4 ms·
So what happens when you have dambufs that don't allow for CPU access.
by stefan_ 7y ago
So what happens when you have dambufs that don't allow for CPU access.
- megous 7y agoCopy data via DMA first?
- emersion 7y agoThis isn't supposed to happen. Worst case scenario, the DMA-BUF is copied internally in the GPU from hidden memory to visible memory, and then back to the CPU. Being able to export a DMA-BUF is necessary anyway for multi-GPU setups. EDIT: fixed a s/GPU/CPU/ typo