Re: Having hard time using XGetImage with glDrawPixels in OpenGL

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Article #38301

#38301

From: Andy Vesper
Date: Mon, 19 May 1997 00:00

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Shuky Rosinger wrote:

> I am having a very hard time drawing pixel data with glDrawPixels onto
> an OpenGL scene. I use glDrawPixels with GL_RGB, GL_UNSIGNED_BYTE. The
> image is retrieved with XGetImage.
> 
> The resulting image in the OpenGL scene is somehow not synchronized (has
> the effect of a TV has bad horizontal sync or vertical sync).

Call glXWaitGL before the XGetImage.

-- 
Andy V (A Digital spoke, not a Digital Spokesperson)
mailto:andy.vesper@eng.pko.dec.com

OpenGL Alpha Geek

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From: Andy Vesper <andy.vesper@eng.pko.dec.com>
Subject: Re: Having hard time using XGetImage with glDrawPixels in OpenGL
Date: 1997/05/19
Message-ID: <33804BDE.656F98D0@eng.pko.dec.com>
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References: <337FFE27.E564C73@numbat.cs.rmit.edu.au>
To: Shuky Rosinger <rosinger@numbat.cs.rmit.edu.au>
Organization: sys$sysdevice:[vesper]/.organization
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