[SDL] BUG?: RGBA->screen blit has 1-off error with opaque colors

[Colin Tuckley]

Markus Laire wrote:

> I find this bug to be quite annnoying as currently I can't have fully
> opaque colors when using the alpha-channel.

I've come across something similar which causes problems when trying to
implement a cursor using xor. It's more than just annoying in that case.

regards,

Colin

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