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Mesa 21.0.0 RC1 and More on Mesa, Panfrost/Bifrost

Submitted by Roy Schestowitz on Thursday 14th of January 2021 05:38:15 AM Filed under
Graphics/Benchmarks
  • [Mesa-dev] [ANNOUNCE] mesa 21.0.0-rc1
    Hi list,

It's that time again, the mesa 21.0 release release candidate cycle has
begun. The first release candidate is available, and the blocking
milestone has already been created. Please be sure to add any issues you
want resolved before 21.0.0 is released.

Cheers,
Dylan
  • Mesa 21.0-rc1 Released To Get The Quarterly Release Process Underway

    While normally the feature branching and first release candidate for new Mesa3D quarterly releases doesn't begin until around the end of the first month of a new quarter, this time around with Mesa 21.0 it has begun today -- half-way through the month of January. This should at least ensure Mesa 21.0 stable ships in February rather than March. Mesa 20.3.3 was also released today as the newest stable version for the time being.

  • Mesa 21.0-devel RADV vs. AMDVLK 2021.Q1.1 Vulkan Driver Performance - Phoronix

    For those wondering how the open-source Radeon Vulkan drivers of Mesa's RADV and AMD's official AMDVLK are competing as we start the new year, here are some fresh benchmarks looking at the performance for various Linux games (native and via Steam Play with DXVK) as well as Vulkan compute tests.

  • Desktop OpenGL 3.1 on Mali GPUs with Panfrost

    The open source Panfrost driver for Arm Mali Midgard and Bifrost GPUs now provides non-conformant OpenGL ES 3.0 on Bifrost and desktop OpenGL 3.1 on Midgard (Mali T760 and newer) and Bifrost, in time for Mesa's first release of 2021.

    This follows the OpenGL ES 3.0 support on Midgard that landed over the summer, as well as the initial OpenGL ES 2.0 support that recently debuted for Bifrost. OpenGL ES 3.0 is now tested on Mali G52 in Mesa's continuous integration, achieving a 99.9% pass rate on the corresponding drawElements Quality Program tests.

    Architecturally, Bifrost shares most of its fixed-function data structures with Midgard, but features a brand new instruction set. Our work for bringing up OpenGL ES 3.0 on Bifrost reflects this division. Some fixed-function features, like instancing and transform feedback, worked without any Bifrost-specific changes since we already did bring-up on Midgard. Other shader features, like uniform buffer objects, required "from scratch" implementations in the Bifrost compiler, a task facilitated by the compiler's maturing intermediate representation with first-class builder support. Yet other features like multiple render targets required some Bifrost-specific code while leveraging other code shared with Midgard. All in all, the work progressed much more quickly the second time around, a testament to the power of code sharing. But there is no need to limit sharing to just Panfrost GPUs; open source drivers can share code across vendors.

  • Rosenzweig: Desktop OpenGL 3.1 on Mali GPUs with Panfrost

    Alyssa Rosenzweig presents a progress report on the Panfrost driver for Arm Mali Midgard and Bifrost GPUs, which now provides non-conformant OpenGL ES 3.0 on Bifrost and desktop OpenGL 3.1 on Midgard.

»

Desktop OpenGL 3.1 on Mali GPUs with Panfrost

Submitted by Roy Schestowitz on Thursday 14th of January 2021 05:53:23 PM.
  • Desktop OpenGL 3.1 on Mali GPUs with Panfrost

    Mesa’s shared code also extends to OpenCL support via Clover. Once a driver supports compute shaders and sufficient compiler features, baseline OpenCL is just a few patches and a bug-fixing spree away. While OpenCL implementations could be layered (for example with clvk), an open source Mesa driver avoids the indirection.

    I would like to thank Collaboran Boris Brezillon, who has worked tirelessly to bring OpenGL ES 3.0 support to Bifrost, as well as the prolific Icecream95, who has spearheaded OpenCL and desktop OpenGL support.

Mali Midgard and Bifrost GPUs to get OpenGL 3.1 with Mesa 21.0

Submitted by Roy Schestowitz on Thursday 14th of January 2021 07:38:24 PM.
  • Mali Midgard and Bifrost GPUs to get OpenGL 3.1 with Mesa 21.0 - first RC up

    With the first Mesa release of 2021 for open source Linux GPU drivers upcoming with Mesa 21.0 hitting the Release Candidate stage, Collabora have been busy bringing up OpenGL on ARM Mali GPUs.

    This is coming with the Panfrost driver, which Collabora has been working on for some time now. While not officially conformant yet as it seems they haven't gone through the conformance testing from The Khorons Group, they announced in a fresh blog post that both the Midgard and Bifrost GPU generation will see "non-conformant OpenGL ES 3.0 on Bifrost and desktop OpenGL 3.1 on Midgard (Mali T760 and newer) and Bifrost".

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