Trick to tell AMD and Nvidia drivers to use the most powerful GPU instead of a lower-performance (such as integrated) GPU
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| #ifdef _WIN32 | |
| // Use discrete GPU by default. | |
| extern "C" { | |
| // http://developer.download.nvidia.com/devzone/devcenter/gamegraphics/files/OptimusRenderingPolicies.pdf | |
| __declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001; | |
| | |
| // http://developer.amd.com/community/blog/2015/10/02/amd-enduro-system-for-developers/ | |
| __declspec(dllexport) int AmdPowerXpressRequestHighPerformance = 1; | |
| } | |
| #endif |
Here is another AMD link: https://gpuopen.com/amdpowerxpressrequesthighperformance/
Dumb question: Are these relevant in Linux (or OSX for that matter)?
No, this is not relevant for anything other than Windows.
More dumb question: There's nothing similar for Intel (integrated HD Graphics), right?
More dumb question: can I do this somehow from a managed C# application? It does Pinvoke for the purpose of calling native algos, but how would I extern "C" { __declspec(dllexport) ... } such properties to be picked up by the drivers? Can any of my native DLLs export this and it will be picked up?
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Sadly, that AMD link has expired and I haven't found a better reference anywhere, other than this forum post: https://community.amd.com/thread/169965