internal static unsafe byte[] Compress(byte[] data, ref TextureFormat format, Vector2I dimensions, bool HasAlpha, bool IsPunchThroughAlpha, bool IsMasky, bool HasR, bool HasG, bool HasB)
{
if (!BlockCompressionFunctional)
{
return(null);
}
var oldSpriteFormat = format;
FlipColorBytes(data);
try {
var bitmapData = data;
using var compressor = new Compressor();
compressor.Input.AlphaMode = (HasAlpha) ? AlphaMode.Premultiplied : AlphaMode.None;
compressor.Input.GenerateMipmaps = false;
var textureFormat =
(!HasAlpha) ?
TextureFormat.NoAlpha :
((false && IsPunchThroughAlpha && Config.Resample.BlockCompression.Quality != CompressionQuality.Fastest) ?
TextureFormat.WithPunchthroughAlpha :
(IsMasky ?
TextureFormat.WithHardAlpha :
TextureFormat.WithAlpha));
compressor.Compression.Format = textureFormat;
compressor.Compression.Quality = Config.Resample.BlockCompression.Quality;
compressor.Compression.SetQuantization(true, true, IsPunchThroughAlpha);
{
compressor.Compression.GetColorWeights(out var r, out var g, out var b, out var a);
a = HasAlpha ? (a * 20.0f) : 0.0f;
// Relative luminance of the various channels.
r = HasR ? (r * 0.2126f) : 0.0f;
g = HasG ? (g * 0.7152f) : 0.0f;
b = HasB ? (b * 0.0722f) : 0.0f;
compressor.Compression.SetColorWeights(r, g, b, a);
}
compressor.Output.IsSRGBColorSpace = true;
compressor.Output.OutputHeader = false;
//public MipData (int width, int height, int rowPitch, IntPtr data, bool ownData = true)
fixed(byte *p = bitmapData)
{
using var mipData = new MipData(dimensions.Width, dimensions.Height, dimensions.Width * sizeof(int), (IntPtr)p, false);
compressor.Input.SetData(mipData, true);
var memoryBuffer = new byte[((SurfaceFormat)textureFormat).SizeBytes(dimensions.Area)];
using var stream = memoryBuffer.Stream();
if (compressor.Process(stream))
{
format = textureFormat;
return(memoryBuffer);
}
else
{
Debug.WarningLn($"Failed to use {(CompressionFormat)textureFormat} compression: " + compressor.LastErrorString);
}
}
}
catch (Exception ex) {
ex.PrintWarning();
BlockCompressionFunctional = false;
}
format = oldSpriteFormat;
FlipColorBytes(data);
return(null);
}
internal static unsafe bool Encode(
ReadOnlySpan <Color8> data,
ref TextureFormat format,
Vector2I dimensions,
bool hasAlpha,
bool isPunchthroughAlpha,
bool isMasky,
bool hasR,
bool hasG,
bool hasB,
out PinnedSpan <byte> result
)
{
if (!BlockCompressionFunctional)
{
result = default;
return(false);
}
var oldSpriteFormat = format;
try {
using var compressor = new Compressor();
compressor.Input.AlphaMode = (hasAlpha) ? AlphaMode.Premultiplied : AlphaMode.None;
compressor.Input.GenerateMipmaps = false;
var textureFormat = BlockEncoderCommon.GetBestTextureFormat(hasAlpha, isPunchthroughAlpha, isMasky);
compressor.Compression.Format = textureFormat;
compressor.Compression.Quality = Config.Resample.BlockCompression.Quality;
compressor.Compression.SetQuantization(true, true, isPunchthroughAlpha);
{
compressor.Compression.GetColorWeights(out var r, out var g, out var b, out var a);
a = hasAlpha ? (a * 20.0f) : 0.0f;
// Relative luminance of the various channels.
r = hasR ? (r * 0.2126f) : 0.0f;
g = hasG ? (g * 0.7152f) : 0.0f;
b = hasB ? (b * 0.0722f) : 0.0f;
compressor.Compression.SetColorWeights(r, g, b, a);
}
compressor.Output.IsSRGBColorSpace = true;
compressor.Output.OutputHeader = false;
//public MipData (int width, int height, int rowPitch, IntPtr data, bool ownData = true)
fixed(byte *p = data.Cast <byte>())
{
using var mipData = new MipData(dimensions.Width, dimensions.Height, dimensions.Width * sizeof(int), (IntPtr)p, false);
compressor.Input.SetData(mipData, false);
var memoryBuffer = GC.AllocateUninitializedArray <byte>(((SurfaceFormat)textureFormat).SizeBytes(dimensions.Area), pinned: true);
using var stream = memoryBuffer.Stream();
if (compressor.Process(stream))
{
format = textureFormat;
result = memoryBuffer;
return(true);
}
else
{
Debug.Warning($"Failed to use {(CompressionFormat)textureFormat} compression: " + compressor.LastErrorString);
Debug.Warning($"Dimensions: [{dimensions.Width}, {dimensions.Height}]");
}
}
}
catch (Exception ex) {
ex.PrintWarning();
BlockCompressionFunctional = false;
}
format = oldSpriteFormat;
result = default;
return(false);
}
