Graphics.DrawMesh flickering in Editor

Hi,

I am trying to draw a simple quad mesh with a Material in both the Scene View and the GameView using

Graphics.DrawMesh

. However, the result ends up flickering in the Scene View. I have no clue as to why.



This is the code I use for this

Code (CSharp):

1.     public void OnDrawGizmos()
2.     {
3.         //Do not draw if the required assets are not set
4.         if (Mesh == null || DrawingMaterial == null)
5.         {
6.             return;
7.         }
8.  
9.         foreach(Camera cam in SceneView.GetAllSceneCameras())
10.         {
11.             Graphics.DrawMesh(Mesh, transform.position, transform.rotation, DrawingMaterial, 0, cam);
12.         }
13.     }

I want to draw for each Camera individually because I want them to face each Camera at all times. For now, they simply all share the same transform.

Does anybody know what I am missing here?

Thanks!

 

Bump!

 

OnDrawGizmos is not reliable to make camera based draw calls. Try this instead:

Code (CSharp):

1. using UnityEngine;
2.  
3. [ExecuteInEditMode]
4. public class DrawTest : MonoBehaviour
5. {
6.     public Mesh mesh;
7.     public Material material;
8.  
9.     private void OnEnable()
10.     {
11.         if (UnityEngine.Rendering.GraphicsSettings.renderPipelineAsset == null) // built-in
12.             Camera.onPreCull+= DrawMesh;
13.         else // SRP
14.             UnityEngine.Rendering.RenderPipelineManager.beginCameraRendering += DrawMesh;
15.     }
16.  
17.     private void OnDisable()
18.     {
19.         if (UnityEngine.Rendering.GraphicsSettings.renderPipelineAsset == null) // built-in
20.             Camera.onPreCull-= DrawMesh;
21.         else // SRP
22.             UnityEngine.Rendering.RenderPipelineManager.beginCameraRendering -= DrawMesh;
23.     }
24.  
25.     private void DrawMesh(UnityEngine.Rendering.ScriptableRenderContext context, Camera camera)
26.     {
27.         DrawMesh(camera);
28.     }
29.  
30.     public void DrawMesh(Camera cam)
31.     {
32.         if (mesh == null || material == null)
33.             return;
34.         Graphics.DrawMesh(mesh, transform.position, Quaternion.LookRotation(transform.position - cam.transform.position), material, 0, cam);
35.     }
36. }
37.  

 

Unfortunately, this does not seem to draw anything for me.
The code does seem to run, but I do not see anything being drawn on my screen.
Im running v2020.2.2f1

 

Change onPreRender to onPreCull and see if that does the trick. I also edited the code in the previous post.

 

Thats seems to do it! Thanks a bunch!