| 48 | The new symbolization introduced the concept of rendering passes. For a given layer a rendering pass corresponds to an iteration by the stylization code over that layer's features. The default is to render with one pass (pass 0): we iterate once over all the features, and for each feature we stylize / draw it using all the symbols. Usually this gives the desired behavior, but not always. The typical example where this doesn't work is when you want to draw a thin line on top of a thick line, and have "merging" behavior at intersections: |