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main: Use passthrough scaling for non-windows OSes 

They should be better than windows when handling fractional scaling ratios.
This commit is contained in:
Morph 2023-01-25 21:16:04 -05:00
parent 6a1b089a50
commit 5be85c556e
1 changed files with 12 additions and 3 deletions
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15
src/yuzu/main.cpp
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@ -4401,6 +4401,10 @@ void GMainWindow::changeEvent(QEvent* event) {
#endif
static void SetHighDPIAttributes() {
#ifdef _WIN32
// For Windows, we want to avoid scaling artifacts on fractional scaling ratios.
// This is done by setting the optimal scaling policy for the primary screen.
// Create a temporary QApplication.
int temp_argc = 0;
char** temp_argv = nullptr;
@ -4428,9 +4432,6 @@ static void SetHighDPIAttributes() {
// Get the lower of the 2 ratios and truncate, this is the maximum integer scale.
const float max_ratio = std::trunc(std::min(width_ratio, height_ratio));
QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
QApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
if (max_ratio > real_ratio) {
QApplication::setHighDpiScaleFactorRoundingPolicy(
Qt::HighDpiScaleFactorRoundingPolicy::Round);
@ -4438,6 +4439,14 @@ static void SetHighDPIAttributes() {
QApplication::setHighDpiScaleFactorRoundingPolicy(
Qt::HighDpiScaleFactorRoundingPolicy::Floor);
}
#else
// Other OSes should be better than Windows at fractional scaling.
QApplication::setHighDpiScaleFactorRoundingPolicy(
Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
#endif
QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
QApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
}
int main(int argc, char* argv[]) {