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Graphics

The Graphics channel is devoted to topics concerning Linux/BSD open-source graphics (GPU) hardware drivers, graphics rendering APIs, display servers, and related graphics/display projects.

Beignet

Beignet is an open-source OpenCL implementation for Intel graphics cores on Linux.

Cairo

Cairo is a vector graphics drawing API that offers multiple hardware and software-accelerated back-ends. Cairo is used by a variety of projects from X.Org to Mozilla and WebKit.

GLVND

The libglvnd project by NVIDIA is an attempt to create an OpenGL venture-neutral dispatch library for Linux systems. Advertised as the new Linux OpenGL ABI, GLVND is designed to make it easier for multiple GPU drivers to co-exist on the same system.

Mesa 3D Graphics Library

This sub-channel is devoted to everything Mesa, including Gallium3D drivers.

Pixman

Pixman is a pixel manipulation and rendering library.

POCL

POCL is the Portable Computing Language and most notably provides an open-source OpenCL library implementation.

Video Acceleration

Projects concerning video acceleration and video playback on graphics adapters are found within this sub-channel.

Wayland

Wayland and its related components are tracked here.

X.Org

The X.Org Server projects and other X.Org projects are tracked via this sub-channel.

Yesterday's Activity

intel/isl: Add MOCS settings to isl_device
Mesa - Rafael Antognolli: Centralize mocs settings into isl.

This Week's Activity

anv: prepare the driver for delayed submissions
Mesa - Lionel Landwerlin: Timeline semaphore introduce support for wait before signal behavior, which means that it is now allowed to call vkQueueSubmit() with wait semaphores not yet submitted for execution.

intel/fs: Implement the new load/store_scratch intrinsics
Mesa - Jason Ekstrand: This commit fills in a number of different pieces: 1.

intel/fs: Lower large local arrays to scratch
Mesa - Jason Ekstrand: Shader-db results on Kaby Lake: total instructions in shared programs: 14929212 -> 14880028 (-0.33%) instructions in affected programs: 72428 -> 23244 (-67.91%) helped: 6 HURT: 2 helped stats (abs) min: 2165 max: 15981 x̄: 8590.00 x̃: 7624 helped stats (rel) min: 56.06% max: 74.52% x̄: 67.55% x̃: 72.08% HURT stats (abs) min: 1178 max: 1178 x̄: 1178.00 x̃: 1178 HURT stats (rel) min: 350.60% max: 361.35% x̄: 355.97% x̃: 355.97% 95% mean confidence interval for instructions value: -11947.03 -348.97 95% mean confidence interval for instructions %-change: -125.72% 202.37% Inconclusive result (%-change mean confidence interval includes 0). total cycles in shared programs: 368585300 -> 342557344 (-7.06%) cycles in affected programs: 28144921 -> 2116965 (-92.48%) helped: 6 HURT: 2 helped stats (abs) min: 1404978 max: 7766106 x̄: 4353922.00 x̃: 3890682 helped stats (rel) min: 82.01% max: 95.57% x̄: 89.95% x̃: 92.28% HURT stats (abs) min: 47778 max: 47798 x̄: 47788.00 x̃: 47788 HURT stats (rel) min: 278.20% max: 282.98% x̄: 280.59% x̃: 280.59% 95% mean confidence interval for cycles value: -5900438.73 -606550.27 95% mean confidence interval for cycles %-change: -140.79% 146.16% Inconclusive result (%-change mean confidence interval includes 0). total spills in shared programs: 9243 -> 8901 (-3.70%) spills in affected programs: 2718 -> 2376 (-12.58%) helped: 4 HURT: 4 total fills in shared programs: 21831 -> 10141 (-53.55%) fills in affected programs: 11804 -> 114 (-99.03%) helped: 6 HURT: 2 total sends in shared programs: 815912 -> 815912 (0.00%) sends in affected programs: 0 -> 0 helped: 0 HURT: 0 LOST: 1 GAINED: 3 The helped shaders are all compute shaders in Aztec Ruins.

backend-drm: Add zpos DRM-property
Weston - Marius Vlad: Functional no change, as nobody makes use of it.

backend-drm: Hard-code zpos values if HW doesn't exposes them
Weston - Marius Vlad: This is based on the assumption that overlays are in between cursor and primary plane and it is required to be able to assign views to planes, even if the driver doesn't not expose such property.

virgl: support emulating planar image sampling
Mesa - David Stevens: Mesa emulates planar format sampling with per-plane samplers.

freedreno/ir3: Implement TCS synchronization intrinsics
Mesa - Kristian H. Kristensen: We add two new IR3 specific nir intrinsics that map to the new condend and endpatch instructions.

freedreno/a6xx: Emit constant parameters for tessellation stages
Mesa - Kristian H. Kristensen: Assemble the information the stages need and emit the constants.

freedreno/ir3: Implement tess coord intrinsic
Mesa - Kristian H. Kristensen: Our lowering pass made the z component unused by replacing its uses by 1 - x - y.

freedreno/ir3: Extend geometry lowering pass to handle tessellation
Mesa - Kristian H. Kristensen: VS and TCS pass varyings the same way as VS and GS does.

This Month's Activity

meson: Add dep_glvnd to egl deps when building with glvnd
Mesa - Dylan Baker: Otherwise if glvnd is not installed systemwide, but only in a prefix, it's headers wont be found.

nir/algebraic: Mark other comparison exact when removing a == a
Mesa - Ian Romanick: This prevents some additional optimizations that would change the original result.

input: bump wl_seat version to 7
Weston - Sebastian Wick: Version 7 only restricts how the client can mmap the keymap fd so bumping this is safe.

clients/window: bump wl_seat version to 7
Weston - Sebastian Wick: Since version 7 clients must use MAP_PRIVATE to map the keymap fd.

input: bump wl_seat version to 6
Weston - Sebastian Wick: New in version 6 are touch shape, touch orientation and axis source wheel tilt.

pan/midgard: Refactor swizzles
Mesa - Alyssa Rosenzweig: Rather than having hw-specific swizzles encoded directly in the instructions, have a unified swizzle arary so we can manipulate swizzles generically.

Recent Releases

Bump VERSION to 20.0.0-devel
Mesa - Dylan Baker

Bump the version to 2.4.100 for autotools
libdrm - Marek Olšák

Bump version for 19.1.0 release
xf86-video-ati - Michel Dänzer

ac: replace HAVE_LLVM with LLVM_VERSION_MAJOR for atomic-optimizations
Mesa - Marek Olšák: trivial

build: bump to version 7.0.0 for the official release
Weston - Simon Ser

scons: define MESA_LLVM_VERSION_STRING like the other build systems do
Mesa - Eric Engestrom

lima/ppir: use ra_get_best_spill_node to select spill node
Mesa - Erico Nunes: ra_get_best_spill_node is what other users of the mesa register allocator use.

build: bump to version 6.0.93 for the RC1 release
Weston - Simon Ser

build: bump to version 6.0.92 for the beta release
Weston - Simon Ser

build: bump to version 6.0.91 for the alpha release
Weston - Simon Ser

Popular Activity In The Past Month

etnaviv: GC7000: Texture descriptors
Mesa - Wladimir J. van der Laan

nir: Add alpha_to_coverage lowering pass
Mesa - Sagar Ghuge

etnaviv: drm: add softpin interface
Mesa - Lucas Stach

nir: add a pass to lower flat shading
Mesa - Dave Airlie

turnip: add code to lower indirect samplers
Mesa - Jonathan Marek

nir: support lowering clipdist to arrays
Mesa - Erik Faye-Lund

turnip: add anisotropy and compressed formats to device features
Mesa - Jonathan Marek

meson: Add support for wrapping llvm
Mesa - Dylan Baker

turnip: add black border color
Mesa - Jonathan Marek

nir: add lowering-pass for point-size mov
Mesa - Erik Faye-Lund

nir: Add new texop nir_texop_tex_prefetch
Mesa - Eduardo Lima Mitev

shared: Use memfd_create() when available
Weston - Emmanuel Gil Peyrot

android: Add panfrost support to build scripts
Mesa - Robert Foss

turnip: add support for pre-fs texture fetch
Mesa - Rob Clark

etnaviv: Make contexts track resources
Mesa - Marek Vasut

aco: implement VGPR spilling
Mesa - Daniel Schürmann

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