[Mesa-stable] [Mesa-dev] [PATCH 5/7] i965/screen: Don't advertise support for RG formats

[Daniel Stone]

Right, it's a feature we use, because we do all import them as separate
EGLImages ... and we won't if it's not advertised.

On Wed, 6 Jun 2018, 7:05 pm Jason Ekstrand, <jason at jlekstrand.net> wrote:

> On Wed, Jun 6, 2018 at 11:03 AM, Jason Ekstrand <jason at jlekstrand.net>
> wrote:
>
>> On Wed, Jun 6, 2018 at 11:00 AM, Daniel Stone <daniel at fooishbar.org>
>> wrote:
>>
>>> Sorry, but as written this will regress ability to import NV12 images as
>>> separately-addressed planes with shader conversion to RGB; Kodi, Mutter and
>>> Weston all use this.
>>>
>>
>> I don't believe it will.  It only makes it so that we don't advertise R
>> and RG formats through eglQueryDmaBufFormatsEXT.  This means that you can't
>> import the planes each as separate images but you can still import a planar
>> image.
>>
>
> Arguably, though, importing the planes as separate images does sound like
> a feature...
>
>
>
>> --Jason
>>
>>
>>
>>> On Wed, 6 Jun 2018, 6:48 pm Jason Ekstrand, <jason at jlekstrand.net>
>>> wrote:
>>>
>>>> Cc: mesa-stable at lists.freedesktop.org
>>>> ---
>>>>  src/mesa/drivers/dri/i965/intel_screen.c | 12 ++++++++++++
>>>>  1 file changed, 12 insertions(+)
>>>>
>>>> diff --git a/src/mesa/drivers/dri/i965/intel_screen.c
>>>> b/src/mesa/drivers/dri/i965/intel_screen.c
>>>> index 5f0eeb41779..f681b221e7b 100644
>>>> --- a/src/mesa/drivers/dri/i965/intel_screen.c
>>>> +++ b/src/mesa/drivers/dri/i965/intel_screen.c
>>>> @@ -1269,6 +1269,18 @@ intel_image_format_is_supported(const struct
>>>> intel_image_format *fmt)
>>>>         fmt->fourcc == __DRI_IMAGE_FOURCC_SABGR8888)
>>>>        return false;
>>>>
>>>> +   /* The dri_interface.h file says:
>>>> +    *
>>>> +    *    "R8, GR88 and NONE should not be used with
>>>> createImageFromName or
>>>> +    *    createImage, and are returned by query from sub images
>>>> created with
>>>> +    *    createImageFromNames (NONE, see above) and fromPlane (R8 &
>>>> GR88)."
>>>> +    *
>>>> +    * Let's not advertise support for R or RG formats.
>>>> +    */
>>>> +   if (fmt->components == __DRI_IMAGE_COMPONENTS_R ||
>>>> +       fmt->components == __DRI_IMAGE_COMPONENTS_RG)
>>>> +      return false;
>>>> +
>>>>     return true;
>>>>  }
>>>>
>>>> --
>>>> 2.17.1
>>>>
>>>> _______________________________________________
>>>> mesa-dev mailing list
>>>> mesa-dev at lists.freedesktop.org
>>>> https://lists.freedesktop.org/mailman/listinfo/mesa-dev
>>>>
>>>
>>
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