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Graphics: Nouveau and 'Open-Source Technology Center'

Submitted by Roy Schestowitz on Sunday 6th of January 2019 08:07:03 AM Filed under
Graphics/Benchmarks
  • Google Devs Call Open-Source NVIDIA Driver Unstable, Nouveau Blacklisted By Chrome

    Google developers working on the Chrome/Chromium web-browser have decided to blacklist the Nouveau driver from having GPU acceleration by default within their web-browser.

    As another blow to this open-source NVIDIA Linux graphics driver, Google developers have deemed Nouveau too unstable to support for their users. This bug report seems to be the most recent that set it off though one of the Google developers in there acknowledged, "Over the years we receive many bug reports related to nouveau driver stability, so we draw the conclusion nouveau is unstable not just from this bug report, but from a aggregation of many."

    Of the bug reports for Nouveau with WebGL / GPU acceleration, it mostly seems to stem from users on distributions with outdated Mesa builds... The vastly outdated Mesa builds.

  • Intel Graphics Engine-Reset Functionality Driver Work Revived

    In early 2017 was when there was initial work underway for the Intel Linux graphics driver on a new engine reset capability for Broadwell "Gen 8" hardware and newer. This capability allows for per-engine resets rather than resorting to a full GPU reset in the case of hangs. The code at the time didn't end up being merged to the Linux kernel but there is now a revised implementation.

    The new patches for engine-reset support was done by Carlos Santa of Intel's Open-Source Technology Center. The effect is still the same that in the case of hangs for a particular part of a GPU, such as the media engine, it can be reset by itself rather than resetting the whole GPU to recover from a hang. The primary motivation for this does appear to be around the media engine potentially hanging. A few months ago were more details on this GPU reset approach.

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More NVIDIA and Intel Graphics Driver Work

Submitted by Roy Schestowitz on Sunday 6th of January 2019 02:02:09 PM.
  • NVIDIA have put out a new Vulkan beta driver with better pipeline creation performance

    It seems to be a busy weekend! NVIDIA have put out a new version of their Vulkan beta driver and it's an interesting one.

    Today, NVIDIA 415.22.05 became available and as expected of this driver series it adds in new Vulkan extensions. Specifically, it adds support for VK_KHR_depth_stencil_resolve, VK_EXT_buffer_device_address, VK_EXT_memory_budget, VK_EXT_memory_priority (only for Windows currently) and VK_EXT_pci_bus_info.

    The extra interesting bit is the improvement they listed in this driver version. They mention that it has "Better pipeline creation performance when there is a cache hit" so it will be an interesting driver to test out. Good to see NVIDIA continue working on performance!

  • Intel Graphics Driver Working On FP16 Visual Support For Handling Wide Color Gamut

    Besides the Intel engine-reset graphics driver work, some other interesting activity to report on this weekend in the Intel open-source Linux graphics driver space is the FP16 visual and frame-buffer configuration support that recently debuted.

    This FP16 visuals work is intended to be used with the likes of EXT_surface_SMPTE2086_metadata and EXT_gl_colorspace_scrgb extensions, albeit not implemented yet. Once those extensions are implemented it can yield support for Android wide-color gamut support and related wide-color scenarios where 16-bit per channel color depth is desired.

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