refactor: move ui core

move ui core classes into separate project refactor CameraView
2026-02-04 15:10:48 +03:00
parent d475b05a96
commit 5a728dbdd9
16 changed files with 749 additions and 417 deletions
@@ -1,3 +1,5 @@
+using GSS2.UI.Core.Views;
+using GSS2.UI.Core.ViewModels;
 using GSS2.Test.Views;
 using GSS2.Test.ViewModels;

@@ -1,7 +1,7 @@
 using Avalonia.Controls;
 using Avalonia.Controls.Templates;

-using GSS2.Test.ViewModels;
+using GSS2.UI.Core.ViewModels;

 namespace GSS2.Test;

@@ -12,7 +12,7 @@ public class DependencyInjectionViewLocator : IDataTemplate
        if (data is null)
            return null;

-        var name = data.GetType().FullName?
+        var name = data.GetType().AssemblyQualifiedName?
            .Replace("ViewModels", "Views")
            .Replace("ViewModel", "View");
        if (name is null)
@@ -8,7 +8,6 @@
    <UserSecretsId>dotnet-GSS2.Test-191ece0a-855d-46ec-9ecb-44378fc3db83</UserSecretsId>
    <ApplicationManifest>app.manifest</ApplicationManifest>
    <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
-    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
  </PropertyGroup>

  <ItemGroup>
@@ -20,20 +19,15 @@
    <PackageReference Include="Avalonia.Desktop" Version="11.3.11" />
    <PackageReference Include="Avalonia.Themes.Fluent" Version="11.3.11" />
    <PackageReference Include="Avalonia.Fonts.Inter" Version="11.3.11" />
-    <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
    <PackageReference Include="Avalonia.Diagnostics" Version="11.3.11">
      <IncludeAssets Condition="'$(Configuration)' != 'Debug'">None</IncludeAssets>
      <PrivateAssets Condition="'$(Configuration)' != 'Debug'">All</PrivateAssets>
    </PackageReference>
    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.2.1" />
-    <PackageReference Include="Silk.NET.Direct3D11" Version="2.22.0" />
-    <PackageReference Include="Silk.NET.Direct3D.Compilers" Version="2.22.0" />
-    <PackageReference Include="Silk.NET.Vulkan" Version="2.22.0" />
-    <PackageReference Include="Silk.NET.Vulkan.Extensions.EXT" Version="2.22.0" />
-    <PackageReference Include="Silk.NET.Vulkan.Extensions.KHR" Version="2.22.0" />
  </ItemGroup>

  <ItemGroup>
    <ProjectReference Include="..\GSS2.Core\GSS2.Core.csproj" />
+    <ProjectReference Include="..\GSS2.UI.Core\GSS2.UI.Core.csproj" />
  </ItemGroup>
 </Project>
@@ -1,23 +0,0 @@
-using GSS2.Core.Hardware;
-
-using LibCameraSharp;
-
-namespace GSS2.Test.ViewModels;
-
-public class CameraViewModel : ViewModelBase
-{
-    private readonly CameraService _cameraService;
-    private readonly ILogger<CameraViewModel> _logger;
-
-    public CameraViewModel(CameraService cameraService, ILogger<CameraViewModel> logger)
-    {
-        _cameraService = cameraService;
-        _logger = logger;
-        _logger.LogInformation("{} initialized", nameof(CameraViewModel));
-    }
-
-    public void StartViewFinder() => _cameraService.StartViewFinder();
-    public void StopViewFinder() => _cameraService.StopViewFinder();
-    public (FrameBuffer, StreamConfiguration)? GrabViewFinderFrame() => _cameraService.GrabViewFinderFrame();
-    public void ReturnViewFinderFrame(FrameBuffer frameBuffer) => _cameraService.ReturnViewFinderFrame(frameBuffer);
-}
@@ -1,5 +1,7 @@
 using CommunityToolkit.Mvvm.ComponentModel;

+using GSS2.UI.Core.ViewModels;
+
 namespace GSS2.Test.ViewModels;

 public partial class MainViewModel : ViewModelBase
@@ -1,5 +1,7 @@
 using CommunityToolkit.Mvvm.ComponentModel;

+using GSS2.UI.Core.ViewModels;
+
 namespace GSS2.Test.ViewModels;

 public partial class MainWindowViewModel : ViewModelBase
@@ -4,15 +4,15 @@ using CommunityToolkit.Mvvm.ComponentModel;

 using Avalonia.Threading;

+using SkiaSharp;
+
 using LiveChartsCore;
 using LiveChartsCore.SkiaSharpView;
 using LiveChartsCore.SkiaSharpView.Painting;
-
-using SkiaSharp;
+using LiveChartsCore.Defaults;

 using GSS2.Core.Hardware;
-using LiveChartsCore.SkiaSharpView.Avalonia;
-using LiveChartsCore.Defaults;
+using GSS2.UI.Core.ViewModels;

 namespace GSS2.Test.ViewModels;

@@ -1,372 +0,0 @@
-using System.Runtime.InteropServices;
-using Avalonia;
-using Avalonia.LogicalTree;
-using Avalonia.Media;
-using Avalonia.OpenGL.Egl;
-using Avalonia.OpenGL.Controls;
-using Avalonia.OpenGL;
-using Avalonia.Threading;
-using GSS2.Test.ViewModels;
-
-namespace GSS2.Test.Views;
-
-public unsafe partial class CameraView : OpenGlControlBase
-{
-    private readonly ILogger<CameraView> _logger;
-    private bool _isEglInitialized = false;
-    private IntPtr? _eglDisplay = null;
-    private int? _texture = null;
-    private int? _program = null;
-    private int? _uTexLocation = null;
-    private int? _vao = null;
-    private int? _vbo = null;
-    private eglCreateImageKHR_t? _eglCreateImageKHR = null;
-    private eglDestroyImageKHR_t? _eglDestroyImageKHR = null;
-    private glEGLImageTargetTexture2DOES_t? _glEGLImageTargetTexture2DOES = null;
-    private System.Timers.Timer? _renderTimer = null;
-
-    public CameraView(ILogger<CameraView> logger)
-    {
-        _logger = logger;
-        _logger.LogInformation("{} initialized", nameof(CameraView));
-    }
-
-    protected override void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs e)
-    {
-        (DataContext as CameraViewModel)?.StartViewFinder();
-        base.OnAttachedToVisualTree(e);
-        _renderTimer = new System.Timers.Timer(33)
-        {
-            AutoReset = true
-        };
-        _renderTimer.Elapsed += OnRendering;
-        _renderTimer.Start();
-    }
-    protected override void OnDetachedFromLogicalTree(LogicalTreeAttachmentEventArgs e)
-    {
-        (DataContext as CameraViewModel)?.StopViewFinder();
-        base.OnDetachedFromLogicalTree(e);
-    }
-
-    private void OnRendering(object? sender, EventArgs e)
-    {
-        Dispatcher.UIThread.Invoke(() =>
-        {
-            RequestNextFrameRendering();
-        });
-    }
-
-    [DllImport("libEGL.so.1")] private static extern IntPtr eglQueryString(IntPtr dpy, int name);
-    [DllImport("libEGL.so.1")] private static extern IntPtr eglGetCurrentDisplay();
-    [DllImport("libEGL.so.1")] static extern IntPtr eglGetProcAddress(string procname);
-    [DllImport("libGL.so.1")] static extern void glUniform1i(int location, int falue);
-
-    delegate IntPtr glEGLImageTargetTexture2DOES_t(int target, IntPtr image);
-    delegate IntPtr eglCreateImageKHR_t(IntPtr dpy, IntPtr ctx, int target, IntPtr buffer, int[] attribs);
-    delegate bool eglDestroyImageKHR_t(IntPtr dpy, IntPtr image);
-
-    private const uint DRM_FORMAT_BGRX8888 = 0x34325258; // XR24 XRGB8888
-    private const int EGL_LINUX_DMA_BUF_EXT = 0x3270;
-    private const int EGL_DMA_BUF_PLANE0_FD_EXT = 0x3272;
-    private const int EGL_DMA_BUF_PLANE0_OFFSET_EXT = 0x3273;
-    private const int EGL_DMA_BUF_PLANE0_PITCH_EXT = 0x3274;
-    private const int EGL_LINUX_DRM_FOURCC_EXT = 0x3271;
-    private const int GL_CLAMP_TO_EDGE = 0x812F;
-    private const int GL_TEXTURE_WRAP_S = 0x2802;
-    private const int GL_TEXTURE_WRAP_T = 0x2803;
-    private const int GL_TRIANGLE_STRIP = 0x0005;
-
-    private const string VertexShader = @"
-        #version 300 es
-        layout (location = 0) in vec2 aPos;
-        layout (location = 1) in vec2 aUv;
-
-        out vec2 vUv;
-
-        void main()
-        {
-            vUv = aUv;
-            gl_Position = vec4(aPos, 0.0, 1.0);
-        }    
-    ";
-    private const string FragmentShader = @"
-        #version 300 es
-        precision mediump float;
-
-        in vec2 vUv;
-        uniform sampler2D uTex;
-
-        out vec4 fragColor;
-
-        void main()
-        {
-            fragColor = texture(uTex, vUv);
-        }  
-    ";
-    private readonly float[] Vertices =
-    [
-        -1f, -1f,   0f, 1f,
-        1f, -1f,   1f, 1f,
-        -1f,  1f,   0f, 0f,
-        1f,  1f,   1f, 0f,
-    ];
-
-    protected override void OnOpenGlInit(GlInterface gl)
-    {
-        _logger.LogInformation("OpenGL initialized");
-        _logger.LogInformation("GL version: {}", gl.GetString(GlConsts.GL_VERSION));
-        _logger.LogInformation("GL vendor: {}", gl.GetString(GlConsts.GL_VENDOR));
-        _logger.LogInformation("GL renderer: {}", gl.GetString(GlConsts.GL_RENDERER));
-
-        var glExtensions = gl.GetString(GlConsts.GL_EXTENSIONS);
-        if (glExtensions is null)
-        {
-            _logger.LogCritical("Cannot use EGL, GL extentions query returned nullptr");
-            base.OnOpenGlInit(gl);
-            return;
-        }
-        _logger.LogInformation("GL extentions: [\n\t{}\n]", glExtensions.Trim().Replace(" ", "\n\t"));
-        if (!glExtensions.Contains("GL_OES_EGL_image"))
-        {
-            _logger.LogWarning("Required GL extention \"GL_OES_EGL_image\" not found");
-            if (!glExtensions.Contains("GL_OES_EGL_image_external"))
-            {
-                _logger.LogCritical("Required GL extention \"GL_OES_EGL_image_external\" also not found");
-                base.OnOpenGlInit(gl);
-                return;
-            }
-        }
-
-        _eglDisplay = eglGetCurrentDisplay();
-        if (_eglDisplay == IntPtr.Zero)
-        {
-            _logger.LogCritical("Cannot use EGL, current EGL display is nullptr");
-            base.OnOpenGlInit(gl);
-            return;
-        }
-        _logger.LogInformation("EGL display: 0x{:X}", _eglDisplay);
-
-        var eglExtensions = Marshal.PtrToStringAnsi(eglQueryString(_eglDisplay.Value, EglConsts.EGL_EXTENSIONS));
-        if (eglExtensions is null)
-        {
-            _logger.LogCritical("Cannot use EGL, EGL extentions query returned nullptr");
-            base.OnOpenGlInit(gl);
-            return;
-        }
-        _logger.LogInformation("EGL extensions: [\n\t{}\n]", eglExtensions.Trim().Replace(" ", "\n\t"));
-
-        if (!eglExtensions.Contains("EGL_EXT_image_dma_buf_import"))
-        {
-            _logger.LogCritical("Cannot use EGL, required EGL extention \"EGL_EXT_image_dma_buf_import\" not found");
-            base.OnOpenGlInit(gl);
-            return;
-        }
-
-        var pEglCreateImageKHR = eglGetProcAddress("eglCreateImageKHR");
-        if (pEglCreateImageKHR == IntPtr.Zero)
-        {
-            _logger.LogCritical("Cannot use EGL, required EGL method \"eglCreateImageKHR\" not found");
-            base.OnOpenGlInit(gl);
-            return;
-        }
-        _eglCreateImageKHR = Marshal.GetDelegateForFunctionPointer<eglCreateImageKHR_t>(pEglCreateImageKHR);
-
-        var pEglDestroyImageKHR = eglGetProcAddress("eglDestroyImageKHR");
-        if (pEglDestroyImageKHR == IntPtr.Zero)
-        {
-            _logger.LogCritical("Cannot use EGL, required EGL method \"eglDestroyImageKHR\" not found");
-            base.OnOpenGlInit(gl);
-            return;
-        }
-        _eglDestroyImageKHR = Marshal.GetDelegateForFunctionPointer<eglDestroyImageKHR_t>(pEglDestroyImageKHR);
-
-        var pGlEGLImageTargetTexture2DOES = eglGetProcAddress("glEGLImageTargetTexture2DOES");
-        if (pGlEGLImageTargetTexture2DOES == IntPtr.Zero)
-        {
-            _logger.LogCritical("Cannot use EGL, required EGL method \"glEGLImageTargetTexture2DOES\" not found");
-            base.OnOpenGlInit(gl);
-            return;
-        }
-        _glEGLImageTargetTexture2DOES = Marshal.GetDelegateForFunctionPointer<glEGLImageTargetTexture2DOES_t>(pGlEGLImageTargetTexture2DOES);
-
-        _texture = gl.GenTexture();
-        gl.BindTexture(GlConsts.GL_TEXTURE_2D, _texture.Value);
-        gl.TexParameteri(GlConsts.GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-        gl.TexParameteri(GlConsts.GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-
-        gl.TexParameteri(GlConsts.GL_TEXTURE_2D, GlConsts.GL_TEXTURE_MIN_FILTER, GlConsts.GL_LINEAR);
-        gl.TexParameteri(GlConsts.GL_TEXTURE_2D, GlConsts.GL_TEXTURE_MAG_FILTER, GlConsts.GL_LINEAR);
-
-        int vs = gl.CreateShader(GlConsts.GL_VERTEX_SHADER);
-        gl.ShaderSourceString(vs, VertexShader);
-        gl.CompileShader(vs);
-
-        int fs = gl.CreateShader(GlConsts.GL_FRAGMENT_SHADER);
-        gl.ShaderSourceString(fs, FragmentShader);
-        gl.CompileShader(fs);
-
-        _program = gl.CreateProgram();
-        gl.AttachShader(_program.Value, vs);
-        gl.AttachShader(_program.Value, fs);
-        gl.LinkProgram(_program.Value);
-
-        gl.DeleteShader(vs);
-        gl.DeleteShader(fs);
-
-        _uTexLocation = gl.GetUniformLocationString(_program.Value, "uTex");
-
-        _vao = gl.GenVertexArray();
-        _vbo = gl.GenBuffer();
-
-        gl.BindVertexArray(_vao.Value);
-
-        gl.BindBuffer(GlConsts.GL_ARRAY_BUFFER, _vbo.Value);
-        fixed (float* pVertices = Vertices)
-            gl.BufferData(GlConsts.GL_ARRAY_BUFFER, Vertices.Length * sizeof(float), new IntPtr(pVertices), GlConsts.GL_STATIC_DRAW);
-
-        // position
-        gl.EnableVertexAttribArray(0);
-        gl.VertexAttribPointer(0, 2, GlConsts.GL_FLOAT, 0, 4 * sizeof(float), IntPtr.Zero);
-
-        // uv
-        gl.EnableVertexAttribArray(1);
-        gl.VertexAttribPointer(1, 2, GlConsts.GL_FLOAT, 0, 4 * sizeof(float), 2 * sizeof(float));
-
-        gl.BindVertexArray(0);
-
-        _isEglInitialized = true;
-
-    }
-
-    protected override void OnOpenGlRender(GlInterface gl, int fb)
-    {
-        if (!_isEglInitialized ||
-            _eglDisplay is null ||
-            _eglDisplay.Value == IntPtr.Zero ||
-            _texture is null ||
-            _program is null ||
-            _uTexLocation is null ||
-            _vao is null ||
-            _vbo is null)
-        {
-            _logger.LogError("OpenGL render called with uninitialized EGL");
-            return;
-        }
-        try
-        {
-            (LibCameraSharp.FrameBuffer, LibCameraSharp.StreamConfiguration)? frame = null;
-            do
-            {
-                frame = (DataContext as CameraViewModel)?.GrabViewFinderFrame();
-            } while (frame is null);
-            if (frame is null)
-                return;
-            var (frameBuffer, streamConfiguration) = frame.Value;
-
-            // 0. Проверка что полученый фрейм ожидаемый праильный формат
-            var width = streamConfiguration.Size.Width;
-            if (width <= 0)
-            {
-                _logger.LogError("Cannot render frame, stream configuration vaildation error, expected frame width >= 0, got {}", streamConfiguration.Size.Width);
-                (DataContext as CameraViewModel)?.ReturnViewFinderFrame(frameBuffer);
-                return;
-            }
-            var height = streamConfiguration.Size.Height;
-            if (height <= 0)
-            {
-                _logger.LogError("Cannot render frame, stream configuration vaildation error, expected frame height >= 0, got {}", streamConfiguration.Size.Height);
-                (DataContext as CameraViewModel)?.ReturnViewFinderFrame(frameBuffer);
-                return;
-            }
-            if (streamConfiguration.PixelFormat.Fourcc != DRM_FORMAT_BGRX8888)
-            {
-                _logger.LogError("Cannot render frame, stream configuration vaildation error, expected forcc: 0x{:X}, got 0x{:X}", DRM_FORMAT_BGRX8888, streamConfiguration.PixelFormat.Fourcc);
-                (DataContext as CameraViewModel)?.ReturnViewFinderFrame(frameBuffer);
-                return;
-            }
-            if (streamConfiguration.PixelFormat.Modifier != 0)
-            {
-                _logger.LogError("Cannot render frame, stream configuration vaildation error, expected DRM modifier: 0x{:X}, got 0x{:X}", 0, streamConfiguration.PixelFormat.Modifier);
-                (DataContext as CameraViewModel)?.ReturnViewFinderFrame(frameBuffer);
-                return;
-            }
-            if (frameBuffer.Planes.Count() != 1)
-            {
-                _logger.LogError("Cannot render frame, planes vaildation error, expected planes count: 0, got {}", frameBuffer.Planes.Count());
-                (DataContext as CameraViewModel)?.ReturnViewFinderFrame(frameBuffer);
-                return;
-            }
-            var plane = frameBuffer.Planes.First();
-            if (plane.Length != width * height * 4)
-            {
-                _logger.LogError("Cannot render frame, plane validation error, expected plane size 0x{:X}, got 0x{:X}", width * height * 4, plane.Length);
-                (DataContext as CameraViewModel)?.ReturnViewFinderFrame(frameBuffer);
-                return;
-            }
-            var fd = plane.Fd.Get();
-            if (fd <= 0)
-            {
-                _logger.LogError("Cannot render frame, FD vaildation error, FD >= 0, got 0x{:X}", fd);
-                (DataContext as CameraViewModel)?.ReturnViewFinderFrame(frameBuffer);
-                return;
-            }
-
-            // 1. Очистка экрана
-            gl.Viewport(0, 0, (int)Bounds.Width, (int)Bounds.Height);
-            gl.ClearColor(
-                Colors.CornflowerBlue.R / 255f,
-                Colors.CornflowerBlue.G / 255f,
-                Colors.CornflowerBlue.B / 255f,
-                Colors.CornflowerBlue.A / 255f
-            );
-            gl.Clear(GlConsts.GL_COLOR_BUFFER_BIT);
-
-            // 2. Создание EGLImage из dma-buf
-            var eglImage = CreateEglImageFromDmabuf(_eglDisplay.Value, fd, (int)width, (int)height, (int)(width * 4));
-
-            // 3. Биндинг текстуры
-            gl.ActiveTexture(GlConsts.GL_TEXTURE0);
-            gl.BindTexture(GlConsts.GL_TEXTURE_2D, _texture.Value);
-
-            // 4. Привязка EGLImage к текстуре
-            _glEGLImageTargetTexture2DOES!(GlConsts.GL_TEXTURE_2D, eglImage);
-
-            // 5. Запуск шейдера
-            gl.UseProgram(_program.Value);
-            glUniform1i(_uTexLocation.Value, 0);
-
-            // 6. Отрисовка
-            gl.BindVertexArray(_vao.Value);
-            gl.DrawArrays(GL_TRIANGLE_STRIP, 0, 4);
-
-            // 7. Уничтожение EGLImage
-            _eglDestroyImageKHR!(_eglDisplay.Value, eglImage);
-
-            (DataContext as CameraViewModel)?.ReturnViewFinderFrame(frameBuffer);
-        }
-        catch (Exception ex)
-        {
-            _logger.LogError(ex, "Exception whiel OpenGL render");
-        }
-    }
-    private IntPtr CreateEglImageFromDmabuf(IntPtr eglDisplay, int fd, int width, int height, int stride)
-    {
-        var attribs = new[]
-        {
-            EglConsts.EGL_WIDTH, width,
-            EglConsts.EGL_HEIGHT, height,
-            EGL_LINUX_DRM_FOURCC_EXT, unchecked((int)DRM_FORMAT_BGRX8888),
-            EGL_DMA_BUF_PLANE0_FD_EXT, fd,
-            EGL_DMA_BUF_PLANE0_OFFSET_EXT, 0,
-            EGL_DMA_BUF_PLANE0_PITCH_EXT, stride,
-            EglConsts.EGL_NONE
-        };
-
-        var image = _eglCreateImageKHR?.Invoke(eglDisplay, IntPtr.Zero, EGL_LINUX_DMA_BUF_EXT, IntPtr.Zero, attribs);
-
-        if (image is null || image == IntPtr.Zero)
-            throw new Exception("eglCreateImageKHR failed");
-
-        return image.Value;
-    }
-}
@@ -1,9 +1,9 @@
 <UserControl xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-             xmlns:vm="using:GSS2.Test.ViewModels"
-             xmlns:local="using:GSS2.Test.Views"
-             x:DataType="vm:MainViewModel"
+             xmlns:local_vm="using:GSS2.Test.ViewModels"
+             xmlns:core_vm="using:GSS2.UI.Core.ViewModels"
+             x:DataType="local_vm:MainViewModel"
             x:Class="GSS2.Test.Views.MainView">
    <StackPanel Orientation="Vertical">
        <ContentControl Content="{Binding CameraViewModel}"  Width="200" Height="200"/>
@@ -38,9 +38,9 @@
    },
    "Camera": {
      "CameraId": "",
-      "ViewFinderFrameBufferCount": 10, 
-      "ViewFinderWidth": 800,
-      "ViewFinderHeight": 640,
+      "ViewFinderFrameBufferCount": 5, 
+      "ViewFinderWidth": 1920,
+      "ViewFinderHeight": 1080,
      "ViewFinderFps": 30,
      "ImageCaptureFrameBufferCount": 2,
      "ImageCaptureWidth": 4056,
@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Avalonia.LinuxFramebuffer" Version="11.3.11" />
+    <PackageReference Include="LiveChartsCore.SkiaSharpView.Avalonia" Version="2.0.0-rc6.1" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="10.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Hosting" Version="10.0.0" />
+    <PackageReference Include="Avalonia" Version="11.3.11" />
+    <PackageReference Include="Avalonia.Desktop" Version="11.3.11" />
+    <PackageReference Include="Avalonia.Themes.Fluent" Version="11.3.11" />
+    <PackageReference Include="Avalonia.Fonts.Inter" Version="11.3.11" />
+    <PackageReference Include="Avalonia.Diagnostics" Version="11.3.11">
+      <IncludeAssets Condition="'$(Configuration)' != 'Debug'">None</IncludeAssets>
+      <PrivateAssets Condition="'$(Configuration)' != 'Debug'">All</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.2.1" />
+  </ItemGroup>
+  
+  <ItemGroup>
+    <ProjectReference Include="..\GSS2.Core\GSS2.Core.csproj" />
+  </ItemGroup>
+
+</Project>
@@ -0,0 +1,67 @@
+using Microsoft.Extensions.Logging;
+
+using LibCameraSharp;
+
+using GSS2.Core.Hardware;
+
+using CommunityToolkit.Mvvm.ComponentModel;
+
+using Avalonia.Media;
+
+using LiveChartsCore.Measure;
+
+namespace GSS2.UI.Core.ViewModels;
+
+public partial class CameraViewModel : ViewModelBase, IDisposable
+{
+    private bool _disposedValue;
+    private readonly CameraService _cameraService;
+    private readonly ILogger<CameraViewModel> _logger;
+    private readonly System.Timers.Timer _renderTimer;
+
+    public event EventHandler? RenderReqested;
+
+    [ObservableProperty] private Color _backgroundColor = Colors.Transparent;
+    [ObservableProperty] private Stretch _stretchMode = Stretch.Uniform;
+    [ObservableProperty] private TileMode _tileMode = TileMode.None;
+
+    public CameraViewModel(CameraService cameraService, ILogger<CameraViewModel> logger)
+    {
+        _cameraService = cameraService;
+        _logger = logger;
+        _renderTimer = new System.Timers.Timer(33);
+        _renderTimer.Elapsed += (_, _) => RenderReqested?.Invoke(this, new EventArgs());
+        _logger.LogInformation("{} initialized", nameof(CameraViewModel));
+    }
+
+    public void StartViewFinder()
+    {
+        _cameraService.StartViewFinder();
+        _renderTimer.Start();
+    }
+    public void StopViewFinder()
+    {
+        _renderTimer.Stop();
+        _cameraService.StopViewFinder();
+    }
+    public (FrameBuffer, StreamConfiguration)? GrabViewFinderFrame() => _cameraService.GrabViewFinderFrame();
+    public void ReturnViewFinderFrame(FrameBuffer frameBuffer) => _cameraService.ReturnViewFinderFrame(frameBuffer);
+
+    protected virtual void Dispose(bool disposing)
+    {
+        if (!_disposedValue)
+        {
+            if (disposing)
+            {
+                _renderTimer.Stop();
+                _renderTimer.Dispose();
+            }
+            _disposedValue = true;
+        }
+    }
+    public void Dispose()
+    {
+        Dispose(disposing: true);
+        GC.SuppressFinalize(this);
+    }
+}
@@ -1,6 +1,6 @@
 using CommunityToolkit.Mvvm.ComponentModel;

-namespace GSS2.Test.ViewModels;
+namespace GSS2.UI.Core.ViewModels;

 public abstract class ViewModelBase : ObservableObject
 { }
@@ -2,7 +2,9 @@
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-        xmlns:vm="using:GSS2.Test.ViewModels"
+        xmlns:vm="using:GSS2.UI.Core.ViewModels"
        x:DataType="vm:CameraViewModel"
-        x:Class="GSS2.Test.Views.CameraView">
+        x:Class="GSS2.UI.Core.Views.CameraView"
+        HorizontalAlignment="Stretch"
+        VerticalAlignment="Stretch">
 </Control>
@@ -0,0 +1,614 @@
+using System.Numerics;
+using System.Runtime.InteropServices;
+
+using Microsoft.Extensions.Logging;
+
+using Avalonia;
+using Avalonia.LogicalTree;
+using Avalonia.Media;
+using Avalonia.OpenGL.Egl;
+using Avalonia.OpenGL.Controls;
+using Avalonia.OpenGL;
+using Avalonia.Threading;
+using Avalonia.Input;
+
+using GSS2.UI.Core.ViewModels;
+using System.ComponentModel;
+
+namespace GSS2.UI.Core.Views;
+
+public partial class CameraView : OpenGlControlBase
+{
+    private class OpenGLContext
+    {
+        [DllImport("libEGL.so.1")] public static extern IntPtr eglQueryString(IntPtr dpy, int name);
+        [DllImport("libEGL.so.1")] public static extern IntPtr eglGetCurrentDisplay();
+        [DllImport("libEGL.so.1")] public static extern IntPtr eglGetProcAddress(string procname);
+        [DllImport("libGL.so.1")] public static extern void glUniform1i(int location, int falue);
+        [DllImport("libGL.so.1")] public static extern void glUniformMatrix3x2fv(int location, int count, bool transpose, IntPtr value);
+        [DllImport("libGL.so.1")] public static extern void glUniformMatrix3fv(int location, int count, bool transpose, IntPtr value);
+
+        public const uint DRM_FORMAT_BGRX8888 = 0x34325258; // XR24 XRGB8888
+        public const int GL_TRIANGLE_STRIP = 0x0005;
+        public const int GL_TEXTURE_WRAP_S = 0x2802;
+        public const int GL_TEXTURE_WRAP_T = 0x2803;
+        public const int GL_CLAMP_TO_EDGE = 0x812F;
+        public const int EGL_LINUX_DMA_BUF_EXT = 0x3270;
+        public const int EGL_LINUX_DRM_FOURCC_EXT = 0x3271;
+        public const int EGL_DMA_BUF_PLANE0_FD_EXT = 0x3272;
+        public const int EGL_DMA_BUF_PLANE0_OFFSET_EXT = 0x3273;
+        public const int EGL_DMA_BUF_PLANE0_PITCH_EXT = 0x3274;
+
+        public delegate IntPtr GlEGLImageTargetTexture2DOESDeligate(int target, IntPtr image);
+        public delegate IntPtr EglCreateImageKHRDeligate(IntPtr dpy, IntPtr ctx, int target, IntPtr buffer, int[] attribs);
+        public delegate bool EglDestroyImageKHRDeligate(IntPtr dpy, IntPtr image);
+
+        private const string VERTEX_SHADER = @"
+            #version 300 es
+            layout (location = 0) in vec2 aPos;
+            layout (location = 1) in vec2 aUv;
+
+            uniform mat4 uMvp;
+            uniform mat3 uUv;
+            
+            out vec2 vUv;
+
+            void main()
+            {
+                vec3 uv = uUv * vec3(aUv, 1.0);
+                vUv = uv.xy;
+                gl_Position = uMvp * vec4(aPos, 0.0, 1.0);
+            }    
+        ";
+        private const string FRAGMENT_SHADER = @"
+            #version 300 es
+            precision mediump float;
+
+            in vec2 vUv;
+            uniform sampler2D uTex;
+
+            out vec4 fragColor;
+
+            void main()
+            {
+                fragColor = texture(uTex, vUv);
+            }  
+        ";
+        private readonly float[] Vertices =
+        [
+            -1f, -1f,  0f,  1f,
+             1f, -1f,  1f,  1f,
+            -1f,  1f,  0f,  0f,
+             1f,  1f,  1f,  0f,
+        ];
+
+        public IntPtr EglDisplay { get; }
+        public int Texture { get; }
+        public int Program { get; }
+        public int UTexLocation { get; }
+        public int UMvpLocation { get; }
+        public int UUvLocation { get; }
+        public int VAO { get; }
+        public int VBO { get; }
+        public EglCreateImageKHRDeligate EglCreateImageKHR { get; }
+        public EglDestroyImageKHRDeligate EglDestroyImageKHR { get; }
+        public GlEGLImageTargetTexture2DOESDeligate GlEGLImageTargetTexture2DOES { get; }
+
+        public OpenGLContext(GlInterface gl)
+        {
+            var glExtensions = gl.GetString(GlConsts.GL_EXTENSIONS);
+            if (glExtensions is null)
+                throw new Exception("GL extentions query returned null string");
+
+            if (!glExtensions.Contains("GL_OES_EGL_image") &&
+                !glExtensions.Contains("GL_OES_EGL_image_external"))
+                throw new Exception("Required GL extentions  \"GL_OES_EGL_image_external\" or \"GL_OES_EGL_image\" not found");
+
+            EglDisplay = eglGetCurrentDisplay();
+            if (EglDisplay == IntPtr.Zero)
+                throw new Exception("EGL display is nullptr");
+
+            var eglExtensions = Marshal.PtrToStringAnsi(eglQueryString(EglDisplay, EglConsts.EGL_EXTENSIONS));
+            if (eglExtensions is null)
+                throw new Exception("EGL extentions query returned null");
+
+            if (!eglExtensions.Contains("EGL_EXT_image_dma_buf_import"))
+                throw new Exception("Required EGL extention \"EGL_EXT_image_dma_buf_import\" not found");
+
+            var pEglCreateImageKHR = eglGetProcAddress("eglCreateImageKHR");
+            if (pEglCreateImageKHR == IntPtr.Zero)
+                throw new Exception("Required EGL method \"eglCreateImageKHR\" not found");
+            EglCreateImageKHR = Marshal.GetDelegateForFunctionPointer<EglCreateImageKHRDeligate>(pEglCreateImageKHR);
+
+            var pEglDestroyImageKHR = eglGetProcAddress("eglDestroyImageKHR");
+            if (pEglDestroyImageKHR == IntPtr.Zero)
+                throw new Exception("Required EGL method \"eglDestroyImageKHR\" not found");
+            EglDestroyImageKHR = Marshal.GetDelegateForFunctionPointer<EglDestroyImageKHRDeligate>(pEglDestroyImageKHR);
+
+            var pGlEGLImageTargetTexture2DOES = eglGetProcAddress("glEGLImageTargetTexture2DOES");
+            if (pGlEGLImageTargetTexture2DOES == IntPtr.Zero)
+                throw new Exception("Required EGL method \"glEGLImageTargetTexture2DOES\" not found");
+            GlEGLImageTargetTexture2DOES = Marshal.GetDelegateForFunctionPointer<GlEGLImageTargetTexture2DOESDeligate>(pGlEGLImageTargetTexture2DOES);
+
+            Texture = gl.GenTexture(); ThrowIfOpenGLError(gl);
+            gl.BindTexture(GlConsts.GL_TEXTURE_2D, Texture); ThrowIfOpenGLError(gl);
+            gl.TexParameteri(GlConsts.GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); ThrowIfOpenGLError(gl);
+            gl.TexParameteri(GlConsts.GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); ThrowIfOpenGLError(gl);
+
+            gl.TexParameteri(GlConsts.GL_TEXTURE_2D, GlConsts.GL_TEXTURE_MIN_FILTER, GlConsts.GL_LINEAR); ThrowIfOpenGLError(gl);
+            gl.TexParameteri(GlConsts.GL_TEXTURE_2D, GlConsts.GL_TEXTURE_MAG_FILTER, GlConsts.GL_LINEAR); ThrowIfOpenGLError(gl);
+
+            int vertexShader = gl.CreateShader(GlConsts.GL_VERTEX_SHADER); ThrowIfOpenGLError(gl);
+            gl.ShaderSourceString(vertexShader, VERTEX_SHADER); ThrowIfOpenGLError(gl);
+            gl.CompileShader(vertexShader);
+
+            int fragmentShader = gl.CreateShader(GlConsts.GL_FRAGMENT_SHADER); ThrowIfOpenGLError(gl);
+            gl.ShaderSourceString(fragmentShader, FRAGMENT_SHADER); ThrowIfOpenGLError(gl);
+            gl.CompileShader(fragmentShader); ThrowIfOpenGLError(gl);
+
+            Program = gl.CreateProgram(); ThrowIfOpenGLError(gl);
+            gl.AttachShader(Program, vertexShader); ThrowIfOpenGLError(gl);
+            gl.AttachShader(Program, fragmentShader); ThrowIfOpenGLError(gl);
+            gl.LinkProgram(Program); ThrowIfOpenGLError(gl);
+
+            gl.DeleteShader(vertexShader); ThrowIfOpenGLError(gl);
+            gl.DeleteShader(fragmentShader); ThrowIfOpenGLError(gl);
+
+            UTexLocation = gl.GetUniformLocationString(Program, "uTex"); ThrowIfOpenGLError(gl);
+            UMvpLocation = gl.GetUniformLocationString(Program, "uMvp"); ThrowIfOpenGLError(gl);
+            UUvLocation = gl.GetUniformLocationString(Program, "uUv"); ThrowIfOpenGLError(gl);
+
+            VAO = gl.GenVertexArray(); ThrowIfOpenGLError(gl);
+            VBO = gl.GenBuffer(); ThrowIfOpenGLError(gl);
+
+            gl.BindVertexArray(VAO); ThrowIfOpenGLError(gl);
+
+            gl.BindBuffer(GlConsts.GL_ARRAY_BUFFER, VAO); ThrowIfOpenGLError(gl);
+            unsafe
+            {
+                fixed (float* pVertices = Vertices)
+                    gl.BufferData(GlConsts.GL_ARRAY_BUFFER, Vertices.Length * sizeof(float), new IntPtr(pVertices), GlConsts.GL_STATIC_DRAW); ThrowIfOpenGLError(gl);
+            }
+
+            gl.EnableVertexAttribArray(0); ThrowIfOpenGLError(gl);
+            gl.VertexAttribPointer(0, 2, GlConsts.GL_FLOAT, 0, 4 * sizeof(float), IntPtr.Zero); ThrowIfOpenGLError(gl);
+
+            gl.EnableVertexAttribArray(1); ThrowIfOpenGLError(gl);
+            gl.VertexAttribPointer(1, 2, GlConsts.GL_FLOAT, 0, 4 * sizeof(float), 2 * sizeof(float)); ThrowIfOpenGLError(gl);
+
+            gl.BindVertexArray(0); ThrowIfOpenGLError(gl);
+        }
+
+        private void ThrowIfOpenGLError(GlInterface gl)
+        {
+            var error = gl.GetError();
+            if (error != 0)
+                throw new Exception($"OpenGL context initialization error: {error}");
+        }
+    }
+
+    private readonly ILogger<CameraView> _logger;
+    private readonly Dictionary<int, IntPtr> _importedDmaBufers = new Dictionary<int, nint>();
+    private bool _isViewFinderStarted = false;
+    private OpenGLContext? _openGLContext = null;
+    private Point? _lastPosition = null;
+    private float _zoom = 1;
+    private float _panX = 0;
+    private float _panY = 0;
+
+    public CameraView(ILogger<CameraView> logger)
+    {
+        _logger = logger;
+        _logger.LogInformation("{} initialized", nameof(CameraView));
+    }
+
+    protected override void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs ea)
+    {
+        if (DataContext is CameraViewModel viewModel)
+        {
+            try
+            {
+                viewModel.StartViewFinder();
+                viewModel.RenderReqested += RenderReqested;
+                _isViewFinderStarted = true;
+            }
+            catch (Exception ex)
+            {
+                _logger.LogCritical(ex, "Exception while view finder start");
+            }
+        }
+        else
+            _logger.LogCritical("Cannot start view finder, data context is null or not camera view model");
+
+        base.OnAttachedToVisualTree(ea);
+    }
+    protected override void OnDetachedFromLogicalTree(LogicalTreeAttachmentEventArgs ea)
+    {
+        if (_isViewFinderStarted && DataContext is CameraViewModel viewModel)
+        {
+            try
+            {
+                viewModel.StopViewFinder();
+                foreach (var (fd, image) in _importedDmaBufers)
+                    _openGLContext?.EglDestroyImageKHR!(_openGLContext.EglDisplay, image);
+                _isViewFinderStarted = false;
+            }
+            catch (Exception ex)
+            {
+                _logger.LogCritical(ex, "Exception while view finder stop");
+            }
+            viewModel.RenderReqested -= RenderReqested;
+        }
+        else if (_isViewFinderStarted)
+            _logger.LogCritical("Cannot stop view finder, data context is null or not camera view model");
+
+        _isViewFinderStarted = false;
+        base.OnDetachedFromLogicalTree(ea);
+    }
+
+    protected override void OnPointerWheelChanged(PointerWheelEventArgs ea)
+    {
+        if (ea.Pointer.Type == PointerType.Mouse)
+        {
+            var position = ea.GetPosition(this);
+
+            // Рассчитываем позицию в координатах изображения (до масштабирования)
+            var imageX = (position.X - Bounds.Width / 2 - _panX) / _zoom;
+            var imageY = (-position.Y + Bounds.Height / 2 - _panY) / _zoom; // Ось Y инвертированна
+
+            // Применяем масштаб
+            float zoomFactor = ea.Delta.Y > 0 ? 1.1f : 1 / 1.1f;
+            _zoom *= zoomFactor;
+            _zoom = Math.Clamp(_zoom, 1f, 10f);
+            _zoom = (float)Math.Round(_zoom, 2);
+
+            if (_zoom != 1f)
+            {
+                // Пересчитываем смещение так, чтобы указатель остался на месте
+                _panX = (float)(position.X - Bounds.Width / 2 - imageX * _zoom);
+                _panY = (float)(-position.Y + Bounds.Height / 2 - imageY * _zoom); // Ось Y инвертированна
+            }
+            else
+            {
+                // Если зум == 1, то возвращаем изображение к исходному смещению
+                _panX = 0f;
+                _panY = 0f;
+            }
+        }
+        else if (ea.Pointer.Type == PointerType.Touch)
+        {
+            _logger.LogInformation("PointerWheelChanged Type Touch {} {}", ea.GetPosition(this), ea.Delta);
+        }
+        base.OnPointerWheelChanged(ea);
+    }
+    protected override void OnPointerPressed(PointerPressedEventArgs ea)
+    {
+        if (ea.Pointer.Type == PointerType.Mouse)
+        {
+            if (ea.Properties.IsLeftButtonPressed)
+            {
+                if (ea.ClickCount == 2) // По двойному клику возвращаем изображение к смещение и зум к стандартным значениям
+                {
+                    _zoom = 1f;
+                    _panX = 0f;
+                    _panY = 0f;
+                }
+                else
+                    _lastPosition = ea.GetPosition(this);
+            }
+        }
+        else if (ea.Pointer.Type == PointerType.Touch)
+        {
+            _logger.LogInformation("PointerPressed Type Touch {}", ea.GetPosition(this));
+        }
+        base.OnPointerPressed(ea);
+    }
+    protected override void OnPointerReleased(PointerReleasedEventArgs ea)
+    {
+        if (ea.Pointer.Type == PointerType.Mouse)
+        {
+            if (!ea.Properties.IsLeftButtonPressed)
+                _lastPosition = null;
+        }
+        else if (ea.Pointer.Type == PointerType.Touch)
+        {
+            _logger.LogInformation("PointerReleased Type Touch {}", ea.GetPosition(this));
+        }
+        base.OnPointerReleased(ea);
+    }
+    protected override void OnPointerMoved(PointerEventArgs ea)
+    {
+        if (ea.Pointer.Type == PointerType.Mouse)
+        {
+            if (_lastPosition is null || _zoom == 1) // Если кнопка не нажата или зум == 1, то ничего не делаем
+            {
+                base.OnPointerMoved(ea);
+                return;
+            }
+            var position = ea.GetPosition(this);
+            _panX -= (float)(_lastPosition.Value.X - position.X);
+            _panY += (float)(_lastPosition.Value.Y - position.Y); // Ось Y инвертированна
+            _lastPosition = position;
+            base.OnPointerMoved(ea);
+        }
+        else if (ea.Pointer.Type == PointerType.Touch)
+        {
+            _logger.LogInformation("PointerMoved Type Touch {}", ea.GetPosition(this));
+        }
+    }
+
+    public override void Render(DrawingContext context)
+    {
+        var backgroundColor = (DataContext as CameraViewModel)?.BackgroundColor ?? Colors.Transparent;
+        context.FillRectangle(new SolidColorBrush(backgroundColor), new Rect(0, 0, Bounds.Width, Bounds.Height));
+        base.Render(context);
+    }
+    private void RenderReqested(object? sender, EventArgs ea) => Dispatcher.UIThread.Invoke(() => RequestNextFrameRendering());
+
+    protected override void OnOpenGlInit(GlInterface gl)
+    {
+        _logger.LogInformation("OpenGL initialized");
+        _logger.LogInformation("GL version: {}", gl.GetString(GlConsts.GL_VERSION));
+        _logger.LogInformation("GL vendor: {}", gl.GetString(GlConsts.GL_VENDOR));
+        _logger.LogInformation("GL renderer: {}", gl.GetString(GlConsts.GL_RENDERER));
+        try
+        {
+            _openGLContext = new OpenGLContext(gl);
+            _logger.LogInformation("OpenGL context initialized");
+        }
+        catch (Exception ex)
+        {
+            _logger.LogCritical(ex, "Error while OpenGL initialization");
+        }
+        base.OnOpenGlInit(gl);
+    }
+
+    protected override void OnOpenGlRender(GlInterface gl, int fb)
+    {
+        if (_openGLContext is null)
+        {
+            _logger.LogError("OpenGL render called with uninitialized EGL");
+            return;
+        }
+        try
+        {
+            (LibCameraSharp.FrameBuffer, LibCameraSharp.StreamConfiguration)? frame = null;
+            while (frame is null)
+                frame = (DataContext as CameraViewModel)?.GrabViewFinderFrame();
+            var (frameBuffer, streamConfiguration) = frame.Value;
+
+            // 0. Проверяем что полученый фрейм ожидаемый праильный формат
+            var width = streamConfiguration.Size.Width;
+            if (width <= 0)
+            {
+                _logger.LogError("Cannot render frame, stream configuration vaildation error, expected frame width >= 0, got {}", streamConfiguration.Size.Width);
+                (DataContext as CameraViewModel)?.ReturnViewFinderFrame(frameBuffer);
+                return;
+            }
+            var height = streamConfiguration.Size.Height;
+            if (height <= 0)
+            {
+                _logger.LogError("Cannot render frame, stream configuration vaildation error, expected frame height >= 0, got {}", streamConfiguration.Size.Height);
+                (DataContext as CameraViewModel)?.ReturnViewFinderFrame(frameBuffer);
+                return;
+            }
+            if (streamConfiguration.PixelFormat.Fourcc != OpenGLContext.DRM_FORMAT_BGRX8888)
+            {
+                _logger.LogError("Cannot render frame, stream configuration vaildation error, expected forcc: 0x{:X}, got 0x{:X}", OpenGLContext.DRM_FORMAT_BGRX8888, streamConfiguration.PixelFormat.Fourcc);
+                (DataContext as CameraViewModel)?.ReturnViewFinderFrame(frameBuffer);
+                return;
+            }
+            if (streamConfiguration.PixelFormat.Modifier != 0)
+            {
+                _logger.LogError("Cannot render frame, stream configuration vaildation error, expected DRM modifier: 0x{:X}, got 0x{:X}", 0, streamConfiguration.PixelFormat.Modifier);
+                (DataContext as CameraViewModel)?.ReturnViewFinderFrame(frameBuffer);
+                return;
+            }
+            if (frameBuffer.Planes.Count() != 1)
+            {
+                _logger.LogError("Cannot render frame, planes vaildation error, expected planes count: 0, got {}", frameBuffer.Planes.Count());
+                (DataContext as CameraViewModel)?.ReturnViewFinderFrame(frameBuffer);
+                return;
+            }
+            var plane = frameBuffer.Planes.First();
+            if (plane.Length != width * height * 4)
+            {
+                _logger.LogError("Cannot render frame, plane validation error, expected plane size 0x{:X}, got 0x{:X}", width * height * 4, plane.Length);
+                (DataContext as CameraViewModel)?.ReturnViewFinderFrame(frameBuffer);
+                return;
+            }
+            var fd = plane.Fd.Get();
+            if (fd <= 0)
+            {
+                _logger.LogError("Cannot render frame, FD vaildation error, FD >= 0, got 0x{:X}", fd);
+                (DataContext as CameraViewModel)?.ReturnViewFinderFrame(frameBuffer);
+                return;
+            }
+
+            var stretchMode = (DataContext as CameraViewModel)?.StretchMode ?? Stretch.Uniform;
+            var tileMode = (DataContext as CameraViewModel)?.TileMode ?? TileMode.None;
+
+            // 1. Очищаем экран
+            gl.Viewport(0, 0, (int)Bounds.Width, (int)Bounds.Height);
+            gl.ClearColor(0f, 0f, 0f, 0f);
+            gl.Clear(GlConsts.GL_COLOR_BUFFER_BIT);
+
+            // 2. Создаём EGL изображение из dma-buf
+            IntPtr image;
+            if (_importedDmaBufers.ContainsKey(fd))
+            {
+                // 2.1. Если EGL изображение для fd уже создано, то берём его из словаря
+                image = _importedDmaBufers[fd];
+            }
+            else
+            {
+                // 2.2. Если EGL изображение для fd не создано, то создаём
+                var attribs = new[]
+                {
+                    EglConsts.EGL_WIDTH, (int)width,
+                    EglConsts.EGL_HEIGHT, (int)height,
+                    OpenGLContext.EGL_LINUX_DRM_FOURCC_EXT, unchecked((int)OpenGLContext.DRM_FORMAT_BGRX8888),
+                    OpenGLContext.EGL_DMA_BUF_PLANE0_FD_EXT, fd,
+                    OpenGLContext.EGL_DMA_BUF_PLANE0_OFFSET_EXT, 0,
+                    OpenGLContext.EGL_DMA_BUF_PLANE0_PITCH_EXT, (int)(width * 4),
+                    EglConsts.EGL_NONE
+                };
+                image = _openGLContext.EglCreateImageKHR.Invoke(_openGLContext.EglDisplay, IntPtr.Zero, OpenGLContext.EGL_LINUX_DMA_BUF_EXT, IntPtr.Zero, attribs);
+                _importedDmaBufers.Add(fd, image);
+            }
+
+            // 3. Биндим текстуры текстуры
+            gl.ActiveTexture(GlConsts.GL_TEXTURE0);
+            gl.BindTexture(GlConsts.GL_TEXTURE_2D, _openGLContext.Texture);
+
+            // 4. Привязываем EGL изображение к текстуре
+            _openGLContext.GlEGLImageTargetTexture2DOES!(GlConsts.GL_TEXTURE_2D, image);
+
+            // 5. Вычисляем матрицы транформаций
+            var mvp = ComputeMvp(stretchMode, width, height);
+            var zoom = Matrix4x4.CreateScale(_zoom, _zoom, 1f);
+            var translate = Matrix4x4.CreateTranslation((float)(_panX / Bounds.Width * 2), (float)(_panY / Bounds.Height * 2), 0);
+            mvp *= zoom;
+            mvp *= translate;
+            var mvpArray = new[]
+            {
+                mvp.M11, mvp.M12, mvp.M13, mvp.M14,
+                mvp.M21, mvp.M22, mvp.M23, mvp.M24,
+                mvp.M31, mvp.M32, mvp.M33, mvp.M34,
+                mvp.M41, mvp.M42, mvp.M43, mvp.M44,
+            };
+            unsafe
+            {
+                fixed (float* pMvp = mvpArray)
+                    gl.UniformMatrix4fv(_openGLContext.UMvpLocation, 1, false, pMvp);
+            }
+
+            var uv = ComputeUv(tileMode);
+            var uvArray = new[]
+            {
+                uv.M11, uv.M12, 0f,
+                uv.M21, uv.M22, 0f,
+                uv.M31, uv.M32, 1f
+            };
+            unsafe
+            {
+                fixed (float* pUv = uvArray)
+                    OpenGLContext.glUniformMatrix3fv(_openGLContext.UUvLocation, 1, false, new IntPtr(pUv));
+            }
+
+            // 6. Запускаем шейдер
+            gl.UseProgram(_openGLContext.Program);
+            OpenGLContext.glUniform1i(_openGLContext.UTexLocation, 0);
+
+            // 7. Рисуем вершины на экране
+            gl.BindVertexArray(_openGLContext.VAO);
+            gl.DrawArrays(OpenGLContext.GL_TRIANGLE_STRIP, 0, 4);
+
+            // 8. Уничтожаем EGL изображение
+            // _openGLContext.EglDestroyImageKHR!(_openGLContext.EglDisplay, image);
+
+            (DataContext as CameraViewModel)?.ReturnViewFinderFrame(frameBuffer);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Exception whiel OpenGL render");
+        }
+    }
+    private Matrix4x4 ComputeMvp(Stretch stretch, float imageWidth, float imageHeight)
+    {
+        float viewWidth = (float)Bounds.Width;
+        float viewHeight = (float)Bounds.Height;
+
+        float sx = 1f;
+        float sy = 1f;
+
+        float viewAspect = viewWidth / viewHeight;
+        float imgAspect = imageWidth / imageHeight;
+
+        switch (stretch)
+        {
+            case Stretch.None:
+                sx = imageWidth / viewWidth;
+                sy = imageHeight / viewHeight;
+                break;
+
+            case Stretch.Fill:
+                break;
+
+            case Stretch.Uniform:
+                if (imgAspect > viewAspect)
+                    sy = viewAspect / imgAspect;
+                else
+                    sx = imgAspect / viewAspect;
+                break;
+
+            case Stretch.UniformToFill:
+                if (imgAspect > viewAspect)
+                    sx = imgAspect / viewAspect;
+                else
+                    sy = viewAspect / imgAspect;
+                break;
+        }
+
+        return Matrix4x4.CreateScale(sx, sy, 1f);
+    }
+    private Matrix3x2 ComputeUv(TileMode mode)
+    {
+        float sx = 1f;
+        float sy = 1f;
+        float ox = 0f;
+        float oy = 0f;
+
+        switch (mode)
+        {
+            case TileMode.Tile:
+                sx = sy = 2f;
+                break;
+
+            case TileMode.FlipX:
+                sx = -1f;
+                ox = 1f;
+                break;
+
+            case TileMode.FlipY:
+                sy = -1f;
+                oy = 1f;
+                break;
+
+            case TileMode.FlipXY:
+                sx = sy = -1f;
+                ox = oy = 1f;
+                break;
+        }
+
+        return new Matrix3x2(
+            sx, 0,
+            0, sy,
+            ox, oy
+        );
+    }
+    private (float sx, float sy) ComputeScale(Stretch mode, float imageWidth, float imageHeight)
+    {
+        float viewWidth = (float)Bounds.Width;
+        float viewHeight = (float)Bounds.Height;
+
+        float scaleX = viewWidth / imageWidth;
+        float scaleY = viewHeight / imageHeight;
+
+        switch (mode)
+        {
+            case Stretch.None:
+                return (imageWidth / viewWidth, imageHeight / viewHeight);
+            case Stretch.Fill:
+                return (1f, 1f);
+            case Stretch.Uniform:
+                var sMin = MathF.Min(scaleX, scaleY);
+                return (imageWidth * sMin / viewWidth, imageHeight * sMin / viewHeight);
+            case Stretch.UniformToFill:
+                var sMax = MathF.Max(scaleX, scaleY);
+                return (imageWidth * sMax / viewWidth, imageHeight * sMax / viewHeight);
+            default:
+                return (1f, 1f);
+        }
+    }
+}
@@ -15,6 +15,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GSS2.LightsControl.CSharpCl
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GSS2.FrameDecoders", "GSS2.FrameDecoders\GSS2.FrameDecoders.csproj", "{05085293-E710-41D6-8F61-701ADBA52FA9}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GSS2.UI.Core", "GSS2.UI.Core\GSS2.UI.Core.csproj", "{52424CF4-88F4-440A-AA37-21F5A080AA16}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -73,6 +75,18 @@ Global
 		{05085293-E710-41D6-8F61-701ADBA52FA9}.Release|x64.Build.0 = Release|Any CPU
 		{05085293-E710-41D6-8F61-701ADBA52FA9}.Release|x86.ActiveCfg = Release|Any CPU
 		{05085293-E710-41D6-8F61-701ADBA52FA9}.Release|x86.Build.0 = Release|Any CPU
+		{52424CF4-88F4-440A-AA37-21F5A080AA16}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{52424CF4-88F4-440A-AA37-21F5A080AA16}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{52424CF4-88F4-440A-AA37-21F5A080AA16}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{52424CF4-88F4-440A-AA37-21F5A080AA16}.Debug|x64.Build.0 = Debug|Any CPU
+		{52424CF4-88F4-440A-AA37-21F5A080AA16}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{52424CF4-88F4-440A-AA37-21F5A080AA16}.Debug|x86.Build.0 = Debug|Any CPU
+		{52424CF4-88F4-440A-AA37-21F5A080AA16}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{52424CF4-88F4-440A-AA37-21F5A080AA16}.Release|Any CPU.Build.0 = Release|Any CPU
+		{52424CF4-88F4-440A-AA37-21F5A080AA16}.Release|x64.ActiveCfg = Release|Any CPU
+		{52424CF4-88F4-440A-AA37-21F5A080AA16}.Release|x64.Build.0 = Release|Any CPU
+		{52424CF4-88F4-440A-AA37-21F5A080AA16}.Release|x86.ActiveCfg = Release|Any CPU
+		{52424CF4-88F4-440A-AA37-21F5A080AA16}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE