Am 14.07.2012 14:05, schrieb Jonathan:

> So, how do I tell Povray 3.7 RC 6 that the SYS file type on this platform [1] is
> Targa?

Only way is to modify the source code.

Locate the file "syspovconfig.h" in the "vfe/unix" directory; add the 
following lines right before the final "#endif // __SYSPOVCONFIG_H__" line:

---------------------------------
#define POV_IS1                             ".tga"
#define POV_IS2                             ".TGA"
#define POV_SYS_FILE_EXTENSION              ".tga"
#define SYS_TO_STANDARD                     TGA
#define SYS_HAS_ALPHA
---------------------------------

Locate the file "syspovconfigfrontend.h" in the same directory, and 
remove the following line:

---------------------------------
#define SYS_HAS_GRAYSCALE		// ...
---------------------------------

Rebuild POV-Ray, and it should work as desired.


You may also want to inform the authors of CYCAS that what they're doing 
there is poor practice, and that they should output "tga" instead of 
"sys". (The "sys" file type is actually a legacy from the days when 
preferred image formats differed widely between platforms, and were 
typically non-portable.)

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