# Mesa 18.2.4 Release Notes / October 31, 2018

Mesa 18.2.4 is a bug fix release which fixes bugs found since the 18.2.4 release.

Mesa 18.2.4 implements the OpenGL 4.5 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 4.5. OpenGL 4.5 is only available if requested at context creation. Compatibility contexts may report a lower version depending on each driver.

## SHA256 checksums

    968bfe78605e9397ddf244933b1fa62edb8429fc55aaec2ae7e20bb1c82abdea  mesa-18.2.4.tar.gz
    621d1aebb57876d5b6a5d2dcf4eb7e0620e650c6fe5cf3655c65e243adc9cb4e  mesa-18.2.4.tar.xz

## New features

None

## Bug fixes

- Bug 107865 - swr fail to build with llvm-libs 6.0.1

- Bug 108272 - [polaris10] opencl-mesa: Anything using OpenCL segfaults, XFX Radeon RX 580

- Bug 108524 - [RADV] GPU lockup on event synchronization

## Changes

Alex Smith (2):

- ac/nir: Use context-specific LLVM types

- anv: Fix sanitization of stencil state when the depth test is disabled

Alok Hota (2):

- swr/rast: ignore CreateElementUnorderedAtomicMemCpy

- swr/rast: fix intrinsic/function for LLVM 7 compatibility

Andres Rodriguez (1):

- radv: fix check for perftest options size

Bas Nieuwenhuizen (1):

- radv: Emit enqueued pipeline barriers on event write.

Connor Abbott (2):

- ac: Introduce ac_build_expand()

- ac: Fix loading a dvec3 from an SSBO

David McFarland (1):

- util: Change remaining uint32 cache ids to sha1

Dylan Baker (1):

- meson: don’t require libelf for r600 without LLVM

Elie Tournier (1):

- gallium: Correctly handle no config context creation

Eric Engestrom (1):

- radv: s/abs/fabsf/ for floats

Jan Vesely (1):

- radeonsi: Bump number of allowed global buffers to 32

Faith Ekstrand (3):

- spirv: Use the right bit-size for spec constant ops

- blorp: Emit a dummy 3DSTATE_WM prior to 3DSTATE_WM_HZ_OP

- anv: Flag semaphore BOs as external

Juan A. Suarez Romero (3):

- docs: add sha256 checksums for 18.2.3

- cherry-ignore: Revert “anv/skylake: disable ForceThreadDispatchEnable”

- Update version to 18.2.4

Liviu Prodea (1):

- scons: Put to rest zombie texture_float build option.

Marek Olšák (1):

- radeonsi: fix a VGT hang with primitive restart on Polaris10 and later

Michel Dänzer (1):

- loader/dri3: Also wait for front buffer fence if we triggered it

Nanley Chery (1):

- intel/blorp: Define the clear value bounds for HiZ clears

Rob Clark (2):

- freedreno: fix inorder rendering case

- freedreno: don’t flush when new and old pfb is identical