Details
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Technical task
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Resolution: Done
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P2: Important
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None
Description
As QTBUG-78648 shows, sometimes we will want to use a software-based adapter / physical device. For APIs other than D3D and Vulkan this will not be applicable as we do not have the necessary level of support for enumerating adapters / physical devices.
To make this simple, QRhi has a flag called PreferSoftwareRenderer which picks the first software / CPU adapter / physical device. This may also be handy for testing (CI) purposes later on. As the public interface to QRhi is currently Qt Quick, we need to have a QSG_ environment variable that corresponds to this flag.
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