Workspaces: remove workspace engine, use 3D viewport draw mode instead.

ViewRender was removed, which means we can't get the render engine for files
saved in 2.8. We assume that any files saved in 2.8 were intended to use Eevee
and set the engine to that.

A fix included with this is that .blend thumbails now draw with Clay mode,
and never Eevee or Cycles. These were drawn with solid mode in 2.7, and should
be very fast and not e.g. load heavy image textures.

Differential Revision: https://developer.blender.org/D3156

1 files changed, 4 insertions, 8 deletions

diff --git a/release/scripts/startup/bl_ui/properties_scene.py b/release/scripts/startup/bl_ui/properties_scene.py
index d61e99f1e1e..79a7113374b 100644
--- a/release/scripts/startup/bl_ui/properties_scene.py
+++ b/release/scripts/startup/bl_ui/properties_scene.py
@@ -60,8 +60,7 @@ class SceneButtonsPanel:
 
     @classmethod
     def poll(cls, context):
-        view_render = context.scene.view_render
-        return context.scene and (view_render.engine in cls.COMPAT_ENGINES)
+        return (context.engine in cls.COMPAT_ENGINES)
 
 
 class SCENE_PT_scene(SceneButtonsPanel, Panel):
@@ -330,8 +329,7 @@ class SCENE_PT_rigid_body_world(SceneButtonsPanel, Panel):
 
     @classmethod
     def poll(cls, context):
-        scene = context.scene
-        return scene and (scene.view_render.engine in cls.COMPAT_ENGINES)
+        return (context.engine in cls.COMPAT_ENGINES)
 
     def draw_header(self, context):
         scene = context.scene
@@ -377,8 +375,7 @@ class SCENE_PT_rigid_body_cache(SceneButtonsPanel, Panel):
     @classmethod
     def poll(cls, context):
         scene = context.scene
-        view_render = scene.view_render
-        return scene and scene.rigidbody_world and (view_render.engine in cls.COMPAT_ENGINES)
+        return scene and scene.rigidbody_world and (context.engine in cls.COMPAT_ENGINES)
 
     def draw(self, context):
         scene = context.scene
@@ -394,9 +391,8 @@ class SCENE_PT_rigid_body_field_weights(SceneButtonsPanel, Panel):
 
     @classmethod
     def poll(cls, context):
-        view_render = context.scene.view_render
         scene = context.scene
-        return scene and scene.rigidbody_world and (view_render.engine in cls.COMPAT_ENGINES)
+        return scene and scene.rigidbody_world and (context.engine in cls.COMPAT_ENGINES)
 
     def draw(self, context):
         scene = context.scene