1 files changed, 135 insertions, 0 deletions
diff --git a/Ryujinx.Ava/Ui/Backend/Vulkan/Skia/VulkanRenderTarget.cs b/Ryujinx.Ava/Ui/Backend/Vulkan/Skia/VulkanRenderTarget.cs
new file mode 100644
index 00000000..ba7ddc7a
--- /dev/null
+++ b/Ryujinx.Ava/Ui/Backend/Vulkan/Skia/VulkanRenderTarget.cs
@@ -0,0 +1,135 @@
+using System;
+using Avalonia.Skia;
+using Ryujinx.Ava.Ui.Vulkan;
+using Ryujinx.Ava.Ui.Vulkan.Surfaces;
+using SkiaSharp;
+
+namespace Ryujinx.Ava.Ui.Backend.Vulkan
+{
+    internal class VulkanRenderTarget : ISkiaGpuRenderTarget
+    {
+        public GRContext GrContext { get; set; }
+
+        private readonly VulkanSurfaceRenderTarget _surface;
+        private readonly IVulkanPlatformSurface _vulkanPlatformSurface;
+
+        public VulkanRenderTarget(VulkanPlatformInterface vulkanPlatformInterface, IVulkanPlatformSurface vulkanPlatformSurface)
+        {
+            _surface = vulkanPlatformInterface.CreateRenderTarget(vulkanPlatformSurface);
+            _vulkanPlatformSurface = vulkanPlatformSurface;
+        }
+
+        public void Dispose()
+        {
+            _surface.Dispose();
+        }
+
+        public ISkiaGpuRenderSession BeginRenderingSession()
+        {
+            var session = _surface.BeginDraw(_vulkanPlatformSurface.Scaling);
+            bool success = false;
+            try
+            {
+                var disp = session.Display;
+                var api = session.Api;
+
+                var size = session.Size;
+                var scaling = session.Scaling;
+                if (size.Width <= 0 || size.Height <= 0 || scaling < 0)
+                {
+                    size = new Avalonia.PixelSize(1, 1);
+                    scaling = 1;
+                }
+
+                lock (GrContext)
+                {
+                    GrContext.ResetContext();
+
+                    var imageInfo = new GRVkImageInfo()
+                    {
+                        CurrentQueueFamily = disp.QueueFamilyIndex,
+                        Format = _surface.ImageFormat,
+                        Image = _surface.Image.Handle,
+                        ImageLayout = (uint)_surface.Image.CurrentLayout,
+                        ImageTiling = (uint)_surface.Image.Tiling,
+                        ImageUsageFlags = _surface.UsageFlags,
+                        LevelCount = _surface.MipLevels,
+                        SampleCount = 1,
+                        Protected = false,
+                        Alloc = new GRVkAlloc()
+                        {
+                            Memory = _surface.Image.MemoryHandle,
+                            Flags = 0,
+                            Offset = 0,
+                            Size = _surface.MemorySize
+                        }
+                    };
+
+                    var renderTarget =
+                        new GRBackendRenderTarget((int)size.Width, (int)size.Height, 1,
+                            imageInfo);
+                    var surface = SKSurface.Create(GrContext, renderTarget,
+                        GRSurfaceOrigin.TopLeft,
+                        _surface.IsRgba ? SKColorType.Rgba8888 : SKColorType.Bgra8888, SKColorSpace.CreateSrgb());
+
+                    if (surface == null)
+                    {
+                        throw new InvalidOperationException(
+                            "Surface can't be created with the provided render target");
+                    }
+
+                    success = true;
+
+                    return new VulkanGpuSession(GrContext, renderTarget, surface, session);
+                }
+            }
+            finally
+            {
+                if (!success)
+                {
+                    session.Dispose();
+                }
+            }
+        }
+
+        public bool IsCorrupted { get; }
+
+        internal class VulkanGpuSession : ISkiaGpuRenderSession
+        {
+            private readonly GRBackendRenderTarget _backendRenderTarget;
+            private readonly VulkanSurfaceRenderingSession _vulkanSession;
+
+            public VulkanGpuSession(GRContext grContext,
+                GRBackendRenderTarget backendRenderTarget,
+                SKSurface surface,
+                VulkanSurfaceRenderingSession vulkanSession)
+            {
+                GrContext = grContext;
+                _backendRenderTarget = backendRenderTarget;
+                SkSurface = surface;
+                _vulkanSession = vulkanSession;
+
+                SurfaceOrigin = GRSurfaceOrigin.TopLeft;
+            }
+
+            public void Dispose()
+            {
+                lock (_vulkanSession.Display.Lock)
+                {
+                    SkSurface.Canvas.Flush();
+
+                    SkSurface.Dispose();
+                    _backendRenderTarget.Dispose();
+                    GrContext.Flush();
+
+                    _vulkanSession.Dispose();
+                }
+            }
+
+            public GRContext GrContext { get; }
+            public SKSurface SkSurface { get; }
+            public double ScaleFactor => _vulkanSession.Scaling;
+            public GRSurfaceOrigin SurfaceOrigin { get; }
+        }
+    }
+}