feat(web): wire Blender area light depth

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

@@ -5177,6 +5177,7 @@ json scene_ir_from_blend(const ParsedBlend &blend,
                         {"cascadeCount", read_integer(*blend.sdna, element, "cascade_count").value_or(4)},
                         {"areaSize", read_float(*blend.sdna, element, "area_size").value_or(0.25f)},
                         {"areaSizeY", read_float(*blend.sdna, element, "area_sizey").value_or(0.25f)},
+                        {"areaSizeZ", read_float(*blend.sdna, element, "area_sizez").value_or(0.25f)},
                         {"areaSpread", read_float(*blend.sdna, element, "area_spread").value_or(3.14159265f)},
                         {"sunAngle", read_float(*blend.sdna, element, "sun_angle").value_or(0.00918f)}});
     }

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

@@ -5546,6 +5546,29 @@ bool web_engine_blend_main_set_light_cascade_controls(WebBlendMainState *state,
   return true;
 }
 
+bool web_engine_blend_main_set_light_area_size_z(WebBlendMainState *state,
+                                                  const char *target_id,
+                                                  const float area_size_z,
+                                                  std::string &error)
+{
+  if (state == nullptr || state->main == nullptr || target_id == nullptr) {
+    error = "RENDER_PROPERTY_INVALID: light area size Z target is missing";
+    return false;
+  }
+  Light *light = find_light(state->main, target_id);
+  if (light == nullptr || !ensure_single_user_data(state->main, &light->id, error)) {
+    if (error.empty()) error = "RENDER_PROPERTY_INVALID: light was not found";
+    return false;
+  }
+  if (!std::isfinite(area_size_z) || area_size_z < 0.0001f || area_size_z > 1.0e9f) {
+    error = "RENDER_PROPERTY_INVALID: light area size Z is outside the bounded range";
+    return false;
+  }
+  light->area_sizez = area_size_z;
+  light->id.recalc |= ID_RECALC_PARAMETERS;
+  return true;
+}
+
 bool web_engine_blend_main_set_render_properties(WebBlendMainState *state,
                                                   const char *target_id,
                                                   const char *properties_json,
@@ -5742,7 +5765,7 @@ bool web_engine_blend_main_set_render_properties(WebBlendMainState *state,
   if (strncmp(target_id, "light:", 6) == 0) {
     Light *light = find_light(state->main, target_id);
     if (light == nullptr || !ensure_single_user_data(state->main, &light->id, error)) return false;
-    if (!reject_unknown({"type", "areaShape", "diffuseFactor", "specularFactor", "transmissionFactor", "volumeFactor", "attenuationDistance", "shadowFilterRadius", "shadowMaximumResolution", "shadowJitterOverblur", "cascadeMaxDistance", "cascadeExponent", "cascadeFade", "cascadeCount", "color", "energy", "exposure", "temperature", "useTemperature",
+    if (!reject_unknown({"type", "areaShape", "diffuseFactor", "specularFactor", "transmissionFactor", "volumeFactor", "attenuationDistance", "shadowFilterRadius", "shadowMaximumResolution", "shadowJitterOverblur", "cascadeMaxDistance", "cascadeExponent", "cascadeFade", "cascadeCount", "areaSizeZ", "color", "energy", "exposure", "temperature", "useTemperature",
                          "castsShadow", "radius", "spotAngle", "spotBlend", "areaSize",
                          "areaSizeY", "areaSpread", "sunAngle"}))
     {
@@ -5818,6 +5841,13 @@ bool web_engine_blend_main_set_render_properties(WebBlendMainState *state,
       if (max_distance < 0.0f || exponent < 0.0f || fade < 0.0f ||
           !web_engine_blend_main_set_light_cascade_controls(state, target_id, max_distance, exponent, fade, count, error)) return false;
     }
+    if (properties.contains("areaSizeZ")) {
+      if (!properties["areaSizeZ"].is_number()) {
+        error = "RENDER_PROPERTY_INVALID: areaSizeZ must be numeric";
+        return false;
+      }
+      if (!web_engine_blend_main_set_light_area_size_z(state, target_id, properties["areaSizeZ"].get<float>(), error)) return false;
+    }
     if (!read_color("color", &light->r) ||
         !read_float("energy", 0.0f, 1.0e9f, light->energy) ||
         !read_float("exposure", -20.0f, 20.0f, light->exposure) ||

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

@@ -545,6 +545,10 @@ bool web_engine_blend_main_set_light_cascade_controls(WebBlendMainState *state,
                                                        float fade,
                                                        int count,
                                                        std::string &error);
+bool web_engine_blend_main_set_light_area_size_z(WebBlendMainState *state,
+                                                  const char *target_id,
+                                                  float area_size_z,
+                                                  std::string &error);
 bool web_engine_blend_main_set_scene_properties(WebBlendMainState *state,
                                                  const char *target_id,
                                                  const char *properties_json,