tree bdf02d85536397ca0b954ecd6e6adef09703aeb6
parent 58893c11e2bf9dd71b6eca875c1fce785b75a165
author Jonas Larsson <ljonas@google.com> 1606953751 -0800
committer Jonas Larsson <ljonas@google.com> 1606954078 -0800

gldownload: accelerate with dma-buf textures

For the formats supported by the GPU stack, allocate dma-bufs for
the texture to download and have upstream render to it. Downloading
then becomes the task to sync dma-buf access before CPU acces (mmap).

Note:
Currently driver supports only RGBA/BGRA, not RGB/BGR.

Change-Id: I04d45d2ba0780a60f5be22b5a48a4c8ba6ca69c7