Merge branch '2.1' of https://github.com/Ultimaker/Cura into 2.1

plugins/CuraEngineBackend/ProcessSlicedObjectListJob.py

@@ -106,7 +106,8 @@ class ProcessSlicedObjectListJob(Job):
                     points -= center
 
                     layer_data.addPolygon(layer.id, polygon.type, points, polygon.line_width)
-
+                    Job.yieldThread()
+                Job.yieldThread()
                 current_layer += 1
                 progress = (current_layer / layer_count) * 100
                 # TODO: Rebuild the layer data mesh once the layer has been processed.

plugins/SolidView/SolidView.py

@@ -33,6 +33,7 @@ class SolidView(View):
         if not self._disabled_shader:
             self._disabled_shader = OpenGL.getInstance().createShaderProgram(Resources.getPath(Resources.Shaders, "overhang.shader"))
             self._disabled_shader.setUniformValue("u_diffuseColor", [0.68, 0.68, 0.68, 1.0])
+            self._disabled_shader.setUniformValue("u_overhangAngle", math.cos(math.radians(0)))
 
         if Application.getInstance().getMachineManager().getWorkingProfile():
             profile = Application.getInstance().getMachineManager().getWorkingProfile()

resources/machines/fdmprinter.json

@@ -1296,8 +1296,10 @@
                     "unit": "°",
                     "type": "float",
                     "min_value": "-90",
+                    "min_value_warning": "-45",
+                    "max_value_warning": "45",
                     "max_value": "90",
-                    "default": -30,
+                    "default": 30,
                     "visible": false,
                     "enabled": "support_conical_enabled and support_enable"
                 },