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libreoffice/vcl/opengl/README.opengl
Tomaž Vajngerl a73897dc07 README.opengl: Some notes about env. vars. useful for OpenGL
Change-Id: I25e50bdead1ad1e39be3d527685230c84f08a292
2015-07-27 12:44:37 +09:00

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Run LO with OpenGL enabled
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SAL_USE_VCLPLUGIN=gtk SAL_FORCEGL=1 ./soffice
Environment variables used:
SAL_USE_VCLPLUGIN - use the specified VCL plugin (GTK2 in this case - currently
needed on Linux because the default GTK3 doesn't support OpenGL yet)
SAL_FORCEGL - enable OpenGL even if the card is blacklisted.
Other variables:
LIBGL_ALWAYS_SOFTWARE=1 - on Linux+Mesa forces the software renderer to be used
(this is useful as an alternative to spot driver specific bugs)
SAL_LOG=+INFO.vcl.opengl - if "--enable-dbgutil" is used, this can show OpenGL
various rendering messages.
LD_PRELOAD=/usr/lib64/apitrace/wrappers/glxtrace.so - preload the wrapper for
APItrace. The path is the default used in Fedora 21+.
Run VCLDemo
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SAL_USE_VCLPLUGIN=gtk SAL_FORCEGL=1 ./bin/run vcldemo