MFXEnumImplementations expects the adapter index to be within a range of
valid Intel adapters produced by MFXLoad and the config filter. If a
system has one non-Intel high performance GPU and one Intel iGPU, OBS
and the test app will see the Intel iGPU as index 1 due to high
performance hints, but MFXEnumImplementations will expect only one valid
index, 0. In this scenario, passing a value of 1 to
MFXEnumImplementations will cause it to abort and return
MFX_ERR_NOT_FOUND (Provided index is out of possible range). This causes
subsequent capabilities testing to fail.
To avoid this, let's track how many non-Intel adapters we see and
subtract that number from adapterIdx to only pass valid index to
MFXEnumImplementations.
Ryan Foster
046560eadc