146 lines
5.4 KiB
Plaintext
146 lines
5.4 KiB
Plaintext
--------------------------------
|
|
VMware SVGA Device Developer Kit
|
|
--------------------------------
|
|
|
|
The "VMware SVGA II" device is the virtual graphics card implemented
|
|
by all VMware virtualization products. It is a virtual PCI device,
|
|
which implements a basic 2D framebuffer, as well as 3D acceleration,
|
|
video overlay acceleration, and hardware cursor support.
|
|
|
|
This is a package of documentation and example code for the VMware
|
|
SVGA device's programming model. Currently it consists of some very
|
|
basic documentation, and a collection of examples which illustrate the
|
|
more advanced features of the device. These examples are written to
|
|
run on the "virtual bare metal", without an operating system.
|
|
|
|
This package is intended for educational purposes, or for people who
|
|
are developing 3D drivers. This code won't help you if you're writing
|
|
normal user-level apps that you'd like to run inside a virtual
|
|
machine. It's for driver authors, and it assumes a reasonable amount
|
|
of prior knowledge about graphics hardware.
|
|
|
|
Requirements
|
|
------------
|
|
|
|
To compile the example code, you'll need a few basic open source tools:
|
|
|
|
- A recent version of GCC. I use 4.2. Older versions may
|
|
require tweaking the Makefile.rules file slightly.)
|
|
- binutils
|
|
- GNU Make
|
|
- Python
|
|
|
|
To run the examples, you'll need a recent version of VMware
|
|
Workstation, Player, or Fusion. Some of the examples will work on
|
|
older versions, but Workstation 6.5.x or Fusion 2.0.x is strongly
|
|
recommended.
|
|
|
|
Contents
|
|
--------
|
|
|
|
* bin/
|
|
|
|
Precompiled binaries and .vmx files for all examples. These can be
|
|
loaded directly into VMware Workstation, Player, or Fusion.
|
|
|
|
* doc/
|
|
|
|
Basic SVGA hardware documentation. This includes a text file with
|
|
information about the programming model, plus it includes a copy of
|
|
a WIOV paper which describes our 3D acceleration architecture.
|
|
|
|
* lib/metalkit/
|
|
|
|
Metalkit is a very simple open source OS, which bootstraps the
|
|
examples and provides basic hardware support.
|
|
|
|
* lib/refdriver/
|
|
|
|
The SVGA "Reference Driver". This is a sample implementation of a
|
|
driver for our device, which is used by the examples. It provides
|
|
device initialiation, an implementation of the low-level FIFO
|
|
protocol, and wrappers around common FIFO commands.
|
|
|
|
If you're writing a driver for the VMware SVGA device, "svga.c"
|
|
from this directory is required reading. The FIFO protocol has
|
|
many subtle gotchas, and this source file is the only place
|
|
where they're publicly documented.
|
|
|
|
* lib/vmware/
|
|
|
|
Header files which define VMware's protocols and virtual hardware.
|
|
The svga_reg.h and svga3d_reg.h files are (in places, at least)
|
|
commented with more information on the programming model.
|
|
|
|
If you can't find specific documentation or an example on a feature,
|
|
this is the next place to look. This is also where to get a complete
|
|
list of the supported registers and commands.
|
|
|
|
* lib/util/
|
|
|
|
Higher-level utilities built on top of the refdriver layer. This
|
|
directory won't contain any novel information about the virtual
|
|
hardware, but it does contain some higher-level abstractions used
|
|
by the examples, and these abstractions demonstrate some useful
|
|
idioms for programming the SVGA device.
|
|
|
|
* examples/
|
|
|
|
Each example has a separate subdirectory. You can run "make" in the
|
|
top-level directory to compile all examples, or you can build them
|
|
individually.
|
|
|
|
Many of the examples are self-explanatory, but some of them are
|
|
not. See the comments at the beginning of the 'main.c' file in each
|
|
example.
|
|
|
|
Development
|
|
-----------
|
|
|
|
This project isn't intended to be a one-time "code drop" from VMware.
|
|
Our intent is for the examples in this package to be maintained out in
|
|
the open. If we have a bugfix, or a new example that works on released
|
|
VMware products, we'll check it in directly to the public repository.
|
|
|
|
For examples of not-yet-released features, we will be developing on an
|
|
internal branch. This branch will be merged to the public repository
|
|
shortly after the first release which has working versions of these
|
|
features.
|
|
|
|
License
|
|
-------
|
|
|
|
Except where noted in individual source files, the whole package is
|
|
Copyright (C) 1998-2009 VMware, Inc. It is released under the MIT
|
|
license:
|
|
|
|
Permission is hereby granted, free of charge, to any person
|
|
obtaining a copy of this software and associated documentation files
|
|
(the "Software"), to deal in the Software without restriction,
|
|
including without limitation the rights to use, copy, modify, merge,
|
|
publish, distribute, sublicense, and/or sell copies of the Software,
|
|
and to permit persons to whom the Software is furnished to do so,
|
|
subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be
|
|
included in all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
SOFTWARE.
|
|
|
|
Contact
|
|
-------
|
|
|
|
This project is provided as-is, with no official support from
|
|
VMware. However, I will try to answer questions as time permits.
|
|
If you have questions or you'd like to submit a patch, feel free
|
|
to email me at: micah at vmware.com
|
|
|
|
--
|