Re: OpenGL sample code on Linux

[Fred Kiefer]

I don't think that this code in context.c is the problem here. Just
before those line we try to get a 32 bit visual, when XRENDER is
defined, which is the case on my machine. It is rather the other way
round, the gl code uses the first visual and that has a lower depth.


Thomas Gamper wrote:
> for (i=numvis-1, best = -1; i>=0; i--)
>  {
>    if (vinfo[i].depth == 24) best = i;
>    else if (vinfo[i].depth>24 && best<0) best = i;
>  }
> 
> Try to replace 24 with 32. Since an OpenGL Pixelformat without alpha
> channel basically makes no sense.
> 
> TOM
> 
> Fred Kiefer schrieb:
>> I hacked bestContext() in back/Source/x11/context.c to return False and
>> with that both examples work again. This looks like the problem has to
>> do with the visual, drawable or depth selection. On my machine
>> glXChooseFBConfig() finds 18 usable configurations, but the code sticks
>> to the first one.
>>
>> Fred
>>   
>