public static void ProcessPaint(ref PaintPacket packet, NativePixelBuffer pixelBuffer,
Action <SKSurface> handler)
{
var hwnd = packet.Hwnd;
Rectangle clientRect;
User32Methods.GetClientRect(hwnd, out clientRect);
var size = clientRect.Size;
pixelBuffer.EnsureSize(size.Width, size.Height);
PaintStruct ps;
var hdc = User32Methods.BeginPaint(hwnd, out ps);
var skPainted = false;
try
{
using (var surface = SKSurface.Create(
size.Width,
size.Height,
SKColorType.Bgra8888,
SKAlphaType.Premul,
pixelBuffer.Handle,
pixelBuffer.Stride))
{
if (surface != null)
{
handler(surface);
skPainted = true;
}
}
}
finally
{
if (skPainted)
{
Gdi32Helpers.SetRgbBitsToDevice(hdc, size.Width, size.Height, pixelBuffer.Handle);
}
User32Methods.EndPaint(hwnd, ref ps);
}
}
public static unsafe void ProcessPaint(ref PaintPacket packet, NativePixelBuffer pixelBuffer,
Action <SKSurface> handler)
{
var hwnd = packet.Hwnd;
Rectangle clientRect;
User32Methods.GetClientRect(hwnd, out clientRect);
var size = clientRect.Size;
pixelBuffer.EnsureSize(size.Width, size.Height);
PaintStruct ps;
var hdc = User32Methods.BeginPaint(hwnd, out ps);
var skPainted = false;
try
{
using (var surface = SKSurface.Create(
size.Width,
size.Height,
SKColorType.Bgra8888,
SKAlphaType.Premul,
pixelBuffer.Handle,
pixelBuffer.Stride))
{
if (surface != null)
{
handler(surface);
/*
* foreach (var VARIABLE in Enumerable.Range(0, pixelBuffer.Stride * size.Height / 4))
* {
* var value = Marshal.ReadInt32(pixelBuffer.Handle, VARIABLE*4);
* // ABGR >> ARGB
* unchecked
* {
* value = ((value & (int)0xff000000) >> 0) +
* ((value & 0xff0000) >> 16 )+
* ((value & 0xff00) << 0) +
* ((value & 0xff) << 16);
* }
*
* Marshal.WriteInt32(pixelBuffer.Handle, VARIABLE * 4, value);
* }*/
var max = pixelBuffer.Stride * size.Height / 4;
int *arr = (int *)pixelBuffer.Handle.ToPointer();
unchecked
{
var a = 0;
while (a < max)
{/*
* arr = ((*arr & (int) 0xff000000) >> 0) +
* ((*arr & 0xff0000) >> 16) +
* ((*arr & 0xff00) << 0) +
* ((*arr & 0xff) << 16);
* arr++;*/
a++;
}
}
skPainted = true;
}
}
}
finally
{
if (skPainted)
{
Gdi32Helpers.SetRgbBitsToDevice(hdc, size.Width, size.Height, pixelBuffer.Handle);
}
User32Methods.EndPaint(hwnd, ref ps);
}
}