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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,180 @@ | ||
| #nullable enable | ||
|
|
||
| using System; | ||
| using System.IO; | ||
| using SkiaSharp; | ||
| using Uno.Extensions; | ||
| using Uno.UI.Xaml.Core; | ||
| using Windows.UI.Xaml.Input; | ||
| using WUX = Windows.UI.Xaml; | ||
| using Uno.Foundation.Logging; | ||
| using Windows.UI.Xaml.Controls; | ||
| using System.Diagnostics; | ||
| using System.Runtime.InteropServices; | ||
| using Uno.UI.Runtime.Skia.Helpers.Windows; | ||
| using Uno.UI.Runtime.Skia.Helpers.Dpi; | ||
| using Windows.Graphics.Display; | ||
| using Gdk; | ||
| using System.Reflection; | ||
| using Gtk; | ||
| using Silk.NET.OpenGL; | ||
| using Silk.NET.Core.Loader; | ||
|
|
||
| namespace Uno.UI.Runtime.Skia | ||
| { | ||
|
|
||
| internal class GLRenderSurface : GLArea, IRenderSurface | ||
| { | ||
| private const SKColorType colorType = SKColorType.Rgba8888; | ||
| private const GRSurfaceOrigin surfaceOrigin = GRSurfaceOrigin.BottomLeft; | ||
|
|
||
| private readonly DisplayInformation _displayInformation; | ||
| private FocusManager? _focusManager; | ||
|
|
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| private float? _dpi = 1; | ||
| private GRContext? _grContext; | ||
| private GL _gl; | ||
| private GRBackendRenderTarget? _renderTarget; | ||
| private SKSurface? _surface; | ||
|
|
||
| public GLRenderSurface() | ||
| { | ||
| _displayInformation = DisplayInformation.GetForCurrentView(); | ||
| _displayInformation.DpiChanged += OnDpiChanged; | ||
| WUX.Window.InvalidateRender | ||
| += () => | ||
| { | ||
| // TODO Uno: Make this invalidation less often if possible. | ||
| InvalidateOverlays(); | ||
| QueueRender(); | ||
| }; | ||
|
|
||
| // Set some event handlers | ||
| Render += UnoGLDrawingArea_Render; | ||
| Realized += GLRenderSurface_Realized; | ||
|
|
||
| HasDepthBuffer = false; | ||
| HasStencilBuffer = false; | ||
| AutoRender = true; | ||
| SetRequiredVersion(3, 3); | ||
|
|
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| _gl = new GL(new Silk.NET.Core.Contexts.DefaultNativeContext(new GLCoreLibraryNameContainer().GetLibraryName())); | ||
| } | ||
|
|
||
| private void GLRenderSurface_Realized(object? sender, EventArgs e) | ||
| { | ||
| Context.MakeCurrent(); | ||
| } | ||
|
|
||
| private void UnoGLDrawingArea_Render(object o, RenderArgs args) | ||
| { | ||
| var sw = Stopwatch.StartNew(); | ||
|
|
||
| args.Context.MakeCurrent(); | ||
|
|
||
|
|
||
| // create the contexts if not done already | ||
| if (_grContext == null) | ||
| { | ||
| var glInterface = GRGlInterface.Create(); | ||
| _grContext = GRContext.CreateGl(glInterface); | ||
| } | ||
|
|
||
| _gl.Clear(ClearBufferMask.ColorBufferBit); | ||
| _gl.ClearColor(1.0f, 1.0f, 1.0f, 1.0f); | ||
|
|
||
| // manage the drawing surface | ||
| var res = (int)Math.Max(1.0, Screen.Resolution / 96.0); | ||
| var w = Math.Max(0, AllocatedWidth * res); | ||
| var h = Math.Max(0, AllocatedHeight * res); | ||
|
|
||
| if (_renderTarget == null || _surface == null || _renderTarget.Width != w || _renderTarget.Height != h) | ||
| { | ||
| // create or update the dimensions | ||
| _renderTarget?.Dispose(); | ||
|
|
||
| _gl.GetInteger(GLEnum.FramebufferBinding, out var framebuffer); | ||
| _gl.GetInteger(GLEnum.Stencil, out var stencil); | ||
| _gl.GetInteger(GLEnum.Samples, out var samples); | ||
| var maxSamples = _grContext.GetMaxSurfaceSampleCount(colorType); | ||
|
|
||
| if (samples > maxSamples) | ||
| { | ||
| samples = maxSamples; | ||
| } | ||
|
|
||
| var glInfo = new GRGlFramebufferInfo((uint)framebuffer, colorType.ToGlSizedFormat()); | ||
|
|
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| _renderTarget = new GRBackendRenderTarget(w, h, samples, stencil, glInfo); | ||
|
|
||
| // create the surface | ||
| _surface?.Dispose(); | ||
| _surface = SKSurface.Create(_grContext, _renderTarget, surfaceOrigin, colorType); | ||
|
|
||
| Console.WriteLine($"Recreated surfaces: {w}x{h} Samples:{samples} colorType:{colorType}"); | ||
| } | ||
|
|
||
| using (new SKAutoCanvasRestore(_surface.Canvas, true)) | ||
| { | ||
| _surface.Canvas.Clear(SKColors.White); | ||
|
|
||
| // _surface.Canvas.Scale((float)(1/_dpi)); | ||
|
|
||
| WUX.Window.Current.Compositor.Render(_surface); | ||
| } | ||
|
|
||
| // update the control | ||
| _surface.Canvas.Flush(); | ||
|
|
||
| _gl.Flush(); | ||
| sw.Stop(); | ||
| Console.WriteLine($"Frame: {sw.Elapsed}"); | ||
| } | ||
|
|
||
| private void OnDpiChanged(DisplayInformation sender, object args) => | ||
| UpdateDpi(); | ||
|
|
||
| private void InvalidateOverlays() | ||
| { | ||
| _focusManager ??= VisualTree.GetFocusManagerForElement(Windows.UI.Xaml.Window.Current?.RootElement); | ||
| _focusManager?.FocusRectManager?.RedrawFocusVisual(); | ||
| if (_focusManager?.FocusedElement is TextBox textBox) | ||
| { | ||
| textBox.TextBoxView?.Extension?.InvalidateLayout(); | ||
| } | ||
| } | ||
|
|
||
| public void TakeScreenshot(string filePath) | ||
| { | ||
| using Stream memStream = File.Open(filePath, FileMode.Create, FileAccess.Write, FileShare.None); | ||
|
|
||
| var image = _surface.Snapshot(); | ||
| var pngData = image.Encode(); | ||
| pngData.SaveTo(memStream); | ||
| } | ||
|
|
||
| private void UpdateDpi() => _dpi = (float)_displayInformation.RawPixelsPerViewPixel; | ||
|
|
||
| // Extracted from https://github.com/dotnet/Silk.NET/blob/23f9bd4d67ad21c69fbd69cc38a62fb2c0ec3927/src/OpenGL/Silk.NET.OpenGL/GLCoreLibraryNameContainer.cs | ||
| internal class GLCoreLibraryNameContainer : SearchPathContainer | ||
| { | ||
| /// <inheritdoc /> | ||
| public override string Linux => "libGL.so.1"; | ||
|
|
||
| /// <inheritdoc /> | ||
| public override string MacOS => "/System/Library/Frameworks/OpenGL.framework/OpenGL"; | ||
|
|
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| /// <inheritdoc /> | ||
| public override string Android => "libGL.so.1"; | ||
|
|
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| /// <inheritdoc /> | ||
| public override string IOS => "/System/Library/Frameworks/OpenGL.framework/OpenGL"; | ||
|
|
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| /// <inheritdoc /> | ||
| public override string Windows64 => "opengl32.dll"; | ||
|
|
||
| /// <inheritdoc /> | ||
| public override string Windows86 => "opengl32.dll"; | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| namespace Uno.UI.Runtime.Skia | ||
| { | ||
| internal interface IRenderSurface | ||
| { | ||
| void TakeScreenshot(string filePath); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
| namespace Uno.UI.Runtime.Skia | ||
| { | ||
| public enum RenderSurfaceType | ||
| { | ||
| Software, | ||
| OpenGL, | ||
| } | ||
| } |
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