# The Mesa 3D Graphics Library

# Mesa 19.1.6 Release Notes / September 3, 2019

Mesa 19.1.6 is a bug fix release which fixes bugs found since the 19.1.5 release.

Mesa 19.1.6 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

    2a369b7b48545c6486e7e44913ad022daca097c8bd937bf30dcf3f17a94d3496  mesa-19.1.6.tar.xz

## New features

None

## Bug fixes

- Bug 104395 - [CTS] GTF-GL46.gtf32.GL3Tests.packed_pixels.packed_pixels tests fail on 32bit Mesa
- Bug 111213 - VA-API nouveau SIGSEGV and asserts
- Bug 111241 - Shadertoy shader causing hang
- Bug 111411 - SPIR-V shader leads to GPU hang, sometimes making machine unstable

## Changes

Andres Rodriguez (1):

- radv: additional query fixes

Daniel Schürmann (1):

- nir/lcssa: handle deref instructions properly

Danylo Piliaiev (1):

- nir/loop_unroll: Prepare loop for unrolling in wrapper_unroll

Ian Romanick (2):

- nir/algrbraic: Don't optimize open-coded bitfield reverse when lowering is enabled
- intel/compiler: Request bitfield_reverse lowering on pre-Gen7 hardware

Ilia Mirkin (1):

- gallium/vl: use compute preference for all multimedia, not just blit

Jonas Ådahl (1):

- wayland/egl: Ensure correct buffer size when allocating

Juan A. Suarez Romero (6):

- docs: add sha256 checksums for 19.1.5
- cherry-ignore: add explicit 19.2 only nominations
- cherry-ignore: iris: Replace devinfo->gen with GEN_GEN
- cherry-ignore: iris: Update fast clear colors on Gen9 with direct immediate writes.
- cherry-ignore: iris: Avoid unnecessary resolves on transfer maps
- Update version to 19.1.6

Kenneth Graunke (6):

- iris: Fix broken aux.possible/sampler_usages bitmask handling
- iris: Drop copy format hacks from copy region based transfer path.
- iris: Fix large timeout handling in rel2abs()
- util: Add a _mesa_i64roundevenf() helper.
- mesa: Fix _mesa_float_to_unorm() on 32-bit systems.
- intel/compiler: Fix src0/desc setter ordering

Marek Olšák (1):

- radeonsi: fix scratch buffer WAVESIZE setting leading to corruption

Paulo Zanoni (1):

- intel/fs: grab fail_msg from v32 instead of v16 when v32->run_cs fails

Pierre-Eric Pelloux-Prayer (1):

- glsl: replace 'x + (-x)' with constant 0

Tapani Pälli (1):

- egl: reset blob cache set/get functions on terminate