Merge pull request #3889 from AvaloniaUI/feature/allow-user-to-configure-video-memory

Allow user to set GPU VMem limit.

src/Skia/Avalonia.Skia/PlatformRenderInterface.cs

@@ -18,7 +18,7 @@ namespace Avalonia.Skia
 
         private GRContext GrContext { get; }
 
-        public PlatformRenderInterface(ICustomSkiaGpu customSkiaGpu)
+        public PlatformRenderInterface(ICustomSkiaGpu customSkiaGpu, long maxResourceBytes = 100000000)
         {
             if (customSkiaGpu != null)
             {
@@ -26,6 +26,10 @@ namespace Avalonia.Skia
 
                 GrContext = _customSkiaGpu.GrContext;
 
+                GrContext.GetResourceCacheLimits(out var maxResources, out _);
+
+                GrContext.SetResourceCacheLimits(maxResources, maxResourceBytes);
+
                 return;
             }
 
@@ -39,6 +43,10 @@ namespace Avalonia.Skia
                     : GRGlInterface.AssembleGlesInterface((_, proc) => display.GlInterface.GetProcAddress(proc)))
                 {
                     GrContext = GRContext.Create(GRBackend.OpenGL, iface);
+
+                    GrContext.GetResourceCacheLimits(out var maxResources, out _);
+
+                    GrContext.SetResourceCacheLimits(maxResources, maxResourceBytes);
                 }
                 display.ClearContext();
             }

src/Skia/Avalonia.Skia/SkiaOptions.cs

@@ -8,9 +8,18 @@ namespace Avalonia
     /// </summary>
     public class SkiaOptions
     {
+        public SkiaOptions()
+        {
+            MaxGpuResourceSizeBytes = 512000000;
+        }
         /// <summary>
         /// Custom gpu factory to use. Can be used to customize behavior of Skia renderer.
         /// </summary>
         public Func<ICustomSkiaGpu> CustomGpuFactory { get; set; }
+
+        /// <summary>
+        /// The maximum number of bytes for video memory to store textures and resources.
+        /// </summary>
+        public long MaxGpuResourceSizeBytes { get; set; }
     }
 }

src/Skia/Avalonia.Skia/SkiaPlatform.cs

@@ -18,7 +18,7 @@ namespace Avalonia.Skia
         public static void Initialize(SkiaOptions options)
         {
             var customGpu = options.CustomGpuFactory?.Invoke();
-            var renderInterface = new PlatformRenderInterface(customGpu);
+            var renderInterface = new PlatformRenderInterface(customGpu, options.MaxGpuResourceSizeBytes);
 
             AvaloniaLocator.CurrentMutable
                 .Bind<IPlatformRenderInterface>().ToConstant(renderInterface)