protected bool Equals(DdsPixelFormat other)
{
return(Size == other.Size &&
Flags == other.Flags &&
FourCc == other.FourCc &&
RgbBitCount == other.RgbBitCount &&
RBitMask == other.RBitMask &&
GBitMask == other.GBitMask &&
BBitMask == other.BBitMask &&
ABitMask == other.ABitMask);
}
private static DdsPixelFormat DdsPfDx(int fourCc)
{
DdsPixelFormat pixelFormat = new DdsPixelFormat
{
Size = DefaultSize,
Flags = DdsPixelFormatFlag.FourCc,
FourCc = fourCc
};
return(pixelFormat);
}
public static byte[] ConvertData(byte[] sourceBuffer, int height, int width, DxgiFormat dxgiFormat)
{
if (sourceBuffer == null)
{
return(null);
}
var inputStream = new MemoryStream(sourceBuffer);
byte[] targetBuffer = new byte[sourceBuffer.Length];
byte[] blockBuffer = new byte[64];
int heightBlock = height / 4;
int widthBlock = width / 4;
int bytesPerPixel = DdsPixelFormat.DxgiToBytesPerPixel(dxgiFormat) * 2;
for (int y = 0; y < heightBlock; y++)
{
for (int x = 0; x < widthBlock; x++)
{
int mx = x;
int my = y;
if (widthBlock > 1 && heightBlock > 1)
{
MapBlockPosition(x, y, widthBlock, 2, out mx, out my);
}
if (widthBlock > 2 && heightBlock > 2)
{
MapBlockPosition(mx, my, widthBlock, 4, out mx, out my);
}
if (widthBlock > 4 && heightBlock > 4)
{
MapBlockPosition(mx, my, widthBlock, 8, out mx, out my);
}
inputStream.Read(blockBuffer, 0, bytesPerPixel);
int destinationIndex = bytesPerPixel * (my * widthBlock + mx);
Array.Copy(blockBuffer, 0, targetBuffer, destinationIndex, bytesPerPixel);
}
}
return(targetBuffer);
}
