Around 22 o'clock on Dec 16, Brian Stell wrote:

> The glyph could be stored on the X server in a off screen pixmap.

Turns out that this often generates more wire traffic and is usually
slower inside the server than a single PutImage.  Each CopyPlane is 32
bytes; a typical monochrome text string will use fewer bytes for each
glyph.

For larger glyphs, it's a small win, but there aren't very many of them on 
the screen.  For really large glyphs, it turns out to be a small win to 
use FillRectangle instead; FillRectangle has the added feature of working 
with all colors as well; for the PutImage case, you have to use a 
temporary stipple when painting colors other than 0 or ~0.

Keith Packard        XFree86 Core Team        Compaq Cambridge Research Lab


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