From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <e983d8a90918baa9d0210c19c51684ec@yourdomain.dom>
To: 9fans@cse.psu.edu
From: benavento@gmail.com (Federico G. Benavento)
Date: Sat,  8 Jul 2006 13:22:56 -0300
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Subject: [9fans] page/png bug
Topicbox-Message-UUID: 786d72aa-ead1-11e9-9d60-3106f5b1d025

there is a bug with .png's in page(1) and png(1)

hget http://plan9.escet.urjc.es/iwp9/banner.png | page
hget http://plan9.escet.urjc.es/iwp9/banner.png | png
(note you wont see the bug if you're not using a 32bpp display)

this doesn't happen in abaco because it doesn't draw the image that png(1)
outputs directly on the screen, it first draws it on a RGB24 image
and then draws that image on the screen

	// fd is png(1)'s stdout
	i = readimage(display, fd, 1);
	i2 = allocimage(display, i->r, RGB24, 0, DNofill);
	draw(i2, i2->r, display->black, nil, ZP);
	draw(i2, i2->r, i, nil, i->r.min);
	freeimage(i);
	// now i2 can be draw correctly on the screen

this is not a patch, because I don't know wether png(1) should output
an image that can be draw directly on the screen or page and png (without -d)
should use 2 images.