OpenEuphoria

Re: Fonts

• Posted by Robert Craig <rds at EMAIL.MSN.COM> Nov 01, 1998
• 955 views

John DeHope writes:
> EMemCopy does this *really* fast.
> Simple, right? I hope this offers a clear alternative to using the pixel
> routine. I think RDS included it for the sake of being complete, but it
> has *no* place in any graphics library that even wants to dream of
> speed.

Ouch!  
You're right of course. pixel() is much slower than mem_copy(), poke(),
special machine code, or techniques that only work in one graphics mode.
However I'd like to mention:
     * pixel() is much faster in mode 19 than in other modes.
     * pixel() of a fairly long sequence of points is *much* more
        efficient than pixel() of a single point (atom)
     * pixel() will safely clip points that are off the screen

If you have an algorithm that calls pixel() once per pixel,
you should strongly consider converting it into one that composes
a sequence of pixels before making a single call to pixel().
The same goes for display_image() - try to output bigger, especially
wider, images in each call.

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     Rob Craig
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