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Merge pull request #272 from irihitech/drm

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Running on Raspberry Pi with Drm
This commit is contained in:
Dong Bin 2023-11-08 14:35:21 +08:00 committed by GitHub
commit 8059614a2e
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2 changed files with 57 additions and 42 deletions
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42
demo/Semi.Avalonia.Demo.Drm/Program.cs
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@ -1,48 +1,43 @@
using Avalonia;
using Avalonia.Dialogs;
using Avalonia.Media;
using System;
using System;
using System.Globalization;
using System.Linq;
using System.Threading;
using Avalonia;
namespace Semi.Avalonia.Demo.Drm
{
internal class Program
namespace Semi.Avalonia.Demo.Drm;
class Program
{
// Initialization code. Don't use any Avalonia, third-party APIs or any
// SynchronizationContext-reliant code before AppMain is called: things aren't initialized
// yet and stuff might break.
[STAThread]
public static void Main(string[] args)
public static int Main(string[] args)
{
var builder = BuildAvaloniaApp();
builder.With(new FontManagerOptions
double GetScaling()
{
FontFallbacks = new[]
{
new FontFallback
{
FontFamily = new FontFamily("Microsoft YaHei")
var idx = Array.IndexOf(args, "--scaling");
if (idx != 0 && args.Length > idx + 1 &&
double.TryParse(args[idx + 1], NumberStyles.Any, CultureInfo.InvariantCulture, out var scaling))
return scaling;
return 1;
}
}
});
if (args.Contains("--drm"))
{
SilenceConsole();
builder.StartLinuxDrm(args: args, card: "/dev/dri/card0", scaling: 1);
}
else
{
builder.StartWithClassicDesktopLifetime(args);
return builder.StartLinuxDrm(args: args, card: "/dev/dri/card1", scaling: GetScaling());
}
return builder.StartWithClassicDesktopLifetime(args);
}
// Avalonia configuration, don't remove; also used by visual designer.
public static AppBuilder BuildAvaloniaApp()
=> AppBuilder.Configure<App>()
.UseManagedSystemDialogs()
.UsePlatformDetect()
.With(new Win32PlatformOptions())
.LogToTrace();
private static void SilenceConsole()
@ -56,4 +51,3 @@ namespace Semi.Avalonia.Demo.Drm
{ IsBackground = true }.Start();
}
}
}

21
demo/Semi.Avalonia.Demo.Drm/使用方法.md
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@ -54,3 +54,24 @@ sudo kmscube
解决方法：
>sudo chmod +x ./Semi.Avalonia.Demo.Drm
4. 报错内容
>Unhandled exception. System.ComponentModel.Win32Exception (95): drmModeGetResources failed
at Avalonia.LinuxFramebuffer.Output.DrmResources..ctor(Int32 fd, Boolean connectorsForceProbe) in /_/src/Linux/Avalonia.LinuxFramebuffer/Output/DrmBindings.cs:line 91
at Avalonia.LinuxFramebuffer.Output.DrmCard.GetResources(Boolean connectorsForceProbe) in /_/src/Linux/Avalonia.LinuxFramebuffer/Output/DrmBindings.cs:line 171
at Avalonia.LinuxFramebuffer.Output.DrmOutput..ctor(String path, Boolean connectorsForceProbe, DrmOutputOptions options) in /_/src/Linux/Avalonia.LinuxFramebuffer/Output/DrmOutput.cs:line 60
at LinuxFramebufferPlatformExtensions.StartLinuxDrm(AppBuilder builder, String[] args, String card, Double scaling, IInputBackend inputBackend) in /_/src/Linux/Avalonia.LinuxFramebuffer/LinuxFramebufferPlatform.cs:line 166
at Semi.Avalonia.Demo.Drm.Program.Main(String[] args)
解决方法：
>`program.cs`的显卡路径错误，可能不是`dev/dri/card1`，看在`dev/dri`目录下有无其他的显卡如`card0`。
5. 报错内容
>Unhandled exception. System.ComponentModel.Win32Exception (2): Couldn't open /dev/dri/card1
at Avalonia.LinuxFramebuffer.Output.DrmCard..ctor(String ) in /_/src/Linux/Avalonia.LinuxFramebuffer/Output/DrmBindings.cs:line 167
at Avalonia.LinuxFramebuffer.Output.DrmOutput..ctor(String , Boolean , DrmOutputOptions ) in /_/src/Linux/Avalonia.LinuxFramebuffer/Output/DrmOutput.cs:line 58
at LinuxFramebufferPlatformExtensions.StartLinuxDrm(AppBuilder, String[], String , Double , IInputBackend ) in /_/src/Linux/Avalonia.LinuxFramebuffer/LinuxFramebufferPlatform.cs:line 166
at Semi.Avalonia.Demo.Drm.Program.Main(String[])
解决办法：
>找不到显卡路径`dev/dri/card1`，可能是显卡挂载到别的文件夹下了，待解决。