diff options
Diffstat (limited to 'src/opengl/qpaintengine_opengl.cpp')
| -rw-r--r-- | src/opengl/qpaintengine_opengl.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/opengl/qpaintengine_opengl.cpp b/src/opengl/qpaintengine_opengl.cpp index d98cd7c..d5bf1dc 100644 --- a/src/opengl/qpaintengine_opengl.cpp +++ b/src/opengl/qpaintengine_opengl.cpp @@ -1331,7 +1331,7 @@ bool QOpenGLPaintEngine::begin(QPaintDevice *pdev) d->offscreen.begin(); const QColor &c = d->drawable.backgroundColor(); - glClearColor(c.redF(), c.greenF(), c.blueF(), 1.0); + glClearColor(c.redF(), c.greenF(), c.blueF(), d->drawable.format().alpha() ? c.alphaF() : 1.0); if (d->drawable.context()->d_func()->clear_on_painter_begin && d->drawable.autoFillBackground()) { GLbitfield clearBits = GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT; #ifndef QT_OPENGL_ES |