Question Difference in Scene and Game view when using multiple cameras

Hello,


I'm working on 2D game with multiple characters.
I want to implement character layering in following way: lower layer camera render everything on its layer into RenderTexture. Then this RenderTexture is assigned to SpriteRenderer on next layer and is used as background for second layer. This is the only solution I found to blend each character effects only with everything below him (and not on top).

Here is the issue.
When I play the game I see everything as expected in Scene view as well as each camera previews.
But the Game view shows me only character rendered on top layer and camera background color instead of previous layer RenderTexture.

Camera depths seem to be configured properly. The lower the layer - the smaller depth number (0 for static background, 10 for top most characters).

Does anyone has any ideas?

I attached camera configurations.
RenderTextures are created, assigned and updated at runtime.

Start()
RenderTexture LayerRender = new RenderTexture(Screen.Width, Screen.Height, 0, RenderTextureFormat.Default);
GetComponent<Camera>().targetTexture = LayerRender;

Update()
for (int i = 0; i < 2; i++) LayerCamera.Render();



Kind regards,
nTu4Ka.

 

Can't you just use the sorting group component for rendering sprites on top or below of each other?

 

I need to blend them. E.g. multiply color blending.
As far as I know I cannot sample pixel color in shader of another object (object on layer below).

 

Looks interesting. I wasn't aware of this. Will look into this one.

 

i think that produces funky results for example when you change transparency

sounds like you are making some mistake on your camera render texture that is not rendering the background as transparent

the first thing that i have to say is that you cant apply the render texture to a sprite renderer, you would need to create a sprite first.

Anyway you can check out this thread:

https://forum.unity.com/threads/how-to-render-a-reflection-mirror.1219998/

 

Thank you!

I assigned rendered texture to the material following way:

Code (CSharp):

1. GetComponent<Renderer>().material.mainTexture = RenderTexture;

It seemed like it worked. I could see rendered texture on the material (not in sprite field of course).
I could also see everything in action in scene view.

As an alternative solution I tried creating and assigning sprites but the game became significantly slow almost slide show.

Code (CSharp):

1. LayerTexture = new Texture2D(Instance.ScreenWidth, Instance.ScreenHeight);
2. LayerTexture.ReadPixels(new Rect(0, 0, Instance.ScreenWidth, Instance.ScreenHeight), 0, 0);
3. LayerTexture.Apply();
4.  
5. // Assign the Texture2D to a SpriteRenderer
6. NextLayerRenderer.sprite = Sprite.Create(LayerTexture, new Rect(0, 0, Instance.ScreenWidth, Instance.ScreenHeight), new Vector2(0.5f, 0.5f));

I'll try Kurt-Dekker package and see the implementation.
Thank you!

 

Interesting solution.
I tried something like this. The issues is - I'm rendering characters in world space and RawImage is a screen space component. If I understand correctly.
I think I'll try the option rendering on a quad.

I'm still confused why everting looks good in scene view but not in game view.

 

I figured out why I was seeing everything in scene view but not in game view.
Game view is based on cameras while scene view shows all the objects as they are.

So looks like I don't completely understand how camera rendering works and how to set up multiple cameras rendering queue.

 

Aaand after this I think I resolved my issue.

I changed SpriteRenderer to RawImage to assign RenderTexture directly and Canvas to Screen Space - Camera.

Thank you @venediklee and @karderos for your involvement and ideas.