Re: Problem with glDepthMask

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 <[email protected]> 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 <[email protected]> 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
> 
> 
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