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Win32: Add warning when option will have no effect

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The GPU driver only looks in the executable for the symbol requesting
the high-performance GPU, so enabling them when buidling GLFW as a DLL
will have no effect.

(cherry picked from commit 52ba8c7f07)
This commit is contained in:
Camilla Löwy 2021-03-15 00:48:05 +01:00
parent 0f46d089e8
commit b39c02b118
1 changed files with 4 additions and 0 deletions
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src/win32_init.c
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@ -39,6 +39,10 @@ static const GUID _glfw_GUID_DEVINTERFACE_HID =
#if defined(_GLFW_USE_HYBRID_HPG) || defined(_GLFW_USE_OPTIMUS_HPG) #if defined(_GLFW_USE_HYBRID_HPG) || defined(_GLFW_USE_OPTIMUS_HPG)
#if defined(_GLFW_BUILD_DLL)
#warning "These symbols must be exported by the executable and have no effect in a DLL"
#endif
// Executables (but not DLLs) exporting this symbol with this value will be // Executables (but not DLLs) exporting this symbol with this value will be
// automatically directed to the high-performance GPU on Nvidia Optimus systems // automatically directed to the high-performance GPU on Nvidia Optimus systems
// with up-to-date drivers // with up-to-date drivers