which is more performant for blitting – repositioning a sprite sheet within a scrollRect or using copyPixels()?
which is more performant for blitting – repositioning a sprite sheet within a scrollRect
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which is more performant for blitting – repositioning a sprite sheet within a scrollRect or using copyPixels()?
Without doing any test I will answer copyPixels.
In the first case you have 2 objects: a sprite sheet which may be quite large and another object which may be quite complex, there is a masking process involved. You lose all the interest of blitting.
In the second solution you have a very low-level operation (copying pixels) and a single display object (the bitmap). The spritesheet is not even loaded in the display, this is by far the lightest solution in my humble opinion.