diff --git a/core/os/os.h b/core/os/os.h index 63cc6ed50e6..324867c6649 100644 --- a/core/os/os.h +++ b/core/os/os.h @@ -137,6 +137,7 @@ public: int get_display_driver_id() const { return _display_driver_id; } virtual Vector get_video_adapter_driver_info() const = 0; + virtual bool get_user_prefers_integrated_gpu() const { return false; } void print_error(const char *p_function, const char *p_file, int p_line, const char *p_code, const char *p_rationale, bool p_editor_notify = false, Logger::ErrorType p_type = Logger::ERR_ERROR); void print(const char *p_format, ...) _PRINTF_FORMAT_ATTRIBUTE_2_3; diff --git a/platform/windows/os_windows.cpp b/platform/windows/os_windows.cpp index 9025f53f42b..bceaeea01da 100644 --- a/platform/windows/os_windows.cpp +++ b/platform/windows/os_windows.cpp @@ -622,6 +622,54 @@ Vector OS_Windows::get_video_adapter_driver_info() const { return info; } +bool OS_Windows::get_user_prefers_integrated_gpu() const { + // On Windows 10, the preferred GPU configured in Windows Settings is + // stored in the registry under the key + // `HKEY_CURRENT_USER\SOFTWARE\Microsoft\DirectX\UserGpuPreferences` + // with the name being the EXE path. The value is in the form of + // `GpuPreference=1;`, with the value being 1 for integrated GPU and 2 + // for discrete GPU. On Windows 11, there may be more flags, separated + // by semicolons. + + WCHAR exe_path[32768]; + if (GetModuleFileNameW(nullptr, exe_path, sizeof(exe_path) / sizeof(exe_path[0])) >= sizeof(exe_path) / sizeof(exe_path[0])) { + // Paths should never be longer than 32767, but just in case. + return false; + } + + LPCWSTR subkey = L"SOFTWARE\\Microsoft\\DirectX\\UserGpuPreferences"; + HKEY hkey = nullptr; + LSTATUS result = RegOpenKeyExW(HKEY_CURRENT_USER, subkey, 0, KEY_READ, &hkey); + if (result != ERROR_SUCCESS) { + return false; + } + + DWORD size = 0; + result = RegGetValueW(hkey, nullptr, exe_path, RRF_RT_REG_SZ, nullptr, nullptr, &size); + if (result != ERROR_SUCCESS || size == 0) { + RegCloseKey(hkey); + return false; + } + + Vector buffer; + buffer.resize(size / sizeof(WCHAR)); + result = RegGetValueW(hkey, nullptr, exe_path, RRF_RT_REG_SZ, nullptr, (LPBYTE)buffer.ptrw(), &size); + if (result != ERROR_SUCCESS) { + RegCloseKey(hkey); + return false; + } + + RegCloseKey(hkey); + const String flags = String::utf16((const char16_t *)buffer.ptr(), size / sizeof(WCHAR)); + + for (const String &flag : flags.split(";", false)) { + if (flag == "GpuPreference=1") { + return true; + } + } + return false; +} + OS::DateTime OS_Windows::get_datetime(bool p_utc) const { SYSTEMTIME systemtime; if (p_utc) { diff --git a/platform/windows/os_windows.h b/platform/windows/os_windows.h index b6a21ed42dd..9c7b98d7fdd 100644 --- a/platform/windows/os_windows.h +++ b/platform/windows/os_windows.h @@ -172,6 +172,7 @@ public: virtual String get_version() const override; virtual Vector get_video_adapter_driver_info() const override; + virtual bool get_user_prefers_integrated_gpu() const override; virtual void initialize_joypads() override {} diff --git a/servers/rendering/rendering_device.cpp b/servers/rendering/rendering_device.cpp index c65d3bec950..27e07969762 100644 --- a/servers/rendering/rendering_device.cpp +++ b/servers/rendering/rendering_device.cpp @@ -82,11 +82,12 @@ static String _get_device_type_name(const RenderingContextDriver::Device &p_devi } static uint32_t _get_device_type_score(const RenderingContextDriver::Device &p_device) { + static const bool prefer_integrated = OS::get_singleton()->get_user_prefers_integrated_gpu(); switch (p_device.type) { case RenderingContextDriver::DEVICE_TYPE_INTEGRATED_GPU: - return 4; + return prefer_integrated ? 5 : 4; case RenderingContextDriver::DEVICE_TYPE_DISCRETE_GPU: - return 5; + return prefer_integrated ? 4 : 5; case RenderingContextDriver::DEVICE_TYPE_VIRTUAL_GPU: return 3; case RenderingContextDriver::DEVICE_TYPE_CPU: