This patch adds F12 offline Freestyle rendering support to Eevee. Most functionalities are identical with those found in Cycles. The only major difference is that the per-view layer "use Freestyle" toggle option is currently placed in the "Passes" panel of the "View Layers" properties window instead of a "Layer" panel as in Cycles. Since Freestyle is a post-processed overlay and not a pass, the present option location is a compromise. To describe this fact, the per-layer "use Freestyle" option is in a subsection labeled as "Layer". Reviewers: fclem, brecht, campbellbarton Reviewed By: fclem, brecht Subscribers: dfelinto Differential Revision: https://developer.blender.org/D3084