DMA-BUF Zero-Copy Render Pipeline for Workspace Overview#11
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Totally overhauls the Workspace Overview capture loop by migrating from a CPU-bound Shared Memory
wl_shmcapture mechanism to a fully hardware-accelerated DMA-BUF pipeline.By keeping window captures entirely on the GPU via
libdrmandgbm, we completely eliminate massive PCI-e memory copying overhead and unblock the UI thread.