request a legacy context for OGLTrans

Change-Id: If001121da14ca9d15f6c36af30428f1851710524

canvas/source/opengl/ogl_spritedevicehelper.cxx

@@ -104,6 +104,7 @@ namespace oglcanvas
                 VCLUnoHelper::GetInterface(&rWindow),
                 uno::UNO_QUERY_THROW) );
 
+        maContext.requestLegacyContext();
         maContext.init(&rWindow);
         // init window context
         initContext();