[Mesa-dev] [PATCH] [RFC] egl: propose simple EGL_MESA_image_dma_buf_export v2.2

[Chad Versace]

On 03/03/2015 11:01 AM, Daniel Stone wrote:
> Hi,
> 
> On 3 March 2015 at 18:40, Chad Versace <chad.versace at intel.com> wrote:
>> On 03/03/2015 12:13 AM, Daniel Stone wrote:
>>> On Tuesday, March 3, 2015, Dave Airlie <airlied at gmail.com <mailto:airlied at gmail.com>> wrote:
>>>     +    EGLBoolean eglExportDMABUFImageQueryMESA(EGLDisplay dpy,
>>>     +                                  EGLImageKHR image,
>>>     +                                 int *fourcc,
>>>     +                                 int *num_planes);
>>>
>>>
>>> Shouldn't this contain the modifier(s) as well?
>>
>> What is the motivation for defining two export calls, and exporting
>> a subset of information from each call? I don't understand why the
>> fourcc values are exported by one call, but the strides exported a
>> separate call.
> 
> Querying the image gives you what you need in order to know if you can
> actually deal with the image, before you go to all the effort of
> exporting it.

Thanks. That makes sense.