private void Render(Surface dst, Surface src, Rectangle rect)
{
if (blur != 0)
{
// Call the Gaussian Blur function
blurEffect.Render(new Rectangle[] { rect }, 0, 1);
}
else
{
dst.CopySurface(shadowSurface, rect.Location, rect);
}
Rectangle selection = EnvironmentParameters.GetSelection(src.Bounds).GetBoundsInt();
Rectangle shadowRect = Rectangle.FromLTRB(
selection.Left + margin + offsetX,
selection.Top + margin + offsetY,
selection.Right - margin + offsetX,
selection.Bottom - margin + offsetY);
ColorBgra shadowPixel;
for (int y = rect.Top; y < rect.Bottom; y++)
{
if (IsCancelRequested)
{
return;
}
for (int x = rect.Left; x < rect.Right; x++)
{
shadowPixel = dst[x, y];
shadowPixel.A = shadowRect.Contains(x, y) ? Int32Util.ClampToByte(shadowPixel.A * color.A / byte.MaxValue) : byte.MinValue;
dst[x, y] = normalOp.Apply(src[x, y], shadowPixel);
}
}
}
public void GaussianBlurEffect2()
{
var src = GetSourceImage("input.png");
var effect = new GaussianBlurEffect(100);
effect.Render(src);
Compare(src, "gaussianblur2.png");
}