Cycles: add view layer setting to exclude volumes, like hair and surfaces

intern/cycles/blender/addon/ui.py

@@ -770,6 +770,8 @@ class CYCLES_RENDER_PT_filter(CyclesButtonsPanel, Panel):
         col.prop(view_layer, "use_solid", text="Surfaces")
         col = flow.column()
         col.prop(view_layer, "use_strand", text="Hair")
+        col = flow.column()
+        col.prop(view_layer, "use_volumes", text="Volumes")
         if with_freestyle:
             col = flow.column()
             col.prop(view_layer, "use_freestyle", text="Freestyle")

intern/cycles/blender/blender_sync.cpp

@@ -405,6 +405,7 @@ void BlenderSync::sync_view_layer(BL::SpaceView3D & /*b_v3d*/, BL::ViewLayer &b_
   view_layer.use_background_ao = b_view_layer.use_ao();
   view_layer.use_surfaces = b_view_layer.use_solid();
   view_layer.use_hair = b_view_layer.use_strand();
+  view_layer.use_volumes = b_view_layer.use_volumes();
 
   /* Material override. */
   view_layer.material_override = b_view_layer.material_override();

intern/cycles/blender/blender_sync.h

@@ -236,6 +236,7 @@ class BlenderSync {
           use_background_ao(true),
           use_surfaces(true),
           use_hair(true),
+          use_volumes(true),
           samples(0),
           bound_samples(false)
     {
@@ -247,6 +248,7 @@ class BlenderSync {
     bool use_background_ao;
     bool use_surfaces;
     bool use_hair;
+    bool use_volumes;
     int samples;
     bool bound_samples;
   } view_layer;

intern/cycles/blender/blender_volume.cpp

@@ -1,4 +1,3 @@
-
 /*
  * Copyright 2011-2013 Blender Foundation
  *
@@ -83,7 +82,9 @@ void BlenderSync::sync_volume(BL::Object &b_ob, Mesh *mesh, const vector<Shader
   mesh->used_shaders = used_shaders;
 
   /* Smoke domain. */
-  sync_smoke_volume(scene, b_ob, mesh, b_scene.frame_current());
+  if (view_layer.use_volumes) {
+    sync_smoke_volume(scene, b_ob, mesh, b_scene.frame_current());
+  }
 
   /* Tag update. */
   bool rebuild = (old_has_voxel_attributes != mesh->has_voxel_attributes());

source/blender/makesdna/DNA_scene_types.h

@@ -242,6 +242,7 @@ typedef struct SceneRenderLayer {
 #define SCE_LAY_STRAND (1 << 5)
 #define SCE_LAY_FRS (1 << 6)
 #define SCE_LAY_AO (1 << 7)
+#define SCE_LAY_VOLUMES (1 << 8)
 /* flags between (1 << 8) and (1 << 15) are set to 1 already, for future options */
 
 #define SCE_LAY_ALL_Z (1 << 15)

source/blender/makesrna/intern/rna_scene.c

@@ -4018,6 +4018,16 @@ void rna_def_view_layer_common(StructRNA *srna, const bool scene)
     RNA_def_property_clear_flag(prop, PROP_EDITABLE);
   }
 
+  prop = RNA_def_property(srna, "use_volumes", PROP_BOOLEAN, PROP_NONE);
+  RNA_def_property_boolean_sdna(prop, NULL, "layflag", SCE_LAY_VOLUMES);
+  RNA_def_property_ui_text(prop, "Volumes", "Render volumes in this Layer");
+  if (scene) {
+    RNA_def_property_update(prop, NC_SCENE | ND_RENDER_OPTIONS, NULL);
+  }
+  else {
+    RNA_def_property_clear_flag(prop, PROP_EDITABLE);
+  }
+
   /* passes */
   prop = RNA_def_property(srna, "use_pass_combined", PROP_BOOLEAN, PROP_NONE);
   RNA_def_property_boolean_sdna(prop, NULL, "passflag", SCE_PASS_COMBINED);