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2011-11-20TOLTECS: A lot of changes in the graphics code:Benjamin Haisch
- Optimized drawing code; now only items (sprites, text, screen masks) which have changed from the previous frame are redrawn, this speeds up things a lot - Implemented dirty rectangles using a microtile array - The previously committed Microtile Array implementation from SEL seemed buggy so I wrote my own version which works nicely so far (and is less code and GPL), only MicroTileArray::getRectangles uses parts from the old version, this will be changed later - One known bug related to dirty rectangles remains: Sometimes the background isn't restored correctly and gfx artifacts are visible