✨┃vfx-and-particles

[lofty orbit]

@dull obsidian could you give me a hint about how i would be using an ortho camera in that situation? I was thinking to build a texture of something like 1xparticleCount (not sure exactly what method yet) and then to sample it from inside teh VFX graph

is there a way to use some modified camera to build a texture like that more efficiently?

[knotty surge]

Hello! I have a problem where one of my particle systems (a muzzle flash) is only facing in one direction when it's instantiated from a script.

Instantiate(muzzleFlash, attackPoint.position, Quaternion.identity);

this is what i'm using to instantiate it

attackPoint is just an empty game object, and I believe that the problem is that when the game is running, none of the position or rotation numbers change on the right

I do not have a clue on how to fix it though

[woeful pollen]

the Quaternion.identity part of that line determines the rotation. Quaternion.identity is like saying "use the default world rotation." You probably want to use attackPoint.rotation instead, but that's based on some assumptions I'm making about your setup and how you want it to work.

[knotty surge]

two things

I thought Quaternion.identity said "use the default or parent rotation"

when I change it to attackPoint.rotation it gives me this too cannot convert from "UnityEngine.Quaternion" to UnityEngine.Vector3

[woeful pollen]

there's another parameter that is bool instantiateInWorldSpace. Its default value is true. If you set it to false, then you'll be setting the local rotation and Quaternion.identity will be equivalent to using the parent's rotation.

[knotty surge]

do I need to get rid of quaternion.identity too?

[woeful pollen]

you should replace Quaternion.identity with attackPoint.rotation

you want to intantiate at the same position as attackPoint, using the same rotation as attackPoint, right?

[knotty surge]

oh my gosh it works thank you

yes

I thought I tried that but I must have not typed it right

I'm not very good at this, thank you

[woeful pollen]

haha no worries, everyone was a beginner at some point. You learn by struggling and muddling through. Happy to help

[knotty surge]

another quick question, where exactly would I turn off particles moving around due to momentum

I'd like them to just appear as a sort of "effect", but when I move my player around, the muzzle flash moves too

like, it moves around as in more than just being attatched to the gun how it's supposed to be

[woeful pollen]

you mean like as soon as you instantiate it, you want it to stop following the player and stay in one place in world space?

[knotty surge]

no, it's hard to explain

it's seems like the particles are affected by physics, but not world physics

like a muffler on a moving car

the air whooshing around it moves the exhaust around after it leaves the muffler

if I shoot then whip my view to one side, the particles look as if they're tied to the barrel of the gun, and as they're going away from the tip, they sort of lag behind and catch up

[woeful pollen]

and what do you want them to do?

[knotty surge]

I want the particles to be locked to the gun and just do their animation without interacting with any sort of physics

cause right now it seems like they're having some sort of physics interaction

[woeful pollen]

I suspect it is not physics per se. What kind of particle system are you using? VFX Graph? Old system?

And when you instantiate the muzzle flash, does it have a parent?

[knotty surge]

I just right clicked and went to Effects>Particle System

the particle system is parented to the gun but I'm not sure if that's what you meant

oh wait, I think they're parented to attackPoint

[woeful pollen]

yep, that's what I was asking

[knotty surge]

which is the empty game object on the gun

[woeful pollen]

so, I'm still not 100% sure how you want it to look. First thing I would try is having the particle system no longer have the gun as the parent. Just have it have no parent

that should make it not move from its original position after you instantiate it

[knotty surge]

okay let me try explaining it like this

I want the muzzle flash to move with the gun

but I don't just want the part where it's emitting from to move

I would like all of the particles to move, even the ones after they got emitted

right now the already emitted ones are staying where they are and the ones that are getting newly emitting appear at the gun barrel

[woeful pollen]

ah

okay

can you screenshot the inspector for your particle system?

you probably need to simulate in local space instead of world space

but I don't know exactly where the setting is off the top of my head

[knotty surge]

simulation space is set to local

[woeful pollen]

okay, so see the Simulation Space option? Toggle that to world and see if you like the effect better

[knotty surge]

same thing

also I'm not noticing another issue

when the script instantiates the muzzle flash, it appears on the tip of my gun where it should, but also at 0,0,0 in the world

every time I shoot

[woeful pollen]

can you show your whole script that is doing the instantiating?

[knotty surge]

like paste it here?

[woeful pollen]

yeah, or using a paste site. See #854851968446365696 for posting code guidelines

[knotty surge]

I can also paste it like this cause it's too big to just be a normal message

you can click to view the whole file in discord without downloading it

[woeful pollen]

it says could not render file preview. put it on a paste site

[knotty surge]

okay

https://pastebin.com/wTmujBTT

almost all of this is from a tutorial video

[woeful pollen]

okay, and the thing you dragged into muzzleFlash, is it a prefab? Or an object in the scene?

and how many bullets do you fire for each shot?

[knotty surge]

it's one bullet

and also i believe it's an object in the scene

the highlighted thing is the particle system that I dragged in

[woeful pollen]

okay, if you're instantiating it it should be a prefab

so you'd drag that object you have highlighted into your project folder

drag the thing from your project folder into the script slot

then delete the thing you have highlighted from the scene

HOWEVER

there is an alternative approach

that instead of instantiating a new one each time

you could toggle the exiting one on and off

in which case, instead of using Instantiate, you'd use muzzleFlash.gameObject.SetActive(true);

and you need to set the particle system to deactivate the game object when it finishes

using the Stop Action setting

[knotty surge]

okay I dragged it into the project folder, and dragged the thing in the project folder to the script slot

everything still works as normal, but i'm still getting 2 muzzle flash objects

[woeful pollen]

do you have this script on two objects?

[knotty surge]

is there an easy way to check?

cause right now I don't think I do, but I will later

[woeful pollen]

there's a search bar

[knotty surge]

because every gun needs it

[woeful pollen]

also, I'm really sorry for ditching you kind of mid issue, but I really need go to go bed...

[knotty surge]

me too

it's no biggie

[woeful pollen]

good luck with your game!

[knotty surge]

very early stages in the game, I will definitely ask again another time

thanks!

[lofty orbit]

the hunt for mobile-performant VR-appropriate VFX continues...

https://imgur.com/tSR4VOK

[shut token]

Wasn't sure where to ask this but have a 128x128 terrain and want to do a selection area similar to the GIF (Populous 3)

• was going to make a procedural plane and use the terrain heights and offset (have a simple mesh not using Unity Terrain), and a separate pyramid for "godrays"
• need to also select/highlight an area in between tiles as well

Kinda just wondering if there's a better way than using a mesh on top graphics wise - using URP currently in my own project

[warped gate]

i tried randomizing my particle colors per particle but its stuck on one color

for all particles and it doesnt even randomize at all

[dull obsidian]

use output particle points context, get the xyz position and set as the rgb color so it will be stored in the texture. set the position with a modulo to wrap the indices around to fill a 2d rectangle for the render texture. you could think of it as a simple non-continuous space filling curve.
an example 4 x 4 texture could contain up to 16 particle indices that look like this:

 0,  1,  2,  3,
 4,  5,  6,  7,
 8,  9, 10, 11,
12, 13, 14, 15

so, similarly, a 1024 x 1024 render texture could hold 1,048,576 particles.
the orthographic camera then looks at this "quad" made of particle points and draws to a render texture that can be red in vfx graph, unpacking the 2d index layout back into the 1d particle index / id

[dull obsidian]

that's what the layer masking and the custom frame settings on the camera are for, to disable rendering of any objects and effects that aren't necessary / not the vfx graph particle points that holding position data as color data in pixels / texels.

@lofty orbit it's not an ideal workflow but there is no direct to render texture output for vfx graph or shader graph currently. nor is there graphicsbuffer / computebuffer output which would be even better and not require an ortho cam or modulo index wrapping business. i have the graphicsbuffer output working mostly but i haven't had spare time to update my repo in a while and it may break in future unity versions or not work on certain platform and render pipeline combinations

[lofty orbit]

i see

in that case it seems like i might as well do the the physics calculations on the CPU and just pass the positions to VFX each frame using something like a PropertyBinder point cache?

[dull obsidian]

or physics on the GPU using compute shaders then use graphics buffer to let vfx graph read

[tardy swan]

Can somebody help me with my problem? I'm trying to figure out how to do everything in Unity, but for some reason I can't edit the shader/material settings on my particle effect. The whole tab is grayed out!

What do I do?

[hearty flare]

Create a new particle material and assign it to the renderer module

[tardy swan]

Yeah, I can't do that.

I can create the material fine, but it won't allow me to drag it in.

[hearty flare]

where are you dragging it

[tardy swan]

Into the box looking thing

[hearty flare]

screenshot the inspector

[tardy swan]

K

[hearty flare]

That is not the renderer module of the particle system

[tardy swan]

Then what am I supposed to put the material in?

[hearty flare]

the renderer module of the particle system

[tardy swan]

I don't have that part of the first thing

[hearty flare]

?

You click to expand the sections if that's what you mean

[tardy swan]

it ends there

[hearty flare]

Click the renderer module

[tardy swan]

oh my gosh am i that dumb

gosh darn it

thank you

thank you a lot

it helped

but also

i feel dumb

heh

[hearty flare]

It would be good if it actually looked like a dropdown, I can see how it may be confusing

[tardy swan]

Yeah

Thank you and goodbye!

[elfin pilot]

It's because you're doing your math on float so the "exactly equal 0" is never hit. Use uint/int in the modulo and compare blocks instead (set by clicking on the cogwheel on top right corner of the block). Colors of the edges indicates the type (uint/int is purple and float is cyan/light blue)

[viscid shuttle]

which renderers support the visual effect graph tool?

[quick quiver]

HDRP and URP. They initially had some support for built-in renderer but that's gone in recent versions

[viscid shuttle]

i see, i am gonna experiment with it a little to see what i can do

I want to follow this tutorial just for creating a firework effect but can't find the firework samples anywhere

https://learn.unity.com/tutorial/create-particle-spawning-positions-with-visual-effect-graph-1?uv=2019.3&projectId=5e60427aedbc2a2307880a65#5e5d0332edbc2a0a664f7059

using 2019.4 for this

I saw other people also complaining about the resources being nowhere to be found but already 2 years ago

I found them now

https://learn.unity.com/project/vfx-for-games-201?tab=materials

[brave cipher]

I've seen it where particle systems can create a ring that expands from a point. Is there a way to do this but with a square share instead?

[atomic magnet]

Hey I'm having trouble finding a solution to what should be a simple problem

I want to create a particle that moves from point A to point B with someone erratic movement (to sort of look like lightning)

and I have found guides to make lightning looking particles, plenty of them
but I want the start and end location of the particle to be predefined

looks like what I may want is a line renderer with some randomized x,y values

just need to figure out how to make the last vector3's X position be the same as the stored x position (which is relative to the world, whereas the line render is relative to itself)

[soft hull]

How to pass quaternion to visual graph?

NVM, me stupid, can pass euler angles

[fluid lagoon]

Can pass it as a Vector4 if you really need to

[worldly linden]

i'm trying to get my explosion particle system to emit light on its environment, i have created 2 light prefabs, however they dont seem to be emitting light

[bold kelp]

Is there any other way to set up animation sheet material for particle system other than using the legacy shader?

Since the legacy one doesn't use intensity

[radiant night]

Particle System to Emit Light on Environment

[robust tide]

Does anyone know if the VFX Graph works with Quest 2?

[stable flume]

In the vfx graph, when using the Loop And Delay attribute. Is there any way to count how many loops that has passed?
Alternately, is there a way to loop over all poitions in a point cache with some delay to make a smooth particle emitter?

[tacit frigate]

Hey so i made a cool little thruster VFX graph for my ship, but at medium to high speeds there is a stutter in the particles - how do i make it smooth?

[sly cobalt]

Anyone know of a way to have per-particle motion blur using the default particle system? (per object motion vectors don't seem to accomplish this)

[slate sable]

What spawn are you using?

[tacit frigate]

That would be world

I think is what you mean

Wait oh

Constant spawn

[tepid musk]

In VFX graph how would I go about orienting a particle towards the camera while keeping it flat on any given direction (shown in red)?

plugging the red arrow into Orient: Look at Line doesn't quite get this desired result

[tepid musk]

got it :)

[devout steppe]

guys i am trying to make firework with particles but in arcamera the particles are not world coordinate

they are hovering over screen

[devout steppe]

guys how can i change the size of particles , upper one , and how can i limit the height of the particles

[midnight grove]

@devout steppe Don't crosspost

[devout steppe]

ok sir

[warped gate]

https://youtube.com/clip/UgkxY5BwaH8gb_Ap4-olAmktoTzdT2e-H_eH how could i go about recreating this red slash effect

[icy kelp]

Why does my timeline only play one of my two systems?

System 2 is not playing. Even when i switch placed with the other one. Unity 2020.3.20f1

[compact raptor]

Is there any pro/con to setting the size in Initialize versus Output in VFX Graph?

[viscid shuttle]

hello, i am using URP and trying some vfx graph, but the bloom doesn't seem to really do much in the game view

this is the scene view

I was wondering what settings i might need to change for it to also look like this in the game view

[analog cedar]

how to spawn just one particle by command from script?

something similar to particle system Emit(int)

[midnight grove]

Make sure your camera is set to use post processing.

[viscid shuttle]

oh yeah that was it i forgot that setting

[summer drift]

I do that all the time.

[viscid shuttle]

yeah, i have mostly done stuff with the standard renderer so it's a bit different

[bold kelp]

Heya, does anyone know why my seamless texture still has a breaking line on a mesh? Is there anything special that I need to do with the UVs?

[warm torrent]

The UV map needs to be laid out correctly that it can repeat, hard to tell from here though

[tepid musk]

(VFX Graph) How could I store a vector3 in Initialize Particle to be referred to in Update/Output? Seems custom attribute would work if it didn't only allow floats

[wise verge]

I'm trying to do a portal effect from one camera's view to another; should I be looking at stacking in the compositor or a custom render pass? (HDRP, deferred)

Coming from old-style graphics I'd just render one camera with a stencil and the other with its inverse...

[bold kelp]

It's a very basic layout 🤔

[warm torrent]

So if you apply a repeating texture to it in blender, does it repeat properly?

Scaling the texture may break the tiling

[elfin pilot]

You should be able to set your custom attribute type in the inspector of the node (as well as its name)

[bold kelp]

That was a good idea for testing, because yeah there's no crease here and I did scale the texture in Unity

[warm torrent]

If you scale the texture using a mapping node you might notice that the scale must be an integer

[jade glen]

for some reason i can't edit the curves in my particle system, it just changes the color

[bold kelp]

You're a genius, that is going straight to my notes

Fellow black cat

[lofty orbit]

does anyone know the deal with "direction" data types in VFX graph?

they sound really useful, but they never seem to work; i end up using vector3's so the math works like it seems it should

[lofty orbit]

I also have a bit of a tricky question: I want to orient a particle that is being stretched along its velocity to always be facing the camera (for VR)

simply orienting along velocity works pretty well, but it has major flaws in VR https://i.imgur.com/8ehwXvm.mp4

so the problem i need to solve is how to stretch and orient the particle correctly so that it is A: always facing the camera directly, B: rotated correctly about it's local z (forward) axis so that C: it can be stretched by the appropriate amount based on its relative velocity from the cameras perspective

eg: in the edge case example shown above (when the particle is heading toward the camera), the particle should more or less look perfectly circular

[lofty orbit]

i got something close but it's still a bit off... i need to think about this more carefully...

what i really need to properly calculate is the velocity of the particle relative to the look direction of the camera

like a projection of 3d onto 2d

shouldn't be too hard if i do it like that....

[lofty orbit]

is this really the best way to get the directions of a transform?

oh shit that's wrong now that i look at it... lol

[wise verge]

Anyone know of a way to trick the "mirror" into seeing a different location? I'm basically trying to get the HDRP "reflection probe" to make a magic mirror elsewhere

[devout steppe]

i want to add sound on when the particles start and when end

[fervent horizon]

solved it, sorry

[brazen grove]

What's the most efficient way to get particles to emit on collision?

[lofty orbit]

efficient depends on your needs

typically one would use the OnCollisionEnter() callback in monobehaviors... Depending on what particle system you're using, how its set up, and other specifics, different options might be cleaner, easier to implement, more performant, etc...

my favorite method is to link named events (VFX graph) directly to initialization contexts

you can pass in standard and even custom parameters if you set things up right

[vapid wagon]

Hi everyone, I have a particle system where I spawn some cartoons words like in the video, I would like the words to be rotated in a certain way based on the angle between the original spawn point and itself to make it less rigid, as in the picture here.

Is there a way I could make it? I'm using the particle shape: "box" to make it spawn randomly around the smoke, with this I don't know is there a way to give them a starting rotation based on the angle between them and the spawn point.

[wintry hearth]

Hi ! Is there way to Lerp between two Signed Distance Field (with two Texture3D) or two Meshes when positioning particles ?

(with VFX Graph)

[wintry hearth]

okay, i found a workaround by lerping attractions & other properties for two stacked conform SDF, but nothing yet for Mesh surface position for example.

[hoary lance]

What's the most correct/idiomatic way to get a LineRenderer to draw 'always on top' of everything else in a 3D game?

[woeful pollen]

imo putting a material on it with its render queue set to something late like Overlay

and with a shader that draws on top of everything

[split laurel]

Particles flicker on this output node. On line works fine, but can't use a texture. I can't seem to Set Scale particles too. Whatever values I use, 0 effect

I have a 1px x 4px line, but it renders squares. Here you can see the texture I'm using. The squares are the "output".

[inland jasper]

I was wondering if someone could help me out. I have fabric in HDRP and I want to add peach fuzz (fine sparse little hairs that in most fabrics) is this something that I can do with VFX graph for a still image? I’m kind of new to VFX graph so any help would be greatly appreciated.

[dull obsidian]

it's not impossible but compared to SDFs it's more difficult and less flexible to work with Mesh data in this way. you may be better off using the Mesh to SDF baker included with Unity, which can also work in real-time via the C# scripting API

unity VFX graph is mainly geared towards dynamic real-time particle systems so while you could use VFX graph with the HDRP hair shader in Unity 2021.2 it's not required for this. You'll want to use the HDRP Hair shader either way with the physically based material model. whether your fuzz strand geometry is imported from 3d modelling software or created in unity with VFX graph or other methods is less important, but for a still image using VFX graph seems like overkill to me. I'd just make the strand geometry in Houdini or Blender, Maya etc whatever you are familiar with and import it into Unity, render with HDRP Hair Shader with Physical material https://docs.unity3d.com/Packages/com.unity.render-pipelines.high-definition@12.1/manual/master-stack-hair.html

[inland jasper]

@dull obsidian ok makes sense, thank you for your help

Does unity have xpd importer ?

That converts xpd to geo strands

[rugged mural]

I am learning Unity 2019 and the particle systems. I googled and looked up online tutorials, but is there a way to have a particle source/render to randomize between multiple 3d objects?

[split laurel]

I'm using VFX Graph and following some tuts. On the tuts they are using Unity 2020 URP, same as me, but they have Shader Graph field on their Output Particle Quad and I don't

this is mine

I refreshed UI and now all VFX Graphs show Shader Graph field. Makes no sense at all, but it's resolved 🤦‍♂️

[safe helm]

actually for a still image i don't see why not. If you ever do it using this method i would love an update about how it goes. also i think you'd want to bake an SDF or a Point Cache of the mesh for this method, you can do it inside unity.

[dull obsidian]

as far as i know there is no XPD import, you'd need to unpack the primitives in Maya export to FBX and import the FBX into Unity, the mesh will have many more vertices but it's to render a still image anyway https://docs.unity3d.com/Manual/HOWTO-ImportObjectsFrom3DApps.html

[dull obsidian]

@inland jasper Alternatively, a reason you might want to generate the fuzz strand geometry in VFX graph in real-time (as @safe helm mentioned) is to quickly iterate on the shape and density of the fuzz strand geometry to your liking, without needing to export from Maya, import to Unity, repeat You could use VFX graph particle trails for this (tutorial here: https://www.youtube.com/watch?v=ok42y7WJ7TM) and use the new VFX Graph + Shader Graph integration in 2021.2 to use the HDRP Hair shader. (not covered in tutorial, so refer to documentation here: https://docs.unity3d.com/Packages/com.unity.visualeffectgraph@12.1/manual/sg-working-with.html) It might be more difficult to set up and the performance cost may be much greater versus static geometry. It's a tradeoff that also depends on how comfortable you are with Maya vs Unity VFX Graph in terms of workflow. Regardless of you you generate the geometry i recommend using the Hair shader and Physical Material setting use the Physical material setting as I previously mentioned (here #✨┃vfx-and-particles message)

@inland jasper or if you prefer the Maya workflow, this new FBX Export package with Maya Integration may ease the Maya -> Unity pipeline and reduce iteration time by automating the export and import process https://docs.unity3d.com/Packages/com.unity.formats.fbx@4.0/manual/integration.html

[inland jasper]

@dull obsidian this is great information, really appreciate it. I will do some simple tests today and see what what works for me. Thanks a million

[warped gate]

i do not know whats happening with the vfx graph decals

[hot field]

I can't import the particle system thing in the brackeys video

Its greyed out for me

[inner topaz]

beacause that tutoreal is super old
the packages you find there are probably now available in the asset store for free

could be this package
not 100% sure
https://assetstore.unity.com/packages/essentials/tutorial-projects/unity-particle-pack-127325

[loud knoll]

what do i do about this, yes i pressed the button

[tribal nest]

Is there a way to hide the orange outline when previewing a particle?

[midnight grove]

In the gizmo drop down at the top of the scene window, turn off selection outline.

[waxen holly]

does enabling post processing on the main camera affect performance if you do not have a post porcessing volume enabled on "lower" quality?

[warped gate]

https://cdn.discordapp.com/attachments/438387938947235840/932039650212720711/2022-01-15_23-30-18.mp4 it still doesnt work

[warped gate]

decals are such dogshit

[tribal nest]

thanks!

[bright tusk]

can someone tell me why there's these streaks in my trail?

[warm torrent]

The streaks are caused by overlapping polygons / segments
They usually occur at tight turns but I can't say why they're all over it

[bright tusk]

I'm assuming its not meant to have this many polygons

hmmm. Changing min vertex distance has the biggest effect on it. But nothing i do seems to really help much

[safe helm]

Decals in VFX graph spawn facing forward by default, so if you want to project it on the ground, you can set the angle to 90/-90 in the X axis.

[warped gate]

i did this and it didnt work

it still flickers, partialy dissapears, moves with the screen and other weird things

[safe helm]

and the orientation is off? also in scene view (sometimes) it looks weird but if you look in the game view it looks normal

[warped gate]

actually it is a bit better

like a bit as in it still bad and isnt what i want but is better

also the distance is jus

like 2 meters at most

you cant see it

[safe helm]

you mean the effect bounds ?

[warped gate]

i mean ig?

idk if its the bounds or sum

i thought the bounds are like per object

per particle i mean

[safe helm]

you can increase the bounds size at the top of the initialize context that should help. you can also use recorded bounds, i find it very useful

[warped gate]

how do you set that

[warm torrent]

Well the streaks seem to be gone don't they

But you've got a new problem which is the jagged tail

The fix for that is: don't decrease trail size over its length, instead use a texture that tapers off

The traditional type of UV mapping used by the trail and many other things simply can't handle tapers, for math reasons

[safe helm]

Top right if you click control, you'll see this menu, change the type of the system to recorded and press the record button.

you should see the bounds changing in the scene view. and clicking "Apply Bounds" will change the system bound to the recorded values

[warped gate]

Alr thanks

[main viper]

Hi how can I spawn particles (vfx graph) in the green area?

Ignore the typo

[prime dome]

Hi, maybe this tutorial can get you started: https://www.youtube.com/watch?v=pDayqvyE7VY

[main viper]

thanks!

its sadly only about editing particles not spawning them

[prime dome]

@main viper how about this? not perfectly what you requested, but its very close

[main viper]

close enough, thank!

[queen cosmos]

does vfx graph support hdr colors?

i'm setting the intensity to +2 to +8 but the output mesh (plane) isnt glowing

[kind fox]

What's the best way to learn vfx?

[elfin pilot]

It does but with lit you have to use emissive, diffuse is clamped. Unlit should work

[twin blade]

I'm trying to use Graphics.Blit to draw a circle in positions on a rendertexture, but whatever I do, i just get a lot of repeating circles all over the render texture. I tried with both Clamp and Repeat on the texture I Blit with. What am I doing wrong?

[tame cedar]

ive got my particles set to burst but each particle appears then dissapears at exactly the same time, how can I add a slight delay to some of the particles?

[hearty flare]

set their lifetimes to randomise a bit in the emission module

[tame cedar]

thanks, exactly what I was looking for

[warm torrent]

@tame cedar You can pace the start by reducing burst Count and increasing Cycles, with some added Interval

[main viper]

How could I make vfx graph particles orbit this circle with their spawn distance to it? Would the cross product of the axes be a solution?

[elfin pilot]

Hi Max! Rotate3D operator is probably what you're looking for https://docs.unity3d.com/Packages/com.unity.visualeffectgraph@10.8/manual/Operator-Rotate3D.html

[main viper]

Thanks!

[median jasper]

Hey my particle system doesnt seem to have the boxes like Size Over Lifetime and other ones. Anyone know why?

[tame cedar]

how can I make it so the particles appear infront of the ground instead of clipping through it?

[onyx lake]

If you want them to render above everything you can set the ZTest Mode inside the shader to Always.

[tame cedar]

Oh ok thank you

[keen wasp]

Why the particls dont show in the game ??

help pleas

[steady zephyr]

how do I turn "cast shadows" on for VFX graph? outputting lit mesh

[warm torrent]

Are they behind or in front of the camera

[shadow scarab]

how do i make my particles fall down/spread out in a specific angle

[shadow scarab]

possibly, layering

[warm torrent]

Not sure what you mean by "in an angle"

[small parcel]

Hey all!

I'm having some issues with the quality of the particles im trying to render

does anyone know why the scene view is rendered alot clearer then the game view?

[warm torrent]

Your game view is zoomed in

[small parcel]

so issue with the camera?

Been trying to poke around with it but no results yet

[small parcel]

First project so thank you for patience

[warm torrent]

I mean this thing, it's only used for previewing in the editor

[small parcel]

okay i put that back to 1 but still same issue

it still seems strangely blurry in the game view

[small parcel]

i need really crisp quality so whatever you recommend to achieve that im all ears

[warm torrent]

Can you show another picture? The issue there was clearly the zoom so at least that should've improved

[small parcel]

Yep ofc give me one sec

this project is my child and trying to merge it to Unity

previously on Processing & p5

[warm torrent]

Hard to say what's wrong with it
I can see some sort of "crunchiness" which reminds me of the filtering unity uses when Render Scale is decreased on the camera or quality settings

[small parcel]

Hmmm im not too sure

is there any settings in here you would suggest edtiting?

[warm torrent]

I'd look for the render scale in quality settings just to verify that it's not below 100%

TAA can also cause blurriness, but I'm not all that familiar with HDRP

[small parcel]

What is TAA?

Oh wait I see it

But uncertain about it

im going over youtube videos but not having much luck

any other sources you could recommend?

[warm torrent]

For what specifically?

[small parcel]

troubleshooting the resolution issue

Still the same problem L(

😦

[warm torrent]

Hard to identify it
I'd check if it persists in the HDRP sample scene, and verify the render scale quality setting

[small parcel]

Okay i'll give that a go

[elfin pilot]

Hi. Yes most probably TAA. You have 2 options for this in the output inspector. "Exclude from TAA" and "Generate Motion Vectors". In your case (small additive particles), the former is probably more appropriate. More info here: https://docs.unity3d.com/Packages/com.unity.visualeffectgraph@10.8/manual/Context-OutputSharedSettings.html

[small parcel]

Firstly thank you for the reply

And secondly where can I find exclude from TAA?

[elfin pilot]

In the output inspector. Every VFX graph node makes use of the inspector to display additional settings. So you need to open the VFX in the VFX Graph editor and select the Output Context.

[small parcel]

Got it, it made a slight improvement I believe

[elfin pilot]

btw to answer @steady zephyr as well, turning on cast shadows will be in the output inspector too

@small parcel You can try both options and see which works best. Very small fast moving particles are generally the worst case for TAA to handle

[small parcel]

Do you suggest having them both toggled?

It seems to look better

[steady zephyr]

thanks for replying. where is the output inspector?

[small parcel]

but still something is off

[small parcel]

if you open ur vfx graph and then click on the output section

it will appear in the inspector

[steady zephyr]

thank you both

[elfin pilot]

No I suggest using only exclude from TAA for fast moving small additive particles (the drawback is that some slight flickering may appear on still particles). Generating motion vectors is more meant for particles writing depth in order to remove ghosting with TAA, but if exclude is toggled on, it should have no incidence regarding TAA. Having both can still be relevant in combination with motion blur for instance though (or any custom post process reading velocity buffer)

[wary bramble]

Why is my brightly white material creating grey-ish particles?

[azure delta]

is there a way i can have trails on some particles and only se the trails without this visual bug happening?

[stoic lark]

I'm doing some things in a particle system and changing the "color over lifetime" gradient.., why doesn't the colors match here?

[shadow scarab]

how do i make particles affected by gravity?

[azure delta]

can you show the entire window and not just a part of it?

[stoic lark]

@azure delta

[azure delta]

interesting, you have the color selected and everything, thats very strange

[azure delta]

is it the correct color when it spawns tho?

[stoic lark]

I think so.., it's odd indeed.., could it be some weird windows gamma setting?

[azure delta]

maybe

[slate sable]

That usually only happens with HDR on that the color values are much higher and on screenshots everything looks very bright.
This is very weird

[slate sable]

Should all the colors be fully saturated? They all look dull

[stoic lark]

well at least white should be full on white

the other colors should in this case be a bit dull but given the weirdness of white color you question it (I don't have it in front of me right now to confirm)

[alpine wolf]

why cant i see my particles in the game view? i can see them in the scene

[hoary lance]

Particles are defined by speed and lifetime--if I want particles to travel a specific distance (i.e. from one v3 to another) each time the system is used, is the best way to do this to do the math to calculate and set the lifetime based on the desired speed/distance?

[earnest estuary]

Hi, im trying to make a particle system as shown at the time i copied in this weird language video: https://youtu.be/RnG8zez9wZg?t=239. Sadly the video doesnt have a step by step guide so im trying to figure it out only from what i can see in the inspector. So far its not been going great. Here is a video of what ive made. Can somebody help me with this? I would also like to say in advance that im a beginner with particles.

[earnest estuary]

(The effect at 3:54)

[median jasper]

Still never got a answer to my question on the unity forums so ima post the link to the forum here
https://answers.unity.com/questions/1882251/particle-boxs-not-showing.html

[hoary lance]

Not sure if this belongs in URP or here--what is the expected format/settings for a texture/material to be used for a particle system? No matter what I try I can't get it to accept color--the particles are always white

[fluid lagoon]

Show your modules

[hoary lance]

Modules? 🤔 Do you mean the texture and materials settings?

This is just one of many combinations of settings I've tried. I have tried importing as sprite, which iirc is correct for built-in, I've tried importing as Default, I've tried going nuts on all the sliders and toggles in both of those

All the checks under advanced

This is the texture itself, I have tried with the background as alpha OR as black, neither work

This is with it as alpha

This is the material. Again this is just the latest of many many settings combinations I have tried

Shader is URP/Particles/Unlit

[fluid lagoon]

I mean the modules in the particle system

[hoary lance]

The particle system works fine. I can use the default particles and they show color with this particle system, but my particles do not

Default particle material

Here's with mine

[fluid lagoon]

Show your material vs the default particle material

Which shader is the default particle material using

[hoary lance]

Idk how to pull up the default it's "hidden" in the engine

[fluid lagoon]

Just click it

[fluid lagoon]

from here

[hoary lance]

Looks like white on black for the texture

"Progress"

Got color working at the expense of transparency lol

Closer, but this black ring... 🤔

Okay apparently that was fixed by turning of sRGB

Sec lemme get the settings together in one screenshot so maybe future searchers can find this

[small parcel]

Is there anyone here that is interested in hoping on a call with me to help me troubleshoot my VFX project?

would pay per hour ofcourse

I need to finish this project asap and could really benefit from someone skilled to help speed things up

[hoary lance]

For future searchers: Here is the apparently correct settings for the texture import and material settings to get a White On Black png texture to properly render both the alpha and the color for use in a URP Universal Render Pipeline particle system

[small parcel]

Welp I guess I'll just continue poking at my code for now

i contracted a dev to help me create a unity software that spawns particles based on a CVS dataset

but it's not working and the dev isn't responding 😦

i have a script that reads a cvs sheet and creates a game object for each row of data

but really buggy and not really working

[sinful bear]

hey does anyone know how to create green effect from this film https://www.youtube.com/watch?v=sL2o82VTxcM 1:17? i mean doing circle and texture coing off centre of it

[small parcel]

whats the best way to spawn VFX particles based on data?

[inner topaz]

depends on what data.
you can bake it into a texture and use that to feed the data to the VFX system

[lyric phoenix]

So I have a particle system that is the child of an empty game object labeled as Player, I have the actual charactercontroller gameObject inside of the Player gameObject and a particle system inside the Player GameObject as well. However, when I start the game, the particle system doesn't show up. The only time it shows up is if it is child of the character controller gameObject and not the Player gameObject.

how do I resolve this issue

[small parcel]

a collection of float values (between -10 ~ + 10) with corresponding time stamps

[harsh bridge]

Hey guys!

Has anyone ever used the default lens flare system in a way that looked cool?

I haven't really gone deep with it but it looks pretty bad to me

[scenic torrent]

Im trying to edit a particle system in code and I can't get it to change no matter what I do

when I change that value to be its absolute, it doesnt change in inspector, it doesnt change on the object

the debug code says it changed, but it doesnt change

and I cant figure our why or how to fix it

im at my wits end debugging everything, thats 10000% the right object, the right class, the right module, every single thing debugs as right

except it doesnt work at all and nothing changes but debug says it chjanged and I dont know why

[earnest estuary]

Hi, my particles system changes size so that is always the same size on screen depending on how far the camera is. How to make it not change size?

[slender swallow]

Is there any way i can make particles not appear on the ui?

[timid spindle]

how do i apply a y force to particles when they are spawned in? i want to create something similar to the particles for when the player is running in minecraft

[prime dome]

i have many single sprites, i wasnt to create an animated particle but dont know how to turn these into a texture sheet

[prime dome]

how can i set my particles start rotation?

[hearty flare]

It's just the basic "can't modify structs returned by properties" issue https://help.vertx.xyz/programming/common-errors/compiler-errors/cs1612

[burnt kraken]

When I call Stop() on my VFX graph component it only happens after 6 seconds or so, any guesses as to what this could be caused by?

[scenic torrent]

Is it possible to use a particle system as a SpriteMask?

As in, render only inside or only outside of the particle's sprites?

im fairly certain that is what this artist did, but its possible they faked it and those circles arent actually holes but are just identical color to the background

[warm torrent]

I don't think particles are able to use SpriteMask specifically, but there are other ways to make that kind of effect

Background color particles is obviously the simplest and least flexible way

It could be a custom particle shader, made with shader graph for example, where a circle that expands based on particle lifetime is multiplied with the sprite's alpha channel

Could be some custom renderer pass that works just like sprite mask, though likely with the drawback that the holes particles will be rendered over any fire particle regardless of distance

One system like this I saw used off-screen camera and particle systems which were rendered to the texture used by the on-screen flames, but that seems kinda expensive and clumsy

[scenic torrent]

Hmm interesting, thank you for the insights. I agree background and off-screen camera are not very flexible.
I am using Shadergraph. My understanding of materials is that the entire pSystem would use one single material, so how would I control the emission of the 'holes' in shadergraph?

Render pass I could look into. What do you mean by the holes would render regardless of distance?

[warm torrent]

I don't know much about coding it, but if you mask the holes and flames in one pass, holes up close will also cover flames far away, without a workaround of some kind

[scenic torrent]

Ooooooh like 3D distance I get you now

I'm working in 2D so I hadn't even though of that

[warm torrent]

In 2D that wouldn't be a problem I suppose

I don't know what you mean by emission of the holes
If they make a hole in the alpha channel, I don't know how they could be emissive

[scenic torrent]

Oh sorry not emmissive like the 'Emissive' channel

Emit as in how would I create the "particles" in shadergraph and not an actual particle system

The stencil buffer method seems to be easier to achieve though since I am not using 3D

[warm torrent]

That sounds like the best option
You can't really make particles within the shader graph, but you can get something similar with radial gradients which move and expand according to particle lifetime, with some math

[azure delta]

i want to hide the part of the mesh that is under the table and only show the part of the mesh that is above the table. I read a little about zMasking but im not sure if that is what i need or if i should write a shader to not render the mesh when under a certain position

[warm torrent]

In my mind it would be easier to use a vertex shader to clamp the vertex position onto the inside of the table, or above it

So parts under the table would be squeezed into a thin plane

[azure delta]

yeah, i can see how that is a very easy way to do it 🤔 ill try it out and if i cant figure it out ill be back

[scenic torrent]

Worked on this today but didnt make much progress cutting holes

explored shader graph and stencil related sollutions but nothing came up functional enough

[terse ore]

uhh hello

i need some help with the vfx graph

[terse ore]

i can't assign any vfx shader graphs

i'm using hdrp

[hearty flare]

What can't you assign? That screenshot isn't indicative of anything

[terse ore]

i made a smoke vfx graph

i can't assign it

heres a shader graph i made, its a vfx shader graph

i have no option to assign a shader graph

on the vfx graph

(shown in the screenshot)

[hearty flare]

Go to the editor Preferences and enable Experimental Operators/Blocks

[terse ore]

thanks!

[dull obsidian]

@terse ore also, instead of using the basic Visual Effect Target i highly recommend trying out Unity 2021.2 or higher with VFX Graph's** Improved Shader Graph Generation** for HDRP. It is much more flexible and powerful as it is more or less a "regular" Shader Graph as you would make and use for any other material, not just VFX graph. more info here: https://docs.unity3d.com/Packages/com.unity.visualeffectgraph@12.1/manual/sg-working-with.html

[viscid shuttle]

where can i see which platforms are currently supported for VFX graph with URP

[sturdy forge]

I'm not that familiar with the VFX workflow, but I'd like to add some saliva/drooling effect to a beast in one of my cinematics, it would have its jaw wide open near the camera and I'd like to see saliva in the mouth and flowing outside of the mouth. What tools should I be using? VFX graph? Alambic ? Any tutorials covering similar techniques that you know of ?

Aiming for a semi-realistic look, for an high quality cinematic
Thank you

[lofty orbit]

im having bit of an issue with the spawning of particles and interpolated rigidbodies... During fast motion and turns, the VFX particles are being spawned at the fixed-update spots pertaining to the rigidbody, even if i try spawning them in Update()

the camera itself is attached to an interpolating rigidbody, which is basically the crux of the problem...

... Wondering what my options for addressing this are...

I'm using a big unified graph for everything, and at the moment everything is done in world space (im passing the camera transform into the graph in order to dynamically change things like bounds and other stuff), so i was thinking that I could make the entire graph exist in the camera's local space?

my only issue is that i need pretty much every particle to have a consistent worldspace position (i.e: they dont move with the camera)

[lofty orbit]

well i figured out a good enough solution; just use the last position instead of the new one

[next steppe]

why are my particles just white squares

im using a png for the texture of the material

but its just white squares f

[ashen mirage]

Alright, from a quick Docs look it's because your material isn't using a compatible shader for a particle system.
Change your current UI one (UI/Unlit/Detail) to a particle one (under the Particles/ section).
Then set the texture by clicking on the square to the left of the Albedo field.

https://docs.unity3d.com/Manual/shader-StandardParticleShaders.html

[true fractal]

Why has this happened when I changed my car from transform to rigid body? (before it was a solid black line)

[warm torrent]

With this little info this is a stab in the dark, but is the rigidbody set to interpolate?

[broken quest]

Hello, does anyone know what is the analogue in the Built-in Render Pipeline for the URP particles lit shader?

In build-in I have this(

[hearty flare]

have you looked for alternate shaders in the dropdown

[broken quest]

I tried to put shaders from the list of mobile shaders and regular ones, in all cases my particles disappear

[hearty flare]

Particles / Standard Surface seems the most relevant

[hearty flare]

You probably need to fix the warning - but the preview being pink might indicate something too

[minor glen]

how do i make my spark vfx change its length depending on the speed?

[minor glen]

got it

i need to add "simple heads and trails"

[slender swallow]

is there any way to make particles not appear on the ui but keep the canvas on screen space

[fluid lagoon]

put the particles behind the UI (Screen Space - Camera)
Or use Screen Space - Overlay and it will always be in front

[hearty flare]

https://help.vertx.xyz/graphics/vfx-graph/experimental-operators

[vagrant tinsel]

Hi there
how can I set the mesh count for "Output particle mesh"
https://docs.unity3d.com/Packages/com.unity.visualeffectgraph@10.2/manual/Context-OutputParticleMesh.html
the docs say there should be some slider in inspector, but I have none

[vagrant tinsel]

nvm, literally was that answer

[dawn juniper]

Hello, my friends. Can you guys help me with «Object Interaction Outline» I have only found UE4 tutorials on this…

[stiff onyx]

im looking for a parameter called "facing" so the sprites in projectiles dont face the camerra. whare can i find that?

without making it itno mesh. i wanna see if i could keep it billboard

[cobalt torrent]

Hi, this may be a silly question and not sure where to ask, but if I wanted to recreate the combat for wizard of legend, would the attacks be prefabs or particles with collisions?

[stiff onyx]

id say if i would make it. prefabs

[undone junco]

Hi all
I’m looking for a way to randomize the texture of an output node (VFX Base Color Map). I have three flipbook textures and I need to choose a different one per particle. I was looking into the Probability Sample node, but it doesn’t seem to have a Texture2D input. Can anyone help?

[inland jasper]

Wondering if anyone could point me to a good example of ambient dust particles in a room

Just some look alive stuff

[scarlet narwhal]

in vfx graph: I'm putting an Add Angle node in the output particle quad context. If I put values in the X and Y angles, the particle rotates correctly. If I put a value in the Z angle, it just rotates around the Y axis. Am I missing something?

[dawn juniper]

Ok, I’ll try

[digital valve]

Does anyone know how i could add grass to a mesh using vfx graph in urp ?

(i use a mesh with a custom shader)

[scarlet narwhal]

I've reduced my problem down to this: if I emit a single particle with a long lifetime, and set it to slowly rotate around an axis, then it works fine around all three axes. If in the Initialize context I set the angle around the X axis to 90, laying the particle flat, then rotating around the X and Y axes still works, but rotating around the Z axis just rotates it around the Y axis but in the opposite direction. Switching between world/local doesn't make a difference.

What is going on?

[scarlet narwhal]

Ah, it's gimabl lock, and VFX graph doesn't have quaternions.

[steep garden]

Guys, I have a canvas, two images and a particle system. All of them rendering in the same layer with ordering 100. Images displayed corretly one behind another according to their hierarchy order. Is there any way to display particles above one image but behind another, same way only controling the hierarchy order? I know it is easy with different layer ordering e.x. 99 for green image, 100 for particles and 101 for red image. But I am curious why I cant control it with hierarchy. Or is any way exists?

[compact zodiac]

hey guys, how do I go about making a UI button glow?

and control the glow

I already have a bloom and it does glow a bit, but I want to be able to control the intensity of the glow

[compact zodiac]

nevermind, I got it working.

[hollow nymph]

For some reason my particle systems are showing over my ui how can I stop this

[small dock]

Hello, is there a site on the code to change everything about a particle with sample code?

I saw the Unity page and some of the variables are hard to understand

I want to set every variable in script to understand em

I know of: https://docs.unity3d.com/ScriptReference/ParticleSystem.html

But it doesn't have good sample code for every last variable

[small dock]

ok I think they have example code there now

[pine plover]

Hello. new guy here. I've spent the last 5 years messing around in the built in Unity particle editor which I've fallen in love with after finding out how incredibly versatile it is and lately I've been having a field day with experimenting with the HDRP distortion effect, which provides so much more possibilities with the blur effects in here. however I feel that now that mst of these particle systems work with some form of shader graph workflow, I have a bit of difficulty to get the desired effect I want. when I look at blurred distortion particles from the side, they are almost perfect with a good amount of blur that sells the visual of a jet exhausting hot gasses. however if I look at it in the same angle as the emission, the blur (assumedly) multiplies into each other which I feel is too much. is there a way to add a threshold when looking in the same angle while still keeping the blur amount as seen from the side? I tried reducing the blur amount which helps looking at it from behind, but then the blur effect almost completely becomes invisible when viewed from the side

I'm pretty sure it's something in the visual effect graph I have to add, but I have no idea which.

[pine plover]

I tried messing around with adding blocks that control the alpha, but alpha only affects the whole particle's opacity, rather than just the amount of blur that needs a certain threshold

[small dock]

This turned out way better than I had hoped. RIOT August said particle effects are tough last night so I coded this today:

https://www.youtube.com/watch?v=17Qi5Pt4KUc&list=PLOQ-J23AJUfSMF9hRejVPyjTc0Wc9JozM&index=2

[hearty flare]

I would try to drive the blur scale based on the view angle (view angle being in relation to the transform the vfx is on)

[pine plover]

what block do I use?

[hearty flare]

No idea, you'd have to do some vector maths I think

[pine plover]

no idea how I'm supposed to do that without some example

[hearty flare]

my VFX graph has glitched graphics so excuse that but

I'm also not sure if there's a better way of getting the camera direction

[pine plover]

dang I can't make sense of that

[hearty flare]

Get the forward direction of the camera in local space and forward, and the dot product will be 1 if they're facing in the same direction, 0 if they're at 90 degrees, and -1 if they're the opposite

you can use that number to drive the blur so that when viewing from angles that are in front or behind you have less blur

[pine plover]

can I make that node graph in the VFX graph of my particle effect?

[hearty flare]

Right-click Create Node?

[pine plover]

I made it into my VFX graph but I still cannot make any sense of it

in what part/block of that graph do I reference the blur?

[hearty flare]

You will need to change the direction transformed by the camera be forward too

you feed it a value you calculate

[pine plover]

man, VC would be handy right now

because I think I'm now doing stuff I don't know about

[warm torrent]

You should check out VFX graph tutorials and documentation to get a feel for how nodes are used to manipulate the particle properties

[past lark]

Could somebody help me with a (hopefully) simple problem. I've got a couple of VFX graph's, however when playing in the editor none of them work when the start event is triggered until I load the VFX Graph window, then they all work fine for the rest of the play session. However, this is the only way I can get any of them to work as expected. Windows player builds also showing this behaviour (though I cannot fully verify as I can't load the graph window ofc).

[coral pollen]

hey guys is there anyway to remove the greenscreen this is a video player component in my camera any help is preciated :))

[minor glen]

i was following this tutorial when i realized i don't have a "set position(shape : mesh)" in vfx graph , the tutorial was in 2020.2 and mine is in 2021.2 .am i missing something?https://www.youtube.com/watch?v=ePbeaYuMNK4

[hearty flare]

https://help.vertx.xyz/graphics/vfx-graph/experimental-operators

[minor glen]

i have it on

[hearty flare]

Ah, you probably need to use the SampleMesh node or one of the other Mesh nodes to get the same job done

You'd have to look at the changelogs to find why they did that

[minor glen]

so they removed it?

damn it

[hearty flare]

I presume so

[prime dome]

how can i make the particles not "cut into" the meshes?

[civic ore]

soft particles

[prime dome]

hmm i'll try that out

right now i added a collider that is a bit higher than the ground

[prisma crown]

Hello! I'm having an issue with a particle system(s) im trying to make. It's basically a bunch of particles set up to orbit, and is currently parented to the character i'm using. I'm trying to make it so the particle system can be placed down anywhere in the world from that character. However when i tried to set the simulation space accordingly and tried to test it out, as the character moved away the particle system's orbit began to break. instead of it rotating in a fixed circle the whole particle system began to orbit instead of just the rings (video included in the demonstration). Anyone know how I could fix this?

ahh video didnt send hold onm

[pseudo monolith]

Hey guys I have a small problem. I want to create a smoke effect to rocket using VFX Graph (this is my first time when I am using it). My rocket is pretty fast so I want rocket just to spawn some of particles then fly away. Particles itself should just fly up. Just it. What I accomplished is smoke flying with rocket which is causing in big speed just not showing particles (but on lower speed particles just follow rocket). What should I do?

[eternal idol]

Does lifetime work at all for the output particle mesh node? It seems to be completely ignoring it.

I'm trying to get some spheres to grow and then "pop" like bubbles after a certain amount of time.

[surreal elk]

Seems like you are using Local position mode. You can try to switch to World mode, then use Position Binder to catch position of the rocket.

[pseudo monolith]

Okey.... Thanks, but what formula in Graph Bind Position?

[surreal elk]

Select your vfx in Scene, then Add Component "VFX Property Binder".

[delicate horizon]

How can I output to a render texture from a shader, without using a camera? Or, in vfx graph, sample a shader directly, instead of a texture?

@ me..

[surreal elk]

1. In Project window, Create > Shader > Custom Render Texture. You can write your shader code here.
2. Create a new material and assign your shader to it, so you can adjust your exposed attributes.
3. Create > Custom Render Texture. Assign the material you created.

Btw, you can use "Sample graphic buffer" Node in Unity 2021

[delicate horizon]

Ohh 🤯 right.. how did I forget the sample graphics buffer lol ty xD

By the way, I was getting errors when trying to make a custom shader graph node in the newest stable unity release, was it somehow omitted?

[eternal idol]

Can anyone tell me how to get Set Color Over Life to work in VFX Graph while using a custom shader? What does the shader need in it? I have tried multiplying the Sample Texture 2D and the Vertex Color node and then putting the result on the Base Color. It just makes the particle disappear when set to transparent and it gives me a black square when set to opaque. Basically the same results whether it is lit or unlit. If I drag straight from the texture node to the base color the particle shows up correctly but does not read the color change over time.

Using the default "None" shader works and allows me to change the color over time but I need to be able to use a custom shader.

[primal lotus]

Does just using vert color for a test not produce expected results either?

[eternal idol]

Going straight from Vertex Color to the Base Color gives me a white box.

[slate sable]

You can just expose properties in your shader graph and they should show up below the field where you put the shader graph. Then you can just plug in age over life (with sample gradient, if you exposed color) to drive the values by age.

[eternal idol]

Here is my current shader graph.

Here is my VFX Graph.

For some reason with these setting the visual effect object does not show anything at all.

I can have the default particles show up as whatever color I choose if I go straight from the first multiply node to the base color and use the alpha of the Sample Texture 2D Node but then the color over life does nothing.

It's strange because this is the exact setup that I see coming from a few different tutorials and it seems to work for them just fine.

[surreal elk]

In VFX graph, use the node "get color" and link to the color (the one you exposed from shader graph).

In shader graph, I think you can link the color to Base Color directly without Vertex Color Node.

[slate sable]

This is the Color property you are exposing. If you want a color over life you can take the Age over life node, connect the output of it to Sample gradient and connect that to your Color

[eternal idol]

@surreal elk @slate sable Thanks for the help. Both methods seem to be working great.

[slow galleon]

so I changed the color of a particle to orange but it stay white on the editor..? plz help

[clear spruce]

Maybe the brightness of the color is too high

[clear spruce]

Maybe the brightness of the color is too high

[slow galleon]

idk..

no matter what color I chose it stay white

unless I chose black then it become invisible

[clear spruce]

Oh so its not even hdr color

What happens if you disable post processing?

Ig bloom could possibly make colors whiteish

[slow galleon]

where can I find post processing?

[clear spruce]

Usually bright colors tend to go towards white and then the bloom indicates the color but if you dont even use hdr color there, it may not be it

[clear spruce]

Have you added post processing to your scene?

[slow galleon]

I don't think I did because idk what is post processing

[clear spruce]

It just seems like you have some glow on the particle stuff but does it just look like?

[slow galleon]

wait I came back to scene view and now it's orange, I was looking inside something else which I'm not sure what it was lol

I think it was player scene idk

a scene that only show the player stuff

[clear spruce]

In case youre interested, post processing is process of adding fullscreen effects on the game that makes the result look nicer such color grading, vignette, glow (like the lazer swords) etc.

[slow galleon]

I think I'm using post processing

I want to make a rocket flame

Ok I think it's like I want, but now I want the flame to only occur when the player press W or Up arrow key, how can I achieve that?

I think using tag is the right direction but I'm still not sure how to make it work

I'm gona head to code-beginner

[hidden otter]

Hello, might anyone know why VFX Graph is not updating when I make changes to the various nodes and blocks? Auto is set, however I almost always have to press Compile or Save for it to update in my Scene view.

I'm using v2020.3.27 in URP

[zinc wagon]

hello

Is there a particle setting that can stop your particles from going through the ground?

[primal lotus]

If the ground is flat theses a collision module

[green valve]

Hey, I'm working on bullet impact in my 2d topdown shooter. I'd like to make the particles to be sort of lines bursting from the hit place. How can I make some good-looking lines?

[safe helm]

I don't know why it does that but if you close the graph and open it again it works normally, at least it does for me.

[signal lily]

If you are using collisions, unity hates super thin collision boxes for moving objects.
You can make sure you have set collision quality to high but other than that there isn't much you can do other than increase the collision box on where it's going through and make it thiccer.

Thin colliders like mesh or plane/quad colliders don't work very well and Ill recommend optimising your particles to a point you don't need collisions.
There has been scenarios that you don't even need collisions to get the same effect.

[signal lily]

Yeah that happens to me too. I enable and disable a block for it to change.

[past pine]

Hi, i'm using a trailrenderer with a custom shader, but at the corners the trail gets jagged up, can anyone give tips how to fix it or is it trail renderers fault?

Also played with most of the trail renderer settings, didn't fix a thing

Also hope this is the right thread :d

[signal lily]

This happens with the particle system too. I haven't found a fix too. +1 bump

[warm torrent]

Two main things to reduce this is to increase Min Vertex Distance and to avoid jittery or sharp movements

In some situations adding more than 0 corner vertices along with increasing min vertex distance even more can help, but usually it doesn't

The best thing you can do is to mitigate it
It can't be fully eliminated without implementing some kind of vertex smoothing into the trail renderer itself

[past pine]

Thanks for answering, I need sharp movements and messing with min vertex distance doesn't give the desired result

But do you know if there some solution already exists with vertex smoothing?

[warm torrent]

I found an asset on the store called "Ara Trails" which aims to fix this issue, but I can't speak for how good/supported/performant it is

[atomic magnet]

Hey, so I have an issue. I'm working on a 2D game, and in order to use particles properly, the game object they are on needs to be rotated -90 x.... however, I am having my particle do some movement and fly towards a specified point.. the best way I found to do this is transform.LookAt() and RigidBody2D.AddRelativeForce() to move it. This allows me to specify a moving target and have the particle gameObject always fly towards it... only problem is, when my game object looks at the target, its x rotation changes and the particles coming off of it are now flying towards the camera instead of up (so it looks like that arent rising at all)

Whats the best way to approach solving this problem?

https://gfycat.com/definitewigglykawala

particles at the end of this gif

void FollowTargetWithRotation(Vector2 target, float distanceToStop, float speed)
    {
        bool direction = (transform.position.x - target.x < 0);
        if (Vector3.Distance(transform.position, target) > distanceToStop)
        {
            transform.LookAt(target);
            rb.AddRelativeForce((direction?Vector3.right:Vector3.left) * speed, ForceMode2D.Force);
        }
    }```

[warm torrent]

LookAt lets you define an "up axis", which if facing depthwise towards the camera could keep the rotation flat when it turns
Your other options are to
-Code the motion so that it moves in world space and doesn't need LookAt
-Design the particle system so that it works correctly regardless of its direction
-Move the particle system to a child object that uses a script to rotate itself to always face the camera's direction

[atomic magnet]

the 2nd there would be nice, but I looked through all the settings in the particle system and couldnt find anything that'd accomplish that

LookAt has an overload for Vector3.WorldUp
hows that work exactly? like, if I did (0,0,1) would that make it face the target with the z-axis facing the target?

[warm torrent]

On a second thought that alone might not fix the rotation problem
If worldUp is empty, it will attempt to point its own up axis towards world Y when rotating

LookAt is usually meant to be used in 3D space and the worldUp is meant to prevent uncontrollable tilting of the object that's doing the looking

[atomic magnet]

yea, I figured as much

I know I could do this with transform.translate and Vector2.MoveTowards, but I want to try using Rigidbody2D and add Force, becuase its just less math intensive

[zinc wagon]

oh ok

thanks though

[misty shell]

Hi guys, I'm creating a Smoke particle system using the Shader Graph however when I add a normal map it gives the particle a green tinge..

Without a normal map:

Normal map enabled but no normal map provided:

Anyone know what could be going on?

Using HDRP

[past owl]

I tryed to clone Gojo Satoru Skill

How do you find it

[misty shell]

Fixed it, only seemed to do it near the edge of the camera, and setting the colour removes it anyway (which it didn't before..)

[misty shell]

https://www.youtube.com/watch?v=R6D1b7zZHHA

[spare raptor]

looping in particle system is unchecked still the particle system is looping. Why?

now my impact effect looks like it is burning. It were meant to be sparks

[warm torrent]

Not looping means not looping
You could be triggering it too much in code, or it could be a child particle of a looping particle system

[spare raptor]

ty

[warm torrent]

Or it could have a repeating burst emission, but that's unlikely to happen unexpectedly

[hidden otter]

thanks, i just hit save for it to update. it’s slow but it works.

[tardy temple]

How can I make a trail look pixelated?

[exotic ferry]

uh how do i fix this?

upgraded from urp to hdrp and everytime i save my graph this keeps popping up

[exotic ferry]

nvm just reinstalled hdrp

[stable panther]

How can I get the speed of the game obejct in vfx graph?

[prime dome]

Why are my particles so black i put them to max white?

[spare bolt]

I have no idea what caused this

I dont know if this a code problem or particles problem

[hard dome]

I need help, I am trying to export this to unity but when I export the model there is no textures. I have been working on this for hours, someone please help!!

[spare bolt]

extract materials in unity

[hard dome]

I tried that and it didnt work

[spare bolt]

well wait do you have the individual texture files

because if so you can just assemble a material in unity with them

[supple elbow]

Hello ! I'm using the particle system, which I animate in order to create a slash attack vfx for one of my projects.
I have an issue with that : I made the attack animation appears in front of my character but when I move and attack the particles go all other the place, staying where they are initially played and making it look weird.
I'd like them to always act the same way as when I'm playing the animation without moving. I want to lock the particles so that they move with the position the animation is played at.

It's probably something very simple to do but I don't find it, so I'd be glad if anyone can help me with that 🙂
(Sorry if it's not very clear, english isn't my native language ^^')

[next pendant]

Anytime I move the color of a gradient slot in this graph near black it just defaults to mid-dark grey anyone know why?

[kind aspen]

Can you explain the problem further ?

[sly forum]

Hello guys. I have a little problem with Unity Editor. Particle system problem.

For example, I have a regular particle system.

This one is with standard settings, but I also tried with my own settings for my game.

But it is not important. Particles are not visible in the game (it doesn't matter if the loop is enabled or not)

[proper forum]

Having a strange effect. My particles seem to fade and turn completely transparent when the camera looks down at them

[queen nymph]

Hello, I'm having an issue with my particle not showing up on the screen for my game. I have programmed it so that if a certain object appears, to activate/play the particle, yet it seems to not do that. I'm pretty sure the code is intact and fine, but it may be a layering issue or something. I have tried changing the layering at the top right yet it does nothing, there is no other layer options to choose towards the bottom. Not experienced with particles what so ever so this is a new experience for me, but I was following guides pretty well, yet running into issues.

[warm torrent]

Are the particle system and frag script references supposed to be unassigned?

[broken pollen]

I’m making a player character for a 3D platformer, and I’m trying to find a way to have an indicator of where they’ll land when they jump - either as a shadow or just a sprite underneath them. Would anyone be able to give me some advice on how to approach this?

[warm torrent]

BiRP has a projector that can do blob shadows
https://docs.unity3d.com/Manual/class-Projector.html
Other rendering pipelines have decal projectors for a similar purpose

[broken pollen]

how can i use the built-in pipeline?

[warm torrent]

What do you mean how?
Chances are you're using it already

[broken pollen]

idk if that's the problem then but i can't add the projector prefabs to my scene

[warm torrent]

Prefabs?

You've lost me

[warm torrent]

I have not used the standard assets and I don't know if they even work properly in current year

[broken pollen]

ah ok

[broken pollen]

this documentation says that you have to use the shaders found in standard assets for your projector material, is that true?

[warm torrent]

I guess you need those shaders then
Anyway, I can't think of a reason why you would not be able to add the example prefabs to your scene
Even if they were unsupported somehow you should at least be able to get the transforms

[broken pollen]

i've managed to fix the issue i was having and everything works now

thanks for pointing me in the right direction!

[warm torrent]

So, what was the issue?

[queen nymph]

Yeah, they get assigned when the game starts.

[golden zenith]

Would anyone know if i can export Blender simulations to unity to use as an effect

like smoke or explosions and such

[midnight grove]

No, Unity uses an entirely different system. You would have to remake your effects with the particle system or VFX graph.

[golden zenith]

allright

thanks

[timid carbon]

Hi, I have this wierd effect in my scene that particles only get rendered when they are in front of an object. This only happens when i am using a skybox though, when i swich to solid color everything workd. Does anyone know whats going on here and how to fix it?

[clear spruce]

Seems like depth test mode is reversed

[timid carbon]

how do I verse it?

un reverse?

[clear spruce]

Its usually shader related. Is it particle system or vfx graph?

[timid carbon]

Its a Particle system

[clear spruce]

What shader is it using?

[timid carbon]

I'm not sure, but its an explosion from the default unity particle pack maybe you know

[clear spruce]

I dont really know. I still think it is shader related issue

[timid carbon]

any idea on how to fix it?

[clear spruce]

Idont really know. Id probably try some other shader and see if it works

[scenic torrent]

How do you "reverse dampen" a particle - I want it to increase speed over its lifetime, not slow down

The particles emit from a circle going negative - inwards, so I can't use Force because Force doesnt care about the original direction

Its easy to slow them down over lifetime, but I cant seem to find a module to speed them up over lifetime

[heady drift]

Is there a way to make a particle ONLY SIMULATE its rate over distance? The particle works fine but I don't want it to move.

[neat merlin]

hi hi does anyone know how to make particles start position another sprite?

i tried making it a child but the particles still follow the player around

[clear spruce]

I think thats because youre running out of particles to spawn. There should be some max particle amount/capacity somewhere

If the max amount of particles is set to 1000 and you already have 1000 particles floating around, the particle system/vfx graph will not spawn new particles and instead just waits until some of the particles are dead before spawns anything

[true mountain]

Hey, for Visual Effects Graph using the Particle Point output node.

• Is it more performant to use this rather than using the normal quad output with a particle texture and a super small size for a large number of particles?

• Is there anyway to change/randomize their size? Im using the screen space size node, but dont see much difference

[slate sable]

I think the Point output particles are rendering as single pixels so with higher resolutions the effects might not look as dense.
It probably is more performant since it doesn't sample any texture at all

[strange stag]

Im using Unity 2021.2 and trying to spawn particles using Events.

            var ParticleEvent = Particles.CreateVFXEventAttribute(); 
            ParticleEvent.SetUint("spawnCount",10); 
            ParticleEvent.SetVector3("position",_Transform.position+Vector3.up); 
            Particles.SendEvent("Spawn", ParticleEvent);

But it only spawns one particle. it seems to ignore "spawnCount". What am i doing wrong?

[strange stag]

Anyone?

[strange stag]

If i do:

ParticleEvent.SetUint("spawnCount",10); 
print(ParticleEvent.HasUint("spawnCount"));

It returns false. Whats going on?!

OK....

ParticleEvent.SetFloat("spawnCount",10f); 

This works for whatever reason.....

[neon summit]

Is there a way to have a custom spawn shape for particles? Like a star, heart, etc.?

In VFX Graph

Alright I just found out that point caches exist

[primal lotus]

You can also use images

[next pendant]

How do I make particles appear in the same place/rotation for the local player and the rest of the world? ex: I have a slashing vfx and its playing on the right shoulder in the players view but from a scene view it plays on the players left shoulder

[atomic magnet]

hey Im not really sure where to ask about this, and im having trouble finding anything about it online, but I want to give my 2d pixel art character a scarf with physics. whats the best way to do this and have it look pixelated like the rest of the art?

[cobalt plover]

What particle setting makes particles not appear larger the farther I am away?

[inner linden]

Hello,
Indeed, spawnCount is a float and it can be counter intuitive.
The reason behind this behavior comes from the spawn context, a constant rate block is implemented this way:
spawnCount += deltaTime * rate;
For instance, we can spawn "half" a particle per frame (deltaTime can be 0.05s with a rate of 10)
At initialize stage, since the first context is simply "consuming" the integer part of spawnCount, the fractional part is always 0 but the storage type is still a floating point.
You can take a look at this post for some usage of the direct link: https://forum.unity.com/threads/new-feature-direct-link.1137253/

[inner linden]

👍 The Pixel Output are always rendered with 1 pixel size.
With a Quad output, you can actually get rid off the texture sampling using a ShaderGraph (The Use Base Color Map settings is only available on lit output).
The main difference of performance between a vertex and a quad would be the amount of vertices processed and the rasterizer state.
Side note, you can use quad output and the Subpixel Anti-Aliasing block to force particles to be at least one pixel of the screen : https://docs.unity3d.com/Packages/com.unity.visualeffectgraph@12.1/manual/Block-SubpixelAntiAliasing.html

[atomic magnet]

this is what I'm trying to accomplish, but cannot find any sort of guide anywhere on it
the cape effect specifically

[gray cedar]

my particle system is not working

[cobalt plover]

Bro u gotta like send screenshots of every setting

Like that doesn’t tell us anything

[gray cedar]

i fixed it

[cobalt plover]

Ayo can particles be 3D objects and not just flat

I want my gun to have bullet casings eject from it but if I can I want it to be a full thing so from the side you see the whole casing

And from the back u see the back of the casing

[clear spruce]

Both vfx graph and particle system supports that. Which one you’re using?

Actually… you could just google

[cobalt plover]

I see how to make 2 sided but now how to make a particle look like a 3D object

I’m just trying to use the default particle system

I upload to vrchat so Idk if vfx graphs are accepted

[clear spruce]

Not ”look like 3d”. You can literally use 3d meshes as particles

[cobalt plover]

Oh ok I’m sure if I search those words I’ll find a tutorial

I can’t find tutorials if I don’t know verbages for things

[weary dawn]

New to this discord! Does anyone here know how to contain particle Fx within a set boundary? I can't seem to keep some things from wandering off into the distance...

Is there some sort of boundary section I'm missing?

[weary dawn]

I'm trying to contain these bugs around this mini

[clear spruce]

Take a look at this firefly tutorial https://youtu.be/41hAlLk8AiQ

[weary dawn]

Thanks!

Looks like “limit velocity over lifetime” is what I was looking for.

[clear spruce]

they also used wind zones there

[weary dawn]

Yeah - between those two things I should be able to get it under control. Noise is difficult to control.

[clear spruce]

Its weird how limited the particle system seems to be but yet you can still do lot of cool stuffs with it if you are good at using it which i don’t

[weary dawn]

The newer particle systems are much more versatile but I’m stuck with the good ole 2019 non HDRP one for my purposes.

[prime dome]

Is there any way to access the min/max particle size for particle systems with rendering type mesh? I want the mesh particles to be of consistent size regardless of camera distance

[stray talon]

Is there any way to have particle systems preserve their state through having their gameobject or a parent gameobject being disabled and re-enabled later on?

[rigid linden]

Hey there ! Im working on some vfx and I dont know why when I'm moving the black color cursor, the alpha is changing and so I cant use black.

Any idea why its doing it and how can I add black without changing alpha ?

[wispy roost]

lots of questions in here, I'm going to add mine lol.

I have a rock particle system attached to my shovel. There's a trigger box over the wheelbarrow so that the rocks only start falling when they're inside that trigger box (I'm working in a separate project and didn't update my particles so that's why they're pink blocks, but I think it shows what I'm talking about a little more clearly).

My issue is, the particle system flickers when it's not in the trigger box which I'm assuming is from it checking to see if it's in the box. Is there anything I can do so it stops flickering?

[rigid linden]

Could be a stupid question but, did you check the order of your system ? Dont you spawn the particle and then check if you're in the triggerbox ?

[wispy roost]

I'm still pretty new to unity (I'm more well versed in Unreal) but I just made a particle system component so I'm not sure... I didn't code anything specifically but is there a way to get into the code generated by that component?

[safe helm]

Are you using additive particles? I believe black means transparent in additive. You'll have to use Alpha mode instead to get blacks.

[little glacier]

Hello, I don't know if it's the right place to ask this but I was wondering how to achieve something like this for ability indicators (this image is from Wildstar a dead mmo rip)

[warm torrent]

These are usually decal projectors, but a similar effect could be achieved by rendering a sprite on the ground with controlled depth sorting and masking

[rigid linden]

Nope it was a unity bug, got it ! Thanks anyway for your response !

[plush pond]

Hello everyone I need a little help with shape arc circle position. The problem is I cant get it to rotate properly. Position and angle are all good but it doesnt rotate the emitter if I set the angle via custom attribute and if I set the angle manually it works as expected. Am I doing something wrong?

[hallow nymph]

(hopefully) quick question i'm sure has been asked 1000x, is there a way to spawn a particle at a specific location and have it say their until killed?

working on a sorta "burning rubber" type thing, and don't really need the smoke to follow the vehicle lel

[fluid lagoon]

You need to simulate the particle in world space instead of local space

Most of the nodes etc have an option for that. As far as making it not move, just don't use anything that sets the position after the initial

[somber musk]

Hello i want to make clouds that will move. I have plane and i want to make some clouds to go around it so it looks like plane is flying. Ideally using unity particle system.

[midnight yacht]

i sliced up my particle spritesheet normally but in the particle system the particles appear half chopped up and half combined with adjacent particles in the sheet?

i dont know the reason

[split laurel]

What could be causing some particles to shoot off like that?

[safe helm]

There's a node for rotating, and you can change the position in update.

[azure delta]

is there any easy fix to make the death sub emitters to face the direction of the normal that it is colliding with? if not ill have to do some extra scripting rather than doing it this way

[prime dome]

Could be an animator / blend tree using speed and direction as input.

[atomic magnet]

never messed with blend trees

[next pendant]

How do people get this black section on their slash vfx? I cant really wrap my head around it since the alpha makes all the black colored mesh parts transparent

same thing here

[midnight yacht]

you make an unlit particle shader and set the color of that thing to black i guess

or not particle but

yeah

🗿

[next pendant]

like make a separate shader & system and overlap them or? thats what I did here and got something close-ish

[clear spruce]

Why would black become transparent? If thats the case ig youre doing something wrong

[next pendant]

I was wrong about that part actually yeah

I guess I just overlap two systems one black and one the other color ?

[twin basin]

When turning on Animated Materials in the Scene view, and them being animated, the quality of the textures animated is significantly degraded. Is there a switch somewhere to prevent this happening?

[somber musk]

Hello. What is best way of making visualization of air. I think i could use particles to it. But i dont know how anyone help?

[split laurel]

You can also use smoothstep to create another mask

[prime dome]

Hello,
Hope I m using the right channel for my question. Sorry if I m wrong but I m new to the server. 🙂
Basically I want to reproduce the effect of this video: https://youtu.be/z9qxMBeVWlg?t=138
I have a circle with many little line pieces and then I turn that off to activate a bigger one. But now I have some struggles with following two problems:
How can I create an image/circle line which is dynamically scaleable so I don't need to redo it all the time when I m changing the range?
And when I m scaling the semi transparent picture with the white blur outline how can I scale it bigger without increasing the blur outline space?`
Thx in advance! 😄

[warm torrent]

You could post a picture of the effect you've got so far
Didn't exactly specify which effect you're speaking of, a lot of different "line circles" in the video

[viral copper]

Hey, I'm sure I'm being dumb, but how do I make particles generated fall in world space once spawned and leave local space?

[viral copper]

Yeah, nope, it was a bit arcane, but I did it ^^

[hard compass]

hi, i'm new to vfx-related stuff and was wondering what's the proper way to instantiate a vfx object at a specific position?
for example i have a "bullet-destruction" burst effect that i want to play at the point of contact when a bullet collides with something

[warm torrent]

I'm quite sure they can be instantiated like any old particle effect (or pooled so you move them where needed and play the effect)
There's also a big blog post about optimizing them so all the particle bursts can exist efficiently inside one VFX graph
https://blog.unity.com/technology/upgrading-vfx-in-the-fps-sample-with-visual-effect-graph

[hard compass]

thanks \o

[prime dome]

So basically I have two problems:
I want to scale a dashed circle bigger but I dont want thicker line parts I just want more line parts with the same size (Pic 1).
Second problem during the scale I want a circle with a blur effect to scale up inside of the dashed circle but the blur thickness should stay constant and also not get thicker(Pic 2)

[warm torrent]

You can't really do the dashed circle with textures alone, you need some type of line or trail renderer
Or have a separate texture for each possible circle size

[prime dome]

Any preferences trail or line renderer?

[warm torrent]

I would personally try to make the effect with particle trails in local space, but I'm more familiar with particles
Line renderer would be my second option

There's also the "Shapes" asset which would be perfect, if you're made of money

If you're familiar with shaders / shader graph you might be able to make the effect with polar coordinate UVs and some maths

[prime dome]

Okay I will try things out thank you for the help mate 🙂 !

[last copper]

Hello, got a little problem regarding my trail renderer and particle components. You can see them disappear and appear as the player gets further or closer. Does anyone have any idea why this might happen?

[worldly fractal]

I am trying to figure out if i need to make a system to pool the particle system (for 2021 version) or the particles it creates, what do people usually do for these? does the current particle system automatically pool the generated particles?

the general tutorials dont explain this and mostly explain functionality so i am left somewhat confused on that technicality

[clear spruce]

why you need to know that?

so you're concerned about the performance of particle system right? highly doubt there's anything you can do to optimize it, it's already pretty optimized by unity

[worldly fractal]

I am concerned with anything spawning multiples of anything xD

but yea from some even more research and asking around i was told i dont have to bother with that since its optimized

thank you a lot for your answer

[clear spruce]

I don't think theres anything that needs to be pooled. for sure they don't instantiate one gameobject per every particle and then destroy them. those particles are most likely drawn using something like Graphics.DrawMeshInstanced (GPU instancing)

[prisma crown]

Is there a way to move the collider to the tip of the particles?

[azure delta]

having a black color is not the same as having trasparency. the transparency when output as color looks black/white, but when output as transparency its as the name says, transparent

[azure delta]

^

[gentle hearth]

Hello guys, what could be wrong with my particle system, I've made it tile and loop in the shader editor, however it does not when I place it in the game

This moves from left to right over time

But if I place it in my particle system, it's stationary

This does not move from left to right

[prime dome]

Do you think it would be possible to make ash clouds such as this on the particle system?

[plucky coyote]

prob

try to play around with it

[prime dome]

um

i think so

[primal lotus]

Probably using a combination of mesh & particles though use case makes all the difference

[small bridge]

Is it not possible to expose Gradient in Shader Graph?

[small bridge]

What does the gradient need to be called for "Set Color over Life" to properly change the color

[primal lotus]

Not at this time

[gray wing]

is there a way to view multiple particle systems at the same time in the editor?

[primal lotus]

There's some kind of particle system editor that you can I think. Last I tried it though the window was flake in my project so it rarely worked

[warm torrent]

Selecting two particle systems in a scene allows them to play at the same time in editor

[prime dome]

ive done like 2 particles but how do i make it so the particles come out the other side?

nvm

[native perch]

Why are my particle in a line position instead of circle ?

[fluid lagoon]

could it be that we're seeing the circle from edge-on?

[native perch]

@fluid lagoon I’m not sure, where would I check that ?

[fluid lagoon]

look at it in scene view and rotate the view maybe?

[wicked yew]

Hello I'm not sure how to explained it but i think there is an approximation in the mouvement of the particle in vfx graph when using total time right ? i set the position of the particle in update so they are doing a circle. thing is that it give me strip inside the circle, at the end i have a disk but if i'm speeding the vfx with VFX control, now i have a circle. I assume it have to do with the update thing but can't find anything on internet

It's lagging a bit because of the capture but we can see the difference when changing the speed

I think it's because i'm using particle strip but not sure

[slate glen]

Hi, does anyone know how to prevent the SDF Bake Tool from scaling my mesh? I have two meshes, a default mesh and a mesh with a protrusion. The SDF bake tool scales my second mesh down in proportion to the length of the protrusion, which makes the resulting SDF out of scale with the other SDF

[slate glen]

Solution: Make sure the Box Center and Desired Box Size are the same

[outer moth]

any ideas why its blurry?

hi guys, im loading a texture from png at runtime, converting to sprite, but when i convert to sprite it seems blurry, like it has bilinear filtering applied, but applying point is not fixing it, this is what i do:

hmm cant paste code

[slate glen]

You guessed my guess: Filtering. If that's not it, maybe there's something going on with your camera settings

[slate glen]

Screenshotting your code and visual result would help

[worldly fractal]

i have made a projectile with the particle system and im trying to understand how the particle system works with it

i am facing 2 issues i ponder if i have to fix by code or whatnot

my simulation space is in world, and when it collides im testing out bounce and whatnot, but for some reason upon collision the bouncing seems wrong (x is the collision point) as you can see by the weird angle of the material trail

i expected the trail to go something like that

(same for the bounce)

but the trail goes like that instead for some reason upon collision, why?

[native perch]

Is there an equivalent to the Twirl node for the VFX graph ?

[viral hamlet]

Is there a good way to make a for-loop in vfx graph?

[viral hamlet]

not afaik, you have to roll your own

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

just implement the code in vfx graph

[outer moth]

@slate glen thanks, yes it was actually that Sprite.create() was making mipmaps and must have been using them, once i turned that off and applied point filter, looked fine!..

[true mountain]

Hey, could anyone point me in the right direction for this. I need the "stream" to not be broken up when the fire extinguisher is moved quickly around

[warm torrent]

You could try a "ribbon trail" for the particles

So a trail will collect all of them like a chain, hiding the gaps

Also just making the particles wider will reduce the gaps

Another option would be to try emission over distance, which emits more when moved as to not have gaps resulting from motion, but that costs a lot of particles and doesn't help with rotations

[true mountain]

Thanks for the advice 🙌
Ill fiddle around with trails some more

[warm torrent]

Study the manual, guides and tutorials?

[native perch]

alright ty

when I use the hdrp unlit material on my particle system it glows like i want, but the color over lifetime module doesnt work anymore. When I use the default particle material, the color overlifetime module works but its almost doesnt glow. Any suggestions ?

[vestal solar]

Check in the samples included with the HDRP package (in package manager), there is a particles shader samples that should kind of work woth the legacy particle system

But as a general note, the legacy particle are not supported with HDRP, and you should use VFX graph

[upper torrent]

How would I go about randomizing VFX Graph values such as lifetime, to make them unique for every instance in the hierarchy? Ie. I want smoke out of chimneys using the same vfx graph to be randomized

[coral tinsel]

there is a Random Number node

Somehow when I add a Spawn particle system with a constant rate connected to a GPUEvent, nothing spawns anymore. When I remove the GPUEvent it works fine, but then it spawns all the time

[upper torrent]

Thanks! I didn't know I could set them to per particle strip instead of per particle 🙂

[novel mica]

guys i just wanna ask is there any ways to convert a shader script to a shader graph?

[clear spruce]

More #archived-shaders question (I don’t know any way other than manually recreating the shader)

[novel mica]

ok ty

[quartz field]

Trying to make a looping particle system that every time it ends it loops and has a start delay

[keen knoll]

hello, I want to make a "2D endless space runner", so I want to make a stars particle system, how to make it?

[warm torrent]

The main part would be to use a line or rectangle shape for the emission

[keen knoll]

how can I archieve that?

[viral hamlet]

1. consistently emit particles at some random positions within the sky

• randomized lifetime, so they disappear over time
• etc..

2. update the particles' position during the update phase: positon += speed * direction (actually depends on whether the player is moving - if the player moves in some direction you don't need to update the particles' position to achieve the effect of them moving - if your player is static in your endless runner and "the world moves" you need to update the particles' position

I need to pass a 2d mask which is generated and updated on the cpu to a vfx graph - there a two options:

1. store the mask in a single channel 2d texture
2. store the mask in a graphics buffer
   which approach is generally more efficient?

[prime dome]

I have a particle system that looks like this, is there a way i could make them spawn less (I mean thats easy) but instead if one spawns then spawn a few more around it like a cloud/group of them?

i want to create a more "foggy" effect if anyone understands what i mean with that 😂

Oh i got it, what i needed was sub emitters

[devout steppe]

            ParticleSystem ps = cube.TestBulletObject.gameObject.GetComponentInChildren<ParticleSystem>();
            ps.Play();

why the particles system is not playing

[vernal glacier]

Hello there, I have an issue with a particle system. I have the following code:

{
    public ParticleSystem _drool;
    private void OnTriggerEnter2D(Collider2D other)
    {
        Debug.Log("Spla");
        if (other.gameObject.tag == "Player")
        {
            _drool.Play();
        }
    }
    private void OnTriggerStay2D(Collider2D other)
    {
        if (other.gameObject.tag == "Player")
        {
            _drool.Play();
        }
        
    }
    private void OnTriggerExit2D(Collider2D other)
    {
        if (other.gameObject.tag == "Player")
        {
            _drool.Stop();
        }
    }
}```

The detection works fine but for some reason the particle does not play. But when I check Play on awake and I then enter then leave the Zone, it works just fine. Any help would be very appreciated ❤️

[clear spruce]

What is the point of having both OnTriggerEnter and OnTriggerStay?

[vernal glacier]

I was experimenting tbh ^^

[clear spruce]

I think you’re currently telling it to play every frame so it just restarts again and again

Documentation didnt really tell anything about that but it may be that it restarts every time you call play

[vernal glacier]

Yep it was that actually

Thank you 🙂

[clear spruce]

Np

[vernal glacier]

Thought I checked that already so I'm a bit mad with myself rn xD

[prime ginkgo]

made it stand stiill but now it does this after i turn it to world

Before:

after:

[old mango]

Is there any way to change the shader used by flare assets? It looks like it uses a multiply shader, but I would like to change it to use alpha blending. I am trying to make a retro lens flare effect from the 90s which would originally have just been 2d billboarded sprites, no multiply blending there.

[pine needle]

What would be an easy way to say how you did this? Obviously not just a particle emitter

[sterile mirage]

no

[sterile mirage]

no

[old mango]

Oof. Was hoping not to hear that. Thanks mate

[sterile mirage]

sorry

i was just saying nonesense

i was joking

so i dont realy know

[lilac kite]

Hey guys, Any1 able to help me solve this issue where my particle won't render if i look toward the sky?

[novel mica]

guys how can i make an effect that particle will come together and form the appearance of a certain game objects, color doesnt matter

[cobalt scarab]

The default particle has custom mesh emitter which can be used to shape particles. Not familiar with new vfx.

[safe helm]

In VFX Graph you can use lots of ways to make the particles in a shape of an object, use sample mesh, SDF or point cache to do that. A and to make the particles change from position to another, take a look at this video, it's about blending between colors but you can use the same concept for position
https://www.youtube.com/watch?v=pDayqvyE7VY

[novel mica]

thx:)

[viral hamlet]

https://streamable.com/w8plte something like this?

[novel mica]

i found a solution, thank you

[pulsar galleon]

Hello all, I'm dipping my toes in the realm of particles and vfx, and for a game I'm making, I'd like to try my hand at item effects akin to Risk of Rain 2. Would anyone know of any resources I could use to get started? Good tutorials, a good platform, etc? Ty in advance!
(Rough example imagebelow, best I could find lol sorry)
https://gameplay.tips/uploads/posts/2020-08/1597264898_3.jpg

[half shadow]

hello, i am new and im trying to learn how to make vfx. I have made a cool flaming sword effect, but when i click play it doesnt render ><

it looks cool in the scene, but when i try to play the game. it disappears

[wise vigil]

how can I have a png as the image of a particle

[pulsar galleon]

@wise vigil should be in the material section of the particle effects object

that or renderer

[safe helm]

you can sample a 2D texture in VFX Graph. Take a look at this video
https://youtu.be/hXjNC8pNOTE?t=6422

[warm aspen]

Hey there! I need help installing this preview: https://www.youtube.com/watch?v=rqMcPZoEc3U

I want to see how they made the table VFX

[clear spruce]

Can you provide more information of how you tried to do that and what problems you faced?

[warm aspen]

Thank you for answering. The problem is that I can't find a download link

[safe helm]

check the video description!

[warm aspen]

I did and it lead me to a"page not found" page

[safe helm]

works for me, here is the link for the project https://github.com/Unity-Technologies/SpaceshipDemo

[warm aspen]

Wow. Thank you 🙏 🙏

[safe helm]

no problem

[warm aspen]

Yeah I definitely clicked the wrong link

[safe helm]

all good

[sharp latch]

https://cdn.discordapp.com/attachments/602917015883350041/953422489986404372/2022031516594801-F1C11A22FAEE3B82F21B330E1B786A39.mp4
How would I go about recreating the little flame trail things on this sword?

[half solar]

Hi all, does anyone know whats the structure of .pCache files. Is it
x, y, z coordinates on one line or
x
y
z

i'm trying either way in shadergraph and I'm not getting anything and I don't get why

[broken quest]

Hello, is there any way to optimize partkills other than playing them behind the game loading screen so that they don't lag on first launch.

Or maybe, if I play particles on one of the scenes, when loading another scene, they will also need to be played during loading, or it will somehow cache from the previous scene. In general, is it necessary to play the particles exactly on the scene in which they will be used in the future

and in general what should I play, I have 10 particle systems in the object, they are not prefabs

I took this object for the sake of the test and played its particles at the beginning of the game, the next time the lags were played, they remained the same, the profiler shows exactly the same values

[surreal elk]

https://forum.unity.com/threads/expose-point-cache-as-blackboard-attribute.856603/#post-6355635
position data is stored as a texture. you can expose in editor by modifying PointCacheImporter.cs

[half solar]

Is that still relevant its from 2013

I converted an CSV to .pCache and hope my format is correct in the first place

[surreal elk]

how about use ascii format, then replace ',' into space

[half solar]

FormatException: Input string was not in a correct format.
System.Number.ParseSingle (System.String value, System.Globalization.NumberStyles options, System.Globalization.NumberFormatInfo numfmt) (at <695d1cc93cca45069c528c15c9fdd749>:0)

got it working somehow with the format above

thanks @surreal elk !

[upper torrent]

HI! If I want my smoke trails to spread out more, in a random fashion towards the end of their lifetime. What would I add to my VFX graph? Or could this be done tinkering with the turbulence?