public IFilter CreateFilter(IFilter original, IFilter initial)
{
IFilter lab, linear, result = initial;
var inputSize = original.OutputSize;
var currentSize = original.OutputSize;
var targetSize = TargetSize();
var Diff = CompileShader("Diff.hlsl");
var SuperRes = CompileShader("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");
var NEDI = new Shiandow.Nedi.Nedi
{
AlwaysDoubleImage = false,
Centered = false,
LumaConstants = new[] { 1.0f, 0.0f, 0.0f }
};
var Consts = new[] { Strength, Sharpness, AntiAliasing, AntiRinging };
// Skip if downscaling
if (targetSize.Width <= inputSize.Width && targetSize.Height <= inputSize.Height)
{
return(initial);
}
// Initial scaling
lab = new ShaderFilter(GammaToLab, initial);
original = new ShaderFilter(GammaToLab, original);
for (int i = 1; i <= Passes; i++)
{
IFilter res, diff;
bool useBilinear = (upscaler is Scaler.Bilinear) || (FirstPassOnly && !(i == 1));
// Calculate size
if (i == Passes || NoIntermediates)
{
currentSize = targetSize;
}
else
{
currentSize = CalculateSize(currentSize, targetSize, i);
}
// Resize
if (i == 1 && UseNEDI)
{
lab = new ResizeFilter(lab + NEDI, currentSize, m_ShiftedScaler, m_ShiftedScaler, m_ShiftedScaler);
}
else
{
lab = new ResizeFilter(lab, currentSize, upscaler, downscaler);
}
// Downscale and Subtract
linear = new ShaderFilter(LabToLinear, lab);
res = new ResizeFilter(linear, inputSize, upscaler, downscaler); // Downscale result
diff = new ShaderFilter(Diff, res, original); // Compare with original
// Scale difference back
if (!useBilinear)
{
diff = new ResizeFilter(diff, currentSize, upscaler, downscaler);
}
// Update result
lab = new ShaderFilter(SuperRes, useBilinear, Consts, lab, diff, original);
result = new ShaderFilter(LabToGamma, lab);
}
return(result);
}
public IFilter CreateFilter(IFilter original, IFilter initial)
{
IFilter lab, linear, result = initial;
var inputSize = original.OutputSize;
var currentSize = original.OutputSize;
var targetSize = TargetSize();
var Diff = CompileShader("Diff.hlsl");
var SuperRes = CompileShader("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");
var NEDI = new Shiandow.Nedi.Nedi
{
AlwaysDoubleImage = false,
Centered = false,
LumaConstants = new[] { 1.0f, 0.0f, 0.0f }
};
var Consts = new[] { Strength, Sharpness, AntiAliasing, AntiRinging };
// Initial scaling
lab = new ShaderFilter(GammaToLab, initial);
original = new ShaderFilter(GammaToLab, original);
for (int i = 1; i <= Passes; i++)
{
IFilter res, diff;
bool useBilinear = (upscaler is Scaler.Bilinear) || (FirstPassOnly && !(i == 1));
// Calculate size
if (i == Passes)
{
currentSize = targetSize;
}
else
{
currentSize = CalculateSize(currentSize, targetSize, i);
}
// Resize and Convert
if (i == 1 && UseNEDI)
{
var nedi = lab + NEDI;
lab = new ResizeFilter(nedi, currentSize, m_ShiftedScaler, m_ShiftedScaler);
if (currentSize == nedi.OutputSize)
{
// TODO: implement a proper way to shift NEDI without resizing
lab = new ResizeFilter(lab, currentSize);
}
}
else
{
lab = new ResizeFilter(lab, currentSize);
}
linear = new ShaderFilter(LabToLinear, lab);
// Calculate difference
res = new ResizeFilter(linear, inputSize, upscaler, downscaler); // Downscale result
diff = new ShaderFilter(Diff, res, original); // Compare with original
if (!useBilinear)
{
diff = new ResizeFilter(diff, currentSize, upscaler, downscaler); // Scale to output size
}
// Update result
lab = new ShaderFilter(SuperRes, useBilinear, Consts, lab, diff, original);
result = new ShaderFilter(LabToGamma, lab);
}
return(result);
}