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Graphics: Intel and Zink Progress

Submitted by Roy Schestowitz on Thursday 1st of April 2021 06:22:53 PM Filed under
Graphics/Benchmarks
  • Intel's Vulkan Driver Adds Conservative Rasterization - Helps DXVK/VKD3D For Linux Gaming - Phoronix

    Intel's open-source "ANV" Vulkan driver now supports the Vulkan EXT_conservative_rasterization extension that is most notably used by DXVK for translating Direct3D atop this graphics API and work is also pending too for VKD3D.

    The conservative rasterization extension was introduced back in Vulkan 1.0.67 from early 2018. The conservative rasterization mode allows for over or under estimation for limiting the rasterization process and ensuring certainty over the rendering behavior.

  • Intel Wraps Up Linux 5.13 Graphics Driver Development By Preparing For Future Hardware - Phoronix

    The past several weeks have seen a few rounds of Intel graphics driver changes sent in to DRM-Next ahead of the Linux 5.13 cycle. This Linux 5.13 Intel graphics driver work has included Alder Lake S enablement and other feature changes. A final batch of "feature" work was sent out this morning for targeting the Intel kernel graphics driver in Linux 5.13.

    This final patch of Intel i915 kernel graphics driver changes for targeting Linux 5.13 is "a pull request of refactoring both to clean up and prepare for future."

  • Intel Graphics Compiler 1.0.6748 Released With CM-CL Library - Phoronix

    Intel's open-source developers have released a new version of IGC, the Intel Graphics Compiler that is used by their open-source Linux compute stack, recently was transitioned for use by their Windows driver too, and might eventually be piped into their Mesa OpenGL/Vulkan drivers.

    We haven't heard anything or seen any new code over the past quarter for integrating IGC into Mesa, so it's not clear where those plans stand at the moment. But in any case this open-source graphics compiler remains central to their Linux compute stack for OpenCL and oneAPI Level Zero. IGC 1.0.6748 was released this week as their latest tagged version.

  • Mike Blumenkrantz: A Reminder

    I was recently interviewed by Boiling Steam, a small Linux gaming-oriented news site focused on creating original content and interviewing only the most important figures within the community (like me). If you’ve ever wanted to know more about the rich open source pedigree of Super Good Code, the interview goes deep into the back catalogue of how things got to this point.

  • Mike Blumenkrantz: Description

    Last time, I talked a bit about descriptors 3.0: lazy descriptors. The idea I settled on here was to do templated updates, and to do the absolute minimal amount of work possible for each draw while still never reusing any written-to descriptor sets once they’d been cycled out.

    Lazy descriptors worked out great, and I’m sure many of you have grown to enjoy the ZINK: USING LAZY DESCRIPTORS log message that got spammed on startup over the past couple months of zink-wip.

    [...]

    The goal of zink-wip is to provide an optimal testing environment with the absolute bleeding edge in terms of performance and features. The auto mode should provide that, and the cases I’ve seen where its performance is noticeably worse number exactly one, and it’s a subtest for drawoverhead. If anyone finds any other cases where auto is worse than lazy, I’m interested, but it shouldn’t be a concern.

    With that said, it might be worth doing some benchmarking between the two for some extremely high CPU usage scenarios, as that’s the only case where it may be possible to detect a difference. Gone are the days of zink(-wip) hogging the whole CPU, so probably this is just useless pontificating to fill more of a blog page.

    But also, if you’re doing any kind of benchmarking on a high-end CPU, I’d probably recommend going with the lazy mode for now.

»

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