Scene's auto clear not working

giraphics · March 18, 2023, 11:06am

Hi,

It seems the Scene’s autoClear works well with Babylon Playground as shared in the below demo.

Here I set scene.autoClear=false

However, it does not behave correctly when I create a simple typescript application, here is a link for my repo.

giraphics/babylonjs-webpack/blob/master/src/index.ts#L53


      
              return scene;
          };
          
          
export const babylonInit = async (): Promise<void> => {
              const canvas = document.getElementById("renderCanvas") as HTMLCanvasElement;
              // Generate the BABYLON 3D engine
              let engine = new Engine(canvas, true);
          
          
    // Create the scene
              const scene = createScene(engine, canvas);
              scene.autoClear = false;
          
          
    // Register a render loop to repeatedly render the scene
              engine.runRenderLoop(function () {
                  scene.render();
              });
          
          
    // Watch for browser/canvas resize events
              window.addEventListener("resize", function () {
                  engine.resize();
              });

It seems the background is affected but not the rendering meshes sphere and ground.
I am missing something here?

Evgeni_Popov · March 18, 2023, 3:24pm

Try to set the preserveDrawingBuffer option when creating the engine (that’s what the Playground does).

giraphics · March 19, 2023, 10:50am

It works like a charm. Thank you.

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Scene's auto clear not working

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