[Mesa-users] Mesa + llvmpipe + wglCreateContextAttribsARB

[Ken Martin]

Thanks Brian,

We were not providing a WGL_CONTEXT_PROFILE_MASK_ARB so it should be
landing on core so I'm probably barking up the wrong tree. I'll see if I
can track down a bit more on my end.

Thanks so much for responding
Ken



On Thu, Sep 29, 2016 at 7:54 PM, Brian Paul <brianp at vmware.com> wrote:

> On 09/29/2016 07:06 AM, Ken Martin wrote:
>
>>
>> Howdy,
>>
>> Does someone here know if Mesa supports wglCreateContextAttribsARB ? We
>> have someone deploying using Mesa to a Windows VM and they are running
>> into issues that make me suspect that wglCreateContextAttribsARB is
>> either not implemented or not correctly returning a >= 3.2 context. This
>> is with llvmpipe as a renderer. If wglCreateContextAttribsARB is not
>> implemented is there another way to get a 3.2 context from Mesa on
>> windows that I should be looking at?
>>
>> Thanks a bunch!
>> Ken
>>
>
> wglCreateContextAttribsARB is supported.
>
> My first hunch is this is a core vs. compatibility profile issue.  Since
> Mesa only supports core profile for GL 3.2 and later, when you call
> wglCreateContextAttribsARB() you have to specify the profile attribute as
> core (WGL_CONTEXT_PROFILE_MASK_ARB = WGL_CONTEXT_CORE_PROFILE_BIT_ARB).
>
> -Brian
>
>


-- 
Ken Martin PhD
Chairman & CFO
Kitware Inc.
28 Corporate Drive
Clifton Park NY 12065
518 371 3971

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