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

OpenGL ES Support For QEMU Emulator

Virtualization

Published on 11 May 2011 06:43 AM EDT
Written by Michael Larabel in Virtualization
5 Comments

One of the items brought up this week at UDS Budapest was about providing OpenGL / OpenGL ES support for QEMU guests. The need for OpenGL ES 2.0 support in QEMU guests has come up since it's used in emulating Maemo / MeeGo for development environments. This would also make it possible to use Canonical's Unity desktop in a virtualized environment.

Code was already written to accelerate OpenGL in QEMU when using x86 software on the guest and host, followed by support for an ARM guest on an x86 system, and then a library was also written for translating OpenGL ES calls to OpenGL.

This Ubuntu-developed OpenGL QEMU acceleration method works by having a fake OpenGL ES library on the guest that implements the EGL, OpenGL ES 1.1, and OpenGL ES 2.0 APIs. This fake library passes the calls onto a kernel module via iomem. There's then some hacked-up QEMU code that reads these OpenGL ES calls from registers and copies the buffers from the guest user-space memory to host user-space. This component though is targeted for being rewritten so that it's much cleaner. This would also be needed for potential upstream QEMU acceptance.

There's also another library in-development that does the EGL / GLES 1.1 / GLES 2.0 translations to GLX, Windows GL, and Apple GL. This part is not dependent upon QEMU but just having a host with OpenGL 2.1+ support. It's working with the proprietary NVIDIA/AMD drivers and the Intel classic Mesa driver, but not much else in terms of the other Mesa / Gallium3D drivers.

This is the rough solution for what Canonical's after, but they haven't explored what Red Hat may be doing for OpenGL acceleration with KVM and SPICE. It would also be interesting to leverage a virtual Gallium3D driver such as what VMware does with their virtualization stack, but that's not a target for these Ubuntu / Linaro developers.

More details in the UDS notes.

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 Linux Hardware Reviews
  1. NVIDIA GeForce GTX 970 Offers Great Linux Performance
  2. CompuLab Intense-PC2: An Excellent, Fanless, Mini PC Powered By Intel's i7 Haswell
  3. From The Atom 330 To Haswell ULT: Intel Linux Performance Benchmarks
  4. AMD Radeon R9 285 Tonga Performance On Linux
Latest Linux Articles
  1. AMD Moves Forward With Unified Linux Driver Strategy, New Kernel Driver
  2. MSI: Update Your BIOS From The Linux Desktop
  3. NVIDIA vs. AMD 2D Linux Drivers: Catalyst Is Getting Quite Good At 2D
  4. 15-Way GPU Comparison With Mesa 10.3 + Linux 3.17
Latest Linux News
  1. Features Of The Linux 3.18 Kernel
  2. Automatic Feedback Directed Optimizer Merged Into GCC
  3. Debian Now Defaults To Xfce On Non-x86 Desktops
  4. Phoenix Is Trying To Be An Open Version Of Apple's Swift
  5. Linux 3.19 To Have Skylake Graphics, PPGTT Enablement
  6. Ubuntu 16.04 Might Be The Distribution's Last 32-Bit Release
  7. Imagination Releases Full ISA Documentation For PowerVR Rogue GPUs
  8. Features GNOME Developers Want In The Linux Kernel
  9. GTK+ Gains Experimental Overlay Scrollbars
  10. Phoronix Test Suite 5.4 M3 Is Another Hearty Update
Latest Forum Discussions
  1. Users/Developers Threatening Fork Of Debian GNU/Linux
  2. Proof that strlcpy is un-needed
  3. xbox one tv tuner
  4. HOPE: The Ease Of Python With The Speed Of C++
  5. Bye bye BSD, Hello Linux: A Sys Admin's Story
  6. Updated and Optimized Ubuntu Free Graphics Drivers
  7. NVIDIA Presents Its Driver Plans To Support Mir/Wayland & KMS On Linux
  8. AMD Is Restructuring Again, Losing 7% Of Employees