feat(web): add world lightgroup membership

blender-5.2.0/source/blender/web_engine/web_engine_api.cpp

@@ -1612,7 +1612,7 @@ EMSCRIPTEN_KEEPALIVE int web_engine_apply_command(const int handle,
              type == "insertGreasePencilFrame" || type == "removeGreasePencilFrame" ||
              type == "setGreasePencilStrokes" || type == "setVertexColors" ||
              type == "setVertexWeights" || type == "setCameraProperties" || type == "setLightProperties" ||
-             type == "setWorldProperties" || type == "setSceneProperties" || type == "setSceneRenderSettings" || type == "setSceneAudioSettings" || type == "setSceneUnitSettings" || type == "setSceneTimelineSettings" || type == "setScenePipelineSettings" || type == "setSceneBindings" || type == "setSceneViewLayerSettings" || type == "setSceneCollectionSettings" || type == "setSceneBorderSettings" || type == "setSceneSimplifySettings" || type == "setSceneColorManagement" || type == "setSceneImageFormat" || type == "setSceneMotionBlur" || type == "setSceneHairSettings" || type == "setSceneCompositorSettings" || type == "setScenePerformanceSettings" || type == "setSceneSamplingSettings" || type == "setSceneMultiviewSettings" || type == "setSceneStampSettings" || type == "setSceneLineSettings" || type == "setSceneViewLayerPassSettings" || type == "setSceneViewLayerAOVs" || type == "setSceneViewLayerLightgroups" || type == "setObjectLightgroup" ||
+             type == "setWorldProperties" || type == "setSceneProperties" || type == "setSceneRenderSettings" || type == "setSceneAudioSettings" || type == "setSceneUnitSettings" || type == "setSceneTimelineSettings" || type == "setScenePipelineSettings" || type == "setSceneBindings" || type == "setSceneViewLayerSettings" || type == "setSceneCollectionSettings" || type == "setSceneBorderSettings" || type == "setSceneSimplifySettings" || type == "setSceneColorManagement" || type == "setSceneImageFormat" || type == "setSceneMotionBlur" || type == "setSceneHairSettings" || type == "setSceneCompositorSettings" || type == "setScenePerformanceSettings" || type == "setSceneSamplingSettings" || type == "setSceneMultiviewSettings" || type == "setSceneStampSettings" || type == "setSceneLineSettings" || type == "setSceneViewLayerPassSettings" || type == "setSceneViewLayerAOVs" || type == "setSceneViewLayerLightgroups" || type == "setObjectLightgroup" || type == "setWorldLightgroup" ||
              type == "setSculptMeshAttributes" ||
              type == "sculptStroke") {
       if (!engine->authoritative_commands || engine->authoritative_main == nullptr) {
@@ -2352,6 +2352,12 @@ EMSCRIPTEN_KEEPALIVE int web_engine_apply_command(const int handle,
         applied = name != "\x01" && web_engine_blend_main_set_object_lightgroup(
             engine->authoritative_main, command.value("objectId", "").c_str(), name.c_str(), main_error);
       }
+      else if (type == "setWorldLightgroup") {
+        const json lightgroup = command.value("lightgroup", json(nullptr));
+        const std::string name = lightgroup.is_null() ? std::string() : lightgroup.is_string() ? lightgroup.get<std::string>() : std::string("\x01");
+        applied = name != "\x01" && web_engine_blend_main_set_world_lightgroup(
+            engine->authoritative_main, command.value("dataId", "").c_str(), name.c_str(), main_error);
+      }
       else if (type == "setSculptMeshAttributes") {
         const json attributes = command.value("attributes", json::object());
         applied = web_engine_blend_main_set_sculpt_attributes(

blender-5.2.0/source/blender/web_engine/web_engine_blend_reader.cpp

@@ -5178,6 +5178,12 @@ json scene_ir_from_blend(const ParsedBlend &blend,
                      {"color", json::array({horizon_r, horizon_g, horizon_b})},
                      {"exposure", exposure},
                      {"backgroundVisible", true} };
+      if (const std::optional<uint64_t> lightgroup_pointer = read_pointer(*blend.sdna, element, "lightgroup")) {
+        if (const std::optional<ElementRef> membership = element_for_pointer(blend, *lightgroup_pointer)) {
+          const std::string lightgroup_name = read_string(*blend.sdna, *membership, "name");
+          if (!lightgroup_name.empty()) world["lightgroup"] = lightgroup_name;
+        }
+      }
       const int64_t world_mode = read_integer(*blend.sdna, element, "mode").value_or(0);
       const int64_t mist_type = read_integer(*blend.sdna, element, "mistype").value_or(0);
       world["mist"] = {{"enabled", (world_mode & 1) != 0},

blender-5.2.0/source/blender/web_engine/web_engine_main_state.cpp

@@ -6805,6 +6805,20 @@ bool web_engine_blend_main_set_object_lightgroup(WebBlendMainState *state,
   return true;
 }
 
+bool web_engine_blend_main_set_world_lightgroup(WebBlendMainState *state,
+                                                 const char *world_id,
+                                                 const char *lightgroup_name,
+                                                 std::string &error)
+{
+  if (state == nullptr || state->main == nullptr || world_id == nullptr || lightgroup_name == nullptr) { error = "RENDER_PROPERTY_INVALID: world lightgroup target is missing"; return false; }
+  World *world = find_world(state->main, world_id);
+  if (world == nullptr || world->id.lib != nullptr) { error = "LINKED_DATA_MUTATION_BLOCKED: World lightgroup is not editable"; return false; }
+  if (strlen(lightgroup_name) >= 64) { error = "RENDER_PROPERTY_INVALID: world lightgroup name exceeds the bounded size"; return false; }
+  BKE_lightgroup_membership_set(&world->lightgroup, lightgroup_name);
+  world->id.recalc |= ID_RECALC_PARAMETERS;
+  return true;
+}
+
 bool web_engine_blend_main_write(WebBlendMainState *state,
                                  std::vector<uint8_t> &bytes,
                                  std::string &error)

blender-5.2.0/source/blender/web_engine/web_engine_main_state.h

@@ -622,6 +622,10 @@ bool web_engine_blend_main_set_object_lightgroup(WebBlendMainState *state,
                                                   const char *object_id,
                                                   const char *lightgroup_name,
                                                   std::string &error);
+bool web_engine_blend_main_set_world_lightgroup(WebBlendMainState *state,
+                                                 const char *world_id,
+                                                 const char *lightgroup_name,
+                                                 std::string &error);
 bool web_engine_blend_main_write(WebBlendMainState *state,
                                  std::vector<uint8_t> &bytes,
                                  std::string &error);