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<BLOCKQUOTE>
<H1><A NAME="TOPIC"><A NAME="1">TOPIC
</A></A></H1>
<P>
<B>win64</B> - using Cg with 64-bit Windows
</P>
<H1><A NAME="ABSTRACT"><A NAME="2">ABSTRACT
</A></A></H1>
<P>
The Cg Toolkit for Windows installs versions of the Cg compiler and
runtime libraries for both 32-bit (x86) and 64-bit (x64) compilation.
This topic documents how to use Cg for 64-bit Windows.
</P>
<H1><A NAME="64-BIT_INSTALLATION"><A NAME="3">64-BIT INSTALLATION
</A></A></H1>
<P>
The Cg Toolkit installer (CgSetup.exe) installs the 32-bit version of
the Cg compiler and the Cg runtime libraries by default. To install
the 64-bit support, you must check the component labeled "Files to run
and link 64-bit (x64) Cg-based applications" during your installation.
</P>
<P>
If you've forgotten to install the 64-bit component, you can re-run the
Cg Toolkit installer and check the 64-bit component.
</P>
<H1><A NAME="EXAMPLES"><A NAME="4">EXAMPLES
</A></A></H1>
<P>
The Cg Toolkit includes Visual Studio .NET 2003 projects intended to
compile 64-bit versions of the Cg Toolkit examples.
</P>
<P>
These project files match the pattern *_x64.vcproj
</P>
<P>
The solution files that collect these projects matches the pattern
*_x64.sln
</P>
<P>
To use these project files with Visual Studio .NET 2003, you <I>must</I>
also install the latest Windows Platform SDK to obtain 64-bit compiler
tools and libraries.
</P>
<P>
Once the Platform SDK is installed, from the Start menu navigate to start
a Windows shell for the 64-bit Windows Build Environment. This shell is
started with the correct environment variables (Path, Include, and Lib)
for the 64-bit compiler tools and libraries.
</P>
<P>
Now run devenv.exe with the /useenv command line option that forces
Visual Studio to pick up Path, Include, and Lib settings from the
shell's environment. When the Visual Studio IDE appears, select
File->Open->Project... and locate one of the *_x64.sln files for
the Cg examples. These are usually under:
</P>
<PRE> c:\Program Files\NVIDIA Corporation\Cg\examples
</PRE><P>
When you open a *_x64.vcproj solution, it references a number of
*_x64.vcproj projects. These have a "Debug x64" and "Release x64"
configuration to build.
</P>
<H1><A NAME="HINTS"><A NAME="5">HINTS
</A></A></H1>
<P>
Remember to link with BufferOverflowU.lib because of the /GS option to
help detect string overflow runtime errors because Microsoft has enabled
this option by default in its 64-bit compilers. See:
</P>
<PRE> <A HREF="http://support.microsoft.com/">support.microsoft.com/</A>?id=894573
</PRE>
<H1><A NAME="IA64_SUPPORT"><A NAME="6">IA64 SUPPORT
</A></A></H1>
<P>
The Cg Toolkit does not provide 64-bit support for Intel's Itanium
architecture.
</P>
<H1><A NAME="SEE_ALSO"><A NAME="7">SEE ALSO
</A></A></H1>
<P>
TBD
</P>
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