Question Camera stacking and RenderTexture Problem

I have two Cameras
MainCamera - That renders everything except Weapon 3D model ('Weapon' layer) - Clear Flag - Skybox - Depth value - 0
WeaponCamera - That only renders Weapon Layer - Clear Flag set to 'Depth only' - Depth Value -1

I want to render whatever I see on a RawImage. I do this by creating renderTexture in runtime and assigning it to RawImage.
Here is the script:

Code (CSharp):

1. private void Start()
2.     {
3. screenDisplay=GameObject.FindGameObjectWithTag("RenderScreen").GetComponent<RawImage>();
4.         CreateRenderTexture();
5. }
6.  
7. void CreateRenderTexture()
8. {
9.     // Get the original render texture from the original camera
10.     RenderTexture originalRenderTexture = PlayerCamera.targetTexture;
11.  
12.     // Calculate the target resolution of the render texture based on the current screen resolution and the stored percentage
13.     int targetWidth = Mathf.RoundToInt(Screen.currentResolution.width * (PlayerPrefs.GetFloat("MoveRenderTexture", 75f) / 100f));
14.     int targetHeight = Mathf.RoundToInt(Screen.currentResolution.height * (PlayerPrefs.GetFloat("MoveRenderTexture", 75f) / 100f));
15.  
16.     // Create a new RenderTexture with the target resolution
17.     renderTexture = new RenderTexture(targetWidth, targetHeight, 24);
18.  
19.     // Set the render texture as the target texture for the main camera
20.     PlayerCamera.targetTexture = renderTexture;
21.  
22.     // Create a temporary render texture to hold the output of the weapon camera
23.     RenderTexture weaponRenderTexture = new RenderTexture(targetWidth, targetHeight, 24);
24.  
25.     // Render the weapon camera to the temporary render texture
26.     WeaponCamera.targetTexture = weaponRenderTexture;
27.     WeaponCamera.Render();
28.  
29.     // Combine the main camera and weapon camera render textures
30.     RenderTexture combinedRenderTexture = new RenderTexture(targetWidth, targetHeight, 24);
31.     Graphics.Blit(renderTexture, combinedRenderTexture);
32.     Graphics.Blit(weaponRenderTexture, combinedRenderTexture);
33.  
34.     // Assign the combined render texture to the RawImage
35.     screenDisplay.texture = combinedRenderTexture;
36.  
37.     // Get the height and width of the ScreenDisplay RectTransform
38.     RectTransform screenDisplayRect = screenDisplay.rectTransform;
39.     float displayHeight = screenDisplayRect.rect.height;
40.     float displayWidth = screenDisplayRect.rect.width;
41.  
42.     // Calculate the height of the camera view that matches the RawImage's aspect ratio
43.     float cameraHeight = displayHeight;
44.     float cameraWidth = displayWidth;
45.  
46.     // Adjust the aspect ratio of the camera
47.     PlayerCamera.aspect = aspectRatio;
48.  
49.     // Reset the original render texture of the original camera
50.     PlayerCamera.targetTexture = combinedRenderTexture;  
51. }
52.  
53. //PlayerCamera = MainCamera

But the problem is it is not rendering Weapon 3D model
I get error Display 1 No Cameras rendering

- A video

 

Bump!

 

You're never resetting the targetTexture of your WeaponCamera

Because all of your cameras are rendering to RenderTextures. This means none of them are rendering to the screen.