Rect transparency?

BlitzPlus Forums/BlitzPlus Beginners Area/Rect transparency?

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The simplest way is to set every odd pixel in the image to the mask color:

XoXoXoXoX
oXoXoXoXo
XoXoXoXoX
oXoXoXoXo

which unless you look very close gives the effect of the image being 50% transparant.