Doubts on Post Processing Effects

Questions
1

How to set autofocus in DepthOfField in Default Rendering Pipeline.
For Example, Once I go near to any objects in the scene, its focus needs to be changed automatically and make the object clear. Is It Possible?

2

Did you try to walk through this example? - https://playground.babylonjs.com/#8F5HYV#9

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3

Hey this is 100% possible. In addition to following the guide above I’d recommend adding a function to scene.onAfterRenderObservable() to get the updated distance value after every frame.

In my case below, I have a mesh I wish to target and I use the built it meshDistanceToCamera function to calculate the distance. It’s calculated in meters and babylon’s default render pipeline DOF expects millimeters, so we have to multiply it by 1000.

I hope this helps!

  • note SceneManager.Meshes is just a dictionary of meshes.

      const DOFFactor = 1000;
  defaultPipeline.depthOfFieldEnabled = true; // false by default

  if (

    defaultPipeline.depthOfFieldEnabled &&

    defaultPipeline.depthOfField.isSupported

  ) {

    defaultPipeline.depthOfFieldBlurLevel = 0; 

    defaultPipeline.depthOfField.fStop = 1.4; 

    defaultPipeline.depthOfField.focalLength = 35; 

    scene.onAfterRenderObservable.add(() => {

      const topLevelMsh =

        SceneManager.Meshes[CONSTANTS.MYMESH]

          .loadedMeshes[0];


      let distancefromCamera =

        DOFFactor *

        topLevelMsh.getDistanceToCamera(scene.activeCamera);

      if (defaultPipeline) {

        defaultPipeline.depthOfField.focusDistance = distancefromCamera;

      }

    }); 

    defaultPipeline.depthOfField.lensSize = 100; 

  }
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