[Mesa-dev] Fwd: Re: [directfb-dev] First results of Mesa/DRM based DirectFB on i915 (GLES2.0 acceleration)

[Dave Airlie]

On Sun, Mar 13, 2011 at 5:15 PM, Denis Oliver Kropp <dok at directfb.org> wrote:
> On 13/03/11 08:09, Dave Airlie wrote:
>> On Sun, Mar 13, 2011 at 5:02 PM, Denis Oliver Kropp <dok at directfb.org> wrote:
>>> Hi,
>>>
>>> thanks to all of you who contributed to Mesa/DRM/KMS.
>>>
>>> Following are some benchmark results of the new DirectFB on Mesa port.
>>>
>>> The code is checked into git.directfb.org now.
>>>
>>>
>>> I also think I know how to map the buffers now (see my previous mails),
>>> using intel specific ioctl (as in libkms bo_map) with the handle returned by
>>> eglExportDRMImageMESA.
>>>
>>
>> I don't know the right answer, but that isn't it. You really don't
>> want to be using libkms at all
>> for that use case I don't think. libkms buffers aren't meant to be
>> used in acceleration situations.
>
> Right, I'm not going to use libkms.
>
> I'll stay with the Mesa based allocation, but thought I can map the bo
> similar to how it is done in libkms' bo_map implementation for intel:

You should probably use libdrm_intel I'm not following the
architecture of what you are doing though,
if directfb has a loadable per-gpu driver that isn't mesa etc.

Maybe krh or olv will answer on how these things work.

Dave.