Author: John PassanitiJohn Passaniti Date: May 8, 2007 11:10
Brad Eckert wrote:
> The display puts the raster in the specified rectangular field. If I
> were to render a character by plotting random pixels, it would take
> eight writes to the OLED for each pixel instead of two. This is an
> example of why we don't have a Forth standard for graphics.
You seem to be saying that because graphic display hardware can have
various different costs for various operations, that a graphics standard
isn't going to happen. That might be true if the graphics standard was
very primitive and only offered commands to set pixels. But if the
graphics standard was defined at a higher level-- such as "draw line"
and "copy bitmap" and "erase region" and so on-- then the implementer
for a particular platform is free to choose the most efficient method to
implement that higher-level commands.
This isn't anything new. Most graphics standards I'm aware of define
high-level operations and allow the underlying driver choose the most
efficient method available to implement that.
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