[Intel-gfx] Does display engine read contents from LLC of scanout buffer?

[Weng, Chuanbo]

Hi all,
               I have a question of display (forgive me if it's too simple because I'm not familiar with display):

               My scenario is as below:
                              gbm_bo_create to create gbm_bo
                              Get its handle
                              drmModeAddFB to specify this bo as scanout buffer
                              do rendering to this bo by OpenCL(Beignet)
                              drmModePageFlip to do page flip

               Does display engine directly read contents from scanout buffer or read contents from LLC of this
scanout buffer?
               Environment:
                              SKL GT2, on console mode(no X).

Thanks,
Chuanbo Weng


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