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Conference bgsdev::open3d

Title:	open3d
Notice:	Kits on notes 3 and 4; Documents note 223
Moderator:	WRKSYS::COULTER

Created:	Wed Dec 09 1992
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	1306
Total number of notes:	5260

1255.0. "limitation of pixmap with 3D30" by BALZAC::BIDAULT () Wed Mar 05 1997 06:47

    Bonjour,
    
    On Alpha 500 with Digital Unix 4.0B with 256Mb.
    The graphic card is PowerStorm 3D30.
    
    What is the size of the largest pixmap I can create ?
    Is there a limitation ?
    A custoner has find that the limitation is 128Mb. is it true ?
    
    Bonne journ�e,
    
    Jacques.

T.R	Title	User	Personal Name	Date	Lines
1255.1	don't know, but curious	WRKSYS::CHALTAS	Someone chanted evening	`Wed Mar 05 1997 08:52`	6
	Hmm -- a PS 3D30 only supports 8-bit pixmaps (I think), which is one byte per pixel. A 128 MB pixmap would be about 11.5k pixels square, or about 102 times the area displayable on a 1280x1024 screen. What application is using such a large pixmap? George
1255.2	by program	BALZAC::BIDAULT		`Wed Mar 05 1997 12:54`	8
	Bonsoir, The customer has found this limitation by program with the routine CREATE_PIXMAP. Bonne soiree, Jacques.
1255.3	maximum size of pixmap POWERSTORM 3D30	BALZAC::BIDAULT		`Tue Mar 11 1997 11:05`	8
	Bonjour, I insist, but is there a theorical limitation of the size of the largest pixmap with a graphic card : PowerStorm 3D30. Bonne soir�e, Jacques.
1255.4	absolute max is 32Kx32K pixels	WRKSYS::RICHARDSON		`Tue Mar 11 1997 12:57`	5
	Both the width and the height of the pixmap are limited to 32766 pixels. Even below this size, a very large pixmap may not fit in main memory. /Charlotte