Fix crash after changing the startup view

Task-number: QT3DS-3194
Change-Id: I6be9a6ca881b354ba3890effb78d42604ba2d94b
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@qt.io>

2 files changed, 17 insertions, 0 deletions

diff --git a/src/Authoring/Studio/Render/StudioRendererTranslation.cpp b/src/Authoring/Studio/Render/StudioRendererTranslation.cpp
index 6d31ae44..752a84d7 100644
--- a/src/Authoring/Studio/Render/StudioRendererTranslation.cpp
+++ b/src/Authoring/Studio/Render/StudioRendererTranslation.cpp
@@ -2641,6 +2641,17 @@ void STranslation::Render(int inWidgetId, bool inDrawGuides, bool scenePreviewPa
                 }
 
                 if (object.m_Type == GraphObjectTypes::Camera) {
+                    if (m_InnerRect.isNull()) {
+                        // this happens when the initial view is not the camera view
+                        NVRenderRect thePresentationViewport = m_Context.GetPresentationViewport();
+                        m_InnerRect.m_Left = thePresentationViewport.m_X;
+                        m_InnerRect.m_Right = thePresentationViewport.m_X
+                                              + thePresentationViewport.m_Width;
+                        m_InnerRect.m_Bottom = thePresentationViewport.m_Y;
+                        m_InnerRect.m_Top = thePresentationViewport.m_Y
+                                            + thePresentationViewport.m_Height;
+                    }
+
                     QT3DSVec2 dim = QT3DSVec2(m_InnerRect.m_Right - m_InnerRect.m_Left,
                                               m_InnerRect.m_Top - m_InnerRect.m_Bottom);
                     NVRenderRectF theViewport(0, 0, dim.x, dim.y);
diff --git a/src/Authoring/Studio/Render/StudioRendererTranslation.h b/src/Authoring/Studio/Render/StudioRendererTranslation.h
index 0a3c7a81..45e86871 100644
--- a/src/Authoring/Studio/Render/StudioRendererTranslation.h
+++ b/src/Authoring/Studio/Render/StudioRendererTranslation.h
@@ -290,10 +290,16 @@ namespace studio {
             , m_Bottom(b)
         {
         }
+
         bool Contains(QT3DSI32 x, QT3DSI32 y) const
         {
             return x >= m_Left && x <= m_Right && y >= m_Bottom && y <= m_Top;
         }
+
+        bool isNull() const
+        {
+            return m_Left == 0 && m_Top == 0 && m_Right == 0 && m_Bottom == 0;
+        }
     };
 
     struct SDragPreparationResult