<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta name="generator" content= "HTML Tidy for Linux (vers 1 September 2005), see www.w3.org"> <meta http-equiv="Content-Type" content= "text/html; charset=us-ascii"> <title>Chapter 28. Configuring Depth 30 Displays</title> <meta name="generator" content="DocBook XSL Stylesheets V1.68.1"> <link rel="start" href="index.html" title= "NVIDIA Accelerated Linux Graphics Driver README and Installation Guide"> <link rel="up" href="part-01.html" title= "Part I. Installation and Configuration Instructions"> <link rel="prev" href="chapter-27.html" title= "Chapter 27. Configuring SDI Video Output"> <link rel="next" href="chapter-29.html" title= "Chapter 29. NVIDIA Contact Info and Additional Resources"> </head> <body> <div class="navheader"> <table width="100%" summary="Navigation header"> <tr> <th colspan="3" align="center">Chapter 28. Configuring Depth 30 Displays</th> </tr> <tr> <td width="20%" align="left"><a accesskey="p" href= "chapter-27.html">Prev</a> </td> <th width="60%" align="center">Part I. Installation and Configuration Instructions</th> <td width="20%" align="right"> <a accesskey="n" href= "chapter-29.html">Next</a></td> </tr> </table> <hr></div> <div class="chapter" lang="en"> <div class="titlepage"> <div> <div> <h2 class="title"><a name="depth30" id= "depth30"></a>Chapter 28. Configuring Depth 30 Displays</h2> </div> </div> </div> <p>This driver release supports X screens with screen depths of 30 bits per pixel (10 bits per color component) on NVIDIA Quadro GPUs based on G80 and higher chip architectures. This provides about 1 billion possible colors, allowing for higher color precision and smoother gradients.</p> <p>When displaying a depth 30 image on a digital flat panel, the color data will be dithered to 8 or 6 bits per pixel, depending on the capabilities of the flat panel. VGA outputs can display the full 10 bit range of colors.</p> <p>To work reliably, depth 30 requires X.org 7.3 or higher.</p> <p>NOTE: X servers starting with X.org 7.3 rely on a library called libpixman to perform software rendering. As of this writing, the officially released version of this library will crash when it encouters depth 30 drawables. To be able to run X at this depth, you will need to download, compile, and install the "wide-composite" development branch from the freedesktop.org pixman git repository. Please see the freedesktop.org and git documentation for instructions on how to download and compile development branches.</p> <p>In addition to the above software requirements, many X applications and toolkits do not understand depth 30 visuals as of this writing. Some programs may work correctly, some may work but display incorrect colors, and some may simply fail to run. In particular, many OpenGL applications request 8 bits of alpha when searching for FBConfigs. Since depth 30 visuals have only 2 bits of alpha, no suitable FBConfigs will be found and such applications will fail to start.</p> </div> <div class="navfooter"> <hr> <table width="100%" summary="Navigation footer"> <tr> <td width="40%" align="left"><a accesskey="p" href= "chapter-27.html">Prev</a> </td> <td width="20%" align="center"><a accesskey="u" href= "part-01.html">Up</a></td> <td width="40%" align="right"> <a accesskey="n" href= "chapter-29.html">Next</a></td> </tr> <tr> <td width="40%" align="left" valign="top"> Chapter 27. Configuring SDI Video Output </td> <td width="20%" align="center"><a accesskey="h" href= "index.html">Home</a></td> <td width="40%" align="right" valign="top"> Chapter 29. NVIDIA Contact Info and Additional Resources</td> </tr> </table> </div> </body> </html>
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