public override void Prepare(DrawInfo info)
{
// Prepare inputs:
base.Prepare(info);
if (info.Mode == SurfaceDrawMode.CPU)
{
// Prerender now! Bitmap node will sample it as needed.
int width = info.ImageX;
int height = info.ImageY;
// Set buffer etc:
Setup(info);
// Setup secondary buffer:
if (Buffer2 == null || Buffer2.Length != Buffer.Length)
{
Buffer2 = new Color[Buffer.Length];
}
Width = width;
Height = height;
// Render into buffer2:
SourceModule.DrawCPU(info, Buffer2);
// Get radii:
int hRadius = (int)(width * RadiusX.GetValue(0.0, 0.0));
int vRadius = (int)(height * RadiusY.GetValue(0.0, 0.0));
// Do percentile filter now:
PercentileFilter.Filter(Buffer2, Buffer, width, height, hRadius, vRadius, Percent);
}
}
public static void Filter(Color[] inPixels, Color[] outPixels, int width, int height, int hRadius, int vRadius, TextureNode percentile)
{
// Histogram buffer (essentially a horizontal "slice" of the image):
ushort[] histograms = new ushort[256 * width];
// Red
PercentileFilter.Filter(inPixels, outPixels, width, height, hRadius, vRadius, 0, histograms, percentile);
// Green
PercentileFilter.Filter(inPixels, outPixels, width, height, hRadius, vRadius, 1, histograms, percentile);
// Blue
PercentileFilter.Filter(inPixels, outPixels, width, height, hRadius, vRadius, 2, histograms, percentile);
// Alpha
PercentileFilter.Filter(inPixels, outPixels, width, height, hRadius, vRadius, 3, histograms, percentile);
}
