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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
+23
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@@ -400,6 +400,29 @@ SPDX-License-Identifier: GPL-2.0-or-later
</StackPanel>
</ScrollViewer>
</TabItem>
<TabItem x:Name="GraphicsTabItem" Header="Graphics" FontSize="15">
<ScrollViewer>
<StackPanel Margin="0,14,0,16" Spacing="16" MaxWidth="1280" HorizontalAlignment="Left">
<Border Classes="card">
<StackPanel Spacing="14">
<TextBlock x:Name="RenderingSectionTitle" Classes="sectionTitle" Text="RENDERING" />
<local:SettingRow x:Name="RenderResolutionRow" Label="Internal resolution"
Description="Render offscreen targets below native resolution and upscale on present. Lower values trade image quality for GPU headroom; takes effect on next launch.">
<ComboBox x:Name="RenderResolutionBox" Width="160" SelectedIndex="0"
VerticalAlignment="Center" CornerRadius="8">
<ComboBoxItem x:Name="RenderResolution100Item" Content="100% (native)" Tag="1.0" />
<ComboBoxItem x:Name="RenderResolution75Item" Content="75%" Tag="0.75" />
<ComboBoxItem x:Name="RenderResolution50Item" Content="50%" Tag="0.5" />
<ComboBoxItem x:Name="RenderResolution25Item" Content="25%" Tag="0.25" />
</ComboBox>
</local:SettingRow>
</StackPanel>
</Border>
</StackPanel>
</ScrollViewer>
</TabItem>
<TabItem x:Name="EnvTabItem" Header="Environment" FontSize="15">
<ScrollViewer>
<StackPanel Margin="0,14,0,16" Spacing="16" MaxWidth="1280" HorizontalAlignment="Left">