protected override void OnSetRenderInfo(PropertyBasedEffectConfigToken newToken, RenderArgs dstArgs, RenderArgs srcArgs)
{
HistogramRgb histogram = new HistogramRgb();
histogram.UpdateHistogram(srcArgs.Surface, this.EnvironmentParameters.GetSelection(dstArgs.Bounds));
this.levels = histogram.MakeLevelsAuto();
base.OnSetRenderInfo(newToken, dstArgs, srcArgs);
}
public override void Render(EffectConfigToken parameters, RenderArgs dstArgs, RenderArgs srcArgs,
Rectangle[] rois, int startIndex, int length)
{
if (levels == null)
{
HistogramRgb histogram = new HistogramRgb();
histogram.UpdateHistogram(srcArgs.Surface, this.EnvironmentParameters.GetSelection(dstArgs.Bounds));
levels = histogram.MakeLevelsAuto();
}
if (levels.isValid)
{
levels.Apply(dstArgs.Surface, srcArgs.Surface, rois, startIndex, length);
}
}