Bad HiDPI scaling on macOS client about moonlight-qt HOT 7 OPEN

Are you seeing bad scaling with both windowed and borderless windowed modes?

Yes it happens with both.

With further testing I think the problem happens only with non-integer scaling res on the client.

• 2880x1800 (native panel res) > pixel perfect
• 1680x1050 (default scaled res) > blurry
• 1440x900 (2x scaled res) > pixel perfect

Here are the screenshots.
Not sure it will be helpful because at scaled resolutions, macOS generates a screenshot that is 2x the size of the scaled res, so all the PNGs are not of the same size to compare.
But I can confirm it is very noticeable.
Notice that even the stats overlay seems to be of the same font size on native and 2x but of a different size at a the non-integer scaled res.

2880x1800native_non-scaled_borderless (pixel perfect) :

1680x1050default_scaled_borderless (blurry) :

1440x900_scaled_borderless (pixel perfect) :

Here are the logs with hardware decoding (black video stream) :
00:00:00 - SDL Info (0): Compiled with SDL 2.31.0 00:00:00 - SDL Info (0): Running with SDL 2.31.0 00:00:00 - Qt Info: Successfully loaded translation for "fr_FR" 00:00:01 - Qt Warning: Populating font family aliases took 300 ms. Replace uses of missing font family "Roboto" with one that exists to avoid this cost. 00:00:01 - Qt Warning: qrc:/gui/main.qml:13:1: QML ApplicationWindow: ToolTip must be attached to an Item 00:00:01 - Qt Info: Found "gamecontrollerdb.txt" at "/Users/zt/Library/Caches/Moonlight Game Streaming Project/Moonlight/gamecontrollerdb.txt" 00:00:01 - SDL Info (0): Loaded 132 new gamepad mappings 00:00:01 - SDL Info (0): V-sync disabled 00:00:01 - Qt Info: Found "vt_renderer.metal" at ":/data/vt_renderer.metal" 00:00:01 - SDL Info (0): Using VideoToolbox Metal renderer 00:00:01 - FFmpeg: [hevc @ 0x7fa883fcd5c0] nal_unit_type: 32(VPS), nuh_layer_id: 0, temporal_id: 0 00:00:01 - FFmpeg: [hevc @ 0x7fa883fcd5c0] nal_unit_type: 33(SPS), nuh_layer_id: 0, temporal_id: 0 00:00:01 - FFmpeg: [hevc @ 0x7fa883fcd5c0] nal_unit_type: 34(PPS), nuh_layer_id: 0, temporal_id: 0 00:00:01 - FFmpeg: [hevc @ 0x7fa883fcd5c0] nal_unit_type: 21(CRA_NUT), nuh_layer_id: 0, temporal_id: 0 00:00:01 - FFmpeg: [hevc @ 0x7fa883fcd5c0] nal_unit_type: 21(CRA_NUT), nuh_layer_id: 0, temporal_id: 0 00:00:01 - FFmpeg: [hevc @ 0x7fa883fcd5c0] nal_unit_type: 21(CRA_NUT), nuh_layer_id: 0, temporal_id: 0 00:00:01 - FFmpeg: [hevc @ 0x7fa883fcd5c0] nal_unit_type: 21(CRA_NUT), nuh_layer_id: 0, temporal_id: 0 00:00:01 - FFmpeg: [hevc @ 0x7fa883fcd5c0] Decoding VPS 00:00:01 - FFmpeg: [hevc @ 0x7fa883fcd5c0] Main 10 profile bitstream 00:00:01 - FFmpeg: [hevc @ 0x7fa883fcd5c0] Decoding SPS 00:00:01 - FFmpeg: [hevc @ 0x7fa883fcd5c0] Main 10 profile bitstream 00:00:01 - FFmpeg: [hevc @ 0x7fa883fcd5c0] Decoding VUI 00:00:01 - FFmpeg: [hevc @ 0x7fa883fcd5c0] Decoding PPS 00:00:01 - FFmpeg: [hevc @ 0x7fa883fcd5c0] Format videotoolbox_vld chosen by get_format(). 00:00:01 - FFmpeg: [hevc @ 0x7fa883fcd5c0] Format videotoolbox_vld requires hwaccel initialisation. 00:00:01 - FFmpeg: [hevc @ 0x7fa883fcd5c0] Output frame with POC 3. 00:00:01 - SDL Info (0): FFmpeg-based video decoder chosen 00:00:01 - Qt Info: Found "gamecontrollerdb.txt" at "/Users/zt/Library/Caches/Moonlight Game Streaming Project/Moonlight/gamecontrollerdb.txt" 00:00:01 - SDL Info (0): Loaded 132 new gamepad mappings 00:00:01 - Qt Debug: Current Moonlight version: "5.0.1" 00:00:01 - Qt Info: "PC-zt" is now online at "192.168.1.10:47989" 00:00:02 - Qt Info: Discovered mDNS host: "PC-zt.local." 00:00:02 - Qt Info: Resolved "PC-zt.local." to QHostAddress("192.168.1.10") 00:00:02 - Qt Info: Resolved "PC-zt.local." to QHostAddress(« ab12::3ab3:ebaf:456a:2fd5) 00:00:04 - Qt Info: Processing new PC at "192.168.1.10:47989" from mDNS with IPv6 address "<NULL>" 00:00:04 - Qt Info: Executing request: "http://192.168.1.10:47989/serverinfo?uniqueid=0123456789ABCDEF&uuid=6178d351f24b5730850ef57e7034fca5" 00:00:04 - Qt Info: Executing request: "https://192.168.1.10:47984/serverinfo?uniqueid=0123456789ABCDEF&uuid=1ceb159669074b64a6bf34402f41d57b" 00:00:04 - Qt Info: Gamepad mappings are up to date 00:00:04 - Qt Debug: Found update manifest match for current platform 00:00:04 - Qt Debug: Latest version of Moonlight for this platform is: "5.0.1" 00:00:04 - Qt Debug: Update manifest version equal to current version 00:00:04 - Qt Info: Latest supported GFE server: "99.99.99.99"

from moonlight-qt.

Please test with the latest nightly: https://ci.appveyor.com/project/cgutman/moonlight-qt/builds/49211978/job/2exqqybbsko35tww/artifacts

The macOS renderer has been rewritten since v5.0.1.

from moonlight-qt.

Please test with the latest nightly: https://ci.appveyor.com/project/cgutman/moonlight-qt/builds/49211978/job/2exqqybbsko35tww/artifacts

The macOS renderer has been rewritten since v5.0.1.

Hi, thanks, I just tested your build. Results are the exact same.

Note : I was only able to get a video stream with software decoding. With hardware decoding, the video stream opens but I get a black screen. The stats overlay does not show either. Sound seems to get through though.

from moonlight-qt.

Note : I was only able to get a video stream with software decoding. With hardware decoding, the video stream opens but I get a black screen. The stats overlay does not show either. Sound seems to get through though.

Ok, please post your Moonlight logs from the /tmp directory on your Mac with hardware decoding.

Please also post a screenshot of the improperly scaled output. FWIW, I'm seeing good scaling here when testing 1080p on host and Moonlight client on my M2 MacBook Pro. It looks pixel-perfect to my eye.

Are you seeing bad scaling with both windowed and borderless windowed modes?

from moonlight-qt.

seems normaly non-integer get blurry afaik ? then only bicubic/billinear filtering can somewhat help.

Thank god half res is pixel perfect (desktop windowed res) because macos fullscreen res it really high (2234p on m3 16")

with https://github.com/itsmikethetech/Virtual-Display-Driver it works well at least, as you can make the same res as your client

from moonlight-qt.

I wanted to try half res (LowDPI) but I couldn't because it's an odd number (half res is 1728x1117p, on 3456x2234p full res)

I was able to test LowDPI with a 16:9 aspect ratio (macbook are 16:10), so 1728x972p (full 16:9 res would be 3456x1944)
But it's really blurry, and text looks really bad (worse than in any screenshot)

AFAIK, Moonlight should do some "integer scaling"/nearest neighbor upscaling for this scenario (upscale lower res stream to the max monitor res) like most emulators do

all this on latest nightly in fullscreen mode (notch visible)

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#1242

Another issue for MacOS, wonder if it's fixed on the new UI...

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