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fix(gamescope): Set High DPI AFTER GameScope construction

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Signed-off-by: Collecting <collecting@noreply.localhost>
This commit is contained in:
Collecting
2026-01-04 20:40:02 +00:00
parent 868b26fc1f
commit 7b83a79d16
1 changed files with 24 additions and 22 deletions
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46
src/citron/main.cpp
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@@ -6155,7 +6155,30 @@ static void SetHighDPIAttributes() {
}
int main(int argc, char* argv[]) {
// Set environment variables for AppImage compatibility
// 1. Detect Gamescope/Steam Deck hardware
const bool is_gamescope = qgetenv("XDG_CURRENT_DESKTOP") == "gamescope" ||
!qgetenv("GAMESCOPE_WIDTH").isEmpty() ||
!qgetenv("STEAM_DECK").isEmpty();
if (is_gamescope) {
// Kill the SteamOS scaling requests before they can bloat the UI
QGuiApplication::setDesktopSettingsAware(false);
QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::Floor);
// Force 1:1 pixel ratio
qputenv("QT_ENABLE_HIGHDPI_SCALING", "0");
qputenv("QT_SCALE_FACTOR", "1");
qputenv("QT_SCREEN_SCALE_FACTORS", "1");
qputenv("QT_AUTO_SCREEN_SCALE_FACTOR", "0");
qputenv("QT_FONT_DPI", "96");
// Ensure Gamescope compositor handles Citron menus correctly
QCoreApplication::setAttribute(Qt::AA_DontUseNativeMenuBar);
QCoreApplication::setAttribute(Qt::AA_DontUseNativeDialogs);
qputenv("QT_WAYLAND_SHELL_INTEGRATION", "xdg-shell");
}
// 2. NOW setup AppImage environment
const bool is_appimage = !qgetenv("APPIMAGE").isEmpty();
if (is_appimage) {
qputenv("QT_WAYLAND_DISABLE_EXPLICIT_SYNC", "1");
@@ -6216,27 +6239,6 @@ int main(int argc, char* argv[]) {
QCoreApplication::setAttribute(Qt::AA_DontCheckOpenGLContextThreadAffinity);
// Gamescope/Steam Deck detection
const bool is_gamescope = qgetenv("XDG_CURRENT_DESKTOP") == "gamescope" ||
!qgetenv("GAMESCOPE_WIDTH").isEmpty() ||
!qgetenv("STEAM_DECK").isEmpty();
if (is_gamescope) {
// 1. Force the scale factor to exactly 1.0
qputenv("QT_SCALE_FACTOR", "1");
qputenv("QT_SCREEN_SCALE_FACTORS", "1");
qputenv("QT_AUTO_SCREEN_SCALE_FACTOR", "0");
qputenv("QT_FONT_DPI", "96");
// 2. This must be called BEFORE the QApplication object is created
QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::Floor);
// 3. Ensure windowing system plays nice with Gamescope
QCoreApplication::setAttribute(Qt::AA_DontUseNativeMenuBar);
QCoreApplication::setAttribute(Qt::AA_DontUseNativeDialogs);
qputenv("QT_WAYLAND_SHELL_INTEGRATION", "xdg-shell");
}
QApplication app(argc, argv);
#ifdef __linux__
if (QGuiApplication::platformName().startsWith(QStringLiteral("wayland"))) {