Mark Olesen 0ea2c7904a add mesa +swrender variants (gallium software/off-screen rendering) (#4602) ... - +swrender variant lets you compile an off-screen only version for software rendering on clusters. - +swrender+llvm for using llvm for the software pipe - added newer versions (17.1 and 13.0) and corrected the url location to use the canonical location.		2017-07-20 14:12:05 -05:00
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spack	add mesa +swrender variants (gallium software/off-screen rendering) (#4602)	2017-07-20 14:12:05 -05:00