AuroraMiddleware/qt5base-lts
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Use RGBA8888 always in the eglfs backingstore

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Do not try to be clever, this format works always.

Using RGBX8888 for windows without alpha buffer was a bad idea because
it broke renderToTexture widgets (QQuickWidget, QOpenGLWidget) which
failed to properly draw the transparent rect with this format.

Change-Id: I295d2f8c17490b59cc5e6b9d81035360da28ab3d
Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
This commit is contained in:
Laszlo Agocs 2014-07-08 18:29:29 +02:00
parent 91ae8cd044
commit 2978b7ed19
1 changed files with 1 additions and 8 deletions
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9
src/platformsupport/eglconvenience/qeglplatformbackingstore.cpp
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@ -231,14 +231,7 @@ void QEGLPlatformBackingStore::resize(const QSize &size, const QRegion &staticCo
if (!dstWin || (!dstWin->isRaster() && dstWin->window()->surfaceType() != QSurface::RasterGLSurface))
return;
// Child windows do not get real native surfaces and so share the same
// format as the parent, regardless of what has been requested. The
// exception is WA_TranslucentBackground that sets alphaBufferSize in the
// requested format, this has to be taken into account when compositing.
const bool translucent = m_window->window()->requestedFormat().alphaBufferSize() > 0;
const QImage::Format format = translucent ? QImage::Format_RGBA8888 : QImage::Format_RGBX8888;
m_image = QImage(size, format);
m_image = QImage(size, QImage::Format_RGBA8888);
m_window->create();