diff options
| -rw-r--r-- | src/plugins/platforms/winrt/qwinrtbackingstore.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/plugins/platforms/winrt/qwinrtbackingstore.cpp b/src/plugins/platforms/winrt/qwinrtbackingstore.cpp index b3bf52f09b..c23d48b2dd 100644 --- a/src/plugins/platforms/winrt/qwinrtbackingstore.cpp +++ b/src/plugins/platforms/winrt/qwinrtbackingstore.cpp @@ -118,11 +118,14 @@ void QWinRTBackingStore::flush(QWindow *window, const QRegion ®ion, const QPo if (d->size.isEmpty()) return; + const QRect bounds = region.boundingRect() & d->paintDevice.rect(); + if (bounds.isEmpty()) + return; + const bool ok = d->context->makeCurrent(window); if (!ok) qWarning("unable to flush"); - const QRect bounds = region.boundingRect(); glBindTexture(GL_TEXTURE_2D, d->fbo->texture()); // TODO: when ANGLE GLES3 support is finished, use the glPixelStorei functions to minimize upload glTexSubImage2D(GL_TEXTURE_2D, 0, 0, bounds.y(), d->size.width(), bounds.height(), |