Added 'clear' comp-op support to VT renderer
@@ -38,6 +38,7 @@ namespace carto { namespace mvt {
{ "dst-over", vt::CompOp::DST_OVER },
{ "dst-in", vt::CompOp::DST_IN },
{ "dst-atop", vt::CompOp::DST_ATOP },
+ { "clear", vt::CompOp::ZERO },
{ "zero", vt::CompOp::ZERO },
{ "plus", vt::CompOp::PLUS },
{ "minus", vt::CompOp::MINUS },
