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display_issues [2020/09/13 19:18] – lbrpdx | display_issues [2021/01/08 01:39] – lbrpdx | ||
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- | ===== Emulation with 4K and ultrawide monitors ===== | + | ===== Emulation with 4K and ultrawide monitors, or problems when your screen is not fully displayed |
Older 8-bit and 16bit systems, or arcade systems from the 80s and 90s were using 4:3 CRT screens. Modern displays are now 16:9 or wider, and can go up to 4K, i.e. 2160 pixels high (compared to 480 or 546 at the time!). | Older 8-bit and 16bit systems, or arcade systems from the 80s and 90s were using 4:3 CRT screens. Modern displays are now 16:9 or wider, and can go up to 4K, i.e. 2160 pixels high (compared to 480 or 546 at the time!). | ||
- | Having so many pixels to render on the screen is impactful on the system performance. When you have a 4K screen or an ultra-wide screen, Batocera will limit the resolution by default to HD 1920x1080. It's more than enough to render emulators, even the most recent one. However, when you have an ultra-wide monitor, display is stretched. However, you can tweak your system with '' | + | Having so many pixels to render on the screen is impactful on the system performance. When you have a 4K screen or an ultra-wide screen, Batocera will limit the resolution by default to HD 1920x1080. It's more than enough to render emulators, even the most recent one. However, when you have an ultra-wide monitor, display is stretched. |
- | 1. Know what are the resolutions available on your system | + | For 4K monitors, because the resolution is by default resized to 1920x1080, you might see a screen that looks like this one - actually it's what 1920x1080 is, centered in a 3840x2160 screen: |
+ | |||
+ | {{ : | ||
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+ | In order to cover the whole screen, the best solution is to set the **VIDEO MODE** to 1920x1080 -- you can do that on a system-by-system basis in the **PER SYSTEM ADVANCED CONFIGURATION** screen. | ||
+ | |||
+ | Another use case is when you have a 1280x720 TV, for example, and you want to use bezels that are designed for 1920x1080. Batocera 5.27 can automatically resize the bezels, but sometimes you need to force the **VIDEO MODE** to take your 1280x720 resolution. | ||
+ | |||
+ | If you absolutely want to use the 4K resolution for whatever reason (shaders looking better, you have a non-standard wide format on your TV/ | ||
+ | |||
+ | ==== When EmulationStation feels sluggish on a 4K TV==== | ||
+ | |||
+ | There are some SBC + TV combinations where EmulationStation feels sluggish (default theme seems to be lagging behind, with a refresh rate like 10 FPS). It's really depending on your own configuration, | ||
+ | |||
+ | To force 1080 in those cases, edit '' | ||
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+ | system.es.maxresolution=1920x1080 | ||
+ | |||
+ | This shouldn' | ||
+ | |||
+ | ===== How does that work under the hood? ===== | ||
+ | |||
+ | You can do it though ES as shown above, but you can also tweak your system with '' | ||
+ | |||
+ | 1. Know what are the resolutions available on your system | ||
# batocera-resolution listModes | # batocera-resolution listModes | ||
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- | 2. Then, if I want to force for example | + | 2. Then, choose the mode from the list that is the one you want to force to RetroArch. For example, if I want to force '' |
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- | Emulators will then all select mode 1 = 2560x1080 as their screen resolution. If I want to select a specific resolution only for a specific emulator, I can do that with for instance '' | + | Emulators will then all select mode 1 = 2560x1080 |
- | Batocera 5.27 and later will automatically resize 1920x1080 bezels to ultrawide by adding black borders on the sides. | + | Batocera 5.27 and later will automatically resize 1920x1080 bezels to ultrawide by adding black borders on the sides. It will also resize full HD 1080 bezels to HD-ready 720p. |
- | 3. EmulationStation ignores this parameter. If you want to put ES in a specific resolution, you need to edit ''/ | + | 3. EmulationStation ignores this parameter. If you want to put ES in a specific resolution, you need to edit ''/ |
- | | + | cd /userdata # es need a PWD |
+ | | ||
+ | HOME=/ | ||
Don't forget to '' | Don't forget to '' | ||
+ | 4. If you ask for a 4K 3840x2160 resolution, but with a bezel that is HD 1920x1080, by default Batocera will add black borders around the bezel, like on the picture above. If you want your display to be full screen, you can either: | ||
+ | |||
+ | - switch to a lower resolution (like 1920x1080) | ||
+ | - add a line '' | ||
===== Display issues, when xrandr is your friend ===== | ===== Display issues, when xrandr is your friend ===== |
- display_issues.txt
- Last modified: 5 weeks ago
- by lbrpdx