Details
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Bug
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Resolution: Unresolved
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P2: Important
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5.15.10, 6.2.6, 6.4.0, 6.5.3, 6.6.0 Beta4
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Windows
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2991c66b75 (qt/qtbase/dev) 2991c66b75 (qt/tqtc-qtbase/dev) 3ce2e00891 (qt/qtbase/6.4) 3ce2e00891 (qt/tqtc-qtbase/6.4)
Description
"When a window is shown, it always seems to be showing up as a white window for a while on Windows. This is quite annoying especially on dark themes.
Basically just this reproduces the issue:
import QtQuick.Window 2.15 Window { visible: true color: "black" }
It is not an issue in Qt 5.15 with ANGLE, but it is in Qt 6 with Direct3D backend. Here are results per software backend:
| backend | result |
|---|---|
| 5.15.10 - desktop OpenGL | flashes |
| 5.15.10 - ANGLE | no flashing |
| 5.15.10 - opengl32sw.dll | no flashing |
| 6.4.0-b4 - Direct3D 11 | flashes |
| 6.4.0-b4 - Vulkan | flashes |
| 6.4.0-b4 - OpenGL | flashes |
| 6.4.0-b4 - Software | no flashing |
Attachments
Issue Links
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- Open
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Gerrit Reviews
| For Gerrit Dashboard: QTBUG-106583 | ||||||
|---|---|---|---|---|---|---|
| # | Subject | Branch | Project | Status | CR | V |
| 559064,1 | Apply system background color for top level window | dev | qt/qtbase | Status: NEW | 0 | 0 |
| 440060,12 | Apply system background color for top level window | dev | qt/qtbase | Status: MERGED | +2 | 0 |
| 443512,2 | Apply system background color for top level window | 6.4 | qt/qtbase | Status: MERGED | +2 | 0 |
| 471448,16 | Windows: Erase background using palette on first draw | dev | qt/qtbase | Status: DEFERRED | +1 | 0 |