Re: [PyOpenGL-Users] Problem with glDepthMask

[Nicolas P. R. <Nic...@in...>]

glDepthMask(0) is supposed to prevent writing to the depth buffer (but reading is ok)

Usually it is 1 by default (writing enabled) but what I don't get is that simply setting it off then on leads to weird results (while it should be no different than default). I'm probably missing something obvious.

Thanks for testing.


Nicolas



> On 20 Jan 2016, at 18:57, Chris Barker <chr...@no...> wrote:
> 
> I can't offer any suggestions, but the display goes to heck for me, too.
> 
> python 2.7.11
> OpenGL.__version__:  '3.1.1a1'
> 
> OS-X 10.10
> 
> MacBook Pro 2015
> 
> What is glDepthMask supposed to do?
> 
> -Chris
> 
> 
> 
> On Tue, Jan 19, 2016 at 11:13 PM, Nicolas P. Rougier <Nic...@in...> wrote:
> 
> Hi all,
> 
> 
> I'm having a problem using the glDepthMask() function. I've made a simple example to show the problem:
> 
> https://gist.github.com/rougier/188c4771dab1694a074e
> 
> 
> With the glDepthMask(True) / glDepthMask(False) commented out, the display is fine. But with them, the display is totally screwed. I would like to know if you get the same output or if this is only on my machine ?
> 
> I'm using python 3.5.1 and PyOpenGL 3.1.0. If anybody has an explanation...
> 
> 
> 
> Nicolas
> 
> 
> ------------------------------------------------------------------------------
> Site24x7 APM Insight: Get Deep Visibility into Application Performance
> APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month
> Monitor end-to-end web transactions and take corrective actions now
> Troubleshoot faster and improve end-user experience. Signup Now!
> http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140
> _______________________________________________
> PyOpenGL Homepage
> http://pyopengl.sourceforge.net
> _______________________________________________
> PyOpenGL-Users mailing list
> PyO...@li...
> https://lists.sourceforge.net/lists/listinfo/pyopengl-users
> 
> 
> 
> -- 
> 
> Christopher Barker, Ph.D.
> Oceanographer
> 
> Emergency Response Division
> NOAA/NOS/OR&R            (206) 526-6959   voice
> 7600 Sand Point Way NE   (206) 526-6329   fax
> Seattle, WA  98115       (206) 526-6317   main reception
> 
> Chr...@no...