Fixed clipping bug in GL 2 engine.

When dumping the rectangle clip to the depth buffer due to needing to
intersect with a more complex clip, we didn't take into consideration
that writeClip will transform the path by the current matrix, whereas
the rectangle clip is in device coordinates. Thus, we need to map the
path by the inverse matrix.

Task-number: 260701
Reviewed-by: Trond

1 files changed, 1 insertions, 0 deletions

diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
index bbb285f..9386044 100644
--- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
+++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
@@ -1538,6 +1538,7 @@ void QGL2PaintEngineEx::clip(const QVectorPath &path, Qt::ClipOperation op)
     if (state()->rectangleClip.isValid() && op != Qt::NoClip && op != Qt::ReplaceClip) {
         QPainterPath path;
         path.addRect(state()->rectangleClip);
+        path = state()->matrix.inverted().map(path);
 
         state()->rectangleClip = QRect();
         d->updateDepthScissorTest();