diff options
author | Allan Sandfeld Jensen <allan.jensen@qt.io> | 2017-06-01 17:45:02 +0200 |
---|---|---|
committer | Allan Sandfeld Jensen <allan.jensen@qt.io> | 2017-06-08 12:08:03 +0000 |
commit | a896d04eead3778377bfcd5c87c37e4461554a74 (patch) | |
tree | 51a60c9f4335f1356563c844b0e152df45f6461f | |
parent | ee04c572bbd9db28daa6a8eaba7f1d46d109ace7 (diff) |
Translate the adjusted deviceWindowRect with an adjusted offset
Otherwise the mismatched device pixel ratio will lead to incorrectly
offset blitting.
Task-number: QTBUG-59017
Change-Id: Iccbe9cd9704bccbceda4c8dafe87435b68b5cf3e
(cherry picked from commit dd8313d5be4fe4dd0defdf3eb78e2b47f0e2f20e)
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
-rw-r--r-- | src/gui/painting/qplatformbackingstore.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/gui/painting/qplatformbackingstore.cpp b/src/gui/painting/qplatformbackingstore.cpp index defdcfb4ad..dc1026a88c 100644 --- a/src/gui/painting/qplatformbackingstore.cpp +++ b/src/gui/painting/qplatformbackingstore.cpp @@ -239,6 +239,11 @@ static inline QRect deviceRect(const QRect &rect, QWindow *window) return deviceRect; } +static inline QPoint deviceOffset(const QPoint &pt, QWindow *window) +{ + return pt * window->devicePixelRatio(); +} + static QRegion deviceRegion(const QRegion ®ion, QWindow *window, const QPoint &offset) { if (offset.isNull() && window->devicePixelRatio() <= 1) @@ -326,6 +331,7 @@ void QPlatformBackingStore::composeAndFlush(QWindow *window, const QRegion ®i d_ptr->blitter->bind(); const QRect deviceWindowRect = deviceRect(QRect(QPoint(), window->size()), window); + const QPoint deviceWindowOffset = deviceOffset(offset, window); // Textures for renderToTexture widgets. for (int i = 0; i < textures->count(); ++i) { @@ -387,7 +393,7 @@ void QPlatformBackingStore::composeAndFlush(QWindow *window, const QRegion ®i d_ptr->blitter->setSwizzleRB(true); // The backingstore is for the entire tlw. // In case of native children offset tells the position relative to the tlw. - const QRect srcRect = toBottomLeftRect(deviceWindowRect.translated(offset), d_ptr->textureSize.height()); + const QRect srcRect = toBottomLeftRect(deviceWindowRect.translated(deviceWindowOffset), d_ptr->textureSize.height()); const QMatrix3x3 source = QOpenGLTextureBlitter::sourceTransform(srcRect, d_ptr->textureSize, origin); |