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As someone who is working with X11, I strongly disagree. It really needs replacing badly. It doesn't even work; only a few code paths even get tested on for exa

As someone who is working with X11, I strongly disagree. It really needs replacing badly. It doesn't even work; only a few code paths even get tested on for example GLX, which is why complex X11 apps like browsers need blacklists. > There is a reason why Intel still stuffs the i368 instruction set in their processors If you want a CPU analogy, Wayland is more like ARMv8, which was mostly a clean break in terms of the AArch64 ISA, but which still supports 32-bit at the process level. 32-bit and 64-bit code cannot be intermixed in the same address space, but you can run 32-bit and 64-bit apps simultaneously on the same OS, analogously to the way you can run X11 and Wayland apps on the same Wayland desktop using Xwayland. This actually worked out beautifully, and I would have preferred that x86 had followed the same trajectory.

vrodic 7y ago
> As someone who is working with X11, I strongly disagree. It really needs replacing badly. It doesn't even work; only a few code paths even get tested on for example GLX, which is why complex X11 apps like browsers need blacklists. Blacklists are needed because OpenGL drivers for specific hardware have bugs and can have missing functionality. Those can affect Wayland too, since the same drivers are used. Modern Xorg supports direct rendering well, Keith Packard authored a lot of modernized infrastructure such as DRI2/DRI3, and even support for VR (work he's been doing for Valve). There's also the important VK_display_timing extension implementation he's done with Croateams Alen Ladavac: https://twvideo01.ubm-us.net/o1/vault/gdc2018/presentations/Ladavac_Alen_ElusiveFrameTiming.pdf https://twvideo01.ubm-us.net/o1/vault/gdc2018/presentations/... on Xorg Sadly, I don't see much more recent activity from him or Alen about these topics, but it shows that Xorg is still the main platform of inovation for Linux real-time graphics needs.

vrodic 7y ago

> As someone who is working with X11, I strongly disagree. It really needs replacing badly. It doesn't even work; only a few code paths even get tested on for example GLX, which is why complex X11 apps like browsers need blacklists. Blacklists are needed because OpenGL drivers for specific hardware have bugs and can have missing functionality. Those can affect Wayland too, since the same drivers are used. Modern Xorg supports direct rendering well, Keith Packard authored a lot of modernized infrastructure such as DRI2/DRI3, and even support for VR (work he's been doing for Valve). There's also the important VK_display_timing extension implementation he's done with Croateams Alen Ladavac: https://twvideo01.ubm-us.net/o1/vault/gdc2018/presentations/Ladavac_Alen_ElusiveFrameTiming.pdf https://twvideo01.ubm-us.net/o1/vault/gdc2018/presentations/... on Xorg Sadly, I don't see much more recent activity from him or Alen about these topics, but it shows that Xorg is still the main platform of inovation for Linux real-time graphics needs.