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Avoid using the alpha property, when possible.
Avoid using effects that require alpha blending when using the
alpha
property, such
as fading effects. When a display object uses alpha blending, the
runtime must combine the color values of every stacked display object
and the background color to determine the final color. Thus, alpha
blending can be more processor-intensive than drawing an opaque
color. This extra computation can hurt performance on slow devices.
Avoid using the
alpha
property, when possible.
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