Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!rice!sun-spots-request
From: staver@susque.crd.ge.com (Daniel A Staver)
Newsgroups: comp.sys.sun
Subject: Trouble with dump_region, plane_groups
Keywords: Windows
Message-ID: <4255@kalliope.rice.edu>
Date: 30 Jun 89 19:49:07 GMT
Sender: usenet@rice.edu
Organization: Sun-Spots
Lines: 15
Approved: Sun-Spots@rice.edu
X-Sun-Spots-Digest: Volume 8, Issue 62, message 9 of 10

I have a problem getting a proper dump of a region on the screen when the
region of interest has pixels in both the color and b/w planes.

What I would like is to generate a color raster file which would contain
pixel information from both planes as selected by the enable plane. If any
of the pixels are from the b/w plane, then just select those for merging
into the color-plane raster dump.

How does one dump the enable plane? Can there be more than 256 colors such
that I can have 256 colors for my color-plane and also have 2 extra for
black and white, or do I need to find the "lightest" and "darkest" out of
the 256 available colors in the current color map (selected by my
application program - IDL) and map the b/w pixels to these two colors?
The normal programs, dumpregion, screendump, etc, only get from one device
(display buffer) it seems.