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-rw-r--r--vcl/README11
1 files changed, 11 insertions, 0 deletions
diff --git a/vcl/README b/vcl/README
index c1fc0bf2119c..76ee2bb21062 100644
--- a/vcl/README
+++ b/vcl/README
@@ -141,3 +141,14 @@ rendering:
another interesting part is actual rendering into canvas bitmap and
using that bitmap later in code using vcl API.
+
+EMF+ implementation has some extensive logging, best if you do a dbgutil
+build, and then
+
+export SAL_LOG=+INFO.cppcanvas.emf+INFO.vcl.emf
+
+before running LibreOffice; it will give you lots of useful hints.
+
+You can also fallback to EMF (from EMF+) rendering via
+
+export EMF_PLUS_DISABLE=1