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Add internal render resolution scale and fix DPI Issue (#468)

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* Add internal render resolution scale and fix embedded surface DPI scaling

Adds a GUI-configurable internal resolution scale (Graphics tab) that
renders offscreen color/depth targets below native guest resolution
and upscales on present, trading image quality for GPU headroom.
Storage/UAV images and sampled asset textures are left untouched, and
texture-alias/feedback-loop lookups compare against each target's
logical (unscaled) size so scaled render targets are still found
correctly when sampled back.

Also fixes the embedded game surface not filling the window: the
isolated emulator child process had no declared DPI awareness, so
Windows silently downscaled every window-geometry query it made
against the GUI-owned surface HWND by the display's DPI factor,
leaving an unfilled black margin on scaled displays.

* Remove flaky Gen5ScalarMemoryFallbackTests

* Restore Gen5ScalarMemoryFallbackTests

---------

Co-authored-by: Spooks4576 <Spooks4576@users.noreply.github.com>
This commit is contained in:
Spooks
2026-07-20 05:37:20 -06:00
committed by GitHub
parent 8cd46243ab
commit db9b20481c
6 changed files with 159 additions and 26 deletions
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src/SharpEmu.GUI/MainWindow.axaml.cs
+38 -2
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@@ -192,6 +192,18 @@ public partial class MainWindow : Window
// it is open already uses the new values.
LogLevelBox.SelectionChanged += (_, _) => _settings.LogLevel = SelectedLogLevel();
TraceImportsBox.ValueChanged += (_, _) => _settings.ImportTraceLimit = (int)(TraceImportsBox.Value ?? 0);
RenderResolutionBox.SelectionChanged += (_, _) =>
{
if (RenderResolutionBox.SelectedItem is ComboBoxItem { Tag: string tag } &&
double.TryParse(
tag,
System.Globalization.NumberStyles.Float,
System.Globalization.CultureInfo.InvariantCulture,
out var scale))
{
_settings.RenderResolutionScale = scale;
}
};
StrictToggle.IsCheckedChanged += (_, _) => _settings.StrictDynlibResolution = StrictToggle.IsChecked == true;
LogToFileToggle.IsCheckedChanged += (_, _) => _settings.LogToFile = LogToFileToggle.IsChecked == true;
OverrideLogFileToggle.IsCheckedChanged += (_, _) =>
@@ -869,6 +881,13 @@ public partial class MainWindow : Window
_ => 2,
};
TraceImportsBox.Value = Math.Clamp(_settings.ImportTraceLimit, 0, 4096);
RenderResolutionBox.SelectedIndex = _settings.RenderResolutionScale switch
{
>= 0.875 => 0,
>= 0.625 => 1,
>= 0.375 => 2,
_ => 3,
};
StrictToggle.IsChecked = _settings.StrictDynlibResolution;
LogToFileToggle.IsChecked = _settings.LogToFile;
OverrideLogFileToggle.IsChecked = _settings.OverrideLogFile;
@@ -1788,6 +1807,12 @@ public partial class MainWindow : Window
_appliedEnvironmentVariables.Add(name);
}
Environment.SetEnvironmentVariable(
"SHARPEMU_RENDER_SCALE",
_settings.RenderResolutionScale.ToString(
"0.###",
System.Globalization.CultureInfo.InvariantCulture));
if (SharpEmuLog.TryParseLevel(effective.LogLevel, out var logLevel))
{
SharpEmuLog.MinimumLevel = logLevel;
@@ -2030,8 +2055,6 @@ public partial class MainWindow : Window
RestoreGameViewToFull();
GameView.Background = Brushes.Black;
GameView.IsHitTestVisible = true;
_gameSurfaceHost?.SetPresentationVisible(true);
_gameSurfaceHost?.SetCursorAutoHide(true);
LibraryPage.IsVisible = false;
OptionsPage.IsVisible = false;
LibraryToolbar.IsVisible = false;
@@ -2040,6 +2063,19 @@ public partial class MainWindow : Window
LaunchBar.IsVisible = false;
HideSessionLoading();
UpdateSessionBarVisibility();
// Defer so the layout pass from the margin change above settles first.
Dispatcher.UIThread.Post(() =>
{
if (!_isRunning || _isStopping)
{
return;
}
_gameSurfaceHost?.RefreshSurfaceSize();
_gameSurfaceHost?.SetPresentationVisible(true);
_gameSurfaceHost?.SetCursorAutoHide(true);
});
}
});
}