# Mesa 21.0.1 Release Notes / 2021-03-24

Mesa 21.0.1 is a bug fix release which fixes bugs found since the 21.0.0 release.

Mesa 21.0.1 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 21.0.1 implements the Vulkan 1.2 API, but the version reported by the apiVersion property of the VkPhysicalDeviceProperties struct depends on the particular driver being used.

## SHA256 checksum

    379fc984459394f2ab2d84049efdc3a659869dc1328ce72ef0598506611712bb  mesa-21.0.1.tar.xz

## New features

- None

## Bug fixes

- [RADV] Halo: The Master Chief Collection: Crash in Halo Reach Firefight

- subgroupBallotFindMSB() broken in RADV/ACO 20.3.4

- “unknown intrinsic” assertion triggered by multiview shader in non-multiview renderpass in Vulkan on intel

## Changes

Benjamin Tissoires (3):

- CI: windows: augment the timeout of building the windows container

- CI: windows: split the layers to meet new registry requirements

- CI: windows: Force using LLVM 12

Caio Marcelo de Oliveira Filho (1):

- anv: Lower ViewIndex to zero when multiview is disabled

Daniel Stone (1):

- CI: Try really hard to get updated Windows TLS certs

Dylan Baker (12):

- docs: update calendar and link releases notes for 21.0.0

- .pick_status.json: Update to b1ab69f467b7b10e383f3b6bb957c7e6669a3772

- .pick_status.json: Mark bddc0e023c2c87d3248691ea62b77626704cc5a4 as backported

- .pick_status.json: Mark a67d3e7c9e2c1ae9b05153a281cf73926b9f6af7 as backported

- .pick_status.json: Mark db67d9c0d11c886c5b960126b8bf0a230e65d980 as backported

- .pick_status.json: Mark 8955d179d3e47982ccd67b8aecb0f5bed73d60b6 as backported

- .pick_status.json: Update to 2407952ec99ab1c2a16e01a9e300f799e4d53320

- ci: disable panfrost and radeonsi while the runners are struggling

- .pick_status.json: Update to e3f703e4646b57534e49e0975cc3df20bf7b4a54

- .pick_status.json: Update to 277ea7a015cd7df10a9dc65d5def0762cf2e9599

- Revert “ci: disable panfrost and radeonsi while the runners are struggling”

- ci: mark a couple of LLVMPIPE tests as expected pass

Erik Faye-Lund (3):

- gallium/st: fix shader_has_one_variant

- gallium/st: fix shader_has_one_variant

- zink: fix emulation of no mipfilter

Hyunjun Ko (1):

- ir3: fix has_src() to return correctly in ir3_nir_lower_tex_prefetch

Ilia Mirkin (2):

- gallium,st: add missing viewport swizzles

- nv50: initialize target for blit source surfaces

Faith Ekstrand (1):

- intel/fs: Handle payload node interference in destinations

Jesse Natalie (2):

- CI: Use a sha for the Windows SPIRV-LLVM-Translator dependency

- panfrost: Add a Meson dependency on bi_opcodes.h for bifrost_compiler

Jordan Justen (1):

- i965/gen11: Fix must-be-ones bit positions in 3D_MODE

Lionel Landwerlin (2):

- anv: fix MI_PREDICATE_RESULT write

- intel/fs/vec4: add missing dependency in write-on-write fixed GRFs

Mauro Rossi (1):

- android: anv: add libcutils shared dependency

Michel Dänzer (1):

- aco/tests: Use _exit in child process

Mike Blumenkrantz (3):

- lavapipe: fix push descriptor set indexing

- zink: always use requested format for sampler view creation

- compiler/spirv: fix image sample queries

Neha Bhende (2):

- mesa: set states in fast path for restoring light attributes

- gallium/u_vbuf: use updated pipe_draw_start_count while using draw_vbo

Pierre Moreau (1):

- spirv: Ignore WorkgroupSize in non-compute stages

Pierre-Eric Pelloux-Prayer (1):

- frontends/va: fix protected slice data buffer read size

Rhys Perry (2):

- aco: set compr for fp16 exports

- aco: implement 64-bit VGPR {u,i}find_msb

Timothy Arceri (2):

- Revert “glsl: default to compat shaders in compat profile”

- glsl: fix declarations of gl_MaxVaryingFloats

Timur Kristóf (1):

- aco: Fix constant address offset calculation for ds_read2 instructions.

Tony Wasserka (1):

- radv: Fix improper max_index_count argument for indexed draws