aarthificial / pixelgraphics

A collection of pixel art visual effects

PixelGraphics

PixelGraphics is a collection of interactive foliage shaders for Unity
Tested on Unity 2020.2 - PC & WebGL

Installation

Pixel Graphics can be installed as a Unity package using this url:

https://github.com/aarthificial/pixelgraphics.git

Usage

1. Set up a velocity texture
2. Place some emitters in your scene
3. Create materials using the available shaders
4. Or create your own shaders

Release video:

pixelgraphics's Issues

Bug with sprite sheets

Hi I would like to report a bug I experienced while using a sprite from a sprite sheet as main texture. The resulting bug is as follows:

The first row of sprites of the sprite sheet are ok, but from the second row onwards the grass sprites start showing some pixels up top like showed in the first image.

Now the strange part is when the bushes start the problem goes away again, so probably not only related to the rows of the sprite sheet that I am using as main texture. Like you can see in the next images / gifs:

Sprite Sheet

OK Bush

Not OK Grass from second row of the sprite sheet

That's about it, all the other functionalities are working just fine.

v1.0.1 Render feature does not work with Unity 2022 and URP 14

Issue Error Log:
You can only call cameraColorTarget inside the scope of a ScriptableRenderPass. Otherwise the pipeline camera target texture might have not been created or might have already been disposed.
UnityEngine.Rendering.Universal.ScriptableRenderer:get_cameraColorTarget ()
Aarthificial.PixelGraphics.Forward.VelocityRenderFeature:AddRenderPasses (UnityEngine.Rendering.Universal.ScriptableRenderer,UnityEngine.Rendering.Universal.RenderingData&) (at ./Library/PackageCache/com.aarthificial.pixelgraphics@5d5d2dab89/Runtime/Forward/VelocityRenderFeature.cs:38)
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)

Couldn't open include file

Shader error in 'Hidden/PixelGraphics/Velocity/Blit': Couldn't open include file 'Packages/com.unity.render-pipelines.universal/Shaders/Utils/Fullscreen.hlsl'. at line 45

grass_pixelart_shader not working -.- [SOLUTION FOUND]

Recently came across your channel and loved your foliage video. The thing is though, the "grass_pixelart_shader" turns my grass sprite invisible. The "grass_shader" works fine however. I am in

I did as the video said, Create New Material. Change it's shader to "grass_shader" or "grass_pixelart_shader". Place either one into the object you want.

What would the solution be?

This is my pixel perfect camera if that helps. I don't want to upscale because my other sprites lose quality with it on.

Perspective camera mode fix [experimental]

Ok, as some users have been having this issue, I thought I'd give it a go and I think a found a solution.

If you have an orthographic camera, all is good:

Now, if you use perspective, then this weirdness will happen:

After some fiddling, here's my fix, on perspective mode:

So, what changed? Basically, after dumping some values, I noticed the values for _originalCamera.projectionMatrix had a very noticeable difference between two camera modes. Like, in ortho you have tiny values like 0.09, while in perspective, this number was the same, but with less zeros (ie 0.9), so I kinda added this zero back, and all is good.

Basically the fix would be replacing this line:

cmd.SetGlobalVector(ShaderIds.CameraPositionDelta, screenDelta * 0.5f);

... for this one:
cmd.SetGlobalVector(ShaderIds.CameraPositionDelta, screenDelta * 0.05f);

I tested different camera Z positions, FOV values and all seem to be working fine, but needs more testing.

If anyone is happy to further test or have the definitive fix, feel free to contribute. Hope this is useful for someone as it is for me!

Cinemachine Confiner not working when using VelocityCamera.cs

Hello, I'm having a problem where as long as I have the VelocityCamera component in my camera, the cinemachine confiner extension doesn't work at all. I really like the foilage shader and need the velocitycamera for interactive grass and it's hindering development; so a reply would be sincerely appreciated.

As always, have a good day!

Error in Unity

Library\PackageCache\com.aarthificial.pixelgraphics@dbe057a\Runtime\Forward\VelocityRenderFeature.cs(38,13): error CS0619: 'ScriptableRenderPass.ConfigureTarget(RenderTargetIdentifier)' is obsolete: 'Use RTHandle for colorAttachment'

Camera mode

I apologize if this was mentioned somewhere but does this only work with Orthographic camera?
I use perspective camera for the parallax effect and I was wondering if this could be modified in some way to work with perspective camera, didn't know where else to reach so I figured I'd create an issue

The Grass pixel art shader makes my texture disappear and the velocity camera script doesn't work.

So I added the material that has the shader on it to my grass texture and the grass got disappeared.

Then I tried adding the velocity camera because I thought that could maybe fix it but it gives me an error when I try to add the velocity camera script to unity and I don't know how to fix it

Movable camera

Moving the camera mess with the velocity texture. Any advice?

Velocity Emitters not going invisible (With Render Feature on 2D Renderer)

Works fine with a Universal Renderer (previously known as Forward Renderer I guess).
Wondering if anyone knows how to get around this? I'd love to use this with a 2D renderer but there's no "Transparent Layer mask" option for 2D renderer

Currently the only thing I've figured out is to set the sorting layer below everything else like and just hope I always have something in the background to make sure the emitter sprite is covered.

RenderPass not working and VelocityCamera.cs not working with another custom Render Pass active

I have another custom Render Pass and the velocityCamera script doesnt seem to work anymore when having my render feature active.
I tried the RenderFeature since Render Features now exist for 2D, but it doesnt work at all. Preview is giving me just a black screen.

Grass_material showing black grass

Recently I tried to install the package and follow the tutorial but when I add the grass material to the grass it made all the black goes black

the grass is still moving but it's just all black like so.
I'm using Unity 2020.3.18f1

The Sprite with the pixel art shader became invinsible (i cant see it any where but the game object was there).

>>> this is my trees sprite screen shot

>>> this is my secondary texture screen shot

>>> this is the screen shot when i use the pixel graphic/folliage/grass_pixel_art_shader

!!Click Here To View The Bug!! >>> this is the video that shows all the bug

please help :)