Re: [RfC PATCH] drm: fourcc byteorder: brings header file comments in line with reality.

[Michel DÃnzer]

On 18/04/17 07:14 PM, Gerd Hoffmann wrote:
>   Hi,
> 
>>> Quite true that this proves nothing. However one should note that
>>> fbcon -> fbdev works,
>>
>> BTW, this supports Gerd's patch, since the KMS fbdev emulation code uses
>> e.g. DRM_FORMAT_XRGB8888 for depth/bpp 24/32, and the fbdev API uses
>> native endian packed colour values.
> 
> Same is true for DRM_IOCTL_MODE_ADDFB, with depth/bpp 24/32 you'll get
> DRM_FORMAT_XRGB8888 (only DRM_IOCTL_MODE_ADDFB2 allows userspace specify
> fourcc formats directly).

Right, and since all major Xorg drivers use DRM_IOCTL_MODE_ADDFB,
they're effectively using DRM_FORMAT_XRGB8888 as native endianness as well.


-- 
Earthling Michel DÃnzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer