Hi! Loic, Thanx for the reply. I think I got the concept.
1.Is this the double buffering??? 2.I guess can be achieved by a frame buffer to framebuffer copy using the BitBLT engine??? Am I right?? 3.Will this help me in achieving a frame rate of 30fps to play a software decoded video. Regards, Nitin Mahajan Socrates Software India Pvt Ltd... mail:[EMAIL PROTECTED] Ph:51101667. Mobile : 9886099925 ====================================== The Lord gave us two ends -- one to sit on and the other to think with. Success depends on which one we use the most. -----Original Message----- From: Loic Grenie [mailto:[EMAIL PROTECTED] Sent: Wednesday, July 23, 2003 9:21 PM To: [EMAIL PROTECTED] Subject: Re: Full screen page flip From: "Nitin Mahajan" <[EMAIL PROTECTED]> > Hello ! > As regards C&T 69030 ,can anyone please tell ,what instant full screen > page FLIP means???? It usually means that you render something to be displayed on the screen in some offscreen part of the video memory, then you tell the chipset that the screen starts at the new position. It's usefull for any fullscreen thing. Example: - Video memory starts at byte 0 and is 2MB long. - There is a red dragon drawn on the screen. - You render a blue fish from the 2MB-4MB region of the video memory. - You wait for the scanline to reach the end of the screen (this is the dodgy part). - You tell the chipset that the video memory starts at 2MB. And presto ! a blue fish is drawn on the screen. - You can start to render a green mountain at 0MB. - You wait for the scanline to reach the end of the screen. - You tell the chipset that the video memory starts at 0MB. A green mountain is now drawn on the screen. > What part of the driver code in xfree86 is handling this??? Usually you have something in the code handling the viewport position. Lo�c _______________________________________________ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel Scanned by SecureSynergy VirusScreen Service. For more information log on to : http://www.securesynergyonline.com or http://www.securesynergy.com _______________________________________________ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
