xref: /xsrc/external/mit/MesaLib/dist/docs/drivers/svga3d.rst

VMware SVGA3D
=============

This page describes how to build, install and use the
`VMware <https://www.vmware.com/>`__ guest GL driver (aka the SVGA or
SVGA3D driver) for Linux using the latest source code. This driver gives
a Linux virtual machine access to the host's GPU for
hardware-accelerated 3D. VMware Workstation running on Linux or Windows
and VMware Fusion running on MacOS are all supported.

With the August 2015 Workstation 12 / Fusion 8 releases, OpenGL 3.3 is
supported in the guest. This requires:

-  The VM is configured for virtual hardware version 12.
-  The host OS, GPU and graphics driver supports DX11 (Windows) or
   OpenGL 4.0 (Linux, Mac)
-  On Linux, the vmwgfx kernel module must be version 2.9.0 or later.
-  A recent version of Mesa with the updated svga Gallium driver.

Otherwise, OpenGL 2.1 is supported.

With the Fall 2018 Workstation 15 / Fusion 11 releases, additional
features are supported in the driver:

-  Multisample antialiasing (2x, 4x)
-  GL_ARB/AMD_draw_buffers_blend
-  GL_ARB_sample_shading
-  GL_ARB_texture_cube_map_array
-  GL_ARB_texture_gather
-  GL_ARB_texture_query_lod
-  GL_EXT/OES_draw_buffers_indexed

This requires version 2.15.0 or later of the vmwgfx kernel module and
the VM must be configured for hardware version 16 or later.

OpenGL 3.3 support can be disabled by setting the environment variable
SVGA_VGPU10=0. You will then have OpenGL 2.1 support. This may be useful
to work around application bugs (such as incorrect use of the OpenGL 3.x
core profile).

Most modern Linux distros include the SVGA3D driver so end users
shouldn't be concerned with this information. But if your distro lacks
the driver or you want to update to the latest code these instructions
explain what to do.

For more information about the X components see these wiki pages at
x.org:

-  `Driver Overview <https://wiki.x.org/wiki/vmware>`__
-  `xf86-video-vmware
   Details <https://wiki.x.org/wiki/vmware/vmware3D>`__

Components
----------

The components involved in this include:

-  Linux kernel module: vmwgfx
-  X server 2D driver: xf86-video-vmware
-  User-space libdrm library
-  Mesa/Gallium OpenGL driver: "svga"

All of these components reside in the guest Linux virtual machine. On
the host, all you're doing is running VMware
`Workstation <https://www.vmware.com/products/workstation/>`__ or
`Fusion <https://www.vmware.com/products/fusion/>`__.

Prerequisites
-------------

-  Kernel version at least 2.6.25
-  Xserver version at least 1.7
-  Ubuntu: For Ubuntu you need to install a number of build
   dependencies.

   ::

      sudo apt-get install git-core
      sudo apt-get install ninja-build meson libpthread-stubs0-dev
      sudo apt-get install xserver-xorg-dev x11proto-xinerama-dev libx11-xcb-dev
      sudo apt-get install libxcb-glx0-dev libxrender-dev
      sudo apt-get build-dep libgl1-mesa-dri libxcb-glx0-dev
        

-  Fedora: For Fedora you also need to install a number of build
   dependencies.

   ::

      sudo yum install mesa-libGL-devel xorg-x11-server-devel xorg-x11-util-macros
      sudo yum install libXrender-devel.i686
      sudo yum install ninja-build meson gcc expat-devel kernel-devel git-core
      sudo yum install makedepend flex bison
        

Depending on your Linux distro, other packages may be needed. Meson
should tell you what's missing.

Getting the Latest Source Code
------------------------------

Begin by saving your current directory location:

::

   export TOP=$PWD
     

-  Mesa/Gallium main branch. This code is used to build libGL, and the
   direct rendering svga driver for libGL, vmwgfx_dri.so, and the X
   acceleration library libxatracker.so.x.x.x.

   ::

      git clone https://gitlab.freedesktop.org/mesa/mesa.git
        

-  VMware Linux guest kernel module. Note that this repo contains the
   complete DRM and TTM code. The vmware-specific driver is really only
   the files prefixed with vmwgfx.

   ::

      git clone git://anongit.freedesktop.org/git/mesa/vmwgfx
        

-  libdrm, a user-space library that interfaces with DRM. Most distros
   ship with this but it's safest to install a newer version. To get the
   latest code from Git:

   ::

      git clone https://gitlab.freedesktop.org/mesa/drm.git
        

-  xf86-video-vmware. The chainloading driver, vmware_drv.so, the legacy
   driver vmwlegacy_drv.so, and the vmwgfx driver vmwgfx_drv.so.

   ::

      git clone git://anongit.freedesktop.org/git/xorg/driver/xf86-video-vmware
        

Building the Code
-----------------

-  Determine where the GL-related libraries reside on your system and
   set the LIBDIR environment variable accordingly.

   For 32-bit Ubuntu systems:

   ::

      export LIBDIR=/usr/lib/i386-linux-gnu

   For 64-bit Ubuntu systems:

   ::

      export LIBDIR=/usr/lib/x86_64-linux-gnu

   For 32-bit Fedora systems:

   ::

      export LIBDIR=/usr/lib

   For 64-bit Fedora systems:

   ::

      export LIBDIR=/usr/lib64

-  Build libdrm:

   ::

      cd $TOP/drm
      meson builddir --prefix=/usr --libdir=${LIBDIR}
      ninja -C builddir
      sudo ninja -C builddir install
        

-  Build Mesa and the vmwgfx_dri.so driver, the vmwgfx_drv.so xorg
   driver, the X acceleration library libxatracker. The vmwgfx_dri.so is
   used by the OpenGL libraries during direct rendering, and by the Xorg
   server during accelerated indirect GL rendering. The libxatracker
   library is used exclusively by the X server to do render, copy and
   video acceleration:

   The following configure options doesn't build the EGL system.

   ::

      cd $TOP/mesa
      meson builddir --prefix=/usr --libdir=${LIBDIR} -Dgallium-drivers=svga -Ddri-drivers=swrast -Dgallium-xa=true -Ddri3=false
      ninja -C builddir
      sudo ninja -C builddir install
        

   Note that you may have to install other packages that Mesa depends
   upon if they're not installed in your system. You should be told
   what's missing.

-  xf86-video-vmware: Now, once libxatracker is installed, we proceed
   with building and replacing the current Xorg driver. First check if
   your system is 32- or 64-bit.

   ::

      cd $TOP/xf86-video-vmware
      ./autogen.sh --prefix=/usr --libdir=${LIBDIR}
      make
      sudo make install
        

-  vmwgfx kernel module. First make sure that any old version of this
   kernel module is removed from the system by issuing

   ::

      sudo rm /lib/modules/`uname -r`/kernel/drivers/gpu/drm/vmwgfx.ko*

   Build and install:

   ::

      cd $TOP/vmwgfx
      make
      sudo make install
      sudo depmod -a

   If you're using a Ubuntu OS:

   ::

      sudo update-initramfs -u

   If you're using a Fedora OS:

   ::

      sudo dracut --force

   Add 'vmwgfx' to the /etc/modules file:

   ::

      echo vmwgfx | sudo tee -a /etc/modules

   .. note::

      some distros put DRM kernel drivers in different directories.
      For example, sometimes vmwgfx.ko might be found in
      ``/lib/modules/{version}/extra/vmwgfx.ko`` or in
      ``/lib/modules/{version}/kernel/drivers/gpu/drm/vmwgfx/vmwgfx.ko``.

      After installing vmwgfx.ko you might want to run the following
      command to check that the new kernel module is in the expected place:

      ::

         find /lib/modules -name vmwgfx.ko -exec ls -l '{}' \;

      If you see the kernel module listed in more than one place, you may
      need to move things around.

   Finally, if you update your kernel you'll probably have to rebuild
   and reinstall the vmwgfx.ko module again.

Now try to load the kernel module by issuing

::

   sudo modprobe vmwgfx

Then type

::

   dmesg

to watch the debug output. It should contain a number of lines prefixed
with "[vmwgfx]".

Then restart the Xserver (or reboot). The lines starting with
"vmwlegacy" or "VMWARE" in the file /var/log/Xorg.0.log should now have
been replaced with lines starting with "vmwgfx", indicating that the new
Xorg driver is in use.

Running OpenGL Programs
-----------------------

In a shell, run 'glxinfo' and look for the following to verify that the
driver is working:

::

   OpenGL vendor string: VMware, Inc.
   OpenGL renderer string: Gallium 0.4 on SVGA3D; build: RELEASE;
   OpenGL version string: 2.1 Mesa 8.0

If you don't see this, try setting this environment variable:

::

   export LIBGL_DEBUG=verbose

then rerun glxinfo and examine the output for error messages.

If OpenGL 3.3 is not working (you only get OpenGL 2.1):

-  Make sure the VM uses hardware version 12.
-  Make sure the vmwgfx kernel module is version 2.9.0 or later.
-  Check the vmware.log file for errors.
-  Run 'dmesg \| grep vmwgfx' and look for "DX: yes".