X.Org Server Lands Big Improvement For Using Zink With GLAMOR
([X.Org] 3 Hours Ago
DMA-BUF On Zink With GLAMOR)
- Reference: 0001558398
- News link: https://www.phoronix.com/news/X.Org-GLAMOR-Zink-DMA-BUF
- Source link:
A nice improvement was merged today to the X.Org Server for benefiting the GLAMOR 2D acceleration code when using the Zink OpenGL-on-Vulkan driver.
GLAMOR provides generic 2D acceleration for the X.Org Server using OpenGL. Zink provides generic OpenGL over Vulkan API support and is part of Mesa. Now with this newly-merged code, DMA-BUF buffer sharing is enabled when using Zink with GLAMOR for more efficient handling.
The merged code is simply white-listing the Zink driver and follows the Intel driver already being white-listed and optionally enabled as an experimental feature atop other drivers for allowing more efficient buffer object sharing with DMA-BUF.
Faith Ekstrand of Collabora authored the change three months ago and commented in the [1]merge request :
"Zink badly needs dma-buf and modifiers as it can't handle BO import of tiled buffers without modifiers.
...
Honestly, this is looking really stable. I've tested with both KDE and GNOME and neither ever allocates a linear image. Someone should probably test with some more X11ish things to make sure it doesn't break non-composited environments, though.
...
I dropped the Draft. I've been running this for a bit on my desktop and a few other people have put it through its paces as well. I think it's safe to flip the switch."
As of this morning the code is now in X.Org Server Git for enabling Zink with DMA-BUF for GLAMOR.
[1] https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1857
GLAMOR provides generic 2D acceleration for the X.Org Server using OpenGL. Zink provides generic OpenGL over Vulkan API support and is part of Mesa. Now with this newly-merged code, DMA-BUF buffer sharing is enabled when using Zink with GLAMOR for more efficient handling.
The merged code is simply white-listing the Zink driver and follows the Intel driver already being white-listed and optionally enabled as an experimental feature atop other drivers for allowing more efficient buffer object sharing with DMA-BUF.
Faith Ekstrand of Collabora authored the change three months ago and commented in the [1]merge request :
"Zink badly needs dma-buf and modifiers as it can't handle BO import of tiled buffers without modifiers.
...
Honestly, this is looking really stable. I've tested with both KDE and GNOME and neither ever allocates a linear image. Someone should probably test with some more X11ish things to make sure it doesn't break non-composited environments, though.
...
I dropped the Draft. I've been running this for a bit on my desktop and a few other people have put it through its paces as well. I think it's safe to flip the switch."
As of this morning the code is now in X.Org Server Git for enabling Zink with DMA-BUF for GLAMOR.
[1] https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1857
xpris