public void Export(Stream stream)
{
BinaryWriter writer = new BinaryWriter(stream);
byte[] buffer = null;
switch (m_TextureFormat)
{
case TextureFormat.DXT1:
case TextureFormat.DXT5:
byte[] dds_header = DDS.CreateHeader(m_Width, m_Height, 32, m_MipMap ? 2 : 0, m_TextureFormat);
writer.Write(dds_header);
buffer = image_data;
break;
case TextureFormat.RGB24:
byte[] tga_header = TGA.CreateHeader((ushort)m_Width, (ushort)m_Height, 24);
writer.Write(tga_header);
buffer = new byte[image_data.Length];
for (int i = 0, j = 2; j < m_CompleteImageSize; i += 3, j += 3)
{
byte b = image_data[j];
buffer[j] = image_data[i];
buffer[i] = b;
buffer[i + 1] = image_data[i + 1];
}
break;
case TextureFormat.ARGB32:
tga_header = TGA.CreateHeader((ushort)m_Width, (ushort)m_Height, 32);
writer.Write(tga_header);
buffer = new byte[image_data.Length];
for (int i = 0, j = 3, k = 1, l = 2; j < m_CompleteImageSize; i += 4, j += 4, k += 4, l += 4)
{
byte b = image_data[j];
buffer[j] = image_data[i];
buffer[i] = b;
b = image_data[l];
buffer[l] = image_data[k];
buffer[k] = b;
}
break;
case TextureFormat.Alpha8:
tga_header = TGA.CreateHeader((ushort)m_Width, (ushort)m_Height, 8);
writer.Write(tga_header);
buffer = (byte[])image_data.Clone();
break;
case TextureFormat.RGBA32:
tga_header = TGA.CreateHeader((ushort)m_Width, (ushort)m_Height, 32);
writer.Write(tga_header);
buffer = (byte[])image_data.Clone();
break;
default:
throw new Exception("Unhandled Texture2D format: " + m_TextureFormat);
}
writer.Write(buffer);
}