From d67d83dd85d12dbadc8b3443ccc73c1f65cf49f7 Mon Sep 17 00:00:00 2001
From: Uwe Rathmann <Uwe.Rathmann@tigertal.de>
Date: Tue, 29 Oct 2019 07:02:30 +0100
Subject: [PATCH] using QOpenGLPaintDevice::setPaintFlipped

---
 src/nodes/QskTextureRenderer.cpp | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/src/nodes/QskTextureRenderer.cpp b/src/nodes/QskTextureRenderer.cpp
index aaedfcaf..a5572054 100644
--- a/src/nodes/QskTextureRenderer.cpp
+++ b/src/nodes/QskTextureRenderer.cpp
@@ -38,6 +38,7 @@ static uint qskCreateTextureOpenGL(
     QOpenGLFramebufferObject multisampledFbo( width, height, format1 );
 
     QOpenGLPaintDevice pd( width, height );
+    pd.setPaintFlipped( true );
 
     {
         QPainter painter( &pd );
@@ -66,12 +67,10 @@ static uint qskCreateTextureOpenGL(
 
     QOpenGLFramebufferObject fbo( width, height, format2 );
 
-    // Mirror vertically
-    const QRect sourceRect( 0, 0, width, height );
-    const QRect targetRect( 0, height, width, -height );
+    const QRect fboRect( 0, 0, width, height );
 
     QOpenGLFramebufferObject::blitFramebuffer(
-        &fbo, sourceRect, &multisampledFbo, targetRect );
+        &fbo, fboRect, &multisampledFbo, fboRect );
 
     return fbo.takeTexture();
 }