1 files changed, 16 insertions, 2 deletions
diff --git a/src/runtimerender/rendererimpl/Qt3DSRendererImplLayerRenderData.cpp b/src/runtimerender/rendererimpl/Qt3DSRendererImplLayerRenderData.cpp
index 362a602..43934b1 100644
--- a/src/runtimerender/rendererimpl/Qt3DSRendererImplLayerRenderData.cpp
+++ b/src/runtimerender/rendererimpl/Qt3DSRendererImplLayerRenderData.cpp
@@ -1490,8 +1490,15 @@ namespace render {
                 theRenderContext, &NVRenderContext::GetViewport, &NVRenderContext::SetViewport,
                 theNewViewport);
             QT3DSVec4 clearColor(0.0f);
-            if (m_Layer.m_Background == LayerBackground::Color)
+            if (m_Layer.m_Background == LayerBackground::Color) {
                 clearColor = m_Layer.m_ClearColor;
+                // Framebuffer holds premultiplied colors so the clearcolor must be premultiplied
+                if (clearColor.w < 1.0f) {
+                    clearColor.x *= clearColor.w;
+                    clearColor.y *= clearColor.w;
+                    clearColor.z *= clearColor.w;
+                }
+            }
 
             NVRenderContextScopedProperty<QT3DSVec4> __clearColor(
                 theRenderContext, &NVRenderContext::GetClearColor, &NVRenderContext::SetClearColor,
@@ -1776,9 +1783,16 @@ namespace render {
             theContext.SetScissorRect(
                 m_LayerPrepResult->GetLayerToPresentationScissorRect().ToIntegerRect());
             if (m_Layer.m_Background == LayerBackground::Color) {
+                QT3DSVec4 clearColor = m_Layer.m_ClearColor;
+                // Framebuffer holds premultiplied colors so the clearcolor must be premultiplied
+                if (clearColor.w < 1.0f) {
+                    clearColor.x *= clearColor.w;
+                    clearColor.y *= clearColor.w;
+                    clearColor.z *= clearColor.w;
+                }
                 NVRenderContextScopedProperty<QT3DSVec4> __clearColor(
                     theContext, &NVRenderContext::GetClearColor, &NVRenderContext::SetClearColor,
-                    m_Layer.m_ClearColor);
+                    clearColor);
                 theContext.Clear(NVRenderClearValues::Color);
             }
             RenderToViewport();