protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
if (grContext != null)
{
var desc = new GRBackendRenderTargetDesc
{
Width = Width,
Height = Height,
Config = GRPixelConfig.Bgra8888,
Origin = GRSurfaceOrigin.TopLeft,
SampleCount = 1,
StencilBits = 0,
RenderTargetHandle = IntPtr.Zero,
};
using (var surface = SKSurface.Create(grContext, desc))
{
var skcanvas = surface.Canvas;
sample.Method(skcanvas, Width, Height);
skcanvas.Flush();
}
SwapBuffers();
}
}
public override void DrawRect(CoreGraphics.CGRect dirtyRect)
{
base.DrawRect (dirtyRect);
if (grContext != null)
{
var sampleCount = grContext.GetRecommendedSampleCount(GRPixelConfig.Rgba8888, 96.0f);
var desc = new GRBackendRenderTargetDesc
{
Width = (int)Bounds.Width,
Height = (int)Bounds.Height,
Config = GRPixelConfig.Rgba8888,
Origin = GRSurfaceOrigin.TopLeft,
SampleCount = sampleCount,
StencilBits = 0,
RenderTargetHandle = IntPtr.Zero,
};
using (var surface = SKSurface.Create (grContext, desc))
{
var skcanvas = surface.Canvas;
sample.Method (skcanvas, (int)Bounds.Width, (int)Bounds.Height);
skcanvas.Flush ();
}
GL.Flush();
}
}
public static SKSurface Create(GRContext context, GRBackendRenderTargetDesc desc, SKSurfaceProps props)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var renderTarget = new GRBackendRenderTarget(context.Backend, desc);
return(Create(context, renderTarget, desc.Origin, desc.Config.ToColorType(), null, new SKSurfaceProperties(props)));
}
public GRBackendRenderTarget(GRBackend backend, GRBackendRenderTargetDesc desc)
: this(IntPtr.Zero, true)
{
switch (backend)
{
case GRBackend.Metal:
throw new NotSupportedException();
case GRBackend.OpenGL:
var glInfo = new GRGlFramebufferInfo((uint)desc.RenderTargetHandle, desc.Config.ToGlSizedFormat());
CreateGl(desc.Width, desc.Height, desc.SampleCount, desc.StencilBits, glInfo);
break;
case GRBackend.Vulkan:
throw new NotSupportedException();
default:
throw new ArgumentOutOfRangeException(nameof(backend));
}
}
public static SKSurface Create(GRContext context, GRBackendRenderTargetDesc desc)
{
return(GetObject <SKSurface> (SkiaApi.sk_surface_new_backend_render_target(context.Handle, ref desc, IntPtr.Zero)));
}
public static SKSurface Create (GRContext context, GRBackendRenderTargetDesc desc)
{
return GetObject<SKSurface> (SkiaApi.sk_surface_new_backend_render_target (context.Handle, ref desc, IntPtr.Zero));
}
public extern static sk_surface_t sk_surface_new_backend_render_target (gr_context_t context, ref GRBackendRenderTargetDesc desc, IntPtr propsZero);
public extern static sk_surface_t sk_surface_new_backend_render_target (gr_context_t context, ref GRBackendRenderTargetDesc desc, ref SKSurfaceProps props);
