2d Line Renderer Not Updating

[josemendez]

Same thing here using 

Unity 2019.3 with Universal Render Pipeline. When I change the length, it doesn't update at all with line render


I have clicked on the scene view in order to make the rope render. And it ignores my UV settings.


When I press "Play", it just disappears. And I have to click on the scene view again to show again.


When I change the length, the rope doesn't get updated.

Seems that unlike the built-in pipeline, URPs do not call Camera.onPreCull. Since the line renderer relies on this callback to render the view-dependent mesh, in URP it is not drawn.

Instead, URP calls RenderPipelineManager.beginCameraRendering.

In ObiRopeLineRenderer.cs, declare a renderCallback delegate:

Code:

System.Action<ScriptableRenderContext, Camera> renderCallback;

Replace "Camera.onPreCull += UpdateRenderer;" in ObiRopeLineRenderer.cs OnEnable() method with this:

Code:

renderCallback = new System.Action<ScriptableRenderContext, Camera>((cntxt, cam) => { UpdateRenderer(cam); });
RenderPipelineManager.beginCameraRendering += renderCallback;

And similarly, replace "Camera.onPreCull -= UpdateRenderer;" in OnDisable with this:

Code:

RenderPipelineManager.beginCameraRendering -= renderCallback;

That should get rid of the issue. Will include this fix in the next update.