Public bug reported: We don't have a native GpuMemoryBuffer implementation in Oxide, instead falling back to the software implementation (using shared memory).
chrome://tracing/ shows there's a lot of contention for the GPU thread on the phone, and a not-insignificant cause of this is texture uploads. Having a native GpuMemoryBuffer implementation would significantly improve this. What we needs is a graphics buffer that we can: - Rasterize directly to - Share between processes - Use as a source for EGLImage https://01.org/blogs/2016/native-one-copy-texture-uploads-for-chrome-OS has some information about how this is implemented on the various Chrome platforms. The attached photo (sorry, no screenshots on Freiza) shows an instance where the GPU thread is blocked for around 10ms just doing texture uploads. ** Affects: oxide Importance: High Status: Triaged ** Attachment added: "IMAG0224.jpg" https://bugs.launchpad.net/bugs/1553302/+attachment/4588520/+files/IMAG0224.jpg ** Changed in: oxide Importance: Undecided => Critical ** Changed in: oxide Importance: Critical => High ** Changed in: oxide Status: New => Triaged -- You received this bug notification because you are a member of Ubuntu WebApps bug tracking, which is subscribed to Oxide. https://bugs.launchpad.net/bugs/1553302 Title: Native GpuMemoryBuffer implementation for the phone Status in Oxide: Triaged Bug description: We don't have a native GpuMemoryBuffer implementation in Oxide, instead falling back to the software implementation (using shared memory). chrome://tracing/ shows there's a lot of contention for the GPU thread on the phone, and a not-insignificant cause of this is texture uploads. Having a native GpuMemoryBuffer implementation would significantly improve this. What we needs is a graphics buffer that we can: - Rasterize directly to - Share between processes - Use as a source for EGLImage https://01.org/blogs/2016/native-one-copy-texture-uploads-for-chrome- OS has some information about how this is implemented on the various Chrome platforms. The attached photo (sorry, no screenshots on Freiza) shows an instance where the GPU thread is blocked for around 10ms just doing texture uploads. To manage notifications about this bug go to: https://bugs.launchpad.net/oxide/+bug/1553302/+subscriptions -- Mailing list: https://launchpad.net/~ubuntu-webapps-bugs Post to : ubuntu-webapps-bugs@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-webapps-bugs More help : https://help.launchpad.net/ListHelp
