No, by "sub-pixel" I mean geometry which places coordinates at
fractional screen coordinates for purposes of expressing the locations
of those vertices more accurately than integers would allow. If the
display has sub-components that are smaller than a pixel, that could be
taken advantage of during the rendering process as it is with LCD text,
but that has nothing to do with the need that some applications have to
express their geometry with sub-pixel precision.
It may not seem obvious that sub-pixel precision in geometry matters
when you are dealing with discreet pixels, but if you consider that
antialiased rendering can show sub-pixel differences by the opacity of
the pixels on the boundary of a shape, and if you consider that even
with non-antialiased rendering the location of the "jaggies" on a sloped
line will be affected by the sub-pixel location of the endpoints, you
can start to see that allowing expression of coordinates more finely
than an integer pixel location is worthwhile...
...jim
[EMAIL PROTECTED] wrote:
Hi Jim,
By 'sub-pixel' are you referring to the sub-pixels in LCD displays, for example?
Does this then not apply to CRT monitors?
Thanks,
D.
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