# Mesa 26.1.1 Release Notes / 2026-05-19

Mesa 26.1.1 is a bug fix release which fixes bugs found since the 26.1.0 release.

Mesa 26.1.1 implements the OpenGL 4.6 API, but the version reported by glGetString(GL_VERSION) or glGetIntegerv(GL_MAJOR_VERSION) / glGetIntegerv(GL_MINOR_VERSION) depends on the particular driver being used. Some drivers don’t support all the features required in OpenGL 4.6. OpenGL 4.6 is only available if requested at context creation. Compatibility contexts may report a lower version depending on each driver.

Mesa 26.1.1 implements the Vulkan 1.4 API, but the version reported by the apiVersion property of the VkPhysicalDeviceProperties struct depends on the particular driver being used.

## SHA checksums

    SHA256: 8bd36c031cc6d0edfec04617527609454ee3a09ad53bdf983b45fc2c1e129b2e  mesa-26.1.1.tar.xz
    SHA512: 384a7db33d2f06e287337329f2f17503082ba6b1cd876a1884e940fdb6193ffae6d6b14344625256f3b3b39972ad697130a4d2ea25c40979f7aa76c2176f7988  mesa-26.1.1.tar.xz

## New features

- None

## Bug fixes

- Broken rendering in Isonzo (Unity) since vulkan-radeon 26.1.0

- [VAAPI] VRAM leak on Polaris, 26.1 regression

- iris: unhandled -EAGAIN in iris_batch_flush (26.1 regression)

- llvm23 commit d50631f breaks build of ac_llvm_helper.cpp

- nvk: various float_controls cts test fails on Turing only

- tu: assertions in ir3_ra.c: Assertion `physreg != (physreg_t)~0’ failed

## Changes

Benjamin Cheng (2):

- ac/parse_ib: Add parsing for variable slice mode

- radeonsi/video: Cleanup dpb buffer

Calder Young (2):

- anv: Fix some usage flags not propagated to ISL for explicit layouts

- spirv: Fix debugPrintfEXT not working with multiple arguments

Christoph Pillmayer (1):

- pan/kmod: Fix uninitialized timestamp info

Danylo Piliaiev (2):

- tu/a8xx: Fix reading border_color from sampler memory

- tu: Always lazy_init_vsc for tiler rendering

Dave Airlie (2):

- nak: fix image size for multisample arrays

- nak: add more sizes to assert in bindless_image_sparse_load

David Rosca (1):

- radeonsi/uvd_enc: Skip extra padding bytes in output bitstream

Dmitry Osipenko (1):

- intel/virtio: Preserve errno properly when handling ioctl

Emma Anholt (1):

- tu: Set HALF_PRECISION on blits to R11G11B10.

Eric Engestrom (4):

- docs: add sha sum for 26.1.0

- .pick_status.json: Update to b1083190d02cb244718816dded908088959d8054

- docs: fix unescaped `*`

- etnaviv: initialize value before calling etna_gpu_get_param(), in case it fails

Erik Faye-Lund (8):

- mesa/main: remove stale prototypes

- mesa/main: remove incorrect debug-output

- Revert “mesa: check for ARB_ES3_compatibility in format checks”

- mesa/main: remove unused array

- pan/ci: add missing gitlab rules

- pan/ci: remove outdated gitlab rule

- pan/ci: add missing gitlab rule

- pan/ci: fix gitlab rules after move

Frank Binns (1):

- pvr/ci: drop two tests from bxs-4-64-{fails,flakes}

Georg Lehmann (5):

- nir: fix fp_math_ctrl in fisnan

- radv: fix amount of sample shading with required sample shaded inputs

- aco/tests: use explicit lod in sparse texture test

- ac/nir/lower_tex_coords: fix optimizing cube txd to tex

- spirv: always preserve infinities for FMin, FMax and FClamp

Hans-Kristian Arntzen (1):

- wsi/common: Report correct time domain in VkPresentTimingInfo.

Iago Toral Quiroga (1):

- pan/bi: TEX_GRADIENT may need helper invocations

Ian Romanick (1):

- brw: Calcuate divergence before brw_from_nir

Icenowy Zheng (6):

- pvr: setup viewindex if the shader wants it even when multiview disabled

- pvr: fix handling of invalid attachment info in pvr_init_fs_outputs_mrt

- pvr: copy sub_cmd flags except owned when executing subcmds out of pass

- pvr: stop to derive rt datasets based on geometry_terminate

- pvr: add a structure containing data kept for suspended renderpasses

- pvr: preserve and pass more data for suspending render passes

Job Noorman (2):

- ir3: don’t cache driver param instructions

- freedreno/computerator: fix UAV view size

Jon Turney (4):

- glx/windows: Avoid shadowing ‘type’ parameter of driwindowsCreateDrawable()

- glx/windows: Fix compilation of driwindows_glx after driscreen changed from pointer to member

- glx/windows: Fix compliation after code motion to put event base in ‘dri’ context

- glx/windows: Drop static from driwindowsCreateScreen()

Jose Maria Casanova Crespo (2):

- v3dv: include mem_offset in vkCmdFillBuffer destination

- v3dv: avoid duplicate bo_handles between cpu_job and CSD lists

Karol Herbst (5):

- nir/lower_cl_images: call nir_progress on every function

- gallivm/nir/soa: use uint for booleans

- llvmpipe: never pass a NULL function name to LLVMAddFunction

- clc: do not use std::filesystem

- Revert “rusticl: link the C++ runtime statically”

Lionel Landwerlin (5):

- vulkan/runtime: fix invalid address flags value for CmdCopyBufferToImage2

- anv: fixup null address check

- anv: implement missing device image property compression filtering

- anv: add SIMD32 requirement heuristic for Dragon Dogma 2

- anv: bump max compute workgroup count

Lone_Wolf (1):

- ac/llvm: fix build with LLVM 23 (MCSubtargetInfo)

Lorenzo Rossi (1):

- pan/compiler/lower_fs_inputs: Do not trust slot->alu_type

Marc Alcala Prieto (1):

- pan/decode: Support INTERLEAVED_64K Z/S target dumps

Marek Olšák (1):

- radeonsi: fix a typo in si_shader_update_spi_shader_formats

Mary Guillemard (4):

- nir/lower_bit_size: Preserve float controls when lowering alu ops

- nvk: Handle foreign queue dependencies

- nvk: Handle host accesses barrier

- nvk: Multiply by local_size for CS invocations in DGC codepath

Matthieu Oechslin (1):

- r600: Fix crash on R600/R700 with custom border color

Mel Henning (2):

- nvk: Add a wfi for blackwell in CmdDispatchIndirect

- nvk: Disable compression on Turing

Mike Blumenkrantz (5):

- lavapipe: update cbuf count when remapping attachments

- lavapipe: unset attachment remap state if pColorAttachmentLocations==NULL

- lavapipe: fix setting colormasks when attachments get remapped

- zink: fix mixing of mesh descriptor bindings with gfx bindings

- meson: fix renderdoc integration define

Nemallapudi, Jaikrishna (1):

- intel/dev: fix timebase_scale ticks-to-ns precision loss across 2^32

Paulo Zanoni (1):

- intel/nir: fix sparse shadow comparison for BRW

Rhys Perry (2):

- aco/ra: test the register file in get_reg_specified() when necessary

- aco/ra: don’t rename phi operands in get_reg_phi()

Samuel Pitoiset (6):

- radv: do not fallback to compute for image->buffer copies with emulated formats

- spirv: preserve the explicit stride for untyped pointers with matrices

- radv: fix another case of VRS with mipmaps on GFX10.3

- radv: fix copying acceleration structure with DAC

- nir: fix shuffling local IDs for quad derivatives with larger workgroup sizes

- radv: enable radv_wait_for_vm_map_updates for Forza Horizon 6

Valentine Burley (1):

- tu/autotune: Clear active_batches before history objects are freed

Yiwei Zhang (1):

- venus: fix a renderer side queue timeline bound race

hwandy (1):

- Revert “intel/decoder: make libvulkan_intel to depend on stub decoder when buildtyle=release.”

johniyoods (1):

- egl/dri2: require valid render fd before advertising EGL_WL_bind_wayland_display

llyyr (1):

- vulkan/wsi/wayland: use mtx helpers in wait_for_present2

yserrr (1):

- llvmpipe: fix UB and incorrect value in compute caps shift