public override void ReadData(BinaryReader stream, IDictionary <object, object> userdata, int totalSize)
{
int array = 1, mipmap = 1;
if (userdata.TryGetValue(KEY_ARRAY, out var arrayObj))
{
array = (int)arrayObj;
}
if (userdata.TryGetValue(KEY_MIPMAP, out var mipmapObj))
{
mipmap = (int)mipmapObj;
}
if (!userdata.TryGetValue(KEY_WIDTH, out var widthObj) ||
!userdata.TryGetValue(KEY_HEIGHT, out var heightObj) ||
!userdata.TryGetValue(KEY_FORMAT, out var formatObj))
{
throw new ArgumentException("No enough user data for width, height and format");
}
int width = (int)widthObj;
int height = (int)heightObj;
TextureFormat format = (TextureFormat)formatObj;
int aligh = format.GetAlignSize();
int pixelSize = format.GetBitsPerPixel();
//var raw = stream.ReadBytes(totalSize);
var raw = new byte[array][][];
for (int a = 0; a < array; a++)
{
raw[a] = new byte[mipmap][];
int imageWidth = width;
int imageHeight = height;
for (int m = 0; m < mipmap; m++)
{
int alignedWidth = imageWidth;
int alignedHeight = imageHeight;
if (alignedWidth % aligh != 0)
{
alignedWidth += aligh - (alignedWidth % aligh);
}
if (alignedHeight % aligh != 0)
{
alignedHeight += aligh - (alignedHeight % aligh);
}
raw[a][m] = stream.ReadBytes((alignedWidth * alignedHeight * pixelSize) / 8);
imageWidth = Math.Max(imageWidth >> 1, 1);
imageHeight = Math.Max(imageHeight >> 1, 1);
}
}
RawImage = raw;
PrimaryRawImage = raw[0][0];
}
public override void ReadData(BinaryReader stream, IDictionary <object, object> userdata, int totalSize)
{
int array = 1, mipmap = 1;
if (userdata.TryGetValue(KEY_ARRAY, out var arrayObj))
{
array = (int)arrayObj;
}
if (userdata.TryGetValue(KEY_MIPMAP, out var mipmapObj))
{
mipmap = (int)mipmapObj;
}
if (!userdata.TryGetValue(KEY_WIDTH, out var widthObj) ||
!userdata.TryGetValue(KEY_HEIGHT, out var heightObj) ||
!userdata.TryGetValue(KEY_FORMAT, out var formatObj))
{
throw new ArgumentException("No enough user data for width, height and format");
}
int width = (int)widthObj;
int height = (int)heightObj;
TextureFormat format = (TextureFormat)formatObj;
int aligh = format.GetAlignSize();
int pixelSize = format.GetBitsPerPixel();
//var raw = stream.ReadBytes(totalSize);
var raw = new byte[array][][];
for (int a = 0; a < array; a++)
{
raw[a] = new byte[mipmap][];
int imageWidth = width;
int imageHeight = height;
for (int m = 0; m < mipmap; m++)
{
int alignedWidth = imageWidth;
int alignedHeight = imageHeight;
if (alignedWidth % aligh != 0)
{
alignedWidth += aligh - (alignedWidth % aligh);
}
if (alignedHeight % aligh != 0)
{
alignedHeight += aligh - (alignedHeight % aligh);
}
// prevent from overflow for mega textures or underflow for very small mipmap
// should be alignedWidth * alignedHeight * pixelSize / 8
int readSize = alignedWidth * alignedHeight;
// if readSize & 7 != 0, then it cannot be divided exactly
if (readSize >= 8 && (readSize & 7) == 0)
{
readSize = readSize / 8 * pixelSize;
}
else
{
readSize = readSize * pixelSize / 8;
}
raw[a][m] = stream.ReadBytes(readSize);
imageWidth = Math.Max(imageWidth >> 1, 1);
imageHeight = Math.Max(imageHeight >> 1, 1);
}
}
RawImage = raw;
PrimaryRawImage = raw[0][0];
}
