public override IFilter CreateFilter(IResizeableFilter sourceFilter)
{
var upscaler = new Scaler.Custom(new GaussianBlur(0.75), ScalerTaps.Four, false);
var downscaler = new Scaler.HwBilinear(); // Good enough (?)
int bits = 8;
switch (Renderer.InputFormat)
{
case FrameBufferInputFormat.P010: bits = 10; break;
case FrameBufferInputFormat.Y410: bits = 10; break;
case FrameBufferInputFormat.P016: bits = 16; break;
case FrameBufferInputFormat.Y416: bits = 16; break;
case FrameBufferInputFormat.Rgb24: return(sourceFilter);
case FrameBufferInputFormat.Rgb32: return(sourceFilter);
}
if (bits > maxbitdepth)
{
return(sourceFilter);
}
var inputsize = sourceFilter.OutputSize;
var size = inputsize;
var current = sourceFilter.ConvertToYuv();
var factor = 2.0;
var downscaled = new Stack <IFilter>();
downscaled.Push(current);
// Generate downscaled images
for (int i = 0; i < 8; i++)
{
size = new Size((int)Math.Floor(size.Width / factor), (int)Math.Floor(size.Height / factor));
if (size.Width == 0 || size.Height == 0)
{
break;
}
current = new ResizeFilter(current, size, upscaler, downscaler);
downscaled.Push(current);
}
var deband = downscaled.Pop();
while (downscaled.Count > 0)
{
deband = new ShaderFilter(CompileShader("Deband.hlsl"), true,
new[]
{
(1 << bits) - 1,
advancedMode ? threshold : DEFAULT_THRESHOLD,
advancedMode ? margin : DEFAULT_MARGIN
},
downscaled.Pop(), deband);
}
return(deband.ConvertToRgb());
}
public override IFilter CreateFilter(IResizeableFilter sourceFilter)
{
IFilter yuv;
var chromaSize = Renderer.ChromaSize;
var targetSize = sourceFilter.OutputSize;
var Diff = CompileShader("SuperChromaRes/Diff.hlsl");
var CopyLuma = CompileShader("SuperChromaRes/CopyLuma.hlsl");
var CopyChroma = CompileShader("SuperChromaRes/CopyChroma.hlsl");
var SuperRes = CompileShader("SuperChromaRes/SuperRes.hlsl");
var GammaToLab = CompileShader("GammaToLab.hlsl");
var LabToGamma = CompileShader("LabToGamma.hlsl");
var LinearToGamma = CompileShader("LinearToGamma.hlsl");
var GammaToLinear = CompileShader("GammaToLinear.hlsl");
var LabToLinear = CompileShader("LabToLinear.hlsl");
var LinearToLab = CompileShader("LinearToLab.hlsl");
// Skip if downscaling
if (targetSize.Width <= chromaSize.Width && targetSize.Height <= chromaSize.Height)
{
return(sourceFilter);
}
// Original values
var yInput = new YSourceFilter();
var uInput = new USourceFilter();
var vInput = new VSourceFilter();
float[] YuvConsts = new float[2];
switch (Renderer.Colorimetric)
{
case YuvColorimetric.Auto: return(sourceFilter);
case YuvColorimetric.FullRangePc601: YuvConsts = new[] { 0.114f, 0.299f, 0.0f }; break;
case YuvColorimetric.FullRangePc709: YuvConsts = new[] { 0.0722f, 0.2126f, 0.0f }; break;
case YuvColorimetric.FullRangePc2020: YuvConsts = new[] { 0.0593f, 0.2627f, 0.0f }; break;
case YuvColorimetric.ItuBt601: YuvConsts = new[] { 0.114f, 0.299f, 1.0f }; break;
case YuvColorimetric.ItuBt709: YuvConsts = new[] { 0.0722f, 0.2126f, 1.0f }; break;
case YuvColorimetric.ItuBt2020: YuvConsts = new[] { 0.0593f, 0.2627f, 1.0f }; break;
}
var Consts = new[] { Strength, Sharpness, AntiAliasing, AntiRinging,
Softness, YuvConsts[0], YuvConsts[1] };
yuv = sourceFilter.ConvertToYuv();
for (int i = 1; i <= Passes; i++)
{
IFilter res, diff, linear;
bool useBilinear = (upscaler is Scaler.Bilinear) || (FirstPassOnly && !(i == 1));
// Compare to chroma
linear = new ShaderFilter(GammaToLinear, yuv.ConvertToRgb());
res = new ResizeFilter(linear, chromaSize, upscaler, downscaler);
res = new ShaderFilter(LinearToGamma, res).ConvertToYuv();
diff = new ShaderFilter(Diff, YuvConsts, res, uInput, vInput);
if (!useBilinear)
{
diff = new ResizeFilter(diff, targetSize, upscaler, downscaler); // Scale to output size
}
// Update result
yuv = new ShaderFilter(SuperRes, useBilinear, Consts, yuv, diff, uInput, vInput);
}
return(yuv.ConvertToRgb());
}