3 files changed, 8 insertions, 0 deletions
diff --git a/src/opengl/qglframebufferobject.cpp b/src/opengl/qglframebufferobject.cpp
index 15880108f3..1c802cabcb 100644
--- a/src/opengl/qglframebufferobject.cpp
+++ b/src/opengl/qglframebufferobject.cpp
@@ -1232,6 +1232,9 @@ int QGLFramebufferObject::metric(PaintDeviceMetric metric) const
     case PdmPhysicalDpiY:
         return qRound(dpmy * 0.0254);
 
+    case QPaintDevice::PdmDevicePixelRatio:
+        return 1;
+
     default:
         qWarning("QGLFramebufferObject::metric(), Unhandled metric type: %d.\n", metric);
         break;
diff --git a/src/opengl/qglpaintdevice.cpp b/src/opengl/qglpaintdevice.cpp
index a3779218d2..ef9bdba070 100644
--- a/src/opengl/qglpaintdevice.cpp
+++ b/src/opengl/qglpaintdevice.cpp
@@ -67,6 +67,8 @@ int QGLPaintDevice::metric(QPaintDevice::PaintDeviceMetric metric) const
         const QGLFormat f = format();
         return f.redBufferSize() + f.greenBufferSize() + f.blueBufferSize() + f.alphaBufferSize();
     }
+    case PdmDevicePixelRatio:
+        return 1;
     default:
         qWarning("QGLPaintDevice::metric() - metric %d not known", metric);
         return 0;
diff --git a/src/opengl/qglpixelbuffer.cpp b/src/opengl/qglpixelbuffer.cpp
index e514e34552..e5e7de0fff 100644
--- a/src/opengl/qglpixelbuffer.cpp
+++ b/src/opengl/qglpixelbuffer.cpp
@@ -462,6 +462,9 @@ int QGLPixelBuffer::metric(PaintDeviceMetric metric) const
     case PdmPhysicalDpiY:
         return qRound(dpmy * 0.0254);
 
+    case QPaintDevice::PdmDevicePixelRatio:
+        return 1;
+
     default:
         qWarning("QGLPixelBuffer::metric(), Unhandled metric type: %d\n", metric);
         break;