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<HTML>
<TITLE>Environment Variables</TITLE>
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<H1>Environment Variables</H1>
<p>
Mesa supports the following environment variables:
</p>
<ul>
<li>MESA_DEBUG - if defined, error messages are printed to stderr
<li>MESA_NO_DITHER - disable dithering, overriding glEnable(GL_DITHER)
<li>MESA_RGB_VISUAL - specifies the X visual and depth for RGB mode (X only)
<li>MESA_CI_VISUAL - specifies the X visual and depth for CI mode (X only)
<li>MESA_BACK_BUFFER - specifies how to implement the back color buffer (X only)
<li>MESA_PRIVATE_CMAP - force aux/tk libraries to use private colormaps (X only)
<li>MESA_GAMMA - gamma correction coefficients (X only)
<li>MESA_XSYNC - enable synchronous X behavior (for X debugging only)
</ul>
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</HTML>
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