Here is a list of all documented enum values with links to the documentation:

• D3DKMT_GPU_PREFERENCE_STATE_HIGH_PERFORMANCE : display_base.cpp
• D3DKMT_GPU_PREFERENCE_STATE_MINIMUM_POWER : display_base.cpp
• D3DKMT_GPU_PREFERENCE_STATE_NOT_FOUND : display_base.cpp
• D3DKMT_GPU_PREFERENCE_STATE_UNINITIALIZED : display_base.cpp
• D3DKMT_GPU_PREFERENCE_STATE_UNSPECIFIED : display_base.cpp
• D3DKMT_GPU_PREFERENCE_STATE_USER_SPECIFIED_GPU : display_base.cpp