Composite the splats OVER the target's existing contents (loadOp 'load') instead of
clearing first. Use when layering splats onto an already-rendered scene (e.g. geo
terrain); the blend is straight src-alpha "over". Default false (clear — the
standalone viewer draws splats on a fresh transparent target).
Opaque scene depth (e.g. frame.gbuffer.depth). When set, splat fragments behind the
scene are discarded so terrain/buildings occlude the cloud. Omit for no occlusion.
Composite the splats OVER the target's existing contents (loadOp 'load') instead of clearing first. Use when layering splats onto an already-rendered scene (e.g. geo terrain); the blend is straight src-alpha "over". Default false (clear — the standalone viewer draws splats on a fresh transparent target).