public void AlphaMaskIsApplied()
{
var srcInfo = new SKImageInfo(4, 4);
var srcBmp = new SKBitmap(srcInfo);
srcBmp.Erase(SKColors.Red);
var pixels = srcBmp.Pixels;
foreach (var pixel in pixels)
{
Assert.AreEqual(255, pixel.Alpha);
}
var maskBuffer = new byte[]
{
128, 127, 126, 125,
101, 102, 103, 104,
96, 95, 94, 93,
72, 73, 74, 75
};
var bounds = new SKRectI(0, 0, 4, 4);
uint rowBytes = 4;
var format = SKMaskFormat.A8;
var mask = SKMask.Create(maskBuffer, bounds, rowBytes, format);
srcBmp.InstallMaskPixels(mask);
pixels = srcBmp.Pixels;
Assert.AreEqual(128, pixels[0].Alpha);
Assert.AreEqual(127, pixels[1].Alpha);
Assert.AreEqual(126, pixels[2].Alpha);
Assert.AreEqual(125, pixels[3].Alpha);
Assert.AreEqual(101, pixels[4].Alpha);
Assert.AreEqual(102, pixels[5].Alpha);
Assert.AreEqual(103, pixels[6].Alpha);
Assert.AreEqual(104, pixels[7].Alpha);
Assert.AreEqual(96, pixels[8].Alpha);
Assert.AreEqual(95, pixels[9].Alpha);
Assert.AreEqual(94, pixels[10].Alpha);
Assert.AreEqual(93, pixels[11].Alpha);
Assert.AreEqual(72, pixels[12].Alpha);
Assert.AreEqual(73, pixels[13].Alpha);
Assert.AreEqual(74, pixels[14].Alpha);
Assert.AreEqual(75, pixels[15].Alpha);
mask.FreeImage();
}
