Force light gathering on pending light visibility change on size update

If there is a pending light visibility change when
Q3DSSceneManager::updateSizes is called, lights must be re-gathered
or Q3DSSceneManager::updateShadowMapStatus will assert as there are
currently inactive lights in layerData->lightsData->lightNodes.

Task-number: QT3DS-3066
Change-Id: Ic721715cd4fe4e640a9ce097b660df662ee0ee6d
Reviewed-by: Tomi Korpipää <tomi.korpipaa@qt.io>
Reviewed-by: Janne Kangas <janne.kangas@qt.io>
Reviewed-by: Jere Tuliniemi <jere.tuliniemi@qt.io>
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/runtime/q3dsscenemanager.cpp b/src/runtime/q3dsscenemanager.cpp
index 8dc7aa2..0b307b9 100644
--- a/src/runtime/q3dsscenemanager.cpp
+++ b/src/runtime/q3dsscenemanager.cpp
@@ -573,6 +573,13 @@ void Q3DSSceneManager::updateSizes(const QSize &size, qreal dpr, const QRect &vi
                 data->frameDirty = Q3DSGraphObjectAttached::TextDirty;
                 data->frameChangeFlags |= Q3DSTextNode::TextureImageDepChanges;
             }
+        } else if (obj->type() == Q3DSGraphObject::Light) {
+            // Force gathering of lights if there is a pending light visibility change
+            auto data = obj->attached<Q3DSNodeAttached>();
+            if (data->frameChangeFlags & Q3DSNode::EyeballChanges && data->layer3DS) {
+                auto layerData = data->layer3DS->attached<Q3DSLayerAttached>();
+                layerData->frameChangeFlags |= Q3DSLayerNode::LayerContentSubTreeLightsChange;
+            }
         }
     });
     if (forceTreeVisit)