Re: Is support for DMA-BUF possible or planned?
Jan Beich <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.x11 |
|---|---|
| Message-ID | <[email protected]> |
(redirecting from desktop@ list) Vasily Postnicov <[email protected]> writes: > Hi! I maintain my own port of webkitgtk. In version 2.44.0 WebKit's > developers broke WebGL support on systems which do not have DMA-BUF (all > systems but Linux, maybe). Is support for DMA-BUF possible or planned in > FreeBSD as a part of the Linux compatibility layer? DMA-BUF works fine natively and required by DRI3, EGL + VA-API interop, Wayland. Explicit sync isn't supported yet, see https://github.com/freebsd/drm-kmod/issues/278 Note, DMA-BUF on NVIDIA GPUs requires installing nvidia-drm-kmod package. <dma-buf.h> header only provides *_SYNC and *_SYNC_FILE ioctls. Consumers like Mesa usually bundle the header or the relevant macros like in x11-wm/magpie/files/patch-cogl_cogl_cogl-dma-buf-handle.c (based on bug 271823). *_SYNC may be broken per https://github.com/FreeBSDDesktop/kms-drm/issues/156 but nothing critical depends on it and likely obsoleted by *_SYNC_FILE, anyway. Related: https://github.com/dragonflybsd/dragonflybsd/tree/master/sys/dev/drm/linux_dma-buf.c https://github.com/freebsd/drm-kmod/tree/master/drivers/dma-buf/dma-buf.c https://github.com/evadot/drm-subtree/tree/master/drmkpi/drmcompat_dma_buf.c https://github.com/NetBSD/src/blob/trunk/sys/external/bsd/drm2/linux/linux_dma_buf.c