Mesa 26.1.7 Release Notes / 2026-08-12 — The Mesa 3D Graphics Library latest documentation

# Mesa 26.1.7 Release Notes / 2026-08-12

Mesa 26.1.7 is a bug fix release which fixes bugs found since the 26.1.6 release.

Mesa 26.1.7 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 26.1.7 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

    TBD.

## New features

- None

## Bug fixes

- Confidential issue #15670

- D3D12: last vertex’s non-zero-offset attribute fetched as 0 with a tightly-packed interleaved vertex buffer (AMD D3D12 only, regression since 24.1)

- RADV NIR optimization bug

- Regression: HEVC hardware decoding (VA-API) fails with “invalid UVD command 5!” on Stoney Ridge (amdgpu) in Mesa 26+

- [ANV][ARC] Space engineers 2 Artifacts

- [GR Breakpoint] Inverted frustum culling for grass meshes on Linux

- [NVK/Kepler] NAK compiler panic in assign_regs.rs: “Failed to find free register” when launching wgpu application (Zed)

- nir_opt_copy_prop_vars validation failure with Rusticl OpenCL kernel shaders

- radeonsi/VCN: HEVC VAAPI encode corrupts P-frames on Van Gogh (gfx1033) since Mesa 26.0 — I-frames and H.264 unaffected

- radeonsi: black screen in picom after ae36b9e3459766a953fe6318545463f9a773d119

- radv: descriptor heaps do not support non-uniform indexing on buffer pointers

- radv: vkCopyMemoryToImage segmentation fault with block-compressed formats when memoryRowLength is non-zero

- tu: assertions in tu_formats.cc: Assertion `fmt.fmt != FMT6_NONE’ failed

## Changes

Benjamin Cheng (2):

- ac: Fix guardband calculation for large viewports

- ac/uvd_dec: Only send SESSION_CONTEXT_BUFFER if needed

Caio Oliveira (3):

- nir, spirv: Match debug printf argument alignment with u_printf

- nir, spirv: Pad 3-component debug printf arguments to 4 components

- brw: Respect execution mask when resetting GS control data

Christian Gmeiner (2):

- etnaviv: Drop stale stream output relocs in etna_update_hwxfb(..)

- etnaviv: Turn the sampler parameter loads into constants

Connor Abbott (1):

- tu: Use correct pointer for vis stream patchpoint cs fence

Danylo Piliaiev (4):

- tu: Fix tu_event not being reset on creation

- tu: Merge disable_write_for_rp from secondary to primary

- tu: Fix memory leak of FDM patch-points

- tu: Fix vkResetQueryPool for pipeline statistics query

David Rosca (1):

- radeonsi/mm: Don’t use HEVC per slice loop filter across slices on old FW

Derek Lesho (1):

- zink: Fix zink_bo_unmap synchronization for client pointer support.

Dmitry Baryshkov (2):

- panfrost/drm-shim: go through uintptr_t when casting a query pointer

- nouveau/drm-shim: use a 64 bit constant for the VRAM BAR size

Eric Engestrom (3):

- docs: add sha sum for 26.1.6

- .pick_status.json: Update to 4e171a2330deb370bbf2c3afc1887727b9e06cbd

- .pick_status.json: Mark fa63afe272482cc8c6a1fad6f006d740173d09ca as denominated

Frank Binns (1):

- zink: gate some EXT_descriptor_indexing related code

Georg Lehmann (5):

- nir/unsigned_upper_bound: fix float to int conversions

- nir: mark some AMD specific shuffles as subgroup ops

- aco/optimizer: fix skip_smem_offset_align

- nir: support phi sources in nir_rematerialize_deref_in_use_blocks

- nir/to_lcssa: fix progress for derefs

Gyeyoung Baek (8):

- drm-shim: remove the BO’s `offset_map` entry on free

- pvr/drm-shim: fix BO refcount leak

- panfrost/drm-shim: fix BO refcount leak

- lima/drm-shim: fix BO refcount leak

- radeon/drm-shim: fix BO refcount leak

- amdgpu/drm-shim: fix BO refcount leak

- intel/drm-shim: fix BO refcount leak

- drm-shim: fix inverted BO refcounting

Ian Romanick (1):

- brw/validate: Gfx11 can’t have accumulator src0 in 3-src instructions

JaeHoon Lee (1):

- v3dv: check for a failed default attribute values allocation

Jeremy Huddleston (2):

- llvmpipe: don’t create a screen when the process is not allowed to JIT

- glx/apple: silence OpenGL deprecation warnings in libglx

Jesse Natalie (2):

- d3d12: Disable vao fast path for AMD

- mesa: Fix shared state bookkeeping for dynamic share list changes (wglShareLists)

Jose Maria Casanova Crespo (4):

- vc4: save the fragment constant buffer around the YUV blit

- vc4: unbind the textures around the blitter clears

- v3d: cap CL BO growth when doubling

- v3dv: cap CL BO growth when doubling

Karol Herbst (8):

- nouveau: Fix return of dangling pointer in nouveau_fence_new

- clc: make libclc optional for configs not needing it

- clc: use our downstream fork of libclc

- rusticl: warn if we load not our own libclc fork

- clc: move open_clc_data below map_clc_data and close_clc_data

- clc: use the libclc file size from stat instead of seeking

- clc: map the libclc early

- clc: stop using the mtime as it is not reliable

Linermao (1):

- virgl: Close winsys fd after destroying screen

Lionel Landwerlin (8):

- anv: fix barrier for Wa_1508744258 / Wa_14024015672

- iris: fix barrier for Wa_1508744258 / Wa_14024015672

- jay: copy resource_intel surface handle value

- anv: fixup the logic dealing with STATE_BYTE_STRIDE

- anv: only consider active view-capable queues for image views

- anv: fix CmdWaitEvents2 dependencyFlags usage

- brw: fix non register aligned MOV_INDIRECT source

- vulkan/runtime: reindex internal bits

Lorenzo Rossi (1):

- pan/bi: Propagate swizzle in bi_optimizer_result_type

Lucas Stach (7):

- etnaviv: clean up index buffer handling code a bit

- etnaviv: move index buffer handling in draw_vbo after derived state handling

- etnaviv: reserve state emission space early in draw_vbo

- etnaviv: move sampler source update before draw space reservation

- etnaviv: drm: don’t skip submit if there is a in_fence

- etnaviv: discard in_fence fd after flush

- etnaviv: resume active queries after pending resources has been reset

Maaz Mombasawala (1):

- svga: Pass buffer handle for fd handles for resource_from_handle()

Mary Guillemard (2):

- nvk: Reenable compression support on Turing with nouveau 1.4.3

- nak: Do not encode a RZ for src2 on FMNMX

Mel Henning (1):

- nak: Serialize carry access in instr_sched_prepass

Nick Hamilton (1):

- glthread: fix check for unroll draws using user VBOs when the ctx supports GLES

Rahul Mahantappa Bhadrashette (1):

- radeonsi: emit MESHLET registers for mesh shaders in gfx10_emit_shader_ngg

Rhys Perry (3):

- nir/load_store_vectorize: rework barriers to use entries

- nir/load_store_vectorize: recreate entry key when adding from predecessor

- vtn: don’t fail at uniformity decorations on variables and OpBufferPointer

Rob Clark (1):

- nir: Add missing lower_io case

Samuel Pitoiset (5):

- radv: fix invalid assertions in DGC when queues aren’t enabled

- wsi/display: fix a memleak when swapchain creation failed

- wsi/display: free the previous display name when EDID is parsed

- radv: fix computing BC formats in texels for HIC

- radv: add a workaround for broken multi viewport with UE5

Valentine Burley (3):

- zink: Use ShaderLayer capability for gl_Layer when available

- freedreno: Increase reg_size_vec4 for A702

- freedreno: Fix VPC_RAST_STREAM_CNTL register layouts

Vlad Zahorodnii (1):

- wsi/wayland: Add support for wl_fixes.ack_global_remove

Yiwei Zhang (1):

- venus: amend VK_EXT_ycbcr_image_array advertisement

Zan Dobersek (1):

- tu: fix R64 image clears via non-generic clear code path