/// gets suitability rating for format and takes preferred format into account
public int GetFormatRating(GliFormat format, GliFormat preferredFormat)
{
var rating = GetFormatRating(format);
var preferredPixelType = preferredFormat.GetDataType();
var pixelType = format.GetDataType();
bool isSrgb = preferredPixelType == PixelDataType.Srgb;
bool hasRgb = preferredFormat.HasRgb();
if (format == preferredFormat)
{
rating += 150;
}
// keep srgb specifier
if (isSrgb == (format.GetDataType() == PixelDataType.Srgb))
{
rating += 200;
}
else
{
rating -= 200;
}
// small bonus for same datatype
if (preferredPixelType == pixelType)
{
rating += 5;
}
// small bonus for rgb match
if (hasRgb == format.HasRgb())
{
rating += 15;
}
// small bonus for high precision
if (!preferredFormat.IsLessThan8Bit() && !format.IsLessThan8Bit())
{
rating += 20;
}
// small bonus for kept compression
if (preferredFormat.IsCompressed() && format.IsCompressed())
{
rating += 10;
}
return(rating);
}
private static bool IsIntegerPrecisionFormat(GliFormat format)
{
switch (format.GetDataType())
{
case PixelDataType.SInt:
case PixelDataType.UInt:
case PixelDataType.SScaled:
case PixelDataType.UScaled:
return(true);
}
return(false);
}
// gets a suitability rating for the format based on the statistic values
public int GetFormatRating(GliFormat format)
{
const int alphaMissWeight = 1000; // penalty if alpha channel is required but missing
const int alphaMatchWeight = 5; // bonus for same alpha state
const int signWeight = 10;
const int unormWeight = 300;
// determine basic properties of image
bool hasAlpha = HasAlpha;
bool isUnormed = Average.Min >= 0.0f && Average.Max <= 1.0f &&
Alpha.Min >= 0.0f && Alpha.Max <= 1.0f;
bool isSigned = Average.Min < 0.0f;
int rating = 0;
// is alpha required?
if (hasAlpha && !format.HasAlpha())
{
rating -= alphaMissWeight; // alpha should be present if image needs alpha
}
else if (hasAlpha == format.HasAlpha())
{
rating += alphaMatchWeight; // alpha state matching
}
// is a signed format required?
var pixelType = format.GetDataType();
if (isSigned && !pixelType.IsSigned())
{
rating -= signWeight; // signed format is required
}
else if (isSigned == pixelType.IsSigned())
{
rating += signWeight;
}
// range 0 1?
if (!isUnormed && pixelType == PixelDataType.UNorm) // unorm is not sufficient
{
rating -= unormWeight;
}
else if (!isUnormed && pixelType == PixelDataType.Srgb) // maybe tonemapping to srgb? better than unorm probably
{
rating -= unormWeight / 10;
}
//else if (isUnormed == pixelType.IsUnormed())
// rating += unormWeight;
return(rating);
}
/// gets suitability rating for format and takes preferred format into account
public int GetFormatRating(GliFormat format, GliFormat preferredFormat)
{
var rating = GetFormatRating(format);
var preferredPixelType = preferredFormat.GetDataType();
var pixelType = format.GetDataType();
bool isSrgb = preferredPixelType == PixelDataType.Srgb;
bool hasRgb = preferredFormat.HasRgb();
if (format == preferredFormat)
{
rating += 150;
}
// keep srgb specifier
if (isSrgb == (pixelType == PixelDataType.Srgb))
{
rating += 200;
}
else
{
// prefer srgb formats over unorm etc. when converting from hdr to ldr
if (!preferredFormat.IsAtMost8bit() && !preferredPixelType.IsUnormed() && pixelType == PixelDataType.Srgb)
{
rating -= 50;
}
else
{
rating -= 200;
}
}
// small bonus for same datatype
if (preferredPixelType == pixelType)
{
rating += 5;
}
// small bonus for rgb match
if (hasRgb == format.HasRgb())
{
rating += 15;
}
// small bonus for high precision
if (!preferredFormat.IsLessThan8Bit() && !format.IsLessThan8Bit())
{
rating += 20;
}
// small bonus for kept compression
if (preferredFormat.IsCompressed() && format.IsCompressed())
{
rating += 10;
}
// try to keep hdr formats
if (!preferredFormat.IsAtMost8bit() && !format.IsAtMost8bit())
{
// keep unorm property
if (preferredPixelType.IsUnormed() == pixelType.IsUnormed())
{
rating += 50;
}
}
return(rating);
}
public ExportViewModel(ModelsEx models, string extension, GliFormat preferredFormat, string filename, bool is3D, DefaultStatistics stats)
{
this.models = models;
this.extension = extension;
this.filename = filename;
this.is3D = is3D;
this.usedFormat = models.Export.Formats.First(fmt => fmt.Extension == extension);
models.Display.IsExporting = true;
Quality = models.Settings.LastQuality;
// init layers
for (var i = 0; i < models.Images.NumLayers; ++i)
{
AvailableLayers.Add(new ListItemViewModel <int>
{
Cargo = i,
Name = "Layer " + i
});
}
selectedLayer = AvailableLayers[models.Export.Layer];
Debug.Assert(selectedLayer.Cargo == models.Export.Layer);
// init mipmaps
for (var i = 0; i < models.Images.NumMipmaps; ++i)
{
AvailableMipmaps.Add(new ListItemViewModel <int>
{
Cargo = i,
Name = "Mipmap " + i
});
}
selectedMipmap = AvailableMipmaps[models.Export.Mipmap];
Debug.Assert(selectedMipmap.Cargo == models.Export.Mipmap);
// all layer option for ktx and dds
if (models.Images.NumLayers > 1 && (extension == "ktx" || extension == "dds"))
{
AvailableLayers.Add(new ListItemViewModel <int>
{
Cargo = -1,
Name = "All Layer"
});
selectedLayer = AvailableLayers.Last();
models.Export.Layer = selectedLayer.Cargo;
}
// all mipmaps option for ktx and dds
if (models.Images.NumMipmaps > 1 && (extension == "ktx" || extension == "dds"))
{
AvailableMipmaps.Add(new ListItemViewModel <int>
{
Cargo = -1,
Name = "All Mipmaps"
});
selectedMipmap = AvailableMipmaps.Last();
models.Export.Mipmap = selectedMipmap.Cargo;
}
// init available pixel data types
var usedPixelTypes = new SortedSet <PixelDataType>();
foreach (var format in usedFormat.Formats)
{
// exclude some formats for 3d export
if (is3D && format.IsExcludedFrom3DExport())
{
continue;
}
allFormats.Add(new ListItemViewModel <GliFormat>
{
Cargo = format,
Name = format.ToString(),
ToolTip = format.GetDescription()
});
formatRatings.Add(stats.GetFormatRating(format, preferredFormat));
usedPixelTypes.Add(format.GetDataType());
}
if (usedPixelTypes.Count > 1)
{
AvailableDataTypes.Add(new ListItemViewModel <PixelDataType>
{
Cargo = PixelDataType.Undefined,
Name = "All"
});
}
var preferredPixelType = preferredFormat.GetDataType();
foreach (var usedPixelType in usedPixelTypes)
{
AvailableDataTypes.Add(new ListItemViewModel <PixelDataType>
{
Cargo = usedPixelType,
Name = usedPixelType.ToString(),
ToolTip = usedPixelType.GetDescription()
});
if (usedPixelType == preferredPixelType)
{
SelectedDataType = AvailableDataTypes.Last();
}
}
if (SelectedDataType == null)
{
SelectedDataType = AvailableDataTypes[0];
}
// assert that those were were set by SelectedDataType
Debug.Assert(AvailableFormats != null);
Debug.Assert(SelectedFormat != null);
// enable quality
if (extension == "jpg")
{
hasQualityValue = true;
nonSrgbExportWarnings = true;
}
else if (extension == "bmp")
{
nonSrgbExportWarnings = true;
}
else
{
SetKtxDdsQuality();
}
models.Export.PropertyChanged += ExportOnPropertyChanged;
if (models.Export.CropEndX == 0 && models.Export.CropEndY == 0 && models.Export.CropEndZ == 0)
{
// assume cropping was not set
SetMaxCropping();
}
}