Qt Qpa Plugin -

QPlatformBackingStore *QMinimalIntegration::createPlatformBackingStore(QWindow *window) const

Handles software rendering (raster). It provides a QPaintDevice (typically a QImage) that Qt draws onto, which you then copy/blit to the screen. qt qpa plugin

In this example, we will create a minimal plugin called . It will simulate a screen but doesn't actually render to hardware. This is great for understanding the structure. and pixel density.

return 32; // Bits per pixel

Represents a physical display. It tells Qt the geometry of the screen, refresh rate, and pixel density. qt qpa plugin