diff options
Diffstat (limited to 'src/frontend/duckstation/window_info.cpp')
| -rw-r--r-- | src/frontend/duckstation/window_info.cpp | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/src/frontend/duckstation/window_info.cpp b/src/frontend/duckstation/window_info.cpp new file mode 100644 index 0000000..5176dad --- /dev/null +++ b/src/frontend/duckstation/window_info.cpp @@ -0,0 +1,191 @@ +#include "window_info.h" +#include "common/log.h" +Log_SetChannel(WindowInfo); + +#if defined(_WIN32) + +#include "common/windows_headers.h" +#include <dwmapi.h> + +static bool GetRefreshRateFromDWM(HWND hwnd, float* refresh_rate) +{ + static HMODULE dwm_module = nullptr; + static HRESULT(STDAPICALLTYPE * is_composition_enabled)(BOOL * pfEnabled) = nullptr; + static HRESULT(STDAPICALLTYPE * get_timing_info)(HWND hwnd, DWM_TIMING_INFO * pTimingInfo) = nullptr; + static bool load_tried = false; + if (!load_tried) + { + load_tried = true; + dwm_module = LoadLibrary("dwmapi.dll"); + if (dwm_module) + { + std::atexit([]() { + FreeLibrary(dwm_module); + dwm_module = nullptr; + }); + is_composition_enabled = + reinterpret_cast<decltype(is_composition_enabled)>(GetProcAddress(dwm_module, "DwmIsCompositionEnabled")); + get_timing_info = + reinterpret_cast<decltype(get_timing_info)>(GetProcAddress(dwm_module, "DwmGetCompositionTimingInfo")); + } + } + + BOOL composition_enabled; + if (!is_composition_enabled || FAILED(is_composition_enabled(&composition_enabled) || !get_timing_info)) + return false; + + DWM_TIMING_INFO ti = {}; + ti.cbSize = sizeof(ti); + HRESULT hr = get_timing_info(nullptr, &ti); + if (SUCCEEDED(hr)) + { + if (ti.rateRefresh.uiNumerator == 0 || ti.rateRefresh.uiDenominator == 0) + return false; + + *refresh_rate = static_cast<float>(ti.rateRefresh.uiNumerator) / static_cast<float>(ti.rateRefresh.uiDenominator); + return true; + } + + return false; +} + +static bool GetRefreshRateFromMonitor(HWND hwnd, float* refresh_rate) +{ + HMONITOR mon = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST); + if (!mon) + return false; + + MONITORINFOEXW mi = {}; + mi.cbSize = sizeof(mi); + if (GetMonitorInfoW(mon, &mi)) + { + DEVMODEW dm = {}; + dm.dmSize = sizeof(dm); + + // 0/1 are reserved for "defaults". + if (EnumDisplaySettingsW(mi.szDevice, ENUM_CURRENT_SETTINGS, &dm) && dm.dmDisplayFrequency > 1) + { + *refresh_rate = static_cast<float>(dm.dmDisplayFrequency); + return true; + } + } + + return false; +} + +bool WindowInfo::QueryRefreshRateForWindow(const WindowInfo& wi, float* refresh_rate) +{ + if (wi.type != Type::Win32 || !wi.window_handle) + return false; + + // Try DWM first, then fall back to integer values. + const HWND hwnd = static_cast<HWND>(wi.window_handle); + return GetRefreshRateFromDWM(hwnd, refresh_rate) || GetRefreshRateFromMonitor(hwnd, refresh_rate); +} + +#else + +#ifdef USE_X11 + +#include "common/scoped_guard.h" +#include "gl/x11_window.h" +#include <X11/extensions/Xrandr.h> + +static bool GetRefreshRateFromXRandR(const WindowInfo& wi, float* refresh_rate) +{ + Display* display = static_cast<Display*>(wi.display_connection); + Window window = static_cast<Window>(reinterpret_cast<uintptr_t>(wi.window_handle)); + if (!display || !window) + return false; + + GL::X11InhibitErrors inhibiter; + + XRRScreenResources* res = XRRGetScreenResources(display, window); + if (!res) + { + Log_ErrorPrint("XRRGetScreenResources() failed"); + return false; + } + + ScopedGuard res_guard([res]() { XRRFreeScreenResources(res); }); + + int num_monitors; + XRRMonitorInfo* mi = XRRGetMonitors(display, window, True, &num_monitors); + if (num_monitors < 0) + { + Log_ErrorPrint("XRRGetMonitors() failed"); + return false; + } + else if (num_monitors > 1) + { + Log_WarningPrintf("XRRGetMonitors() returned %d monitors, using first", num_monitors); + } + + ScopedGuard mi_guard([mi]() { XRRFreeMonitors(mi); }); + if (mi->noutput <= 0) + { + Log_ErrorPrint("Monitor has no outputs"); + return false; + } + else if (mi->noutput > 1) + { + Log_WarningPrintf("Monitor has %d outputs, using first", mi->noutput); + } + + XRROutputInfo* oi = XRRGetOutputInfo(display, res, mi->outputs[0]); + if (!oi) + { + Log_ErrorPrint("XRRGetOutputInfo() failed"); + return false; + } + + ScopedGuard oi_guard([oi]() { XRRFreeOutputInfo(oi); }); + + XRRCrtcInfo* ci = XRRGetCrtcInfo(display, res, oi->crtc); + if (!ci) + { + Log_ErrorPrint("XRRGetCrtcInfo() failed"); + return false; + } + + ScopedGuard ci_guard([ci]() { XRRFreeCrtcInfo(ci); }); + + XRRModeInfo* mode = nullptr; + for (int i = 0; i < res->nmode; i++) + { + if (res->modes[i].id == ci->mode) + { + mode = &res->modes[i]; + break; + } + } + if (!mode) + { + Log_ErrorPrintf("Failed to look up mode %d (of %d)", static_cast<int>(ci->mode), res->nmode); + return false; + } + + if (mode->dotClock == 0 || mode->hTotal == 0 || mode->vTotal == 0) + { + Log_ErrorPrintf("Modeline is invalid: %ld/%d/%d", mode->dotClock, mode->hTotal, mode->vTotal); + return false; + } + + *refresh_rate = + static_cast<double>(mode->dotClock) / (static_cast<double>(mode->hTotal) * static_cast<double>(mode->vTotal)); + return true; +} + +#endif // USE_X11 + +bool WindowInfo::QueryRefreshRateForWindow(const WindowInfo& wi, float* refresh_rate) +{ +#if defined(USE_X11) + if (wi.type == WindowInfo::Type::X11) + return GetRefreshRateFromXRandR(wi, refresh_rate); +#endif + + return false; +} + +#endif
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