/// <summary>
/// Generates a full set of mipmaps for the texture.
/// </summary>
/// <param name="overwriteExistingMipmaps">true if the existing mipmap set is replaced with the new set; false otherwise.</param>
public virtual void GenerateMipmaps(bool overwriteExistingMipmaps)
{
// If we already have mipmaps and we're not supposed to overwrite
// them then return without any generation.
if (!overwriteExistingMipmaps && faces.Any(f => f.Count > 1))
{
return;
}
// Generate the mips for each face.
foreach (var face in faces)
{
// Remove any existing mipmaps.
var faceBitmap = face[0];
face.Clear();
face.Add(faceBitmap);
var faceType = faceBitmap.GetType();
int width = faceBitmap.Width;
int height = faceBitmap.Height;
while (width > 1 && height > 1)
{
width /= 2;
height /= 2;
var mip = (BitmapContent)Activator.CreateInstance(faceType, new object[] { width, height });
BitmapContent.Copy(faceBitmap, mip);
face.Add(mip);
}
}
}
static void Compress(Type targetType, TextureContent content, bool generateMipMaps)
{
var wh = new object[2];
if (generateMipMaps)
{
for (int i = 0; i < content.Faces.Count; ++i)
{
// Only generate mipmaps if there are none already
if (content.Faces[i].Count == 1)
{
var src = content.Faces[i][0];
var w = src.Width;
var h = src.Height;
content.Faces[i].Clear();
wh[0] = w;
wh[1] = h;
var dest = (BitmapContent)Activator.CreateInstance(targetType, wh);
BitmapContent.Copy(src, dest);
content.Faces[i].Add(dest);
while (w > 1 && h > 1)
{
if (w > 1)
{
w = w >> 1;
}
if (h > 1)
{
h = h >> 1;
}
wh[0] = w;
wh[1] = h;
dest = (BitmapContent)Activator.CreateInstance(targetType, wh);
BitmapContent.Copy(src, dest);
content.Faces[i].Add(dest);
}
}
else
{
// Convert the existing mipmaps
var chain = content.Faces[i];
for (int j = 0; j < chain.Count; ++j)
{
var src = chain[j];
wh[0] = src.Width;
wh[1] = src.Height;
var dest = (BitmapContent)Activator.CreateInstance(targetType, wh);
BitmapContent.Copy(src, dest);
chain[j] = dest;
}
}
}
}
else
{
// Converts all existing faces and mipmaps
content.ConvertBitmapType(targetType);
}
}
protected override bool TryCopyFrom(BitmapContent sourceBitmap, Rectangle sourceRegion, Rectangle destinationRegion)
{
SurfaceFormat sourceFormat;
if (!sourceBitmap.TryGetFormat(out sourceFormat))
{
return(false);
}
// A shortcut for copying the entire bitmap to another bitmap of the same type and format
if (SurfaceFormat.RgbEtc1 == sourceFormat && (sourceRegion == new Rectangle(0, 0, Width, Height)) && sourceRegion == destinationRegion)
{
SetPixelData(sourceBitmap.GetPixelData());
return(true);
}
// Destination region copy is not yet supported
if (destinationRegion != new Rectangle(0, 0, Width, Height))
{
return(false);
}
// If the source is not Vector4 or requires resizing, send it through BitmapContent.Copy
if (!(sourceBitmap is PixelBitmapContent <Vector4>) || sourceRegion.Width != destinationRegion.Width || sourceRegion.Height != destinationRegion.Height)
{
try
{
BitmapContent.Copy(sourceBitmap, sourceRegion, this, destinationRegion);
return(true);
}
catch (InvalidOperationException)
{
return(false);
}
}
// Create the texture object in the PVR library
var sourceData = sourceBitmap.GetPixelData();
var rgba32F = (PixelFormat)0x2020202061626772; // static const PixelType PVRStandard32PixelType = PixelType('r', 'g', 'b', 'a', 32, 32, 32, 32);
using (var pvrTexture = PVRTexture.CreateTexture(sourceData, (uint)sourceBitmap.Width, (uint)sourceBitmap.Height, 1,
rgba32F, true, VariableType.Float, ColourSpace.lRGB))
{
// Resize the bitmap if needed
if ((sourceBitmap.Width != Width) || (sourceBitmap.Height != Height))
{
pvrTexture.Resize((uint)Width, (uint)Height, 1, ResizeMode.Cubic);
}
pvrTexture.Transcode(PixelFormat.ETC1, VariableType.UnsignedByte, ColourSpace.lRGB /*, CompressorQuality.ETCMediumPerceptual, true*/);
var texDataSize = pvrTexture.GetTextureDataSize(0);
var texData = new byte[texDataSize];
pvrTexture.GetTextureData(texData, texDataSize);
SetPixelData(texData);
}
return(true);
}
// Once arranging is complete, copies each glyph to its chosen position in the single larger output bitmap.
static BitmapContent CopyGlyphsToOutput(List <ArrangedGlyph> glyphs, int width, int height)
{
var output = new PixelBitmapContent <Color>(width, height);
foreach (var glyph in glyphs)
{
var sourceGlyph = glyph.Source;
var sourceRegion = sourceGlyph.Subrect;
var destinationRegion = new Rectangle(glyph.X + 1, glyph.Y + 1, sourceRegion.Width, sourceRegion.Height);
BitmapContent.Copy(sourceGlyph.Bitmap, sourceRegion, output, destinationRegion);
sourceGlyph.Bitmap = output;
sourceGlyph.Subrect = destinationRegion;
}
return(output);
}
/// <summary>
/// Converts all bitmaps for this texture to a different format.
/// </summary>
/// <param name="newBitmapType">Type being converted to. The new type must be a subclass of BitmapContent, such as PixelBitmapContent or DxtBitmapContent.</param>
public void ConvertBitmapType(Type newBitmapType)
{
if (newBitmapType == null)
{
throw new ArgumentNullException("newBitmapType");
}
if (!newBitmapType.IsSubclassOf(typeof(BitmapContent)))
{
throw new ArgumentException(string.Format("Type '{0}' is not a subclass of BitmapContent.", newBitmapType));
}
if (newBitmapType.IsAbstract)
{
throw new ArgumentException(string.Format("Type '{0}' is abstract and cannot be allocated.", newBitmapType));
}
if (newBitmapType.ContainsGenericParameters)
{
throw new ArgumentException(string.Format("Type '{0}' contains generic parameters and cannot be allocated.", newBitmapType));
}
if (newBitmapType.GetConstructor(new Type[2] {
typeof(int), typeof(int)
}) == null)
{
throw new ArgumentException(string.Format("Type '{0} does not have a constructor with signature (int, int) and cannot be allocated.",
newBitmapType));
}
foreach (var mipChain in faces)
{
for (var i = 0; i < mipChain.Count; i++)
{
var src = mipChain[i];
if (src.GetType() != newBitmapType)
{
var dst = (BitmapContent)Activator.CreateInstance(newBitmapType, new object[] { src.Width, src.Height });
BitmapContent.Copy(src, dst);
mipChain[i] = dst;
}
}
}
}
internal static BitmapContent Resize(this BitmapContent bitmap, int newWidth, int newHeight)
{
BitmapContent src = bitmap;
SurfaceFormat format;
src.TryGetFormat(out format);
if (format != SurfaceFormat.Vector4)
{
var v4 = new PixelBitmapContent <Vector4>(src.Width, src.Height);
BitmapContent.Copy(src, v4);
src = v4;
}
// Convert to FreeImage bitmap
var bytes = src.GetPixelData();
var fi = FreeImage.ConvertFromRawBits(bytes, FREE_IMAGE_TYPE.FIT_RGBAF, src.Width, src.Height, SurfaceFormat.Vector4.GetSize() * src.Width, 128, 0, 0, 0, true);
// Resize
var newfi = FreeImage.Rescale(fi, newWidth, newHeight, FREE_IMAGE_FILTER.FILTER_BICUBIC);
FreeImage.UnloadEx(ref fi);
// Convert back to PixelBitmapContent<Vector4>
src = new PixelBitmapContent <Vector4>(newWidth, newHeight);
bytes = new byte[SurfaceFormat.Vector4.GetSize() * newWidth * newHeight];
FreeImage.ConvertToRawBits(bytes, newfi, SurfaceFormat.Vector4.GetSize() * newWidth, 128, 0, 0, 0, true);
src.SetPixelData(bytes);
FreeImage.UnloadEx(ref newfi);
// Convert back to source type if required
if (format != SurfaceFormat.Vector4)
{
var s = (BitmapContent)Activator.CreateInstance(bitmap.GetType(), new object[] { newWidth, newHeight });
BitmapContent.Copy(src, s);
src = s;
}
return(src);
}
protected override bool TryCopyFrom(BitmapContent sourceBitmap, Rectangle sourceRegion, Rectangle destinationRegion)
{
SurfaceFormat sourceFormat;
if (!sourceBitmap.TryGetFormat(out sourceFormat))
{
return(false);
}
SurfaceFormat format;
TryGetFormat(out format);
// A shortcut for copying the entire bitmap to another bitmap of the same type and format
if (format == sourceFormat && (sourceRegion == new Rectangle(0, 0, Width, Height)) && sourceRegion == destinationRegion)
{
SetPixelData(sourceBitmap.GetPixelData());
return(true);
}
// TODO: Add a XNA unit test to see what it does
// my guess is that this is invalid for DXT.
//
// Destination region copy is not yet supported
if (destinationRegion != new Rectangle(0, 0, Width, Height))
{
return(false);
}
// If the source is not Vector4 or requires resizing, send it through BitmapContent.Copy
if (!(sourceBitmap is PixelBitmapContent <Vector4>) || sourceRegion.Width != destinationRegion.Width || sourceRegion.Height != destinationRegion.Height)
{
try
{
BitmapContent.Copy(sourceBitmap, sourceRegion, this, destinationRegion);
return(true);
}
catch (InvalidOperationException)
{
return(false);
}
}
// NVTT wants 8bit data in BGRA format.
var colorBitmap = new PixelBitmapContent <Color>(sourceBitmap.Width, sourceBitmap.Height);
BitmapContent.Copy(sourceBitmap, colorBitmap);
var sourceData = colorBitmap.GetPixelData();
var dataHandle = GCHandle.Alloc(sourceData, GCHandleType.Pinned);
AlphaMode alphaMode;
Format outputFormat;
var alphaDither = false;
switch (format)
{
case SurfaceFormat.Dxt1:
case SurfaceFormat.Dxt1SRgb:
{
bool hasTransparency;
PrepareNVTT_DXT1(sourceData, out hasTransparency);
outputFormat = hasTransparency ? Format.DXT1a : Format.DXT1;
alphaMode = hasTransparency ? AlphaMode.Transparency : AlphaMode.None;
alphaDither = true;
break;
}
case SurfaceFormat.Dxt3:
case SurfaceFormat.Dxt3SRgb:
{
PrepareNVTT(sourceData);
outputFormat = Format.DXT3;
alphaMode = AlphaMode.Transparency;
break;
}
case SurfaceFormat.Dxt5:
case SurfaceFormat.Dxt5SRgb:
{
PrepareNVTT(sourceData);
outputFormat = Format.DXT5;
alphaMode = AlphaMode.Transparency;
break;
}
default:
throw new InvalidOperationException("Invalid DXT surface format!");
}
// Do all the calls to the NVTT wrapper within this handler
// so we properly clean up if things blow up.
try
{
var dataPtr = dataHandle.AddrOfPinnedObject();
var inputOptions = new InputOptions();
inputOptions.SetTextureLayout(TextureType.Texture2D, colorBitmap.Width, colorBitmap.Height, 1);
inputOptions.SetMipmapData(dataPtr, colorBitmap.Width, colorBitmap.Height, 1, 0, 0);
inputOptions.SetMipmapGeneration(false);
inputOptions.SetGamma(1.0f, 1.0f);
inputOptions.SetAlphaMode(alphaMode);
var compressionOptions = new CompressionOptions();
compressionOptions.SetFormat(outputFormat);
compressionOptions.SetQuality(Quality.Normal);
// TODO: This isn't working which keeps us from getting the
// same alpha dither behavior on DXT1 as XNA.
//
// See https://github.com/MonoGame/MonoGame/issues/6259
//
//if (alphaDither)
//compressionOptions.SetQuantization(false, false, true);
var outputOptions = new OutputOptions();
outputOptions.SetOutputHeader(false);
outputOptions.SetOutputOptionsOutputHandler(NvttBeginImage, NvttWriteImage, NvttEndImage);
var dxtCompressor = new Compressor();
dxtCompressor.Compress(inputOptions, compressionOptions, outputOptions);
}
finally
{
dataHandle.Free();
}
return(true);
}
protected override bool TryCopyTo(BitmapContent destinationBitmap, Rectangle sourceRegion, Rectangle destinationRegion)
{
SurfaceFormat destinationFormat;
if (!destinationBitmap.TryGetFormat(out destinationFormat))
{
return(false);
}
// A shortcut for copying the entire bitmap to another bitmap of the same type and format
if (_format == destinationFormat && (sourceRegion == new Rectangle(0, 0, Width, Height)) && sourceRegion == destinationRegion)
{
destinationBitmap.SetPixelData(GetPixelData());
return(true);
}
// If the destination is not Vector4 or requires resizing, send it through BitmapContent.Copy
if (!(destinationBitmap is PixelBitmapContent <Vector4>) || sourceRegion.Width != destinationRegion.Width || sourceRegion.Height != destinationRegion.Height)
{
try
{
BitmapContent.Copy(this, sourceRegion, destinationBitmap, destinationRegion);
return(true);
}
catch (InvalidOperationException)
{
return(false);
}
}
// Convert to a Vector4 format
var dest = destinationBitmap as PixelBitmapContent <Vector4>;
if (default(T) is IPackedVector)
{
Parallel.For(0, sourceRegion.Height, (y) =>
{
var row = GetRow(sourceRegion.Top + y);
for (int x = 0; x < sourceRegion.Width; ++x)
{
dest.SetPixel(destinationRegion.Left + x, destinationRegion.Top + y, ((IPackedVector)row[sourceRegion.Left + x]).ToVector4());
}
});
}
else
{
var converter = new Vector4Converter() as IVector4Converter <T>;
// If no converter could be created, converting from this format is not supported
if (converter == null)
{
return(false);
}
Parallel.For(0, sourceRegion.Height, (y) =>
{
var row = GetRow(sourceRegion.Top + y);
for (int x = 0; x < sourceRegion.Width; ++x)
{
dest.SetPixel(destinationRegion.Left + x, destinationRegion.Top + y, converter.ToVector4(row[sourceRegion.Left + x]));
}
});
}
return(true);
}
protected override bool TryCopyFrom(BitmapContent sourceBitmap, Rectangle sourceRegion, Rectangle destinationRegion)
{
SurfaceFormat sourceFormat;
if (!sourceBitmap.TryGetFormat(out sourceFormat))
{
return(false);
}
SurfaceFormat format;
TryGetFormat(out format);
// A shortcut for copying the entire bitmap to another bitmap of the same type and format
if (format == sourceFormat && (sourceRegion == new Rectangle(0, 0, Width, Height)) && sourceRegion == destinationRegion)
{
SetPixelData(sourceBitmap.GetPixelData());
return(true);
}
// Destination region copy is not yet supported
if (destinationRegion != new Rectangle(0, 0, Width, Height))
{
return(false);
}
// If the source is not Vector4 or requires resizing, send it through BitmapContent.Copy
if (!(sourceBitmap is PixelBitmapContent <Vector4>) || sourceRegion.Width != destinationRegion.Width || sourceRegion.Height != destinationRegion.Height)
{
try
{
BitmapContent.Copy(sourceBitmap, sourceRegion, this, destinationRegion);
return(true);
}
catch (InvalidOperationException)
{
return(false);
}
}
// Convert to full colour 32-bit format. Floating point would be preferred for processing, but it appears the ATICompressor does not support this
var colorBitmap = new PixelBitmapContent <Color>(sourceRegion.Width, sourceRegion.Height);
BitmapContent.Copy(sourceBitmap, sourceRegion, colorBitmap, new Rectangle(0, 0, colorBitmap.Width, colorBitmap.Height));
sourceBitmap = colorBitmap;
ATICompressor.CompressionFormat targetFormat;
switch (format)
{
case SurfaceFormat.RgbaAtcExplicitAlpha:
targetFormat = ATICompressor.CompressionFormat.AtcRgbaExplicitAlpha;
break;
case SurfaceFormat.RgbaAtcInterpolatedAlpha:
targetFormat = ATICompressor.CompressionFormat.AtcRgbaInterpolatedAlpha;
break;
default:
return(false);
}
var sourceData = sourceBitmap.GetPixelData();
var compressedData = ATICompressor.Compress(sourceData, Width, Height, targetFormat);
SetPixelData(compressedData);
return(true);
}
protected override bool TryCopyFrom(BitmapContent sourceBitmap, Rectangle sourceRegion, Rectangle destinationRegion)
{
SurfaceFormat sourceFormat;
if (!sourceBitmap.TryGetFormat(out sourceFormat))
{
return(false);
}
SurfaceFormat format;
TryGetFormat(out format);
// A shortcut for copying the entire bitmap to another bitmap of the same type and format
if (format == sourceFormat && (sourceRegion == new Rectangle(0, 0, Width, Height)) && sourceRegion == destinationRegion)
{
SetPixelData(sourceBitmap.GetPixelData());
return(true);
}
// Destination region copy is not yet supported
if (destinationRegion != new Rectangle(0, 0, Width, Height))
{
return(false);
}
// If the source is not Vector4 or requires resizing, send it through BitmapContent.Copy
if (!(sourceBitmap is PixelBitmapContent <Vector4>) || sourceRegion.Width != destinationRegion.Width || sourceRegion.Height != destinationRegion.Height)
{
try
{
BitmapContent.Copy(sourceBitmap, sourceRegion, this, destinationRegion);
return(true);
}
catch (InvalidOperationException)
{
return(false);
}
}
//SquishFlags targetFormat = SquishFlags.ColourClusterFit;
Format outputFormat = Format.DXT1;
switch (format)
{
case SurfaceFormat.Dxt1:
outputFormat = Format.DXT1;
break;
case SurfaceFormat.Dxt1SRgb:
outputFormat = Format.DXT1;
break;
case SurfaceFormat.Dxt3:
outputFormat = Format.DXT3;
break;
case SurfaceFormat.Dxt3SRgb:
outputFormat = Format.DXT3;
break;
case SurfaceFormat.Dxt5:
outputFormat = Format.DXT5;
break;
case SurfaceFormat.Dxt5SRgb:
outputFormat = Format.DXT5;
break;
default:
return(false);
}
// libsquish requires RGBA8888
var colorBitmap = new PixelBitmapContent <Color>(sourceBitmap.Width, sourceBitmap.Height);
BitmapContent.Copy(sourceBitmap, colorBitmap);
var sourceData = colorBitmap.GetPixelData();
/*
* var dataSize = Squish.GetStorageRequirements(colorBitmap.Width, colorBitmap.Height, targetFormat);
* var data = new byte[dataSize];
* var metric = new float[] { 1.0f, 1.0f, 1.0f };
* Squish.CompressImage(sourceData, colorBitmap.Width, colorBitmap.Height, data, targetFormat, metric);
* SetPixelData(data);
*/
var dxtCompressor = new Compressor();
var inputOptions = new InputOptions();
if (outputFormat != Format.DXT1)
{
inputOptions.SetAlphaMode(AlphaMode.Premultiplied);
}
else
{
inputOptions.SetAlphaMode(AlphaMode.None);
}
inputOptions.SetTextureLayout(TextureType.Texture2D, colorBitmap.Width, colorBitmap.Height, 1);
// Small hack here. NVTT wants 8bit data in BGRA. Flip the B and R channels
// again here.
GraphicsUtil.BGRAtoRGBA(sourceData);
var dataHandle = GCHandle.Alloc(sourceData, GCHandleType.Pinned);
try
{
var dataPtr = dataHandle.AddrOfPinnedObject();
inputOptions.SetMipmapData(dataPtr, colorBitmap.Width, colorBitmap.Height, 1, 0, 0);
inputOptions.SetMipmapGeneration(false);
inputOptions.SetGamma(1.0f, 1.0f);
var outputOptions = new OutputOptions();
outputOptions.SetOutputHeader(false);
var handler = new DxtDataHandler(this);
outputOptions.SetOutputHandler(handler.BeginImage, handler.WriteData);
var compressionOptions = new CompressionOptions();
compressionOptions.SetFormat(outputFormat);
compressionOptions.SetQuality(Quality.Normal);
dxtCompressor.Compress(inputOptions, compressionOptions, outputOptions);
}
finally
{
dataHandle.Free();
}
return(true);
}
