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Qt/macOS: enable HiDPI ( retina display ) support #12552

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merged 3 commits into from
Feb 4, 2020
Merged

Qt/macOS: enable HiDPI ( retina display ) support #12552

merged 3 commits into from
Feb 4, 2020

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CarterLi
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@CarterLi CarterLi commented Jan 5, 2020 •
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Tested on macOS 10.15.2

image
image

EDIT: now we can modify Info.plist automatically

CarterLi
CarterLi commented Jan 5, 2020
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Qt/mainwindow.cpp
emugl->resizeGL(emugl->size().width(), emugl->size().height());
// TODO: Won't showFullScreen do this for us?
setMaximumSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX);
setFixedSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX);
#endif
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It seems that resizing the main window will trigger resizeGL automatically. This code should be unnecessary on Windows too.

CarterLi
CarterLi commented Jan 5, 2020
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Qt/mainwindow.cpp
activateWindow();
}

void MainWindow::SetFullScreen(bool fullscreen) {
if (fullscreen) {
#if !PPSSPP_PLATFORM(MAC)
menuBar()->hide();
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Qt uses native menubar on macOS by default, which is hidden automatically on fullscreen.

CarterLi
CarterLi commented Jan 5, 2020
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Core/Core.cpp
g_dpi = (float)System_GetPropertyInt(SYSPROP_DISPLAY_DPI);
float g_logical_dpi = (float)System_GetPropertyInt(SYSPROP_DISPLAY_LOGICAL_DPI);
g_dpi_scale_x = g_logical_dpi / g_dpi;
g_dpi_scale_y = g_logical_dpi / g_dpi;
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I tries to get the native scale factor. This should work on Windows too ( untested )

unknownbrackets
unknownbrackets reviewed Jan 5, 2020
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Qt/QtMain.cpp Outdated Show resolved Hide resolved
@CarterLi CarterLi force-pushed the master branch 2 times, most recently from d2d6364 to d570049 Compare January 5, 2020 17:11
@LastChalice
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LastChalice commented Jan 18, 2020 •
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Just out of curiosity, how did u manage to get ppsspp 1.9.3 working on your mac?
The latest version I have access to is 1.6.3.
In addition, how well does 1.9.3 function compared to on windows, since macos has outdated OpenGl and as far as I know, mac has no Vulkan either.
Edit: Or did u use moltenVK to translate from Vulkan to Metal?

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Just out of curiosity, how did u manage to get ppsspp 1.9.3 working on your mac?
The latest version I have access to is 1.6.3.

I built it from source

In addition, how well does 1.9.3 function compared to on windows, since macos has outdated OpenGl and as far as I know, mac has no Vulkan either.
Edit: Or did u use moltenVK to translate from Vulkan to Metal?

Just use OpenGL

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CarterLi commented Jan 21, 2020 •
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I just dig HiDPI support for SDL2. For Vulkan, everything worked like a charm ( including dpi scale, surprisedly ). For OGL, images were displayed in the bottom-left quarter.

SDL2 supports HiDPI by specifying SDL_WINDOW_ALLOW_HIGHDPI flag when creating SDL window. After that we can get the correct drawable size using SDL_GL_GetDrawableSize. Just call it in the SDL event loop:

if (event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED) {
	int w = event.window.data1, h = event.window.data2;
	if (g_Config.iGPUBackend == (int)GPUBackend::OPENGL) {
		SDL_GL_GetDrawableSize(window, &w, &h);
	}
	UpdateScreenScale(w, h);
}

But it breaks mouse event. Need more hacking...

@Florin9doi
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Florin9doi commented Feb 2, 2020 •
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Modify Info.plist manually ( don't know how to do it automatically ):

QMAKE_POST_LINK += plutil -replace NSPrincipalClass -string \"NSApplication\" $${TARGET}.app/Contents/Info.plist;
QMAKE_POST_LINK += plutil -replace NSHighResolutionCapable -bool YES $${TARGET}.app/Contents/Info.plist;

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Is this build publicly available?
I'm a rookie to Github, so I'm not sure how this system works.

@CarterLi
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CarterLi commented Feb 4, 2020 •
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Modify Info.plist manually ( don't know how to do it automatically ):

QMAKE_POST_LINK += plutil -replace NSPrincipalClass -string \"NSApplication\" $${TARGET}.app/Contents/Info.plist;
QMAKE_POST_LINK += plutil -replace NSHighResolutionCapable -bool YES $${TARGET}.app/Contents/Info.plist;

But PPSSPP uses CMAKE_AUTOMOC, instead of qmake things

Added macbundle.sh to do it

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CarterLi commented Feb 4, 2020

Bundle @LastChalice : PPSSPPQt.zip

Install dependencies

$ brew install sdl2 qt

@hrydgard @unknownbrackets any chance to get reviewed?

@hrydgard
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hrydgard commented Feb 4, 2020 •
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Sorry, this fell between the cracks somehow. It looks good!

(I got the impression this wasn't finished because of the mouse issue above, but I assume it's fixed now since you're asking for review).

@hrydgard hrydgard merged commit dcc2682 into hrydgard:master Feb 4, 2020
@CarterLi
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CarterLi commented Feb 4, 2020

(I got the impression this wasn't finished because of the mouse issue above, but I assume it's fixed now since you're asking for review).

It related to the SDL version, which I didn't touch in this PR

@unknownbrackets unknownbrackets added this to the v1.10.0 milestone Mar 1, 2020
@iota97 iota97 mentioned this pull request Jun 14, 2020
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@unknownbrackets unknownbrackets Awaiting requested review from unknownbrackets

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@CarterLi @LastChalice @Florin9doi @hrydgard @unknownbrackets