RE: How to determine maximum frame buffer size?

Sorry for the slow reply, but the spam filter nabbed the first couple posts.

 

This does sound like a bug, and I would recommend contacting [email protected] with a sample if possible. On that hardware, I would recommend keeping render targets to a size of 2048 or smaller. The hardware size limit is an odd number somewhat larger than that, that I don't remember off the top of my head. Our driver can handle rendering to surfaces larger than the hardware limit, but it has an additional cost. Additionally on that hardware, you will start to run into memory management issues. 

 

  -Evan

 

________________________________

Michael I Gold
Sent: Tuesday, February 21, 2006 8:03 AM
To: Multiple recipients of list OPENGL-GAMEDEV-L

 

I think EnumDisplaySettings is the right answer but the behavior you observe may be a driver bug.  You should contact ATI for assistance.

Robin Charlton wrote: 

EnumDisplaySettings does indeed return the available display resolutions and refresh frequencies. But OpenGL is *window* rather than display based and windows can be resized larger than the display. 
 
So the question remains, what's the maximum window size supported by a render context?
 
  

	-----Original Message-----
	Behalf Of Laurent Auneau
	Sent: 20 February 2006 18:42
	To: Multiple recipients of list OPENGL-GAMEDEV-L
	 
	EnumDisplaySettings will do the job. You'll get resolution, 
	frequency and color depth supported by your video card and monitor.
	 
	  Laurent.
	 
	 
	-----Message d'origine-----
	De : [email protected] [mailto:[email protected]] De 
	la part de Robin Charlton Envoyé : lundi 20 février 2006 
	19:02 À : Multiple recipients of list OPENGL-GAMEDEV-L Objet 
	: How to determine maximum frame buffer size?
	 
	On MS Windows XP, is there a way to detemine the maximum 
	permitted dimensions of a window that can have a rendering context? 
	 
	All I can find is GL_MAX_VIEWPORT_DIMS which returns 4096 x 
	4096 - a size which causes the driver to hang after a call to 
	glClear. 
	I'm running on a RADEON 9700 PRO x86/MMX/3DNow!/SSE 2.0.5646 
	WinXP Release.
	 
	All help appreciated!
	-
	Robin Charlton
	 
	-----
	FAQ and OpenGL Resources at:
	  http://www.geocities.com/SiliconValley/Hills/9956/OpenGL
	 
	--
	Author: Robin Charlton
	  INET: [email protected]
	 
	Fat City Hosting, San Diego, California -- http://www.fatcity.com
	---------------------------------------------------------------------
	To REMOVE yourself from this mailing list, send an E-Mail message
	to: [email protected] (note EXACT spelling of 'ListGuru') 
	and in the message BODY, include a line containing: UNSUB 
	OPENGL-GAMEDEV-L (or the name of mailing list you want to be 
	removed from).  You may also send the HELP command for other 
	information (like subscribing).
	 
	 
	-----
	FAQ and OpenGL Resources at:
	  http://www.geocities.com/SiliconValley/Hills/9956/OpenGL
	 
	--
	Author: Laurent Auneau
	  INET: [email protected]
	 
	Fat City Hosting, San Diego, California -- http://www.fatcity.com
	---------------------------------------------------------------------
	To REMOVE yourself from this mailing list, send an E-Mail message
	to: [email protected] (note EXACT spelling of 'ListGuru') 
	and in the message BODY, include a line containing: UNSUB 
	OPENGL-GAMEDEV-L (or the name of mailing list you want to be 
	removed from).  You may also send the HELP command for other 
	information (like subscribing).
	 
	 
	This message has been scanned for viruses by MailController - 
	www.MailController.altohiway.com
	 
	    

 
----- 
FAQ and OpenGL Resources at:
  http://www.geocities.com/SiliconValley/Hills/9956/OpenGL