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Fredericvo

DX11 AmdPowerXpressRequestHighPerformance not working Win10

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I have a VAIO laptop with dual GPUs (HD 3000 + AMD Radeon 7400 M) and I can't seem to get it to select the high powered device with

__declspec(dllexport) int AmdPowerXpressRequestHighPerformance = 1;

 

I use Rastertek's init code which always worked when I used Win7 (and no declspecs) and I now assume it had somehow enumerated the high powered one first by coincidence. I became aware of this dual gpu problem when I tried running my code on another person's laptop where the proposed solution were these declspecs and it worked (an Nvidia system). Last year I upgraded my laptop to Win10 and didn't expermient with DX11 anymore until I wanted to suddenly play with it again and discovered that the pure rastertek's code didn't work (it enums the HD 3000 first) and remembered the declspecs, added them and... nothing. It didn't work. I have Catalyst 15.xx though and it should've worked since 13.xx

I'd like init code that's guaranteed to work everywhere though, not just quick hacks for my own laptop.

 

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