restrictedAreas;
    private int fogLayer;

    void Start()
    {
        fogLayer = LayerMask.NameToLayer("Fog");
    }

    void OnTriggerEnter(Collider other)
    {
        if (other.gameObject.layer == fogLayer)
        {
            Destroy(other.gameObject);
        }
    }
}

Im using this script

As you can see, it is clearly in the collider

To be clear, i want specific particles to dissapear, no for the generator to dissapear, but for now nothing does

[shrewd rose]

I feel like this is probably going to involve depth-mask shaders.

Or stencil shaders

Basically, have the fog cover the entire scene, and use stencil shaders for the cutouts of the squares you're after

I think this has the basic effect you're after: https://youtu.be/jidloC6gyf8?si=YfHG05VUIVGi7cSk&t=433
You'd just need some finesse to get it to the shape you want

[latent marsh]

Will it work with it being smaller and smaller like in 12 different shapes?

[shrewd rose]

In theory, yeah

[latent marsh]

Also on first glance it looks like x-ray, and it can easily be bad-looking for a long term development

[shrewd rose]

Does the environment have any direct impact on the game as the board shrinks down?

[latent marsh]

The board is shrinking only because of the scripts, the fog is just a visual efect

and besides UI, and chess pieces, nothing else is clickable

[shrewd rose]

Ahh, so the number of squares goes down. It's not that the entire board is shrinking from a scale perspective

[latent marsh]

No, i just take all the pieces on newly disabled squares and kill them, and disable movement there

so king cannot go back on the deadzone

i just wanted a fog to be a cool visual effect

[shrewd rose]

That's fair

This can be used to destroy individual particles as they collide with your box colliders
https://discussions.unity.com/t/destroy-single-particles/675303

[latent marsh]

i was thinking of maybe "Eh, fuck it, i will just place flame animation on every square and enable it when time comes, it's got to be easier", but then i would have to change the card image, and i kinda like it lol

[shrewd rose]

But that'll cause a part of the fog to just blink out of existence

[latent marsh]

Ok, will it destroy generator or just particles?

[shrewd rose]

Just particles

[latent marsh]

Then im fine with it, it will destoy anything that comes near the play area that should be visible, then ill disable bigger collider and move fog in

[shrewd rose]

Cool cool. Hopefully it does what you're after 🙂

[vale grove]

trying to have a color attribute drive some gradients

not sure how to properly convert to hsv

how do we do intensity?

what even is intensity?

does it just like multiply the value or something

[ashen robin]

In shader graph usually I just multiply (or was it add?) my current color by a new color with hdr enabled just to modify the intensity

Primarily use them to emit a large bloom for the particles

[shrewd rose]

This has the formula
https://www.rapidtables.com/convert/color/rgb-to-hsv.html

[vale grove]

yes i understand what hsv is and how to convert to rgb

what im confused about is intensity

[vale grove]

will try that

[fresh tangle]

anyone know where 'stretched billboards' and something called 'align velocity' or direction err would be in the vfx graph?

I realize this capture shows very little but basically I want it to stretch towards the center since all the particles are moving there

[ashen robin]

Not too sure there is a stretched billboard setting, but align to velocity is part of the camera alignment nodes

Orient camera*

[fresh tangle]

Managed to find it. Thanks so much!

[ashen relic]

hey guys! I have this set alpha over life block in my vfxgraph which I'm trying to improve

I want to be able to set the highest alpha point in this curve dependent on another variable

does anybody know how I can do this?

oh, wait, I think I can multiple the node with another node afterwards

let me try that

[ashen robin]

Probably make a standalone curve and multiple the 0-1 output value by this dependency then feed it into a set alpha node

[fickle urchin]

VFX doesnt work for mobile games. Truth or myth?

Let me know so i dont get into that... And whats a cool course or youtube tutorial about particle system for special effects?

[ashen robin]

Usually mobile tends to lean towards more CPU particle simulation and physics due to phones not having the hardware to support GPU processing beyond general rendering. Besides that, it's up to the graphics API and if it supports compute shader which I believe in this day and age they usually do. I would just double check though as it's not something I've attempted before.

[fickle urchin]

So its best to stay with particles if im targeting mobiles?

Maybe in 5 years every mobile with have GPU..not happening just yet. At least not < $700 devices i guess

[deft forum]

Most (all?) $99 dollar mobiles these days have compute shader support.

[fickle urchin]

Hmm so what does that mean?

Computer shader support?

Its what VFX needs to show up?

[gaunt frigate]

why is my visual effects graph blackboard looking like this (1st image) instead of this (2nd image) ?

[graceful saddle]

Looked at some vfx from people on artstation, noticed this background. Is it a build in background and how to enable it?

[zealous wing]

In VFX graph HDRP (Unity6) is it possible to exclude some particles from receiving decals? I am trying to spawn decals in the same position and time as the other visible particles in the system but I don't want them to be affected by decals themselv

[ashen robin]

You'd have to use light layers / rendering layers to prevent decals from rendering on specific stuff, but I'm not entirely sure how you go about that from inside of the system. I know you can use render objects / scriptable renders to specify what layers include what light/rendering layers though.

https://docs.unity3d.com/Packages/com.unity.visualeffectgraph@17.2/manual/VisualEffectComponent.html
https://i.imgur.com/hz4ilUW.png

Think you can also just exclude them from the normal layers using render objects

[zealous wing]

aight, thanks

[ashen robin]

Well, thing is you don't really specify decal layers (light layers) inside of the vfx graph if you're emitting them from there. I think I was running into this problem before and was having to just cull the entire physical layer from having them project onto it

Maybe has been expanded upon since I've last done something with them

[prime dome]

I have an issue with ParticleSystem.
Local simulation: My torch's embers follow the player when he runs. When they should travel upwards regardless of player position.
World simulation: That fixes the above problem but then the emitter behaves like if it was offseted? I checked all variables and i failed to remove the offset. With world simulation, the embers spawn 0.2 meters to the right of its ParticleSystem, even if im not running/moving.
Anyone knows 😭 i dont get why would they offset like that.

[prime dome]

Fixed it

[fickle urchin]

Can someone tell me... VFX works in mobile games or its best to stay with particle system for mobiles?

[tough arch]

If the device supports compute shaders, then yes.

[ashen garnet]

hey guys, can you force particle in URP to use reflection probes? Tried different shaders on particle, setting anchor object on particles. Fully metallic material is just black on particles because it doesn't getting any reflection probes

[errant terrace]

You might need to do it via code
https://docs.unity3d.com/6000.0/Documentation/ScriptReference/Renderer-reflectionProbeUsage.html
Have a component on the particles that does something like GetComponent<ParticleSystemRenderer>().reflectionProbeUsage = ReflectionProbeUsage.BlendProbes

Pick a probe usage from these https://docs.unity3d.com/6000.0/Documentation/ScriptReference/Rendering.ReflectionProbeUsage.html

[neat hollow]

I'm emitting through event in code in a for loop (1 event per raycast), but I can't for the life of me figure out how to increase the particle count like I can with spawn context. I want to increase the visual representation a bit, so that I have 2 particles per raycast intead of 1, with slightly different directions. I tried by linking it to a spawn context and setting it to 2 there, but then it doesnt seem to work correctly, then it seems to only spawn once (probably because it's resetting the VFX graph this way?)

Anyone got any idea?

[neat hollow]

In case someone tried the same as me, if you use a spawn context, it can only handle 1 event per frame, so in my case it would just get overridden with each loop. So you'd have to do some queue system for events per frame for something like that.
I ended up solving it by using a graphicsBuffer that had a struct of the directions and positions.

[ashen robin]

https://qriva.github.io/posts/how-to-vfx-graph/#how-to-use-direct-link-feature
Some resources getting around that limitation

oh yeah graphics buffer is a good idea too

[neat hollow]

Ah cool thanks! I also assume a single event with gbuffer might be more performant than sending a bunch of events, although I dont know enough about it to say for sure. Maybe its overkill for my case, but at least I learned about graphics buffers hah 🙂

[neat hollow]

That post is a really good read, thank you, gonna have to bookmark that one

[tired warren]

Hello, using VFX graph, how can I make a burst using mouse click? So the faster the user click, the more burst we have? VFX Graph seems to animate the effect on a static burst speed. I guess it's possible to modify the graph parameters at runtime but I'm not sure which one would be needed

[tired warren]

I've toggled the single burst spawn node to a bool to enable with a button then disable it after 1 frame to be able to burst again but if we click very fast on the mouse, it doesn't trigger fast enough due to the frame wait :/

Any other way to make it work faster?

If I don't wait the frame, the single burst won't occur since it's gets on and off in a same frame :x

[neat hollow]

Well you could do something similar to what i was trying to and mao posted a link about. You can hook up an event with a payload which could be the spawn amount and link it directly to the initialize context

[tired warren]

But wouldn't that still not match the click count?

Let's say I have 1 particle per click spawned. Each time I click on the mouse, I want one particle out. My current solution has a delay between clicks due to waiting a frame. And the solution you suggested only impacts spawn amount which should be 1 so wouldn't that not work? Or am I missing something?

Oh ok nvm, I jsut checked the link. Seems this might work with an event indeed. I'll give it a shot thanks!

[neat hollow]

If all you want is 1 particle per click, then a simple Emit linked to initialize would work, if you want more particles PER click then that's where that link would probably do what you want, so you just control through code how many would be emitted. I haven't tried that personally, I only had the former setup with 1 particle per event

[tired warren]

Yes, it worked with the send event, perfect, thanks a lot!

Now I just have one remaining issue at the moment.

The particle spawns a decal on kill

Problem is the number of decals is fixed in VFX

Is there any way to tell the VFX that if max decals amount has been reach to delete the oldest decal so a new one can spawn?

At the moment, no new decals spawn after it reaches max amount :x

Anyway idea how I could fix this?

[neat hollow]

Hmm I'm still pretty new to VFX graph and figuring things out, but there should be some way. Each particle has an ID

[vestal fractal]

Anyone here using Gaussian Splats? looking for a guide or a library that allows rendering a Splat in VR.

[ashen robin]

https://github.com/keijiro/SplatVFX?tab=readme-ov-file
No clue about VR though

[tired warren]

Would anybody know how to delete old decals in vfx once the capacity has been reached so that new decals can spawn? The VisualEffect component has a particleInfo which gives the currently alive count of particles but no way to access them directly it seems. Does this feature not exist yet?

[ashen robin]

Does it not circulate the particle? I recall there was a settings for that or maybe I'm hullcinating. Either way, if you want absolute control of the indexing then you should use graphic buffers and control it CPU side scripting.

[normal remnant]

I have a problem with the water shader and particles. The shader has refraction effect through Scene Color. When Rendering Pass - Default transparent objects (particles) under water are not rendered at all. With Rendering Pass - Before Refraction they are rendered under water and are under the refraction effect as they should be. However, the problem is that with this approach, at a certain angle these particles seem to be always under water, i.e. deformed. What could be wrong in theory?

[ashen robin]

Scene color captures the camera's opaque texture so I'd expect that's related since you're dealing with two transparents here

[normal remnant]

so what can I do?

I use shader graph

[ashen robin]

Not entirely sure here. Quickest bandaid is just make opaque fireball and alpha clip it, but there's obviously some ordering problems going on here and I'm not sure if it being depth related is the entire issue of it.

some half-baked idea is blit the water and then draw the fireball but that would introduce a bunch of other sorting issues. Probably just need to grab the transparent draw honestly so I'd look into that first

[normal remnant]

my first time scripting custom pass and... it worked! :D

[sonic stratus]

why are all my particles lit from random directions?

[sonic stratus]

Anyone have experience with billboard particles and lighting?

I have a particle system with rotating particles, but light direction (shadows) are being roated with them. I have no idea where to go for this information. Ai, google, no answere anywhere I can't find it.

I'm very sorry if its something really simple

[sonic stratus]

[icy wing]

They aren’t being rotated with them. Your view mode is likely the cause. Do you want them to all face the player?

[sonic stratus]

Yeah basically billboard

I’ve tried forcing a quad to orientate with the camera that didn’t do anything either. Cause I can move the quad normally and it shades

That’s standard URP lit on a plane

[astral stirrup]

I NEED HELLLP

[icy wing]

Did you try scaling up the particle size?

Also check your material settings. Check your shader and ZWrite on your material to make sure it’s not being blocked by another mesh

Do check the mesh layer mask as well to make sure it can be rendered by the camera correctly without any unintended behavior

[astral stirrup]

Uhh I'm new where is that?

[icy wing]

ignore that, forgot particle systems can't render prefabs. do check the above though

[icy wing]

opaque materials ignore any modifications done on their vertex color and that's exactly why color over lifetime doesn't work in that case

[astral stirrup]

Why is only my meshes not working

[icy wing]

well i'm not too sure. your original problem was a problem with rendering one of your meshes. I haven't seen how your other render modes work

[astral stirrup]

Like billboard and stuff?

It renders fine just not my mesh

Here's it with a sphere

[dense drift]

Hi, I'm trying to create projectiles that are particles, and I want their position and target position to be updated every frame, but only one is updated, and the others stay where they spawn.

I assign a unique ParticleIndex to each particle, and when one dies, I generate the particleIndex of the dead particle for the new one.

I also pass the data in a Struct, and I update the data every frame. I'm posting the code and an image of the VFX in case anyone can tell me what it might be.

[ashen robin]

What's the initialize context looking like?

[dense drift]

This is how it looks

[dense drift]

Now I moved everything from the Update Particle and it works better but there are some particles that are generated and stay still or are never eliminated.

[ashen robin]

https://i.imgur.com/RcjoEHo.png
What I do is I send in the ID using custom attributes then assign the ID to the particle. Your idea seems fine though but it's been a minute since I've done it that way

[dense drift]

Okay, thanks. I'll try that method later to see if it works, because my idea is to have a lot of particles.

[ashen robin]

Also I don't destroy my particles. I just toggle IsAlive and reuse them when the buffer circles over

[graceful saddle]

https://gyazo.com/1b7d71962d665dbbf5160c6fd6006b69

[mellow girder]

Is there any way to set which direction the particles I have on the ground are facing? I'm using a local render allignment to get it to work on the Y axis, but on the X axis it doesn't look good

also, if I try to just parent the particle system to the tank, then the already placed particles also start turning whenever the tank turns, not just the newly placed ones

[normal remnant]

Is it possible to change the texture in the ParticleSystem so that new particles spawn with the new one, and when changing the old ones stay with the old one? I have particles of “smoke” from footsteps and need to change their texture depending on the surface. The particles are emitted by distance

[ashen robin]

I think the best way to go about that is with a texture atlas / array / texture gradient where you sample the texture at different UV coordinates. How to change the new specific particles with the particle system I'm not too sure of but it probably has to do with playing around with the vertex streams

[tired warren]

Does anybody know the max particle capacity for a decal VFX applied on a skin mesh rendered, like a single paintball splash on the character skin mesh ?

Unity talks about millions of particles at the same time and it does work fine with the sand hand example but what about decals on a skinmesh renderer ?

can I also show millions of them if I have a gatling mode paintball gun for example?

[orchid scroll]

hi guys
I need a little help with vfx graph, it was working just fine but all of a sudden it stopped working, it shows the output if i refresh the vfx graph and vanishes in 0.5 to 1 second
it looked like in the video attached

I attached as unity package, if someone can check and help me out

Thankyou in Advance!

[orchid scroll]

I can attach screenshot as well if someone would like

[orchid scroll]

solved

[dense drift]

I followed your idea and it worked for me, thanks. 🥹

[floral basin]

In a particle system how would I make a particle go outwards from the circle then slow down before going inwards?

[glass lance]

Hi everyone! I am really new to Unity and I am trying to start making particle VFX (Not the VFX graph). I have watched a ton of videos but none of them tell me how do make my particles glow? Maybe I am just dumb but nobody I have watched explained it. I was wondering if you guys know how to make particles have the glow effect? Thanks!

[floral basin]

Put a material with emission on them.

[granite narwhal]

where is the shader graph option for this node >.<

update this fixed it, i guess, i think? so good lol

also i dont know *** about vfx, what are those yellow warning signs warning me for >.<

[glass lance]

Ty

[granite narwhal]

any suggestions on making the two particle graph systems blend better?

i dont like the distinct line that it creates where the two particle systems meet

Im not sure how to go about doing this kind of thing

[warm torrent]

Does the warning explain itself when you hover the cursor above it

[warm torrent]

Generally there's two methods
Either fade the area where they meet with some type of alpha masking in the shader (baked into the color texture, separate mask texture, procedural)
And/or use particle meshes that are curved to accomodate each other (with the right geometry, a vertex shader can control the curving procedurally)

[granite narwhal]

As a non VFX artist I feel like I read another language, but thanks! I’ll break down what you said and figure something out (:

I enjoy VFX though, but I swear this stuff is the hardest part about game development (that and art in general)

[warm torrent]

It almost is another language
The first option would be just to erase softly the parts of the textures that would overlappin your effect using an image editor
The other two are custom shader stuff which are hard to explain in so few words
Either to control the transparency per pixel from the shader by whatever logic you need
Or to move the vertices in the shader

[nova dome]

Anyone know why my Structs using [VFXType] attribute are showing up wrong in VFX Graph? My struct fields are treated as node inputs, whereas Unitys struct fields are treated as outputs in their sample project? In the image, mine is the top row, Unity's is the bottom row. Both of these are right after a SampleGraphicsBuffer node

[loud tartan]

Does anyone know if it's possible to pass a shuriken particle's start color gradient as two separate colors to a shader? If so how is it passed to the input struct?

[agile hedge]

Did you ever find a good solution for splats? I tried this: https://github.com/ninjamode/Unity-VR-Gaussian-Splatting as well as the repo it was based on. I can get the splats to show up in Scene view, but in VR, it does not show up in Game view or in headset.

[vestal fractal]

Not yet. I found this but have not tried it yet: https://github.com/clarte53/GaussianSplattingVRViewerUnity

[agile hedge]

The ones I linked were for Unity 2022 originally. I wonder if my problems are related to using Unity 6

also, the one i linked, the sample project it has, does indeed work in headset. But, I can't figure out why its not working in my own project

[wooden finch]

I'm using the visual effect graph to make a targetting-esque effect, where particles flow from an origin to to a mesh, Is there a way I can get the position of the mesh property?

[ashen robin]

You can make a transform property and bind the transform to that in a script, or if the transform and particle system exists in the scene already you can use a VFX graph property binder and assign the transform to it

[wooden finch]

Ooh, a transform property may be exactly what I need! I couldn't see anything for it so I just used a Position, must've missed it. Thank you!

[brazen crow]

okay guys i have two problems here that idek how to fix or what's causing them

First: why is my particle system blooming in game scene but not in game mode ???

Second: why after i exit game mode my particle system stops? like it was just working in game scene before i enter game mode though

[tame tinsel]

hi i am new visual effect graph . How can i play only system (6) IMPACT FLIP in my scene

[opal star]

Connect a event to it’s start and send it to the vfx graph from a script

[tame tinsel]

i am doing vfx following video tutorial . In the video they dont need to create a script to submit . Their unity version is 2020 . In unity version 2022 target visual effect gameobject is replaced by vfx control .

[opal star]

If you want to play a specific system in the graph you need a custom event. Then you can submit it from script for gameplay or use the event tester in the scene for testing

[tame tinsel]

thank you but i dont understand when they press OnPlay they can play just system(6) impact flip without creating script. so do you have any faster way . In video turtorial I have not studied yet custom event . Do you have any videos about this on youtube

[opal star]

OnPlay is the default event it would play all systems in the graph.

I’m not aware of a way to send OnPlay to a specific system.

[tame tinsel]

when they press OnPlay they can play just system(6) impact flip

[tame tinsel]

i want this

[opal star]

at least to my knowledge thats not how the vfx graph works. Are you sure they have multimple systems in the example you are showing ?

[tame tinsel]

yes they have multimple systems

[opal star]

can you just send me the whole tutorial video

[ashen robin]

Your camera has a post-processing toggle on it you need to enable

[onyx lake]

Just in case you haven't found out yourself yet: you need post processing enabled and use the bloom feature. For your particles' material use HDR colors. Depending on the Unity version there are various workflows to get the post processing working, it can be a bit of a headache, but there are tutorials on the web.

[onyx lake]

Like this?

[bright hinge]

Hi everyone, I have a smoke particle effect and want to add it to a Cigarette, So I add the particle as parent of the object hoping that ingame the particle will stay on it, but this didnt work. Any ideas?

[onyx lake]

The particle system should be a child of the cigarette object and set to Local Space in the main emitter settings (Simulation Space).

[bright hinge]

thank you

[bright hinge]

sorry but heres what it is, and i have always had that setting on

[onyx lake]

Mao answered your first question. The answer for the second is that the hierarchy has lost the focus on the particle system. It should work again as soon as you select the object that has the particle system on it and play the start button of the particle system again.

One hack you can do to keep it playing, which can be useful at times, is to select the object, press play and then lock the inspector window. Then, right click on the inspector tab and add a new inspector window, which you keep unlocked. That way the system will always keep playing. Keep in mind that this is a hacky approach and has some weird behaviour sometimes. Still useful to know for some cases.

[onyx lake]

Can you record video? Would be vastly more helpful to see what's going on.

[bright hinge]

i cant at the moment only abit later

[onyx lake]

These are the two behaviours. Often times, you would have both a system for an effect in local space that moves with the cigarette at all times and another system that's in world space. Or, if things get more sophisticated, some variant of a ribbon/line renderer system.

[bright hinge]

Okay thank you! ill check this

i have no idea why mine isnt working

[bright hinge]

World setting then is what im hoping for but yeah its not attaching

[onyx lake]

Seems to be a general setup problem then. Feel free to DM me then I can help you debug

[bright hinge]

will do thank you, ill get back to it soon

[glass lance]

Thank you!

[bright hinge]

Hello! i found the problem, when i attach the particle to the Ciggi, the particles are verrry tiny so it is there and its working, but got shrunk down

[onyx lake]

Ah right, that makes sense then.

[bright hinge]

so ill just scale it up hey? No how so i sort that?

[floral basin]

Exactly like that.

[thick kite]

I'm trying to make a on hit effect and I was able to. I made a prefab with a particle effect, instanitated the partciles when I hit an enemy ect but each time I create the effect after hitting an enemy it stays in the hierarchy and has (clone) added to it. So I want to destroy it after the particle runs. so I go into the particle effect then in stop action I set it to destroy but now afterI shoot the enemy once it does the effect then I get an error in the console (Look at error message). I've seen other people do this so I'm kind of confused on why it isn't working haha. anyone able to help?

[onyx lake]

I'm trying to make a on hit effect and I

[granite narwhal]

hi any vfx experts, my animation/vfx are SUPER fast in game. I assume its the same concept of delta time needed for movement.
No idea though, any advice 😄

[astral kernel]

Does your game modify timescale?

Either way, try switching to unscaled(delta)time

[icy wing]

you need to apply a null check for the particle system logic because upon destroy, that instance is null

[thick kite]

I fixed it like 10 mins ago haha, it was a null on the gameObject, my bullet overlappd the guy multiple times (no I-frames) and over killed the guy bugging it out haha

[rapid zephyr]

does anyone know how to make vfx graphs affected by 2d lights?

[ashen robin]

How do 2D lights work? Is it part of the SpriteRender shader? If so then you need a custom sprite shader that applies those light values for the particle shader instead of what VFX provides.

https://docs.unity3d.com/6000.0/Documentation/Manual/urp/2d-visual-effect-graph-compatibility.html

[manic sluice]

I'm trying to change a property on a VisualEffect made in VFXGraph. The exposed name is "Color" and the "Exposed" checkbox is checked.
Problem is, when I try to update it in script, I get error "Value type for 'Color' is incorrect"

This is how I'm trying to set it. I've tried casting as well as simply "new Vector4(1, 1, 1, 1)" to no avail. Unfortunately there's no SetColor method on VisualEffects.
myVisualEffect.SetVector4("Color", (Vector4)Color.white);
Anyone know what's going on?

[ashen robin]

Wouldnt this be a gradient if you're doing Over Life?

[manic sluice]

I was wondering that. But saw it's attribute labeled as color. And there's no SetGradient method for VisualEffect, so I was unsure. (It's not my VFX Graph and I'm not too well versed with the tool)

I don't need it to be a gradient so maybe i can try a Set Color block instead of Over Life...

[ashen robin]

Pretty sure there's a SetGradient but let me double check

https://i.imgur.com/vcbDHpf.png

vfx.SetGradient("MyGradient", gradient);```

https://docs.unity3d.com/Packages/com.unity.visualeffectgraph@17.2/manual/ComponentAPI.html

[manic sluice]

ok thanks and my fault, i have no idea how i got to thinking it didnt work. maybe went too fast and typo'd it earlier

i'm now learning that tweening a gradient is very non-straightforward

at least the way i'm trying to do it in dotween

[winter tartan]

Does anyone know how to make it so my particles sway when the object moves?

oops wrong video this is the right one

[errant terrace]

Try setting simulation space to World

[winter tartan]

Thanks

[granite narwhal]

my vfx/particles (im using shader/VFX graphs) are SUPERR fast in game but not in the editor. I suspect the issue is caused from not using proper delta time, but i dont really know much about VFX / shaders. I guess if anyone knows where to specifically look at for fixing this issue id greatly appriciate, thanks!

[ashen robin]

https://docs.unity3d.com/Packages/com.unity.visualeffectgraph@17.2/manual/VisualEffectGraphAsset.html
The vfx asset itself has some properties related to the update time

[rapid marten]

On the VFX graph the rate per unit in Spawn Over Distance increases on turning. I've tried a normalize node, but thats not the issue.
Any ideas?

[viral marsh]

Hi, I am using Tile/Warp in order to reduce the number of particles needed.
However, it introduces an issue I am not too sure how to solve.
I am working on a snow vfx and would like all the particles to spawn on top.
However, as soon as the Tile/Warp node is enabled, they spawn in the wrong position.
Pictures:

1. Without Tile/Warp
2. With Tile/Warp
3. Set Position
4. Tile/Warp
   Thanks in advance and please @ me!

Oh wow, I just figured out what's happening as I am writing this 🤦‍♂️

Setting the value to 0.5 or -0.5 for Y just caused it to immediately warp again...

[viral marsh]

Bumping the previous q

[stiff topaz]

Do you mean when Rotating your VFX instance in the scene ? I'm not sure just by looking at your screen but the way that your change Space shouldn't be inversed ? Generaly when doing Spawn over distance setup this tend to be done with VFX in WorldSpace. So I would first set the system in WorldSpace, then in the Change Space set Input Port to Local (0,0,0) and the **TargetSpace **to World.
S

[rapid marten]

Thanks, I'll give that a go.

[tidal marten]

hi guys, i'm new here, does anyone have this pack :3

[brazen crow]

Thx I appreciate your help!

[brazen crow]

Thx man I really appreciate your help!

[frank mural]

wasnt sure where to ask but anyone knows how to reduce the radius to the sphere radius in particle system? ive played with alot of settings but no luck , thank you in advance!

[onyx lake]

The "radius" determines how big the sphere is and the "Radius Thickness" determines, whether the particles should spawn inside the volume or just on the shell.

[frank mural]

sadly whether the radius thickness is on 0 or 1 they still fly out and the normal radius i tried different sizes but still no luck

[onyx lake]

whats your end goal here? keeping them inside the sphere? then you need to use different speed settings, the sphere just determines the starting location, but not their flying behaviour

[frank mural]

my end goal is them flying only closer to the lantern rather than very messyly all over, as for example they only drawn to the light of the lantern

im trying lifetime and speed play rn , doing my best to reach that resault

[onyx lake]

I can give you a sample setup for that later in the day 🙂

[frank mural]

thank you!

[onyx lake]

Hope this helps as a starting point

Notes: the two negative radial values in "Velocity over Lifetime" are responsible to make sure the particles will always fly inwards after being spawned on the outer shell of the sphere location.
The noise module is relatively expensive when you use 3D noise. You might not need it. If this is just a small effect then 2D noise or even 1D noise might do the trick. It's reponsible for the little "random" movements of the particles to make them a bit more bug-like.

[frank mural]

thank you so much i shall give yours a try and update!

[frank mural]

it seems alot more like whta i want thank you!!

[prime anchor]

Does anyone know how I could make a round shape under an enemy that has particles, so that the round shape marks an area of that enemy?

[mellow girder]

hey! can someone tell me why nothing is showing up?

I'm trying to draw a line between 2 points, the vfxgraph and a different position

[stiff topaz]

Just by looking at your screenshot, it can be several things:
Get Position -> is set to Source. This would means that the position attribute is set thought Script with an event.

[mellow girder]

actually, things do show up, but theyre this small

[stiff topaz]

Also you don't have any orient block in your Output context.

[mellow girder]

alright, ill set it to current

[mellow girder]

which way should I orient it?

oo actually I found it

okay so it renders now

[stiff topaz]

If you set it to "Current", you'll need to set it in the Graph. In your actual graph it will default to (0,0,0)

[mellow girder]

but I would like it to not be in local space

[stiff topaz]

For the orient, Yes the Face Camera position is usually a good default for Strip/ribbons

[mellow girder]

as in

I tried setting position to use world space

but it just goes to the origin

[stiff topaz]

For the space you can change it by cliking any of the Space tag in the up corner of any context

[mellow girder]

that didnt work, but I used the Local to World node and it fixed it

thank you for the help!!

also, do you have any suggestions to spice it up somehow?

[stiff topaz]

Yes, it's because without the Local to World, your Get Position deafult to (0,0,0) local which is the space of your system.

[mellow girder]

yeahh, that makes sense, its just weird how setting the context to be world space doesnt help it

[stiff topaz]

Well usually when you lerp Vector together you want them to be in the same space. If you want to start from your VFX instance pivot position while your System is in world space then feeding the (0,0,0) local to world make sense.

Another solution could be (with a world space system) to First set all your particles position to (0,0,0) in local space. As your system is in world the conversion will be made for you.
And then in an other Set block use the Get Position current (whcih is in world as the system is in world).
If you are in Unity 6 using the Get Ration oVer strip is available also.

[stiff topaz]

Now, they are plenty of way of spicing it up. This depend greatly on what you are after. Did you check the VFX Learning sample:
https://discussions.unity.com/t/unity-6-vfx-graph-learning-templates/1571327
You can directly import them from the package manager and they are a lot of exemples of Strip/ribbons.

[mellow girder]

I was thinking of making it dashed, and make it so its constantly moving forward, but idk how to do it properly
right now, the dashes stretch if the distance increases, i want to somehow perserve the length of the dashes

also for some reason the position of the graph doesnt corespond to the start of the line

actually its because of the bounding settings

[stiff topaz]

Are you sure? Base on your screnn the Start of your line is correct

[mellow girder]

but if I set it to "Recorded" sometimes the line disappears

[mellow girder]

but look at where the axises are

[stiff topaz]

If your Transform gizmo isn't at origin it can be due to your Setting:

[mellow girder]

aa gotit tyty

[mellow girder]

how could I go about this?

calculate the distance between the 2 points and increase the amount of particles accordingly?

actually thats it

I just don't know how to go about animating it

[stiff topaz]

Did you try the UVs settings in the output context?

The Scale and Bias should allow you do so

or your can create a custom ShaderGraph if needed

[mellow girder]

I tried, it just makes the lines longer

i was thinking of moving the particles towards the target point

[stiff topaz]

This is how I would set it.

I hope this will help you. I'm sorry I won't be available for the next few hours. Hope you'll be able to achieve what you are looking for

[mellow girder]

I got this part, I just have issues with making it animated

[mellow girder]

its okay, thanks for the help still!!

[stiff topaz]

this for the animation of uv is the Bias (offset)

[mellow girder]

it doesnt seem to work for me

as in

changing the scale

[mellow girder]

nothing i change matters

[mellow girder]

holy shit i figured it out

im so stupid

i had my texture on non repeat

[mellow girder]

thank you again!

I also used a bit of chatgpt ngl

its not a bad tool

[mellow girder]

@stiff topaz this is what it ended up looking like :)

I will probably spice it up a bit more later

idk how tho

I also would love some suggestions on how I could make the attacking feel more impactful

I was thinking of like leaving particles behind

I also wonder how you could create these white attack effects?

[ashen robin]

Lot of the sword effects are mostly trails in Elden Ring

[mellow girder]

well, yeah, but I have no clue how they're done

like i cant even begin

[ashen robin]

I mean you're not far off in your video there

[mellow girder]

the trails I have are very scuffed

like very very scuffed

plus, these ones in elden ring like move

they arent parented to the blade

and idk how to make a shape and move it at the same time

[ashen robin]

https://eldenring.wiki.fextralife.com/file/Elden-Ring/skill-blade-of-death-elden-ring-wiki-480px.gif
idk, looks like something you can make easily with vfx graph

mostly gradient stuff and HDR colors

[mellow girder]

ive no clue how to exactly

i struggled a lot before

plus i dont have stuff like photoshop or aftereffects

[ashen robin]

You would parent it, but it's simulated in world space

[mellow girder]

i mean, same for mine, yes

but the elden ring one looks 10x better

obv

[ashen robin]

there's no photoshop needed. If anything, you'd probably want to make a custom shader for the gradient/texturing

gabriel on youtube has a few videos on the sword trails for vfx graph

[mellow girder]

honestly i found gabriels tutorials really bad

weird to follow, some things are just unexplained

key concepts skipped

and due to being outdated, some options either are named differently or straight up no longer exist

[ashen robin]

It gives you a basic overview as there's concepts that aren't really intuitive from the documentation

such as using particles as a guide for your GPU events

Actually, his tutorial for sword effects if just animating a texture over a quad. He does make trails using shuriken though

[mellow girder]

whats shuriken again?

[mellow girder]

yeaa

overall i feel like he really pushed for quantity over quality

[ashen robin]

Unity's general particle system module

[mellow girder]

ohh right

what if I wanted to create effects like Malenia's waterfowl? @ashen robin ?

[mellow girder]

ooo shiiit

holdon

i think im cooking??

holy shit this looks way better than I anticipated

and im not even done

[prime dome]

How do I make a particle like the subway surfers power up and then make it spin like a wheel?

[cold latch]

Hello everyone, im using unity 6 hdrp and trying to make a rain that will not happen when the player is inside a house or under something above his head, also splash when they collide with the terrain, etc. Have been trying to do it by using the "Visual Effects>Visual Effect" but cant figure out how to detect if raindrops collide with anything in the world. Can someone help me? Or is it even possible or i should use "Effects>Particle System"?

[prime anchor]

Right now I have a particle circle, but it looks a bit blurry because of the default Unity material, Particles Unit. I don't know how to make this particle circle look elegant

[eager birch]

Drag a circle texture into the "base map" area of the default unity material

[prime anchor]

Okey, and I have to do the texture myself, right? I don't know how I could make that texture

[clear spruce]

Use any image manipulation/drawing program

[prime anchor]

I can use substance painter?

[clear spruce]

I'm not aware. All you need is an image of a circle.

[ashen robin]

Shapes are the idea here, otherwise you need to bake some collision map (signed distance field) and send that into the VFX graph

You also have the depth buffer which works ok-ish, and they've made improvements, but I still feel the accuracy of baking a collider map produces better results.

https://discussions.unity.com/t/unity-6-collision-improvements-in-vfx-graph/1557951
https://docs.unity3d.com/Packages/com.unity.visualeffectgraph@17.2/manual/sdf-in-vfx-graph.html

There is benefits to the depth buffer as large collison maps require management as they do take up quite the space in mem

[prime anchor]

Okey thanks

[lean pollen]

just a very quick question, this little window for the particle system is gone and i cant find where to toggle it back on again lol

[onyx lake]

You might have collapsed it. In that case you can right click on the two lines at the top and use "expand". Otherwise you might not be on a particle system. If that's also not the case then I would go to Window > Layouts > Reset all Layouts

[lean pollen]

its completely gone so the 2 lines are not there as well and i just tried the reset and still gone

doesnt even appear when i create a new particle system

[cold latch]

@lean pollen you could have de-attached it to the panel above

[lean pollen]

god dammit

thank you very much youre a life saver

[compact marsh]

Does anyone know the best way to make particles react to baked lighting probes in the URP? Tried using the Standard Surface particle shader but that only seems to react with realtime lighting.

[lusty phoenix]

You can use the baked GI node in shader graph

[compact marsh]

Do you an example of that working? I gave it a go by multiplying the final colour with the GI node output but it didn't seem to do anything. Not sure if I used the right position/normal values though.

[lusty phoenix]

Sort of, I only have it for object in a stylized game where dismiss the entire gi texture and onl yuse one specific point for the entire object to get a TAWOG like per object shading

[random cape]

this is something simple but how do I remove the white borders at the edges of particles? having trouble finding out why it's happening
edited alpha cutoff, fixed it

[lunar apex]

custom GPU particle effects

[lean pollen]

little bit confused about sumthin, so i have this smoke trail particles that shoot out when another explosion particle plays, and it all works fine and well but when they actually play in game the trails dont appear?

the trails are subemitters and they do work in another particle system that has the exact same trails, ive got the max particles at 10,000 to see if that was the issue but still the same, so so i need to make the max particles higher or am i missing something?

[lean pollen]

nvm the problem turned out to be the way i was instantiating the particles in my script

[spiral mesa]

I'm using Visual Effect Graphs for a few days and one concern is it's hard to manage such a large graph, I prefer code.

Is it possible to manage it by code?

[ashen robin]

You can structure data somewhat using Graphic Buffers, but ultimately you should be doing the logic inside of the graph

[opal star]

No, organise your stuff with subgraphs. Being able to manually write compute shaders for the vfx graph would be awsome however. There is also the custom hlsl nobes that you can do that is as close to writing code as it gets

[carmine ether]

Does anyone know how to fix the particles being rendered over the HDRP clouds please?

(the trees are the particles) Using the vfx graph

[ashen robin]

Are you using transparency for the trees? I encourage sticking to opaque alpha cutting

[carmine ether]

yes, I was using transparency. By opaque alpha cutting you mean having it like this?

[ashen robin]

Don't have unity open but I would expect this is still transparent* as you've options for blending modes. Check the inspector side if there's a opaque surface option

[carmine ether]

ohhh okay, thanks

[ashen robin]

Or blend mode should say opaque

[carmine ether]

yeah found it there

I didn't know with opaque you could still have some kind of transparency with the alpha threshold

[ashen robin]

Alternatively you can change the transparent rendering queue, but there's still a lot of problems with that such as overdraw (but it can be eliminated)

[carmine ether]

I tried that, but couldn't find how to do it😅

[ashen robin]

I like keeping my foliage opaque as it's just easier to work with

[carmine ether]

yeah makes sense

thanks 😄

[prime anchor]

I would like to create a projectile for a distance enemy, I want it to launch magic projectiles and right now I only have a simple white Unity sphere but I don't know how to add the effects to it

Is for a 3d Game

[prime anchor]

I have added a texture with Substance Painter but I don't know how to make the particle effect, and I don't know if it would come out better with the VFX graph or if it is better to use the particle system

[crimson zealot]

you can google for tutorials, there are lots around
https://www.youtube.com/gabrielaguiarprod

[prime anchor]

I'll see if I can find a good video. It's not very complicated to make, right?

[ashen robin]

Adding some texture/coloring and adding a trail renderer can make something pop pretty easily, otherwise the shuriken (default) particle system is a bit easier to jump into than vfx graph if you don't want to spend too much time reading docs

Animated shaders can also increase the appeal to the particles by simply slapping them on, but acquiring/making them is a different story ;p

[prime anchor]

Okey thanks

[silk vortex]

Just learning VFX and Shaders, noticed my VFX Texture in scene giving an transparent square around the white circle, here's the texture i've used in the 2nd image.

Do I have to remove the black background instead to fix this issue? Because i was watching an course, the instructor made a black background and then paint a simple dot, so i just followed along, but on his video there was no grey transparents sqaures unlike mine.

Also forgot to mention, my material color is HDR so i've increased the "Glow Intensity" and alongside with Bloom.

[slow galleon]

has anyone else had problem with particles velocity? Im creating a 2D game using meshes and creating particles with meshes. I completely locked their Z position everywhere even added a Z clamp in update for every particles. I also tested disabling any velocity completely. Particles always drift away from camera in Z axis no matter what!! im getting frustrated , I have been trying to solve this the entire day.

https://pastebin.com/cKZ1cmTY

Is it Unity particle system being wrong or what?

[warm torrent]

Do you have particle system modules to show
Or are they all controlled by this script

Could help to show the "drift"

Limit Velocity over Lifetime with limit 0 on an axis and dampen 1 normally prevents any motion in that direction, restricting it to a plane

Limiting won't be required if you're not applying any Z velocity to begin with

[slow galleon]

I tried that already and im not setting any Z velocity. I think there is a caching problem. Im going to try delete and add back the component.

[ashen robin]

Unity has an option on import to specify 0,0,0 values as transparent, but potentially you do have some values lingering on your texture there. I'd find another texture and see if the issue persists

Otherwise just paint your particles against a canvas with transparency over greyscaling it

[slow galleon]

I am still trying to find why my particle are drifting to positive Z velocity when I set them to zero Z velocity in my code...

var velocity = system.velocityOverLifetime;
velocity.enabled = true;
velocity.x = new ParticleSystem.MinMaxCurve(-0.3f, 0.3f);
velocity.y = new ParticleSystem.MinMaxCurve(-0.2f, 0.2f);
velocity.z = new ParticleSystem.MinMaxCurve(0.0f, 0.0f);

var limitVel = system.limitVelocityOverLifetime;
limitVel.enabled = true;
limitVel.separateAxes = true;
limitVel.space = ParticleSystemSimulationSpace.World;
limitVel.limitX = new ParticleSystem.MinMaxCurve(999f); // no limit
limitVel.limitY = new ParticleSystem.MinMaxCurve(999f); // no limit
limitVel.limitZ = new ParticleSystem.MinMaxCurve(0.0f, 0.0f); // Z locked

What should I do I tried everything!!!
is this a Unity bug ???

[slow galleon]

wow finally I had to add this line: limitVel.dampen = 1;

-_-

stupid unity behaviour

[muted olive]

For some reason the muzzle flash which is just has the same textures as the 3 particle renderers in front of me has a grey box whenever it fires, is there anything which could cause that?

[ashen robin]

same material?

[muted olive]

Yep

[ashen robin]

Is there like 2 cameras here that you're rendering upon

[muted olive]

I don't think so but I'll double check

[ashen robin]

Otherwise throw the material on a quad and observer if the clipping issue persists. If it does then the particle system is probably clipping it, not the material

[muted olive]

There was but all that changed when I turned it off was making it so that the render pass effects it now. Which it kinda shouldn't be effected by anyways since the materials are transparent and the pass renders before transparents.

Here's one of the materials as an example

[ashen robin]

Hmm, not enitrely sure. Thing is the quad is still blending even if there was some ordering problems

I can only imagine it's some other rendering feature you've got going on that's modifying the blending

[muted olive]

Hmm ok

[ashen robin]

Best advice is just compare against those particles on the scene. There's obviously something extra going on that the gun particle is part of

[tame tinsel]

Hi i am making Viego from game League of Legend . Model making by blender

[rotund sedge]

hey, was wondering if anyone has any recommendations in if possible to keep a ribbon trail from moving the texture after it starts dying, cause you can see in the video the trail kinda eats itself catching up to the most recent alive particle. Any suggestions?

[twilit bobcat]

Hey guys, what are the reasons for still using the shuriken particle system?

[warm torrent]

Works with all devices, whereas VFX Graph requires compute shader capability
Very small overhead per system (VFX Graphs can scale better due to instancing though)
CPU callbacks for trigger and collision events (VFX Graph can also do callbacks but there's caveats)
Particles can be read/writted from a script

Subjectively I think the tool is easier to get quick results with, and easier to learn

Whether any of these are useful perks is situational

[twilit bobcat]

Do you know an example for the main caveats for physics callbacks?

But I see! I knew it was like this a couple years ago, but I thought they would've made some steps towards merging the systems by now

I guess they want to keep Shuriken for some reason 🤔

[warm torrent]

It's a more complex process practically and technically
A vfx graph can't react to anything the GPU doesn't know about, and specifically what the Graph doesn't know about due to the parallel nature of it
CPU and GPU run separately, so if either becomes dependent on data from the other, the game will freeze to wait for the exchange to happen
That means data like colliders needs to be delivered in advance to the Graph for particles to be able to react to it
And that events to the Graph and out from it should be treated as fire and forget kind of thing

[twilit bobcat]

Ok I see!

[warm torrent]

More specifically than that I'm not sure

[twilit bobcat]

No problem that's enough, thanks a lot

[warm torrent]

Generally CPU particles can fully react to any colliders and external forces that come and go at runtime, and you get collision data to use in scripts when they bump into them to do whatever with

With VFX graph the forces and collisions need to be calculated within the graph, and it needs to know how much resources to allocate for the simulation regarding them

So when a VFX particle triggers an event and sends some info to a script, it should not have to wait for the script to get back to it with instructions what to do next

And conversely C# scripts have no way to read where VFX particles actually are or what they're doing

[ashen robin]

It's a pain but fading it out earlier before it can shrink would probably be the idea.

you've a bit more control with ribbons in vfx graph such that you can just never destroy them

[bitter blade]

I want to make a large laser beam in a 3D game. I was thinking of using a line renderer but I can't find any tutorials on how to make a line renderer look good. I want the laser beam to look large and powerful with some sort of animation. It also needs to be optimized because it's for a VR game, so spawning thousands of particles won't work. Anyone know how I can make the line renderer look good or can link me a tutorial??

[spiral mesa]

VFX Graph experts I need your help! For some reason setting turbulence in Update oscillates between the non-turbulent position vs the turbulent position every other frame. I calculated the position of the wobbly particle wave using Sine and time

[dawn patrol]

quick legacy particle system question, how do I set these trails' size over lifetime so they're not just whispy boxes

nvm found the setting ignore me

[lofty dew]

Hello game makers. I have a first-person character that is holding a torch. The torch has flames using particles. I have the look I want, but the issue lies when I move the player whether by looking around or moving. The particle leaves behind a large trail, lagging behind. It makes it look like the torch isn’t even lit when moving around. However, when staying still the particles do catch up to the torch and it looks fine again. Example here: https://youtu.be/8_D9DwBOVII

How can I make it, so the particles don’t lag behind nearly as bad?

[ashen robin]

I'd make two particle systems. One that stays in the local simulation space, and another that trails behind it as it moves (world)

Unless you don't want it trailing at all then disgard the extra system idea ;p

https://docs.unity3d.com/ScriptReference/ParticleSystemSimulationSpace.html

Also an idea is to bend the verts towards the velocity, but not trail them just to give the flame some variance when moving. I think just aligning them towards the velocity would work in the renderer module, but could be more to it.

[warm torrent]

Inherit Velocity might be a perfect fit
With mode set to current and the amount as a curve ramping down, the fire starts attached and gradually becomes less attached over its lifetime
Tweak the curve shape and abruptness to taste

[stiff topaz]

Morning. From what I can see, your particles might be very quickly jumping between the two positions. The update Context is updating every frame and by default is responsible for aging, reaping particles but also for Velocity integration. This means that if your particles have some velocity, the update context by default will apply a Euler velocity integration to update the particles position each frame. In your Update Context, you are using a Turbulence node which generate a noise filed to applies it to particle's velocity. This velocity is then used to set your particles position by the update context. But in your case, you're also using a "Set position" block at the end of the Update Context, so you are in a way overriding the Particle's position. You kind of need to choose between different approach: a "position" based movement (Setting directly the particle position) or a Velocity (particle movement is driven by forces/velocity) based movement. Doing the two usually cause what you are experiencing. A third approach could be to use a Force/velcotiy based movement and add some "Offset" in the Output Context.

Usually directly setting the Position is easier to control while Force/velocity based motion is often more natural and allow you to use all the built-in Forces like Turbulences, Drag etc...
Here is a simple "Position Based" approach where i'm setting the Y.position as you described based on a Sine Wave and adding to this a Simple Noise operator:

[stiff topaz]

On my end usually I like to :
Have one tesselated Particle in Local space and orient it with the GameObject Inversed velocity. If you can script or using VFX Graph, you can go a little bit more fancy and squash and stretch the quad and also "Blend" the orientation to get a nice lagging effect. You can even go fancier with you Shader and bend vertices based on the GO's velocity in the Vertex Stage. I've made this post in the past: https://discussions.unity.com/t/decrease-particle-lifetime-by-speed/933177/4 that might help you (VFX Graph/Unity) or you can take a look at this Thread on RealtimeVFX (Niagara/Unreal): https://realtimevfx.com/t/titanlegrand-hyper-realistic-fire-torch/19115/8
While both post are not using Shuriken I think that you can get some valuable tips to solve your problem. Hope it helps

[spiral mesa]

I see, thanks I didn't know that panel had these settings.

I don't fully understand the panel settings so I will slowly read it later.

It only worked once I clicked on Skip Zero Delta Time

[spiral mesa]

Ahh it's still glitching sometimes, I'll later make a Unity project to show. It seems to glitch especially more when I have multiple instances of it (glitching every several frames), I will try debug this

[spiral mesa]

Maybe I should focus on using velocity instead of position if I want turbulance?

[spiral mesa]

So everytime I spawn one, it "glitches" the existing ones

Attached is the effect! I added it to my scene, so it almost works except when I spawn multiple instances of it, it glitches during spawning (CTRL + C and CTRL +V during play-mode).

[warm torrent]

@lofty dew Similar effects as these can be achieved in Shuriken if you're inclined to stick with it
Lifetime by emitter speed as well as emission rate over distance can create flames that spawn and disappear very rapidly in motion, as if fluttered by wind
For the shape a stretched billboard in renderer module will make particles point in their direction of velocity and stretch by speed
Rather than trying to make one system accomplish everything, the systems for fast and slow flames could be separated into child emitters
Particle trails or even separate trail renderers are useful for when the flame needs to go really fast

[rotund dawn]

Hi everyone, I'm doing a dynamite spark effect and I'm facing a problem. I have one particle system with a circle that moves along a curve. And also, there is another system with sparks. My question is how to make these sparkles move in a circle. I tried to assign the y position as the spark starting position, but it didnt work. I would be grateful for any help

[rotund dawn]

Can somebody help with this?

[ashen robin]

https://docs.unity3d.com/Packages/com.unity.visualeffectgraph@17.0/manual/Operator-Rotate3D.html
This will rotate around a point if that's what you're looking for

[spiral mesa]

Are there anyone able to solve this issue? I have attached the .vfx file on the comment above. Happy to also provide a Unity project if needed. Thank you in advance! ❤️

[slender grotto]

Hello, when manually setting particles on a ParticleSystem, is there any way to make certain particles render in front of others? I tried setting order by depth in the inspector, then adjusting the Z coordinate of the particles, but it's like bugged or something because it does not work properly, if more than 2 particles overlay they don't sort properly

[stiff topaz]

Are there anyone able to solve this

[ashen robin]

Can you clarify on the behavior of when these particles overlay? If we're talking transparent particles, sorting is done per renderer so it'll seem like they pop-out if the pivots are too close to each other

[tepid violet]

Hi i upgraded to unity 6 and some of my particles are pink. not sure what the fix is for this

[ashen robin]

Go into the Renderer module and make sure you're using the URP particle shader, otherwise do the automated URP material fix if by chance you upgraded from BIRP

[manic sluice]

Anyone know a way to add stenciling feature on VisualEffect particles? I see you can add a ShaderGraph field on the OutputParticleQuad in VFX Graph, but ShaderGraph doesn't seem to support stenciling, so not sure how to overcome these blocks. Was gonna try Render Features, but it only takes a Shader override, not a ShaderGraph

[ashen robin]

Render feature is usually the easiest way if you don't mind giving up a layer, otherwise do it in the shader

well, not shader graph unfortunately

[manic sluice]

~~The VFX still renders even after unchecking the layer my VFX GameObject was on in the Renderer. So I was thinking VFX operates differently and thus render features wasn't an option. ~~

And I'm not sure how to link a shader to a VFX Graph, since the field in OutputParticleQuad only accepts ShaderGraphs, not Shader files

[ashen robin]

VFX still respects renderer objects and custom pipeline scripts as far as I'm aware as I've had to remove decals from rendering on layers before

as far as HLSL goes, VFX graph has support for it in the newer builds, but not something i've toyed around with

[stiff topaz]

You can either use the provided shader (Lit/Unlit/6Way smoke lit) or use a custom Shader Graph. To use ShaderGraph make sure that you checked the "Support VFX Graph" in you SG asset. From there you should be able to find or drag and drop the ShaderGraph VFX Asset in a ShaderGraph Output Context.

[plucky patrol]

Quick possibly dumb question - when exactly is "PlayOnAwake"? Does it happen when a gameobject becomes active, or does it happen on awake of the program, or...?

[ashen robin]

Instead of having to call Play(), instantiating it will just auto-play it similar to animation clips

[glass cloud]

Is it actually possible to save current particles position into the texture without writing a compute shader or using a secondary camera?

[spring wolf]

heya, could someone help me out with this vfx graph particle system? as you can see, the lightning effect looks fine when it's moving slowly- but as soon as I move it quickly, it's very flat and uninteresting looking

my graph is pretty simple I think, just trying to spawn them over a distance

[ashen robin]

I would guess it has to do with how you're tiling it all instead of segmenting it out. Have you looked into the tiling mode at the top of the output there?

Or, the problem could be extending from not having enough segments as you move, but I wouldn't expect it to shrink down like that so there some other parameters at play

It probably has to due with the animation curve there as you're starting and ending at 0 which is probably being applied to the whole strip

which would make the constraint here relative to the lifetime of the particle

[plucky patrol]

It's an instantiation, got it, thank you, getting to that point where I have to care about frames 😅

[spring wolf]

sorry, grabbed dinner- thanks for the reply, I'll check it out and see what's up, what you said makes sense as a potential problem

[orchid comet]

how can I get a particle to spawn at the back of an enemy in 2D? Like a blood splatter type situation

ive managed it to spawn in the front of my enemy but not exactly sure how to get it to the other side

[ashen robin]

The position you want to spawn your particles at would be the impact direction times a few units from where you are to create them.

So something like:

Vector2 particlePos = enemy.transform.position + (direction * offset)```

[orchid comet]

oh yeah thats perfect thanks

I kept trying to minus the transform by a float 💀

forgot I cant do that to vectors

Also while im here, my current particle effect uses the stretched billboard to simulate a blood effect

but ive also seen some other effects where the particles kinda roll around (cube form)

think that mihgt lkook more interesting

[ashen robin]

3D particles with 2D is possible. Not entirely sure how to do so with the particle system though

[orchid comet]

hm, is there a way to rotate the particles when they bounce? Using gravity/collision with these but they sort of just slide along the floor

I can turn the bounce up but their rotation still doesnt change

[ashen robin]

Maybe it's clamped somewhere? Little rusty with the 2D rigidbody stuff

[orchid comet]

I’ll just toy with it until I find something I like

but thanks for the help

[spring wolf]

re: my earlier problem

it seems clear now after testing with a particle system instead of a strip system

that the spawn over distance thing is not actually spawning over distance, but rather spawning per distance traveled per frame

so if you travel 5 units, it dumps Rate * 5 particles wherever the system is as of the next frame, which seems odd and not easy to utilize

as you can see, small movements work mostly fine, long/fast movements are choppy

even seems to be happening with the recommended old -> new position interpolation

• on top of that, in debug mode it shows the total # of particles at 4k+ when i'm dragging it quickly, despite only a handful being visible on screen

very weird

[ashen robin]

https://discussions.unity.com/t/how-to-improve-appearance-of-a-moving-system-spawning-behavior/854389/7
Vlad here uses source parameter for the spawn count

[spring wolf]

am I missing an image? I assume it's that empty spot and that the unity forums have let me down

hahaha

[spring wolf]

OH

i'm blind

[ashen robin]

I'm actually not entirely sure how the solution works but I do know of the problem

[spring wolf]

thank you, let me see about that

no dice unfortunately... very confusing

this is what i have atm, same results setting old position and not

there are lots of threads on this and it seems like this fixes most of them, so i'm not sure why it's not fixing it in my case

[ashen robin]

I've a better idea how to solve this in a script and sending events in then doing it here in initialize

[spring wolf]

that's kind of what i was thinking as well

it's a bit of a pain in the ass but he does have those PreviousPosition and NextPosition arguments

so i'll try that now

[ashen robin]

or graphic buffers where you've control of every index

Ok, a few things I'm noticing. You're doing GetPosition but Vlad is sending parameters into the system which I'm guessing is the object itself that is moving, while GetPosition is the current system particle position

[spring wolf]

yeah, that seems to have been the majority of the issue

I saw people using the get position nodes but they were using trails, so that makes sense

this is using passed parameters and the spacing is much better, just have to figure out why the positions don't match the movement

[ashen robin]

Yeah it's a pain, the overall problem for this I believe is similar to the problem of not being able to send multiple events in a current frame

[spring wolf]

that makes sense

it is a bit of a pain but I realize this is a kind of hyper specific thing I'm trying to do

just for context, this is the actual spell problem i'm trying to fix

the player moving super fast makes streaks instead of convincing lightning, so this should be much better once i fix this position thing

[ashen robin]

breddy cool

[spring wolf]

thanks yo

[ashen robin]

You can also try just spawning particles by a velocity parameter you send in instead of doing it inside of the system by change of space

[spring wolf]

ah

i figured it out

i connected the float to the lerp first so it was just making previous and next position into their x component

that sucks

LOL

much better

[junior thistle]

Are lit particles gonna be a bitch on performance no matter what I do?

[clear spruce]

Why exactly would they? Calculating lighting is generally bit costly but it depends on a lot of things (lighting model (render pipeline), amount of lights etc.). If you have a lot of overdraw (large transparent particles stacked on top of one another), it can for sure be very costly

[orchid comet]

how can I make square particles like rotate as they move?

for a simply death effect in 2d

tried rendering using stretched billboard but its wonky

oh wait

theres literally a rotation over lifetime

nvm

[junior thistle]

Yea it's probably overdraw cause I get massive fps dips when they stack

[clear spruce]

Overdraw is one of the big performance issues with unlit particles too. The cost per pixel is just more with lit shaders so it will become problem sooner. Limiting the maximum allowed size of the particles on screen is one of the main ways to reduce overdraw. If you have like 10k particles and you go so close to them that they are all the size of your screen, the fragment shader for the particles need to be run 10k times for each pixel of the screen.

[clear spruce]

Although in reality it isn't that simple, you could simplify the formula to something like cost = amountOfParticlesOnScreen * averageSizeOfParticleInPixels * costOfProcessingOnePixel. You can see how it quickly becomes very heavy if you have a ton of particles, they are very large on screen and/or you do heavy lighting calculations for each. For opaque geometry generally only the top most geometry needs to be processed but the problem with particles is that they are generally transparent which means each pixel/fragment of each particle must be processed even if they are the bottom most particle in the stack of particles on the screen (because in theory it can still be visible to you even if in practice the particles in front obscure it)

[junior thistle]

I can't really avoid size scaling or make them a fixed screen size because they are physical things and the player is supposed to be able to go nearer.

One of them is a flipbook animation and thus it's hard to really control the number of particles

I can't really avoid lit, I need them for my game

I can control some others more easily, sich as floating dust particles

[clear spruce]

That's fair but likely wouldn't hurt setting a maximum size either so they don't get massive on the screen, that's likely not the main issue though. Obviously if you can go for opaque particles (with alpha cutout) for some of them, that would obviously reduce overdraw. You can also consider using some more lightweight lit shaders (per vertex lighting? mobile targeted shaders?), I'm not really aware what are available built-in though

[warm torrent]

@junior thistle what kind of particles in this case?

[junior thistle]

But I can go through them, not sure if that would make sense

Maybe I can switch the shader if too close or some other wizardry

As for vertex lighting, that's unavailable for hdrp, right?

Doesn't work

[junior thistle]

I will have some others but in this case I'm talking about silt rising particles when my character hits sand

It's a flipbook animation that I've slower down that I will make a frame interpolation shader for

(Which will probably make it worse)

But when slowed down, they double as general silt flowing for some time

I can't make that effect with just volumetric fog for example. I could, like, switch the particle for volumetric fog at some point but there is NO way that could look good

[clear spruce]

I have very little experience with HDRP but when it comes to vertex lighting, I think the cluster/tile based renderer might have something to do with it. Can you show an example what the effect looks in game so we could get a better idea what could make it heavy and how it could be optimized.

[junior thistle]

I'm not at home now and it's not finished but it's undoubtedly their existence lol. The closer I get (the more screen space they take up), the less fps I have

Exactly what you might expect

I might try to limit their spawning and duration

[frank coyote]

Can I force a particle system to render at all times, even when it is off-screen?

I'm creating a rain shader that works in camera-space

[frank coyote]

Yeah, overdraw gets brutal very quickly

i've tried increasing the "max size on screen" setting for a smoke effect to make it look nicer. I wound up with like...150 particles that all wanted to render to every pixel on my screen

[frank coyote]

(so it doesn't matter where the particle system is -- the vertices get moved to the camera)

My current plan is to just move the system in front of the camera every frame. That's a bit annoying.

[clear spruce]

I think what I have ended up doing earlier was just to increase the bounding box to something enormous. If there is a better way, I don't know of it

[frank coyote]

do i need to do that via a script?

i was peeking in the debug inspector

also, this is the old Particle System, not a Visual Effect

(i know how i'd handle the latter)

[clear spruce]

VFX graph has controls to set it directly, with particle system I don't know

[frank coyote]

it looks like i could just spawn a few particles at hilarious positions (e.g. -10000 on all three axes)

i can sacrifice two raindrops

[clear spruce]

Seems like you read the same comment but it sounds like that's the only solution. Really weird the bounds are not exposed in any way

[meager forum]

vfx graph has bounds exposed, but they dont always work. looks like when you turn on dynamic resolution, particles disappear far closer then the entered bounds. It could be due to alphaclip and dynamic resolution not working well together too for some reason.

Also, one thing I noticed, when you turn on Collide with Depth Buffer, particles draw on top of opaque geometry, probably because some type of barrier missing on vfx graph code after they try to read from depth buffer. Noticed the same thing when I tried to use a custom pass shader graph to emit a render texture to be used on a lit shader.

[azure tundra]

Question for the particles wizards here:
What's the best way of getting every individual particle position to run into a shader using Object Space for vertex animation?
My team wants to make a swam of bats as an effect, but some of my vertex offsetting is getting warped because the particles dont have a sense of "object space", everything is using world space 0,0,0 as its point of reference.

[ashen robin]

Animations with the particle systems a little finnicky as you're usually using a shared material between the whole rendering of it, but if you think you can manage that with just a pivot point of the particle then you can consider using Graphic buffers to send those points into the VFX graph.

But this means you'll be controlling it from outside of the graph and just interpolating it from within

Otherwise another way you can batch skinmesh renderers in the shader with the help of a texture:
https://stoyan3d.wordpress.com/2021/07/23/vertex-animation-texture-vat/

[azure tundra]

Graphic Buffers? Havent heard of this before. Is there a TLDR or a specific thing I can look up for that?

[azure tundra]

funny enough I literalyl have this up on my other screen aready, I was reading it when I looked over here lol

[ashen robin]

https://qriva.github.io/posts/how-to-vfx-graph/
Few extra concepts in there, but I think the idea would be the texture overall

[azure tundra]

ahhh gotcha. I wast using the VFX graph for this so far, just a regular particle emitter.

Thanks for the resources!

[stiff topaz]

In VFX Graph, the particle position is sent in WorldSpace in SG through the Object Position node.

[azure tundra]

Iiiii had no idea it did that, incredible
Is there also a way to access the rotation or normal value of the particle?
IE: I am not emitting billboard particles, but meshes. Meshes rotate in the Y axis (some look at the camera, some look to the side)

[pseudo sable]

Hello ! I'm trying to learn VFX as a beginner and currently toying a little bit with Shader Graph to replicate the Site of Grace VFX from elden ring. I have the distortion done but I have very hard edges and was wondering how I could have soft edges, maybe I should ditch the rounded rectangle but I don't know what to do then with my noise

https://youtu.be/DkaIMYnap3U

I followed a tutorial to have ripples but I can't figure out how to use them with my noise and what to plug where

My noise doesn't distort the ripples like I want

[stiff topaz]

Iiiii had no idea it did that,

[ashen robin]

This is set for transparency right? Can't really tell from the quality but if you're only getting 1's or 0s then yeah you're not going to get those soft transparent spots. You could try making a secondary setup and scale it down a bit which subtracts the alpha, or pad it with some other noise.

[pseudo sable]

I managed to get this result by using the noise directly

I can't get rid of the seam though

[ashen robin]

Better off posting the graph on #archived-shaders as you're more likely to get more answers

[pseudo sable]

Got it ! Thank you ^^

[ashen robin]

the complete graph too cause the seam seems to happen before

[pseudo sable]

Well it's in the polar coordinates here

[ashen robin]

Ah, I see. I would think just using the swirl noise node would suffice

[pseudo sable]

Ohhhhh

I'll try that thank !

[ashen robin]

twirl rather

[pseudo sable]

Ooooh yes looks great, I'll try to modify it for the ripple effect

[safe bramble]

is there any way to set custom data for a particle along with a ParticleSystem.Emit call? preferably without having to read and write the entire list of custom data for all live particles

[rotund sedge]

Question when it comes to triggers in particle systems.

I understand that having a certain trigger interact with a particle can cause it to die and what not. However im wondering if its possible to have two different triggers do different interactions.

For example I have this magical music system and a trigger is touching the notes and making them die and shoot off. However I'd like to have another collider be able to interact with the same notes, but instead of killing them and spawning the shooty note particle. It'll instead spawn in a different particle system.

But not sure if that's possible without scripts coming to play?

I dont know I kinda suck at particles lol

[ashen robin]

What's the current trigger logic you're using to shoot them off? Spawn new particle on collision?

Hmm, could probably do something with layers but I think you'd probably need to script that in

[rotund sedge]

Its just the basic trigger component in the particle system tab.
It kills the particle and the particle on death shoots out the note

[ashen robin]

https://i.imgur.com/4tdgefj.png
That seems like what you want, but I believe you need to grab it from the callback of the trigger module via code

then check the layer type of the collider would be how I'd do it

[rotund sedge]

Dang, im wondering if that would work in vechat since it doesn't accept any scripting to happen.

Would be a one time script edit or a perma script I'd have to have on the model?

[ashen robin]

Oh no scripting at all? That seems harsh, but yeah you need some way to figure out what it's colliding with in the script then produce the new particle system from that

https://docs.unity3d.com/6000.1/Documentation/Manual/configure-particle-trigger.html
Some examples there

[rotund sedge]

Yeah, its really restrictive ;-:

Cause at least from how im thinking on it, it'll just take any trigger and do the same for all the triggers.

I was thinking maybe changing it to colliders to differentiate it maybe?

[ashen robin]

I'm just not seeing anything that allows to differentiate triggers depending on whats hit from the UI itself. If you can somehow swap the system in the UI would be an idea

https://i.imgur.com/4s4oCC8.png
Like here you have the layers it can collide with, so if you can possible change the layer and the system to trigger

[rotund sedge]

Oh that's true, that's a good idea. So if I set it to collide with say ignore raycast. Im sure nothing in vrc uses that layer (i think) so it should only detect my special collider with the ignore raycast layering?

Maybeeeee

Im just picky cause I want to seamlessly make it so that you can do the tapping on a note to make it shoot out. Or when you do a different gesture it'll instead kill the note and spawn another note that instead swirls around the wand so its like pulling them off the sheet kinda

Btw thank you for your assistance with this. When I get home soon I'll def be trying some of these out and hopefully one of them works

[placid moss]

I'm working on creating my first Particle System. I've imported the mesh for the particles (a black cloud), I've created a material for the mesh and applied it. And I can see the system emiting the mesh. Great.

But In my "Color over Lifetime" settings, I've set the cloud to start orange and transition to black, then fade away. When the material I made is applied to the mesh, there's no color change at all. When I use the Default Particle material, I can see the full color transition.

What do I need to change about my material to make the Color over Lifetime settings work?

My material:

Default - Particle Material:

[tribal tree]

Unlike this tutorial :

https://www.youtube.com/watch?v=2qeNu2QApAM
(Links are broken BTW)

My particles don't snap to grid, i'm going crazy 🥲

Here is my problem

Sprites snap to grid. Not the particles, i'm not doing anything weird, but it can't snap to grid as viewed in the official tutorial

(The trail behind my character snaps correctly because i coded it, but the particle emission is free to roam between pixels :o)

[tribal tree]

I'm using URP.
God(s), please, hear my cry !

[ashen robin]

You need to hook up vertex colors in your shaders

[tribal tree]

I though we would be many here doing pixel perfect games

I guess i'm doomed 😂

If someone have an answer about this i'm willing to pay a bit

[junior thistle]

Do you guys know why particle lit flipbook shader would get worse, choppy/flickery animations compared to just particle lit?

it's a flipbook which is slowed down so I'm trying to get more more frames (rather, make it look so), but it's like the particles just appear and disappear.

Same issue at simulation speed 1 and simulation speed 0.3 (the intended one)

[tribal tree]

if anyone come for the same problem as me (i searched everywhere). I'm writing a personal particle system (aka spawning and destroying sprites).

The only official answer about the particle system not being drawn pixel-perfectly : was in 2020.
I believe it's buggy now ! It's too bad... 🙂 It seems to have worked well as seen on the official video.

[vast bay]

Hello guys! I need your help. This is my first VFX graph and I don't quite understand what's going on. These are bubbles underwater from a bottom animal. The problem is that when the animal moves, the bubbles follow it. If I change the local to world, they just don't appear. I asked the AI, but it only confused me. Where did I screw up? The screenshot shows the best working option.

[ashen robin]

Few ways to solve this but if this is a local system to that transform then from your position property there you can set it as local position then put the system in world simulation space. If you're adding to the position then make a position node off to the left there and make that local then add your other nodes to it and plug it into the initialization space if that makes more sense to you.

[vast bay]

Still trying to get it to work, no luck so far. I found this: https://discussions.unity.com/t/vfxgraph-vector3-localtoworld-transformation/1552118 and used the simplest solution from there, but it doesn't work for me. As soon as I switch initialization and update to global coordinates, particles stop appearing anywhere.

[vast bay]

I've been struggling with this VFXS for half a day. But it's my own fault for getting into a field I've never worked in (VFXS graph). LOL, my son says: don't need struggle, and do it on Particle Systems, and in 10 minutes he did it in his project, in which particles move independently of the source's movement. I'll probably do it tomorrow.

[ashen robin]

Few things to understand here is that the system space in the top right corner relates to the space the VFX system incorporates. If it's set to local then it will follow the local space of the object it's a component of. If the system is in world then the particles will not move relative to the gameobject it's attached to.

For the spawning position, if you want the particles to spawn at the position of the object it's a component of, then a local space of Vector3.Zero will be centered to the object. So the idea here is you do want that local zero space to start off with.

I suggest removing all the extra logic you have here for offsetting the position and getting the particles to spawn at the zero local space.

[vast bay]

At the input of Set Position initialization, should Get Position Current be given? Does it give the local position of the spawn point?

[ashen robin]

For your position node there inside of initialize. Detatch everything and set it to 0,0,0 at local space

that'll spawn it at the pivot of the gameobject

[vast bay]

I understand. I'll try now. Test.

[ashen robin]

Additionally, you can also grab the position using GetPosition if you want to do more logic on the blackboard there

usually has a icon to select if the coordinates it gives is local or world depending on the version, otherwise connect it to a change space node

And finally, how you are offsetting the position matters too for which space it is in. World space y+ => Vector3.Up, Local space y+ => Transform.Up

[vast bay]

Thank you very much! This is how the scheme works.

[storm tapir]

How would I recreate the effect on the thrusters of this ship? Would I use Unity's particle system or something else?

[ashen robin]

Unity's trailer renderer should work fine

[placid moss]

I'm using Stretched Billboard mode in a Particle system to create a "meteor" with a black trail. But for some reason in this mode, the trail starts at the front edge of the billboard. How do I adjust where the trail begins?

[surreal pawn]

Hi, is it possible to control how many particles spawn based on the lifetime of the particle system?

[bleak pendant]

you can use bursts for an exact amount of particles, its on the emission section

[warm torrent]

Looks like they could be meshes in the shape of the flame with an emissive transparent/additive material

[warm torrent]

"Based on" how? "Lifetime" is something individual particles have, the system itself has a "duration" because it does not have a definite end of life conceptually

[surreal pawn]

Essentially I wanted to do a blood drip effect after severing a limb, and I want a big thick stream of particles at first that thinned down into being a few drops after

[icy wing]

I think size over lifetime section in the particle system would be best for that

mixed with the trails module as well

[warm torrent]

You can change the rate over time to Curve, which will be evaluated over Duration

Start Speed also, so the velocity will drop as it goes from a stream to a drip

Any property that has the dropdown arrow can be set to change over PS duration or particle lifetime
(It's not always clear which)

[surreal pawn]

ooh yeah that achieved the exact effect I wanted

Thanks a ton!

[warm torrent]

This is useful for the appearance but not the emission
For the appearance I'd consider Stretched Billboard in this case, usually good for droplets

[icy wing]

oh gotcha, thanks

[celest sleet]

So I have a particle that is thrown out and bounces around a bunch but when it dies I need it to return back to where it spawned from, is that possible?

[warm torrent]

What would it accomplish?
Particles that are dead can't really return anywhere, on account of not existing by that point

[celest sleet]

More like I need it to return right before it dies

Mb

[warm torrent]

What's the reason, or in what way specifically? May be important to know

[celest sleet]

It’s a shield that is thrown via a particle. Bounces off walls. And then returns to the arm

Completely understandable if it ain’t possible just would look better than re- enabling the mesh when it died

[warm torrent]

Having that be a particle seems like it's likely to make things more complicated compared to it being an object controlled by a script

[celest sleet]

See it’s for another game that allows custom avatars with whatever you want to put on them. Scripts cannot be on them tho so you must make workarounds

Here is what it does. I’d just rather it return to sender instead of disappearing

[warm torrent]

If you can use sub emitters, external forces and triggers, then you could have at its death spawn another shield particle that is affected by a particle force field that gravitates it towards the starting point and applies some drag
The trigger module can then kill the second particle when it reaches the destination

[celest sleet]

THATS WHAT I THOUGH I MIGHT BE ABLE TO DO

thanks

[warm torrent]

Without sub emitters or triggers you could use lifetime curves to increase the external force multiplier from zero to one near the end of the particle's life so it stops bouncing and starts gravitating
Though having it die at the right time becomes harder then

But might give some ideas

[celest sleet]

I can use sub emitters

I can use majority of anything that comes in base unity

So the original solution should work

[golden osprey]

hey guys, im a beginner dev. looking to create rainy weather like in this video. I know i can use particle system for the rain/fog but how would I go about making the road and terrain wet/shiny? and is there anything else im missing thats required to get this effect?

oops

here is the video:

[warm torrent]

Wetness is a shader effect
Decals can apply it locally but if you need it throughout the scene it may be better to implement it for every shader

[golden osprey]

okay ill look into that, thanks

[thin sleet]

hello, can anyone point me in the direction on how to make beams with the trail module in particle system? ive looked online but i cant find a tutorial i like

[warm torrent]

I guess it depends on what you like
Trail module is more for trails as the name implies
Line Renderer could be more appropriate for a beam, especially the laserlike sort

[thin sleet]

i want to recreate the little beams in this https://cdn.discordapp.com/attachments/1373760687788003478/1376498149362896936/feeble_lords_frenzied_flame.webp?ex=68358b4c&is=683439cc&hm=d746963826d8244a96d6d2a5297583c2841c2597daaae1297532bd3a347a0af2&

I've been recommended to use the trails

[warm torrent]

Yes, they are trails rather than beams so I'd recommend it too

[thin sleet]

ah mb

can you give a tutorial? :>

[warm torrent]

But to get it how you like is mostly up to your artistic skill, as long as you're familiar with the module's settings

[thin sleet]

so i just started and found the textures i needed

and i am stuck 😭

so this is how it looks

and ignore how it looks

but ive been told to mess with sub emmitters

[warm torrent]

You'd use sub emitters for the secondary smaller trails spawned during flight, as well as for contact explosions, but not for the main trails

[thin sleet]

how would i make the smaller trails?

[warm torrent]

Smaller trail lifetime should decrease their length
Smaller width over trail would make them thinner
It can also be a curve for a taper, but tapers are usually better to have in the texture

[thin sleet]

how would i make it like go with the trail?

these are the textures i have

[warm torrent]

"Go with"?

[thin sleet]

WHAT

where

[warm torrent]

I don't know what "go with the trail" means precisely

[thin sleet]

oh

so like

lets ignore all the beams for a second and pretend its one beam, so what im doing is im shooting out 1 particle with a trail right, how would i make the sub emmitted particle system go side by side with the main trail

[warm torrent]

The way I see it you'd need to use Manual spawn condition to create multiple sub emitters during the flight, each firing off one smaller streak

The sub emitter would have a cone Shape aligned with the direction of travel of the main streak
So the sub emitter is not looping and doesn't stay attached to the main streak

I don't recall if sub-emitters can use Inherit Velocity to get the main emitter's direction of travel

If not, the sub emitter would have to be aligned by the script that manually triggers it

If yes, you can use inherit initial velocity to send the secondary streak on the same trajectory as the main streak, no cone Shape or aligning needed

And if yes, inherit current velocity could be used to stick the sub emitted streak to the main streak constantly during the flight, but it's probably not the kind of effect you're looking for

[spring lake]

Is there a redirect node in VFX Graph like there is in Shader Graph?

[stiff topaz]

Not at the moment. While it isn't ideal you can use "inline operators".

[spring lake]

Thanks. Any reason this isn't in VFX Graph? I'm pretty sure this has been in Shader Graph for some time now.

[stiff topaz]

The first part of this Video should show you a good overview of adding Wetness globaly to a scene.
https://www.youtube.com/watch?v=20WjQIFl85o&list=PLX2vGYjWbI0TV4Di9Uhg22OkOH41VcVez&index=47

You can also take a look at this video that present the Production Ready Shader Sample taht contains ready made Weather Shaders:
https://youtu.be/iV79HBv6co4?t=165

[golden osprey]

oh thank you, ill definitely check these out

[grim bear]

Does anyone know if it's possible to prevent VisualEffects from writing to the alpha channel?

[warm torrent]

What do you mean by that? There may be a confusion of terminology

Or more pressingly perhaps why

[grim bear]

So we're using the alpha channel from the render texture on top of another render texture (like a mask). When this mask is applied, unfortunately the alpha channel of the rendertexture is affected by the actual particle transparency. Using a simple fullscreen shader that lerps using alpha from the URP Sample Buffer node between green (opacity = 0) and red (opacity = 1) it shows that the texture's alpha channel is affected by the particles. The by blue encircled piece is not a particle, everything outside of it is

so I guess I would like to understand if there is a way for the particles opacity to not be applied onto the color buffer using some setting somewhere

or if it'll have to be done through a more manual approach

[broken ruin]

Can someone help/tell me why i can't find something called "Simple Particle System" in the VFX graph? I'm getting into VFX graph with a tutorial that was about 9 months ago and i can't find the "Simple Particle System" (I'm using 6000.1.3f1)

[warm torrent]

Some time after 2021.3. that has been replaced with this

There may not be a direct analogy for "simple particle system" but the templates are simple enough

[broken ruin]

oh thanks. I was worried that my Unity was broken or my PC had a problem lol. @warm torrent. Thanks tho

[junior thistle]

I may be stupid but how come my imported trim sheet particle system is using a texture which is pretty much a solid color for the albedo and it works?

shouldn't the texture be the trim sheet?

when I try using another solid texture as the albedo, the thing you'd expect to happen happens

what is going on there

[warm torrent]

Can you break it down to basics, I'm not sure what I'd expect to happen
Or what you mean by "it works" precisely
I assume you mean flipbook / sprite sheet? Trim sheets are more for wall texturing

[junior thistle]

I mean, I'd expect a flipbook texture as albedo with alpha cutouts for it to work perfeclty

This effect just has a solid texture as the albedo, but it displays the flipbook animation correctly, i.e. with different frames and different cutouts

Shouldn't that be impossible?

[warm torrent]

At face value yes

[junior thistle]

Ah maybe it's just using the alpha channel, I didn't check how the alpha channel looks

Is that possible?

[warm torrent]

It is but if you make an image a solid color, it seems at least very likely you wipe over the transparency as well
You should be able to check the texture easily

By looking at the channels separately through the texture import settings

[junior thistle]

It's not actually a solid color, it's a texture that's very bland and uniform, hence my trying to edit it

The point was there was no cutout to it, it was a solid block with color, not necessarily a solid color

[junior thistle]

Yea yea will check that when I'm at my pcnlater, seems like the only explanation

[mellow fractal]

been working on a totally home-made particle system for my game, just added the ability to sample a gradient atlas texture for color-over-lifetime
https://streamable.com/bmxw61

[silent basin]

Does anyone know if there's a way to draw a texture at a position ? What I want to do is that I want to draw a texture at every vertex of an object, I was thinking it might be possible using shader graph but I don't know if there's any other ways, any help would be appreciated !

[junior thistle]

Yea it ended up being that, of course

unrelated, but how do people make texture sheets?

Not technically, but like, how do you draw 50 blobs and have them end up in a nice slick animation?

Is there are as much artistic talent to that as it looks or is there a method?

[exotic orchid]

Howdy! New to particles, Got this little steam blowing out, I'm wondering how I can make it stop after it's done?

Like It's staying there against the wall

I can't tell if it's producing new particles or the old ones are just still existing

But the 'front half' of the spray stops as intended

Disregard me being an idiot, It's 2 particles in a prefab

[warm torrent]

They bake simulations usually
Drawing them works with more cartoony style

And is a big bunch of work

With simulations you can bake motion vector maps also for smoother frame blending
But requires particular tools

[junior thistle]

yeah but bake them from what?

I guess it's from one of those tools like Houdini

[warm torrent]

Yes typically, Houdini has very little competition and few alternatives
Smoke/fluid simulations
But also any other thing that can be represented in 3D form and displayed in 2D
Like debris from different materials

[vital ibex]

Hello , after upgrading a project from 6000.0.40f to unity 6000.1.4f all my visual effect graph are broken
I haven't any error , i test with a new loop template and my particle is not showing can anyone help me ?