Tuesday, 7 December 2010

html5 canvas speed notes

Setting fill and Stroke style can have a negative performance impact even if you dont use them and are setting them to what they used to be. (Firefox)


Also I can't make dirty rectangles code run as fast as just doing a big clearRect for the whole canvas. This is for frantic - a space invaders style game where nearly every sprite will have moved since the last paint


Drawing text on canvas:
fillText about twice as fast as strokeText

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