Cycles: Display RenderPass in Viewport

This change allows the user to select a renderpass in the 3d viewport.

Added support for external renderers to extend the `View3DShading` struct.
This way Blender doesn't need to know the features an external render engine wants to support.
Note that the View3DShading is also available in the scene->display.shading; although this is
supported, it does not make sense for render engines to put something here as it is really
scene/workbench related.

Currently cycles assumes that it always needs to calculate the combined pass; it ignores the
`pass_flag` in KernelFilm. We could optimize this but that was not in scope of this change

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D5689

1 files changed, 3 insertions, 3 deletions

diff --git a/intern/cycles/render/session.h b/intern/cycles/render/session.h
index 60d8f7a8b14..9fffc13dd41 100644
--- a/intern/cycles/render/session.h
+++ b/intern/cycles/render/session.h
@@ -176,7 +176,7 @@ class Session {
 
   void update_status_time(bool show_pause = false, bool show_done = false);
 
-  void tonemap(int sample);
+  void copy_to_display_buffer(int sample);
   void render();
   void reset_(BufferParams &params, int samples);
 
@@ -202,8 +202,8 @@ class Session {
   volatile bool display_outdated;
 
   volatile bool gpu_draw_ready;
-  volatile bool gpu_need_tonemap;
-  thread_condition_variable gpu_need_tonemap_cond;
+  volatile bool gpu_need_display_buffer_update;
+  thread_condition_variable gpu_need_display_buffer_update_cond;
 
   bool pause;
   thread_condition_variable pause_cond;