[Mesa-dev] Zero-Copy Texture usage from OpenCL

Tapani Pälli tapani.palli at intel.com
Mon Jun 3 10:18:33 UTC 2019

On 6/3/19 1:17 PM, Tapani Pälli wrote:
> Hi;
> On 5/30/19 12:03 PM, Rudrappa, Shiva Kumara wrote:
>> Hi,
>> Can someone please help to validate below MESA features.
>> “system shall allow 3D rendering to make use of OpenCL buffers in a 
>> zero-copy manner”
>> “system shall allow 3D rendering to make use of Media SDK buffers in a 
>> zero-copy manner.”
> I'm not entirely sure what the actual feature description here is but 
> these features go through the stack and need implementation in OpenCL 
> and Media SDK stacks + graphics allocator (minigbm, gralloc) as well. So 
> this is not just a 'MESA feature'. Perhaps some clarification of the 
> features would make the whole thing easier to validate.
> I'm guessing that by 'system shall allow 3D rendering to make use of 
> Media SDK buffers' it is meant that Mesa driver can create a texture out 
> of buffer that contains video frame that Media SDK has produced. Mesa 
> side of this use-case can be validated as example using Piglit test 
> 'ext_image_dma_buf_import-sample_yuv' but it assumes that Media SDK is 
> capable is producing similar buffers as what the test is using.

Oops, wanted to add that if you are validating things on Android, CTS 
contains tests that utilize Media + GL stack and validate the media 

> Thanks;
> // Tapani
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