1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

Open-Source ARM Mali Graphics Driver Achieves...

Hardware

Published on 12 April 2012 10:48 AM EDT
Written by Michael Larabel in Hardware
4 Comments

The open-source ARM Mali graphics driver, known as the the Lima project, has achieved a major milestone.

Since delivering the exclusive news of the Lima project as an open-source reverse-engineered ARM Mali graphics driver for Linux back in January, there hasn't been too much else to report on about this driver that's still early in its development life. This driver is called Lima since it doesn't have the official blessing of ARM Holdings and right now has been only running simple demos with Limare. The code is available and is running on the KDE Plasma Active Tablet as was talked about and shown at FOSDEM 2012.

Fortunately this morning I've heard some news from the Lima developers about hitting a major milestone. Joining Luc Verhaegen, the lead developer of the Lima project, have been Ben Brewer (another employee of Codethink) and Connor Abbot have been the latest developers joining the Belgian on this open-source driver project.

What these developers have now achieved is being able to decode the instruction set encoding for the fragment (pixel) shader unit of the ARM Mali graphics core. After reverse-engineering this, they've written tools to allow the code to be assembled and disassembled, including being able to pack the instruction data into ARM's shader binary format. With this, the assembled binaries can then be loaded in a clean manner by the official (closed-source) ARM Mali Linux graphics driver. The vertex shader unit is still being deciphered but is nearing a successful point too. It took about one month to decipher Mali's fragment shader.

Ben Brewer mentioned to me that when they have more of the command stream deciphered that they should then be able to implement OpenGL ES 2.0 and OpenCL drivers for this ARM chipset.

These new Lima driver tools can be found on Gitorious while they've also written documentation on the Lima assembler, Lima ISA (instruction set architecture), MBS format, and offline shader compiler.

Luc Verhaegen wrote to Phoronix, "When we started with lima a year ago, it was clear that we needed to split the job up in logical parts: the infrastructure and the shaders. Once the initial infrastructure was out, the work on the shaders could start in earnest. It was amazing to see Connor and Ben piece together everything from just the compiler output at such speed. Now we have the fragment assembler and they are working on the vertex shaders. I love it when a plan comes together. ;)"

Unrelated to this driver, coming up this week still is some really good open-source GPU driver news.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Articles & Reviews
  1. Linux Compiler Benchmarks Of LLVM Clang 3.5 vs. LLVM Clang 3.6-rc1
  2. Intel Broadwell HD Graphics 5500: Windows 8.1 vs. Linux
  3. Linux Benchmarks Of NVIDIA's Early 2015 GeForce Line-Up
  4. NVIDIA GeForce GTX 960: A Great $200 GPU For Linux Gamers
  5. Disk Encryption Tests On Fedora 21
  6. Xonotic 0.8 Performance With The Open-Source AMD/NVIDIA Gallium3D Drivers
Latest Linux News
  1. How To Use GCC 5's OpenMP & OpenACC Offloading Support
  2. Linux Users Upset By Chromium's Busted HiDPI Support
  3. BPF Backend Merged Into LLVM To Make Use Of New Kernel Functionality
  4. Dying Light Is Headed To Linux, SteamOS
  5. Wayland 1.6.1 & Weston 1.6.1 Released
  6. Mesa 10.4.3 Brings A Bunch Of Fixes For The Direct3D "Nine" Support
  7. Intel Has A Few More Graphics Changes For The Linux 3.20 Kernel
  8. Gummiboot Gains PE File Searching Support To Find Linux Kernels
  9. Wine 1.7.35 Starts Working On OpenGL Core Context Support
  10. X.Org Server 1.17 Pre-Release "TimTam" Is Out
Most Viewed News This Week
  1. Windows 10 To Be A Free Upgrade: What Linux Users Need To Know
  2. CoreOS Moves From Btrfs To EXT4 + OverlayFS
  3. Google Admin Encourages Trying Btrfs, Not ZFS On Linux
  4. TraceFS: The Newest Linux File-System
  5. Mozilla's Servo Still On Track For 2015 Alpha Release
  6. My Initial Intel Broadwell Linux Experience With The ThinkPad X1 Carbon
  7. Fedora 23 Likely To Pursue Wayland By Default
  8. Keith Packard Leaves Intel's Linux Graphics Work