Merge remote-tracking branch 'origin/blender-v2.90-release'

20 files changed, 167 insertions, 3 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index cd518227e27..584bee4cffd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -430,6 +430,10 @@ if(WIN32)
   option(WITH_TBB_MALLOC_PROXY "Enable the TBB malloc replacement" ON)
 endif()
 
+# This should be turned off when Blender enter beta/rc/release
+option(WITH_EXPERIMENTAL_FEATURES "Enable experimental features (still need to enable them in the user preferences)" OFF)
+mark_as_advanced(WITH_EXPERIMENTAL_FEATURES)
+
 # Unit testsing
 option(WITH_GTESTS "Enable GTest unit testing" OFF)
 option(WITH_OPENGL_RENDER_TESTS "Enable OpenGL render related unit testing (Experimental)" OFF)
diff --git a/intern/cycles/blender/CMakeLists.txt b/intern/cycles/blender/CMakeLists.txt
index 2316800e21e..e0fa45dffbc 100644
--- a/intern/cycles/blender/CMakeLists.txt
+++ b/intern/cycles/blender/CMakeLists.txt
@@ -109,6 +109,10 @@ if(WITH_OPENIMAGEDENOISE)
   )
 endif()
 
+if(WITH_EXPERIMENTAL_FEATURES)
+  add_definitions(-DWITH_HAIR_NODES)
+endif()
+
 blender_add_lib(bf_intern_cycles "${SRC}" "${INC}" "${INC_SYS}" "${LIB}")
 
 # avoid link failure with clang 3.4 debug
diff --git a/intern/cycles/blender/blender_curves.cpp b/intern/cycles/blender/blender_curves.cpp
index 82c99631a89..6288c370567 100644
--- a/intern/cycles/blender/blender_curves.cpp
+++ b/intern/cycles/blender/blender_curves.cpp
@@ -628,6 +628,7 @@ void BlenderSync::sync_particle_hair(
   }
 }
 
+#ifdef WITH_HAIR_NODES
 static float4 hair_point_as_float4(BL::HairPoint b_point)
 {
   float4 mP = float3_to_float4(get_float3(b_point.co()));
@@ -806,6 +807,15 @@ void BlenderSync::sync_hair(Hair *hair, BL::Object &b_ob, bool motion, int motio
     export_hair_curves(scene, hair, b_hair);
   }
 }
+#else
+void BlenderSync::sync_hair(Hair *hair, BL::Object &b_ob, bool motion, int motion_step)
+{
+  (void)hair;
+  (void)b_ob;
+  (void)motion;
+  (void)motion_step;
+}
+#endif
 
 void BlenderSync::sync_hair(BL::Depsgraph b_depsgraph,
                             BL::Object b_ob,
diff --git a/release/scripts/startup/bl_ui/space_userpref.py b/release/scripts/startup/bl_ui/space_userpref.py
index 03f85578b6e..9548de20752 100644
--- a/release/scripts/startup/bl_ui/space_userpref.py
+++ b/release/scripts/startup/bl_ui/space_userpref.py
@@ -2118,6 +2118,10 @@ class ExperimentalPanel:
 
     url_prefix = "https://developer.blender.org/"
 
+    @classmethod
+    def poll(cls, context):
+        return bpy.app.version_cycle == 'alpha'
+
     def _draw_items(self, context, items):
         prefs = context.preferences
         experimental = prefs.experimental
@@ -2178,6 +2182,12 @@ class USERPREF_PT_experimental_prototypes(ExperimentalPanel, Panel):
 class USERPREF_PT_experimental_debugging(ExperimentalPanel, Panel):
     bl_label = "Debugging"
 
+    @classmethod
+    def poll(cls, context):
+        # Unlike the other experimental panels, the debugging one is always visible
+        # even in beta or release.
+        return True
+
     def draw(self, context):
         self._draw_items(
             context, (
diff --git a/source/blender/blenkernel/BKE_blender_version.h b/source/blender/blenkernel/BKE_blender_version.h
index 6ea113d8828..231cd0e53c5 100644
--- a/source/blender/blenkernel/BKE_blender_version.h
+++ b/source/blender/blenkernel/BKE_blender_version.h
@@ -50,6 +50,9 @@ extern "C" {
 /** User readable version string. */
 const char *BKE_blender_version_string(void);
 
+/* Returns true when version cycle is alpha, otherwise (beta, rc) returns false. */
+bool BKE_blender_version_is_alpha(void);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/blender/blenkernel/intern/blender.c b/source/blender/blenkernel/intern/blender.c
index e8aa13a8beb..af502d30145 100644
--- a/source/blender/blenkernel/intern/blender.c
+++ b/source/blender/blenkernel/intern/blender.c
@@ -135,6 +135,12 @@ const char *BKE_blender_version_string(void)
   return blender_version_string;
 }
 
+bool BKE_blender_version_is_alpha(void)
+{
+  static bool is_alpha = STREQ(STRINGIFY(BLENDER_VERSION_CYCLE), "alpha");
+  return is_alpha;
+}
+
 void BKE_blender_globals_init(void)
 {
   blender_version_init();
diff --git a/source/blender/blenloader/BLO_readfile.h b/source/blender/blenloader/BLO_readfile.h
index 97c77ed2e19..580c833d8dc 100644
--- a/source/blender/blenloader/BLO_readfile.h
+++ b/source/blender/blenloader/BLO_readfile.h
@@ -186,6 +186,9 @@ void BLO_update_defaults_workspace(struct WorkSpace *workspace, const char *app_
 /* Version patch user preferences. */
 void BLO_version_defaults_userpref_blend(struct Main *mainvar, struct UserDef *userdef);
 
+/* Disable unwanted experimental feature settings on startup. */
+void BLO_sanitize_experimental_features_userpref_blend(struct UserDef *userdef);
+
 struct BlendThumbnail *BLO_thumbnail_from_file(const char *filepath);
 
 /* datafiles (generated theme) */
diff --git a/source/blender/blenloader/intern/versioning_userdef.c b/source/blender/blenloader/intern/versioning_userdef.c
index e2dc27d7e88..0b116804481 100644
--- a/source/blender/blenloader/intern/versioning_userdef.c
+++ b/source/blender/blenloader/intern/versioning_userdef.c
@@ -38,6 +38,7 @@
 #include "DNA_windowmanager_types.h"
 
 #include "BKE_addon.h"
+#include "BKE_blender_version.h"
 #include "BKE_colorband.h"
 #include "BKE_idprop.h"
 #include "BKE_keyconfig.h"
@@ -784,4 +785,23 @@ void BLO_version_defaults_userpref_blend(Main *bmain, UserDef *userdef)
 #undef USER_VERSION_ATLEAST
 }
 
+void BLO_sanitize_experimental_features_userpref_blend(UserDef *userdef)
+{
+  /* User preference experimental settings are only supported in alpha builds.
+   * This prevents users corrupting data and relying on API that may change.
+   *
+   * If user preferences are saved this will be stored in disk as expected.
+   * This only starts to take effect when there is a release branch (on beta).
+   *
+   * At that time master already has its version bumped so its user preferences
+   * are not touched by these settings. */
+
+  if (BKE_blender_version_is_alpha()) {
+    return;
+  }
+  userdef->experimental.use_new_particle_system = false;
+  userdef->experimental.use_new_hair_type = false;
+  userdef->experimental.use_sculpt_vertex_colors = false;
+}
+
 #undef USER_LMOUSESELECT
diff --git a/source/blender/editors/interface/interface.c b/source/blender/editors/interface/interface.c
index 41e7db3a38c..478ef216421 100644
--- a/source/blender/editors/interface/interface.c
+++ b/source/blender/editors/interface/interface.c
@@ -44,6 +44,8 @@
 
 #include "BLI_utildefines.h"
 
+#include "BLO_readfile.h"
+
 #include "BKE_animsys.h"
 #include "BKE_context.h"
 #include "BKE_idprop.h"
@@ -6973,6 +6975,8 @@ void UI_init_userdef(Main *bmain)
   /* fix saved themes */
   init_userdef_do_versions(bmain);
   uiStyleInit();
+
+  BLO_sanitize_experimental_features_userpref_blend(&U);
 }
 
 void UI_reinit_font(void)
diff --git a/source/blender/editors/space_buttons/CMakeLists.txt b/source/blender/editors/space_buttons/CMakeLists.txt
index 25ff6bbd098..75d91174470 100644
--- a/source/blender/editors/space_buttons/CMakeLists.txt
+++ b/source/blender/editors/space_buttons/CMakeLists.txt
@@ -54,4 +54,9 @@ if(WITH_FREESTYLE)
   add_definitions(-DWITH_FREESTYLE)
 endif()
 
+if(WITH_EXPERIMENTAL_FEATURES)
+  add_definitions(-DWITH_PARTICLE_NODES)
+  add_definitions(-DWITH_HAIR_NODES)
+endif()
+
 blender_add_lib(bf_editor_space_buttons "${SRC}" "${INC}" "${INC_SYS}" "${LIB}")
diff --git a/source/blender/editors/space_buttons/buttons_context.c b/source/blender/editors/space_buttons/buttons_context.c
index 5885d3dcbb0..3976e18d70c 100644
--- a/source/blender/editors/space_buttons/buttons_context.c
+++ b/source/blender/editors/space_buttons/buttons_context.c
@@ -249,12 +249,16 @@ static bool buttons_context_path_data(ButsContextPath *path, int type)
   if (RNA_struct_is_a(ptr->type, &RNA_GreasePencil) && (type == -1 || type == OB_GPENCIL)) {
     return true;
   }
+#ifdef WITH_HAIR_NODES
   if (RNA_struct_is_a(ptr->type, &RNA_Hair) && (type == -1 || type == OB_HAIR)) {
     return true;
   }
+#endif
+#ifdef WITH_PARTICLE_NODES
   if (RNA_struct_is_a(ptr->type, &RNA_PointCloud) && (type == -1 || type == OB_POINTCLOUD)) {
     return true;
   }
+#endif
   if (RNA_struct_is_a(ptr->type, &RNA_Volume) && (type == -1 || type == OB_VOLUME)) {
     return true;
   }
@@ -871,14 +875,18 @@ int buttons_context(const bContext *C, const char *member, bContextDataResult *r
     set_pointer_type(path, result, &RNA_LightProbe);
     return 1;
   }
+#ifdef WITH_HAIR_NODES
   if (CTX_data_equals(member, "hair")) {
     set_pointer_type(path, result, &RNA_Hair);
     return 1;
   }
+#endif
+#ifdef WITH_PARTICLE_NODES
   if (CTX_data_equals(member, "pointcloud")) {
     set_pointer_type(path, result, &RNA_PointCloud);
     return 1;
   }
+#endif
   if (CTX_data_equals(member, "volume")) {
     set_pointer_type(path, result, &RNA_Volume);
     return 1;
diff --git a/source/blender/makesrna/intern/CMakeLists.txt b/source/blender/makesrna/intern/CMakeLists.txt
index 0b43a5a6653..1896813bdb3 100644
--- a/source/blender/makesrna/intern/CMakeLists.txt
+++ b/source/blender/makesrna/intern/CMakeLists.txt
@@ -47,7 +47,6 @@ set(DEFSRC
   rna_fluid.c
   rna_gpencil.c
   rna_gpencil_modifier.c
-  rna_hair.c
   rna_image.c
   rna_key.c
   rna_lattice.c
@@ -69,7 +68,6 @@ set(DEFSRC
   rna_packedfile.c
   rna_palette.c
   rna_particle.c
-  rna_pointcloud.c
   rna_pose.c
   rna_render.c
   rna_rigidbody.c
@@ -79,7 +77,6 @@ set(DEFSRC
   rna_sculpt_paint.c
   rna_sequencer.c
   rna_shader_fx.c
-  rna_simulation.c
   rna_sound.c
   rna_space.c
   rna_speaker.c
@@ -99,6 +96,16 @@ set(DEFSRC
   rna_xr.c
 )
 
+if(WITH_EXPERIMENTAL_FEATURES)
+  add_definitions(-DWITH_PARTICLE_NODES)
+  add_definitions(-DWITH_HAIR_NODES)
+  list(APPEND DEFSRC
+    rna_pointcloud.c
+    rna_simulation.c
+    rna_hair.c
+  )
+endif()
+
 set(APISRC
   rna_action_api.c
   rna_animation_api.c
diff --git a/source/blender/makesrna/intern/makesrna.c b/source/blender/makesrna/intern/makesrna.c
index 779e4363be0..d34f431c848 100644
--- a/source/blender/makesrna/intern/makesrna.c
+++ b/source/blender/makesrna/intern/makesrna.c
@@ -4285,7 +4285,9 @@ static RNAProcessItem PROCESS_ITEMS[] = {
     {"rna_dynamicpaint.c", NULL, RNA_def_dynamic_paint},
     {"rna_fcurve.c", "rna_fcurve_api.c", RNA_def_fcurve},
     {"rna_gpencil.c", NULL, RNA_def_gpencil},
+#ifdef WITH_HAIR_NODES
     {"rna_hair.c", NULL, RNA_def_hair},
+#endif
     {"rna_image.c", "rna_image_api.c", RNA_def_image},
     {"rna_key.c", NULL, RNA_def_key},
     {"rna_light.c", NULL, RNA_def_light},
@@ -4308,7 +4310,9 @@ static RNAProcessItem PROCESS_ITEMS[] = {
     {"rna_packedfile.c", NULL, RNA_def_packedfile},
     {"rna_palette.c", NULL, RNA_def_palette},
     {"rna_particle.c", NULL, RNA_def_particle},
+#ifdef WITH_PARTICLE_NODES
     {"rna_pointcloud.c", NULL, RNA_def_pointcloud},
+#endif
     {"rna_pose.c", "rna_pose_api.c", RNA_def_pose},
     {"rna_curveprofile.c", NULL, RNA_def_profile},
     {"rna_lightprobe.c", NULL, RNA_def_lightprobe},
@@ -4318,7 +4322,9 @@ static RNAProcessItem PROCESS_ITEMS[] = {
     {"rna_screen.c", NULL, RNA_def_screen},
     {"rna_sculpt_paint.c", NULL, RNA_def_sculpt_paint},
     {"rna_sequencer.c", "rna_sequencer_api.c", RNA_def_sequencer},
+#ifdef WITH_PARTICLE_NODES
     {"rna_simulation.c", NULL, RNA_def_simulation},
+#endif
     {"rna_space.c", "rna_space_api.c", RNA_def_space},
     {"rna_speaker.c", NULL, RNA_def_speaker},
     {"rna_test.c", NULL, RNA_def_test},
diff --git a/source/blender/makesrna/intern/rna_ID.c b/source/blender/makesrna/intern/rna_ID.c
index e9ca0d577ce..f1c125fcbb9 100644
--- a/source/blender/makesrna/intern/rna_ID.c
+++ b/source/blender/makesrna/intern/rna_ID.c
@@ -251,9 +251,11 @@ short RNA_type_to_ID_code(const StructRNA *type)
   if (base_type == &RNA_FreestyleLineStyle) {
     return ID_LS;
   }
+#  ifdef WITH_HAIR_NODES
   if (base_type == &RNA_Hair) {
     return ID_HA;
   }
+#  endif
   if (base_type == &RNA_Lattice) {
     return ID_LT;
   }
@@ -287,9 +289,11 @@ short RNA_type_to_ID_code(const StructRNA *type)
   if (base_type == &RNA_PaintCurve) {
     return ID_PC;
   }
+#  ifdef WITH_PARTICLE_NODES
   if (base_type == &RNA_PointCloud) {
     return ID_PT;
   }
+#  endif
   if (base_type == &RNA_LightProbe) {
     return ID_LP;
   }
@@ -299,9 +303,11 @@ short RNA_type_to_ID_code(const StructRNA *type)
   if (base_type == &RNA_Screen) {
     return ID_SCR;
   }
+#  ifdef WITH_PARTICLE_NODES
   if (base_type == &RNA_Simulation) {
     return ID_SIM;
   }
+#  endif
   if (base_type == &RNA_Sound) {
     return ID_SO;
   }
@@ -355,7 +361,11 @@ StructRNA *ID_code_to_RNA_type(short idcode)
     case ID_GR:
       return &RNA_Collection;
     case ID_HA:
+#  ifdef WITH_HAIR_NODES
       return &RNA_Hair;
+#  else
+      return &RNA_ID;
+#  endif
     case ID_IM:
       return &RNA_Image;
     case ID_KE:
@@ -389,7 +399,11 @@ StructRNA *ID_code_to_RNA_type(short idcode)
     case ID_PC:
       return &RNA_PaintCurve;
     case ID_PT:
+#  ifdef WITH_PARTICLE_NODES
       return &RNA_PointCloud;
+#  else
+      return &RNA_ID;
+#  endif
     case ID_LP:
       return &RNA_LightProbe;
     case ID_SCE:
@@ -397,7 +411,11 @@ StructRNA *ID_code_to_RNA_type(short idcode)
     case ID_SCR:
       return &RNA_Screen;
     case ID_SIM:
+#  ifdef WITH_PARTICLE_NODES
       return &RNA_Simulation;
+#  else
+      return &RNA_ID;
+#  endif
     case ID_SO:
       return &RNA_Sound;
     case ID_SPK:
diff --git a/source/blender/makesrna/intern/rna_internal.h b/source/blender/makesrna/intern/rna_internal.h
index 8045279eef2..6254e40a410 100644
--- a/source/blender/makesrna/intern/rna_internal.h
+++ b/source/blender/makesrna/intern/rna_internal.h
@@ -455,10 +455,16 @@ void RNA_def_main_cachefiles(BlenderRNA *brna, PropertyRNA *cprop);
 void RNA_def_main_paintcurves(BlenderRNA *brna, PropertyRNA *cprop);
 void RNA_def_main_workspaces(BlenderRNA *brna, PropertyRNA *cprop);
 void RNA_def_main_lightprobes(BlenderRNA *brna, PropertyRNA *cprop);
+#ifdef WITH_PARTICLE_NODES
 void RNA_def_main_hairs(BlenderRNA *brna, PropertyRNA *cprop);
+#endif
+#ifdef WITH_HAIR_NODES
 void RNA_def_main_pointclouds(BlenderRNA *brna, PropertyRNA *cprop);
+#endif
 void RNA_def_main_volumes(BlenderRNA *brna, PropertyRNA *cprop);
+#ifdef WITH_PARTICLE_NODES
 void RNA_def_main_simulations(BlenderRNA *brna, PropertyRNA *cprop);
+#endif
 
 /* ID Properties */
 
diff --git a/source/blender/makesrna/intern/rna_main.c b/source/blender/makesrna/intern/rna_main.c
index 97702b06b6f..d83fca69278 100644
--- a/source/blender/makesrna/intern/rna_main.c
+++ b/source/blender/makesrna/intern/rna_main.c
@@ -109,7 +109,9 @@ RNA_MAIN_LISTBASE_FUNCS_DEF(collections)
 RNA_MAIN_LISTBASE_FUNCS_DEF(curves)
 RNA_MAIN_LISTBASE_FUNCS_DEF(fonts)
 RNA_MAIN_LISTBASE_FUNCS_DEF(gpencils)
+#  ifdef WITH_HAIR_NODES
 RNA_MAIN_LISTBASE_FUNCS_DEF(hairs)
+#  endif
 RNA_MAIN_LISTBASE_FUNCS_DEF(images)
 RNA_MAIN_LISTBASE_FUNCS_DEF(lattices)
 RNA_MAIN_LISTBASE_FUNCS_DEF(libraries)
@@ -126,11 +128,15 @@ RNA_MAIN_LISTBASE_FUNCS_DEF(objects)
 RNA_MAIN_LISTBASE_FUNCS_DEF(paintcurves)
 RNA_MAIN_LISTBASE_FUNCS_DEF(palettes)
 RNA_MAIN_LISTBASE_FUNCS_DEF(particles)
+#  ifdef WITH_PARTICLE_NODES
 RNA_MAIN_LISTBASE_FUNCS_DEF(pointclouds)
+#  endif
 RNA_MAIN_LISTBASE_FUNCS_DEF(scenes)
 RNA_MAIN_LISTBASE_FUNCS_DEF(screens)
 RNA_MAIN_LISTBASE_FUNCS_DEF(shapekeys)
+#  ifdef WITH_PARTICLE_NODES
 RNA_MAIN_LISTBASE_FUNCS_DEF(simulations)
+#  endif
 RNA_MAIN_LISTBASE_FUNCS_DEF(sounds)
 RNA_MAIN_LISTBASE_FUNCS_DEF(speakers)
 RNA_MAIN_LISTBASE_FUNCS_DEF(texts)
@@ -384,25 +390,31 @@ void RNA_def_main(BlenderRNA *brna)
        "LightProbes",
        "LightProbe data-blocks",
        RNA_def_main_lightprobes},
+#  ifdef WITH_HAIR_NODES
       {"hairs", "Hair", "rna_Main_hairs_begin", "Hairs", "Hair data-blocks", RNA_def_main_hairs},
+#  endif
+#  ifdef WITH_PARTICLE_NODES
       {"pointclouds",
        "PointCloud",
        "rna_Main_pointclouds_begin",
        "Point Clouds",
        "Point cloud data-blocks",
        RNA_def_main_pointclouds},
+#  endif
       {"volumes",
        "Volume",
        "rna_Main_volumes_begin",
        "Volumes",
        "Volume data-blocks",
        RNA_def_main_volumes},
+#  ifdef WITH_PARTICLE_NODES
       {"simulations",
        "Simulation",
        "rna_Main_simulations_begin",
        "Simulations",
        "Simulation data-blocks",
        RNA_def_main_simulations},
+#  endif
       {NULL, NULL, NULL, NULL, NULL, NULL},
   };
 
diff --git a/source/blender/makesrna/intern/rna_main_api.c b/source/blender/makesrna/intern/rna_main_api.c
index 990a5412093..7c941ddb524 100644
--- a/source/blender/makesrna/intern/rna_main_api.c
+++ b/source/blender/makesrna/intern/rna_main_api.c
@@ -708,6 +708,7 @@ static bGPdata *rna_Main_gpencils_new(Main *bmain, const char *name)
   return gpd;
 }
 
+#  ifdef WITH_HAIR_NODES
 static Hair *rna_Main_hairs_new(Main *bmain, const char *name)
 {
   char safe_name[MAX_ID_NAME - 2];
@@ -717,7 +718,9 @@ static Hair *rna_Main_hairs_new(Main *bmain, const char *name)
   id_us_min(&hair->id);
   return hair;
 }
+#  endif
 
+#  ifdef WITH_PARTICLE_NODES
 static PointCloud *rna_Main_pointclouds_new(Main *bmain, const char *name)
 {
   char safe_name[MAX_ID_NAME - 2];
@@ -727,6 +730,7 @@ static PointCloud *rna_Main_pointclouds_new(Main *bmain, const char *name)
   id_us_min(&pointcloud->id);
   return pointcloud;
 }
+#  endif
 
 static Volume *rna_Main_volumes_new(Main *bmain, const char *name)
 {
@@ -738,6 +742,7 @@ static Volume *rna_Main_volumes_new(Main *bmain, const char *name)
   return volume;
 }
 
+#  ifdef WITH_PARTICLE_NODES
 static Simulation *rna_Main_simulations_new(Main *bmain, const char *name)
 {
   char safe_name[MAX_ID_NAME - 2];
@@ -747,6 +752,7 @@ static Simulation *rna_Main_simulations_new(Main *bmain, const char *name)
   id_us_min(&simulation->id);
   return simulation;
 }
+#  endif
 
 /* tag functions, all the same */
 #  define RNA_MAIN_ID_TAG_FUNCS_DEF(_func_name, _listbase_name, _id_type) \
@@ -790,10 +796,16 @@ RNA_MAIN_ID_TAG_FUNCS_DEF(cachefiles, cachefiles, ID_CF)
 RNA_MAIN_ID_TAG_FUNCS_DEF(paintcurves, paintcurves, ID_PC)
 RNA_MAIN_ID_TAG_FUNCS_DEF(workspaces, workspaces, ID_WS)
 RNA_MAIN_ID_TAG_FUNCS_DEF(lightprobes, lightprobes, ID_LP)
+#  ifdef WITH_HAIR_NODES
 RNA_MAIN_ID_TAG_FUNCS_DEF(hairs, hairs, ID_HA)
+#  endif
+#  ifdef WITH_PARTICLE_NODES
 RNA_MAIN_ID_TAG_FUNCS_DEF(pointclouds, pointclouds, ID_PT)
+#  endif
 RNA_MAIN_ID_TAG_FUNCS_DEF(volumes, volumes, ID_VO)
+#  ifdef WITH_PARTICLE_NODES
 RNA_MAIN_ID_TAG_FUNCS_DEF(simulations, simulations, ID_SIM)
+#  endif
 
 #  undef RNA_MAIN_ID_TAG_FUNCS_DEF
 
@@ -2194,6 +2206,7 @@ void RNA_def_main_lightprobes(BlenderRNA *brna, PropertyRNA *cprop)
   RNA_def_parameter_flags(parm, 0, PARM_REQUIRED);
 }
 
+#  ifdef WITH_HAIR_NODES
 void RNA_def_main_hairs(BlenderRNA *brna, PropertyRNA *cprop)
 {
   StructRNA *srna;
@@ -2237,7 +2250,9 @@ void RNA_def_main_hairs(BlenderRNA *brna, PropertyRNA *cprop)
   parm = RNA_def_boolean(func, "value", 0, "Value", "");
   RNA_def_parameter_flags(parm, 0, PARM_REQUIRED);
 }
+#  endif
 
+#  ifdef WITH_PARTICLE_NODES
 void RNA_def_main_pointclouds(BlenderRNA *brna, PropertyRNA *cprop)
 {
   StructRNA *srna;
@@ -2284,6 +2299,7 @@ void RNA_def_main_pointclouds(BlenderRNA *brna, PropertyRNA *cprop)
   parm = RNA_def_boolean(func, "value", 0, "Value", "");
   RNA_def_parameter_flags(parm, 0, PARM_REQUIRED);
 }
+#  endif
 
 void RNA_def_main_volumes(BlenderRNA *brna, PropertyRNA *cprop)
 {
@@ -2329,6 +2345,7 @@ void RNA_def_main_volumes(BlenderRNA *brna, PropertyRNA *cprop)
   RNA_def_parameter_flags(parm, 0, PARM_REQUIRED);
 }
 
+#  ifdef WITH_PARTICLE_NODES
 void RNA_def_main_simulations(BlenderRNA *brna, PropertyRNA *cprop)
 {
   StructRNA *srna;
@@ -2368,5 +2385,6 @@ void RNA_def_main_simulations(BlenderRNA *brna, PropertyRNA *cprop)
   parm = RNA_def_boolean(func, "value", 0, "Value", "");
   RNA_def_parameter_flags(parm, 0, PARM_REQUIRED);
 }
+#  endif
 
 #endif
diff --git a/source/blender/makesrna/intern/rna_modifier.c b/source/blender/makesrna/intern/rna_modifier.c
index 65c6706a3b1..0338a094d14 100644
--- a/source/blender/makesrna/intern/rna_modifier.c
+++ b/source/blender/makesrna/intern/rna_modifier.c
@@ -723,7 +723,9 @@ static StructRNA *rna_Modifier_refine(struct PointerRNA *ptr)
     case eModifierType_WeightedNormal:
       return &RNA_WeightedNormalModifier;
     case eModifierType_Simulation:
+#  ifdef WITH_PARTICLE_NODES
       return &RNA_SimulationModifier;
+#  endif
     /* Default */
     case eModifierType_Fluidsim: /* deprecated */
     case eModifierType_None:
@@ -1630,6 +1632,7 @@ static void rna_ParticleInstanceModifier_particle_system_set(PointerRNA *ptr,
   CLAMP_MIN(psmd->psys, 1);
 }
 
+#  ifdef WITH_PARTICLE_NODES
 static void rna_SimulationModifier_simulation_update(Main *bmain, Scene *scene, PointerRNA *ptr)
 {
   SimulationModifierData *smd = ptr->data;
@@ -1672,6 +1675,7 @@ static void rna_SimulationModifier_data_path_set(PointerRNA *ptr, const char *va
     smd->data_path = NULL;
   }
 }
+#  endif
 
 /**
  * Special set callback that just changes the first bit of the expansion flag.
@@ -7007,6 +7011,7 @@ static void rna_def_modifier_weightednormal(BlenderRNA *brna)
   RNA_define_lib_overridable(false);
 }
 
+#  ifdef WITH_PARTICLE_NODES
 static void rna_def_modifier_simulation(BlenderRNA *brna)
 {
   StructRNA *srna;
@@ -7035,6 +7040,7 @@ static void rna_def_modifier_simulation(BlenderRNA *brna)
 
   RNA_define_lib_overridable(false);
 }
+#  endif
 
 void RNA_def_modifier(BlenderRNA *brna)
 {
@@ -7164,7 +7170,9 @@ void RNA_def_modifier(BlenderRNA *brna)
   rna_def_modifier_meshseqcache(brna);
   rna_def_modifier_surfacedeform(brna);
   rna_def_modifier_weightednormal(brna);
+#  ifdef WITH_PARTICLE_NODES
   rna_def_modifier_simulation(brna);
+#  endif
 }
 
 #endif
diff --git a/source/blender/makesrna/intern/rna_object.c b/source/blender/makesrna/intern/rna_object.c
index 08ca3f16b6d..39e1f17d33d 100644
--- a/source/blender/makesrna/intern/rna_object.c
+++ b/source/blender/makesrna/intern/rna_object.c
@@ -570,9 +570,17 @@ static StructRNA *rna_Object_data_typef(PointerRNA *ptr)
     case OB_GPENCIL:
       return &RNA_GreasePencil;
     case OB_HAIR:
+#  ifdef WITH_HAIR_NODES
       return &RNA_Hair;
+#  else
+      return &RNA_ID;
+#  endif
     case OB_POINTCLOUD:
+#  ifdef WITH_PARTICLE_NODES
       return &RNA_PointCloud;
+#  else
+      return &RNA_ID;
+#  endif
     case OB_VOLUME:
       return &RNA_Volume;
     default:
diff --git a/source/blender/makesrna/intern/rna_space.c b/source/blender/makesrna/intern/rna_space.c
index 317aa6bad5d..03a70be6def 100644
--- a/source/blender/makesrna/intern/rna_space.c
+++ b/source/blender/makesrna/intern/rna_space.c
@@ -2117,6 +2117,7 @@ static void rna_SpaceNodeEditor_node_tree_update(const bContext *C, PointerRNA *
   ED_node_tree_update(C);
 }
 
+#  ifdef WITH_PARTICLE_NODES
 static PointerRNA rna_SpaceNodeEditor_simulation_get(PointerRNA *ptr)
 {
   SpaceNode *snode = (SpaceNode *)ptr->data;
@@ -2148,6 +2149,7 @@ static void rna_SpaceNodeEditor_simulation_set(PointerRNA *ptr,
   }
   snode->id = &sim->id;
 }
+#  endif
 
 static int rna_SpaceNodeEditor_tree_type_get(PointerRNA *ptr)
 {
@@ -6208,6 +6210,7 @@ static void rna_def_space_node(BlenderRNA *brna)
   RNA_def_property_ui_text(
       prop, "ID From", "Data-block from which the edited data-block is linked");
 
+#  ifdef WITH_PARTICLE_NODES
   prop = RNA_def_property(srna, "simulation", PROP_POINTER, PROP_NONE);
   RNA_def_property_flag(prop, PROP_EDITABLE);
   RNA_def_property_struct_type(prop, "Simulation");
@@ -6218,6 +6221,7 @@ static void rna_def_space_node(BlenderRNA *brna)
                                  NULL,
                                  NULL);
   RNA_def_property_update(prop, NC_SPACE | ND_SPACE_NODE, NULL);
+#  endif
 
   prop = RNA_def_property(srna, "path", PROP_COLLECTION, PROP_NONE);
   RNA_def_property_collection_sdna(prop, NULL, "treepath", NULL);