void DemandCreateBloomRenderTarget(ICanvasAnimatedControl sender)
{
float w = (float)sender.Size.Width;
float h = (float)sender.Size.Height;
// Early-out if we already have a rendertarget of the correct size.
// Compare sizes as pixels rather than dips to avoid rounding artifacts.
if (bloomRenderTarget != null &&
bloomRenderTarget.SizeInPixels.Width == sender.ConvertDipsToPixels(w) &&
bloomRenderTarget.SizeInPixels.Height == sender.ConvertDipsToPixels(h))
{
return;
}
// Destroy the old rendertarget.
if (bloomRenderTarget != null)
{
bloomRenderTarget.Dispose();
}
// Create the new rendertarget.
bloomRenderTarget = new CanvasRenderTarget(sender, w, h);
// Configure the bloom effect to use this new rendertarget.
extractBrightAreas.Source = bloomRenderTarget;
bloomResult.Background = bloomRenderTarget;
}
int DipsToPixelSize(ICanvasAnimatedControl sender, float dips)
{
System.Diagnostics.Debug.Assert(dips > 0);
return Math.Max(sender.ConvertDipsToPixels(dips, CanvasDpiRounding.Round), 1);
}
int DipsToPixelSize(ICanvasAnimatedControl sender, float dips)
{
System.Diagnostics.Debug.Assert(dips > 0);
return(Math.Max(sender.ConvertDipsToPixels(dips, CanvasDpiRounding.Round), 1));
}
