2003-12-06 17:26:50 +00:00
|
|
|
<HTML>
|
|
|
|
|
|
|
|
<TITLE>Mesa glFBDev Driver</TITLE>
|
|
|
|
|
2005-01-20 03:55:10 +00:00
|
|
|
<link rel="stylesheet" type="text/css" href="mesa.css"></head>
|
|
|
|
|
|
|
|
<BODY>
|
2003-12-06 17:26:50 +00:00
|
|
|
|
|
|
|
<center><H1>Mesa glFBDev Driver</H1></center>
|
|
|
|
|
|
|
|
|
|
|
|
<H1>1. Introduction</H1>
|
|
|
|
|
|
|
|
<p>
|
|
|
|
The GLFBDev driver interface allows one to do OpenGL rendering into a
|
|
|
|
framebuffer managed with the Linux's fbdev interface.
|
|
|
|
</p>
|
|
|
|
|
|
|
|
<p>
|
|
|
|
Basically, the programmer uses the fbdev functions to initialize the
|
|
|
|
graphics hardware and setup the framebuffer.
|
|
|
|
Then, using a calls to Mesa's glFBDev API functions, one can render
|
|
|
|
into the framebuffer with the OpenGL API functions.
|
|
|
|
</p>
|
|
|
|
|
|
|
|
<p>
|
|
|
|
Note, only software rendering is supported; there is no hardware
|
|
|
|
acceleration.
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
|
|
<p>
|
|
|
|
The GL/glfbdev.h header file defines the glFBDev interface.
|
|
|
|
</p>
|
|
|
|
|
|
|
|
<p>
|
|
|
|
The progs/fbdev/glfbdevtest.c demonstrates how to use the glFBDev interface.
|
|
|
|
</p>
|
|
|
|
|
|
|
|
<p>
|
|
|
|
For more information about fbdev, see the
|
|
|
|
<a href="http://www.tldp.org/HOWTO/Framebuffer-HOWTO.html" target="_parent">
|
|
|
|
Framebuffer Howto</a>
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
|
|
<h1>2. Compilation</h1>
|
|
|
|
|
|
|
|
<p>
|
|
|
|
To compile Mesa with support for the glFBDev interface:
|
|
|
|
<pre>
|
|
|
|
XXX todo
|
|
|
|
</pre>
|
|
|
|
|
|
|
|
<p>
|
|
|
|
When compilation is finished look in progs/glfbdev/ for the glfbdevtest demo.
|
|
|
|
</p>
|
|
|
|
|
|
|
|
</p>
|
|
|
|
xxx todo
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
|
|
<h1>3. Compiling and linking glFBDev programs</h1>
|
|
|
|
|
|
|
|
<p>
|
|
|
|
xxx todo
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<h1>4. Running glFBDev programs</h1>
|
|
|
|
|
|
|
|
<p>
|
|
|
|
First, you need to have a working fbdev environment.
|
|
|
|
See the
|
|
|
|
<a href="http://www.tldp.org/HOWTO/Framebuffer-HOWTO.html" target="_parent">
|
|
|
|
Framebuffer Howto</a> for information.
|
|
|
|
</p>
|
|
|
|
|
|
|
|
<p>
|
|
|
|
Programs must be run with root permission.
|
|
|
|
</p>
|
|
|
|
|
|
|
|
</p>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
</body>
|
|
|
|
</html>
|