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@ -54,7 +54,7 @@ Reduce viewport invalidation region size of track reservation and signal state c
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### Rendering
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Track dirty viewport areas seperately form general screen redraws, using a zoom-level dependant sized grid.
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Track dirty viewport areas seperately from general screen redraws, using a zoom-level dependant sized grid.
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Use a rectangle array for general screen redraws instead of a block grid.
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Add a dirty bit to windows and widgets, for redrawing entire windows or widgets.
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Clip drawing of window widgets which are not in the redraw area.
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