Function renderTranslucentDepthForPick

packages/engine/Source/Scene/Picking.js:634–673

* @typedef {object} PickedMetadataInfo * * Information about metadata that is supposed to be picked * * @property {string|undefined} schemaId The optional ID of the metadata schema * @property {string} className The name of the metadata class * @property {string} propertyName The name of the m

(scene, drawingBufferPosition)

 */

function renderTranslucentDepthForPick(scene, drawingBufferPosition) {
  // PERFORMANCE_IDEA: render translucent only and merge with the previous frame
  const { defaultView, context, frameState, environmentState } = scene;
  const { viewport, pickDepthFramebuffer } = defaultView;

  scene.view = defaultView;

  viewport.x = 0;
  viewport.y = 0;
  viewport.width = context.drawingBufferWidth;
  viewport.height = context.drawingBufferHeight;

  let passState = defaultView.passState;
  passState.viewport = BoundingRectangle.clone(viewport, passState.viewport);

  scene.clearPasses(frameState.passes);
  frameState.passes.pick = true;
  frameState.passes.depth = true;
  frameState.cullingVolume = getPickCullingVolume(
    scene,
    drawingBufferPosition,
    1,
    1,
    viewport,
  );
  frameState.tilesetPassState = pickTilesetPassState;

  scene.updateEnvironment();
  environmentState.renderTranslucentDepthForPick = true;
  passState = pickDepthFramebuffer.update(
    context,
    drawingBufferPosition,
    viewport,
  );

  scene.updateAndExecuteCommands(passState, scratchColorZero);
  scene.resolveFramebuffers(passState);

  context.endFrame();
}

const scratchPerspectiveFrustum = new PerspectiveFrustum();
const scratchPerspectiveOffCenterFrustum = new PerspectiveOffCenterFrustum();