make it possible to disable the visibility map

export/light.py

@@ -154,6 +154,7 @@ def convert_lamp(blender_obj, scene, context, luxcore_scene):
             raise Exception("Unkown light type", lamp.type, 'in lamp "%s"' % blender_obj.name)
 
         _indirect_light_visibility(definitions, lamp)
+        _visibilitymap(definitions, lamp)
 
         props = utils.create_props(prefix, definitions)
         return props, exported_light
@@ -205,6 +206,7 @@ def convert_world(world, scene):
             definitions["type"] = "constantinfinite"
 
         _indirect_light_visibility(definitions, world)
+        _visibilitymap(definitions, world)
 
         props = utils.create_props(prefix, definitions)
         return props
@@ -377,6 +379,9 @@ def _indirect_light_visibility(definitions, lamp_or_world):
         "visibility.indirect.specular.enable": lamp_or_world.luxcore.visibility_indirect_specular,
     })
 
+def _visibilitymap(definitions, lamp_or_world):
+    definitions["visibilitymap.enable"] = lamp_or_world.luxcore.visibilitymap_enable
+
 
 def export_ies(definitions, iesfile_type, iesfile_text, iesfile_path, flipz, library, is_meshlight=False):
     prefix = "emission." if is_meshlight else ""

properties/light.py

@@ -53,6 +53,11 @@
     "of the light and less to the sides."
 )
 
+VISIBILITYMAP_ENABLE_DESC = (
+    "Compute a visibility map for this light source. Recommended for indoor scenes where this "
+    "light source is only visible through small openings (e.g. windows)"
+)
+
 
 def init():
     bpy.types.Lamp.luxcore = PointerProperty(type=LuxCoreLightProps)
@@ -146,6 +151,10 @@ def update_is_laser(self, context):
     visibility_indirect_glossy = BoolProperty(name="Glossy", default=True)
     visibility_indirect_specular = BoolProperty(name="Specular", default=True)
 
+    # sky2, infinite, constantinfinite
+    visibilitymap_enable = BoolProperty(name="Build Visibility Map", default=True,
+                                        description=VISIBILITYMAP_ENABLE_DESC)
+
     # area
     # We use unit="ROTATION" because angles are radians, so conversion is necessary for the UI
     spread_angle = FloatProperty(name="Spread Angle", default=math.pi / 2, min=0, soft_min=math.radians(5),

properties/world.py

@@ -6,7 +6,8 @@
 )
 from .light import (
     SAMPLES_DESCRIPTION, IMPORTANCE_DESCRIPTION,
-    GAMMA_DESCRIPTION, SAMPLEUPPERHEMISPHEREONLY_DESCRIPTION
+    GAMMA_DESCRIPTION, SAMPLEUPPERHEMISPHEREONLY_DESCRIPTION,
+    VISIBILITYMAP_ENABLE_DESC,
 )
 
 
@@ -49,5 +50,8 @@ class LuxCoreWorldProps(bpy.types.PropertyGroup):
     visibility_indirect_glossy = BoolProperty(name="Glossy", default=True)
     visibility_indirect_specular = BoolProperty(name="Specular", default=True)
 
-    volume = PointerProperty(type=bpy.types.NodeTree)
+    # sky2, infinite, constantinfinite
+    visibilitymap_enable = BoolProperty(name="Build Visibility Map", default=True,
+                                        description=VISIBILITYMAP_ENABLE_DESC)
 
+    volume = PointerProperty(type=bpy.types.NodeTree)

ui/light.py

@@ -152,6 +152,10 @@ def draw(self, context):
         layout.prop(lamp.luxcore, "samples")
         layout.prop(lamp.luxcore, "importance")
 
+        if lamp.type == "HEMI":
+            # infinite (with image) and constantinfinte lights
+            layout.prop(lamp.luxcore, "visibilitymap_enable")
+
 
 class LUXCORE_LAMP_PT_visibility(DataButtonsPanel, Panel):
     COMPAT_ENGINES = {"LUXCORE"}

ui/world.py

@@ -115,6 +115,8 @@ def draw(self, context):
         layout.prop(world.luxcore, "samples")
         layout.prop(world.luxcore, "importance")
 
+        layout.prop(world.luxcore, "visibilitymap_enable")
+
 
 class LUXCORE_WORLD_PT_visibility(WorldButtonsPanel, Panel):
     COMPAT_ENGINES = {"LUXCORE"}