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Graphics: RADV, Intel, and Vulkan

Submitted by Roy Schestowitz on Friday 3rd of December 2021 02:12:55 AM Filed under
Graphics/Benchmarks
  • RADV Driver Improvement Yields More Reasonably Sized Captures For Radeon GPU Profiling - Phoronix

    When debugging graphics driver/API issues or performance profiling and relying on shader dumps, the size of such dumps can quickly add up due to all of the state collected, etc, but also inefficiencies when not within contiguous memory. Fortunately for Mesa's Radeon Vulkan driver "RADV" for pairing with the Radeon GPU Profiler there is a significant improvement that just landed for yielding smaller file sizes.

    The change that landed in Mesa 22.0-devel is for uploading shader binaries of a pipeline contiguously in memory. AMD's Radeon GPU Profiler expects shaders to be in contiguous memory otherwise the captures are quite huge with many holes. With the change by Valve developer Samuel Pitoiset, the RADV driver will now provide them in contiguous memory.

  • Intel Graphics Compiler Makes More Preparations For DG2/Alchemist & Ponte Vecchio - Phoronix

    At the end of November was a big update to Intel's Graphics Compiler while out today is IGC 1.0.9441 as the first update since to this open-source, cross-platform graphics compiler.

    Going along with recent activity around DG2/Alchemist from this Intel compute stack code down through other activity around Intel's kernel graphics driver and their Mesa OpenGL/Vulkan drivers, that frenzy of work has continued this week along with specifically calling out changes for "PVC" -- Ponte Vecchio (Xe HPC).

  • Samuel Iglesias: VK_EXT_image_view_min_lod Vulkan extension released

    One of the extensions released as part of Vulkan 1.2.199 was VK_EXT_image_view_min_lod extension. I’m happy to see it published as I have participated in the release process of this extension: from reviewing the spec exhaustively (I even contributed a few things to improve it!) to developing CTS tests for it that will be eventually merged to the CTS repo.

    This extension was proposed by Valve to mirror a feature present in Direct3D 12 (check ResourceMinLODClamp here) and Direct3D 11 (check SetResourceMinLOD here). In other words, this extension allows clamping the minimum LOD value accessed by an image view to a minLod value set at image view creation time.

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