Use viewport clear color from fg node nearest the leaf

Change-Id: I803d6fabe8d2d0969908348f5e7ecbd08fbfee92
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/src/render/backend/renderview.cpp b/src/render/backend/renderview.cpp
index 2530ad83d..d7b5975cc 100644
--- a/src/render/backend/renderview.cpp
+++ b/src/render/backend/renderview.cpp
@@ -352,9 +352,12 @@ void RenderView::setConfigFromFrameGraphLeafNode(FrameGraphNode *fgLeaf)
             }
             ViewportNode *vpNode = static_cast<ViewportNode *>(node);
             *m_viewport = computeViewport(*m_viewport, vpNode);
+
+            // We take the clear color from the viewport node nearest the leaf
             if (!m_clearColor)
                 m_clearColor = m_allocator->allocate<QColor>();
-            *m_clearColor = vpNode->clearColor();
+            if (!m_clearColor->isValid())
+                *m_clearColor = vpNode->clearColor();
             break;
         }