Pick a Rect from your scene and build a Sprite with it

Im not sure if this is the place to ask this question, i started a game that needs like 10k platforms so my player can keep jumping up-left and up-right and new platforms will always be there for the player.

I make a complex object pooling system but still... some android phones find this heavy to load when new platforms are being set active.

So i thought on doing a big Sprite with randommly generated platforms and use it as a big sprite.

my problem is that i can't find a why to kind of take a screenshot of this set of sprites and make a big sprite with those.

this is the code i'm using but it uses a second camera and it gaves a blurry picture of all the platforms

Code (CSharp):

1.  private void GenerateBigSprite()
2.     {
3.         Camera activeCamera = cam2;
4.  
5.         Texture2D tex = new Texture2D(1000, 1000,TextureFormat.ARGB32, false);
6.  
7.         // ofc you probably don't have a class that is called CameraController :P
8.  
9.         // Initialize and render
10.         RenderTexture rt = new RenderTexture(1000, 1000, 32);
11.         activeCamera.targetTexture = rt;
12.         activeCamera.Render();
13.         RenderTexture.active = rt;
14.  
15.         // Read pixels
16.         Rect rectReadPicture = new Rect(0, 0, 1000, 1000);
17.         tex.ReadPixels(rectReadPicture, 0, 0);
18.         tex.Apply();
19.  
20.         byte[] bytes = tex.EncodeToPNG();
21.         NewSprite = Sprite.Create(tex, new Rect(0, 0, 1000, 1000), new Vector2(100, 100), 100f);
22.         GameObject coso = new GameObject("coso");
23.         coso.transform.parent = null;
24.         coso.transform.position = new Vector3(0, 0, 0);
25.         coso.AddComponent<SpriteRenderer>().sprite = NewSprite;
26.         // Clean up
27.         RenderTexture.active = null; // added to avoid errors
28.                                      // DestroyImmediate(rt);
29.  
30.     }
31.  

Since this code depends on what the second camera renders, i had to increase camera size to 100 and this is what i get



If i use camera size 5 (normal camera size) i only get a small portion of the screen which doesn't work for me since i need to at least have 20k platforms in one sprite. but of course with size 5 platforms look beautiful




There must be another way not using an extra camera where i set all my platforms and then establish a rect with an area that covers all of them and then create a Sprite from that area... am i wrong?

thanks in advance guys!

 

no one