/// <summary>
/// data must be RGBA8888 byte array
/// </summary>
/// <param name="data"></param>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="targetFormat"></param>
/// <returns></returns>
public static byte[] Compress(byte[] data, int width, int height, CompressionFormat targetFormat)
{
try {
QFormat format = QFormat.Q_FORMAT_RGBA_8UI;
switch (targetFormat)
{
case CompressionFormat.AtcRgb:
format = QFormat.Q_FORMAT_ATC_RGB;
break;
case CompressionFormat.AtcRgbaExplicitAlpha:
format = QFormat.Q_FORMAT_ATC_RGBA_EXPLICIT_ALPHA;
break;
case CompressionFormat.AtcRgbaInterpolatedAlpha:
format = QFormat.Q_FORMAT_ATC_RGBA_INTERPOLATED_ALPHA;
break;
case CompressionFormat.Etc1:
format = QFormat.Q_FORMAT_ETC1_RGB8;
break;
case CompressionFormat.Etc2Rgba:
format = QFormat.Q_FORMAT_ETC2_RGBA8;
break;
case CompressionFormat.Astc8:
format = QFormat.Q_FORMAT_ASTC_8;
break;
case CompressionFormat.Astc16:
format = QFormat.Q_FORMAT_ASTC_16;
break;
case CompressionFormat.DXT1:
format = QFormat.Q_FORMAT_S3TC_DXT1_RGB;
break;
case CompressionFormat.DXT3:
format = QFormat.Q_FORMAT_S3TC_DXT3_RGBA;
break;
case CompressionFormat.DXT5:
format = QFormat.Q_FORMAT_S3TC_DXT5_RGBA;
break;
}
uint uwidth = (uint)width;
uint uheight = (uint)height;
var src = NativeMethods.CreateEmptyQonvertImage();
var dst = NativeMethods.CreateEmptyQonvertImage();
var handle = GCHandle.Alloc(data, GCHandleType.Pinned);
try {
src.nWidth = uwidth;
src.nHeight = uheight;
src.nFormat = (uint)QFormat.Q_FORMAT_RGBA_8UI;
src.pData = handle.AddrOfPinnedObject();
dst.nWidth = uwidth;
dst.nHeight = uheight;
dst.nFormat = (uint)format;
dst.pData = IntPtr.Zero;
if (NativeMethods.Qonvert(ref src, ref dst, IntPtr.Zero) != (uint)TReturnCode.Q_SUCCESS)
{
throw new Exception(string.Format("Error getting compressed data size for {0} Compression", format.ToString()));
}
byte[] compressed = new byte[dst.nDataSize];
var compressedHandle = GCHandle.Alloc(compressed, GCHandleType.Pinned);
try {
dst.pData = compressedHandle.AddrOfPinnedObject();
if (NativeMethods.Qonvert(ref src, ref dst, IntPtr.Zero) != (uint)TReturnCode.Q_SUCCESS)
{
throw new Exception(string.Format("Error getting compressed data size for {0} Compression", format.ToString()));
}
return(compressed);
}
finally {
compressedHandle.Free();
}
}
finally {
handle.Free();
}
}
catch (DllNotFoundException ex) {
throw new DllNotFoundException(string.Format("{0} See Documentation for more details.", ex.Message));
}
}
public static byte[] Compress(byte[] data, int width, int height, CompressionFormat targetFormat)
{
try {
QFormat format = QFormat.Q_FORMAT_RGBA_8UI;
switch (targetFormat)
{
case CompressionFormat.AtcRgb:
format = QFormat.Q_FORMAT_ATC_RGB;
break;
case CompressionFormat.AtcRgbaExplicitAlpha:
format = QFormat.Q_FORMAT_ATC_RGBA_EXPLICIT_ALPHA;
break;
case CompressionFormat.AtcRgbaInterpolatedAlpha:
format = QFormat.Q_FORMAT_ATC_RGBA_INTERPOLATED_ALPHA;
break;
case CompressionFormat.Etc1:
format = QFormat.Q_FORMAT_ETC1_RGB8;
break;
case CompressionFormat.Etc2Rgba:
format = QFormat.Q_FORMAT_ETC2_RGBA8;
break;
}
uint uwidth = (uint)width;
uint uheight = (uint)height;
var src = NativeMethods.CreateEmptyQonvertImage();
var dst = NativeMethods.CreateEmptyQonvertImage();
var handle = GCHandle.Alloc(data, GCHandleType.Pinned);
try {
src.nWidth = uwidth;
src.nHeight = uheight;
src.nFormat = (uint)QFormat.Q_FORMAT_RGBA_8UI;
src.pData = handle.AddrOfPinnedObject();
dst.nWidth = uwidth;
dst.nHeight = uheight;
dst.nFormat = (uint)format;
dst.pData = IntPtr.Zero;
if (NativeMethods.Qonvert(ref src, ref dst, IntPtr.Zero) != (uint)TReturnCode.Q_SUCCESS)
{
throw new Exception("Error getting compressed data size for ATC Compression");
}
byte[] compressed = new byte[dst.nDataSize];
var compressedHandle = GCHandle.Alloc(compressed, GCHandleType.Pinned);
try {
dst.pData = compressedHandle.AddrOfPinnedObject();
if (NativeMethods.Qonvert(ref src, ref dst, IntPtr.Zero) != (uint)TReturnCode.Q_SUCCESS)
{
throw new Exception("Error getting compressed texture ATC Compression");
}
return(compressed);
} finally {
compressedHandle.Free();
}
} finally {
handle.Free();
}
} catch (DllNotFoundException ex) {
throw new DllNotFoundException(string.Format("{0}{1}See Documentation for more details {1}{2}", ex.Message,
Environment.NewLine,
"https://github.com/infinitespace-studios/ATI.TextureConverter/blob/master/README.md"));
}
}
