Using OpenLayers 10 and WebGL, how to render contour lines with labels showing their elevation, spread along their length? Similar to the labels in this picture:

The contour lines are loaded from a GeoJSON containing a collection of features with LineString geometries, each having an elevation property.

For performance reasons I am looking for a solution with WebGL. I had a look at WebGLVectorLayerRenderer and its VectorStyleRenderer in a custom Layer implementation, but I do not find how to configure the style property to display the labels.