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Torsten Rahn authored
- Actually share identical pixmaps in memory - Cache them inside a dedicated QPixmapCache - Render identical symbols in a batch using QPainter::drawPixmapFragments() Batch rendering can be disabled via the BATCH_RENDERING define. The "O"-keystroke-debug mode is now extended by displaying a background color for each placemark. Placemarks rendered in parallel share the same background color. This should benefit rendering of huge amounts of pixmaps of the same kind (e.g. trees).
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