protected static Bitmap GetBitmapFromDDS_DXT3(SubStream data, int offset, int width, int height, bool IsDXT2, out bool hasalpha)
{
Bitmap bmp = new Bitmap(width, height, IsDXT2 ? PixelFormat.Format32bppPArgb : PixelFormat.Format32bppArgb);
byte[] bmpraw = new byte[width * height * 4];
hasalpha = false;
for (int y = 0; y < height; y += 4)
{
for (int x = 0; x < width; x += 4)
{
ulong alpharaw = data.GetUInt64(offset);
byte[,] alphadata = new byte[4, 4];
for (int i = 0; i < 16; i++)
{
alphadata[i % 4, i / 4] = (byte)(((alpharaw >> (i * 4)) & 0x0F) * 0x11);
}
Color[,] colourdata = GetDXT1ColourBlock(data, offset + 8, true);
for (int v = 0; v < 4; v++)
{
for (int u = 0; u < 4; u++)
{
if (x + u < width && y + v < height)
{
int i = ((y + v) * width + (x + u)) * 4;
bmpraw[i] = colourdata[u, v].B;
bmpraw[i + 1] = colourdata[u, v].G;
bmpraw[i + 2] = colourdata[u, v].R;
bmpraw[i + 3] = alphadata[u, v];
hasalpha |= alphadata[u, v] != 255;
}
}
}
offset += 16;
}
}
BitmapData bmpdata = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.WriteOnly, IsDXT2 ? PixelFormat.Format32bppPArgb : PixelFormat.Format32bppArgb);
for (int y = 0; y < height; y++)
{
Marshal.Copy(bmpraw, y * width * 4, bmpdata.Scan0 + y * bmpdata.Stride, width * 4);
}
bmp.UnlockBits(bmpdata);
return(bmp);
}
protected static Bitmap GetBitmapFromDDS_RAW(SubStream Data, int Offset, int Width, int Height, int Pitch, int RGBBitCount, uint RedMask, uint GreenMask, uint BlueMask, uint AlphaMask, out bool hasalpha, out bool isargb32)
{
uint RGBBitMask = (uint)((1L << RGBBitCount) - 1);
int RedShift = MostSignificantBitPosition(RedMask) - 7;
int GreenShift = MostSignificantBitPosition(GreenMask) - 7;
int BlueShift = MostSignificantBitPosition(BlueMask) - 7;
int AlphaShift = MostSignificantBitPosition(AlphaMask) - 7;
int RedBits = RedMask == 0 ? 0 : MostSignificantBitPosition(RedMask) - LeastSignificantBitPosition(RedMask) + 1;
int GreenBits = GreenMask == 0 ? 0 : MostSignificantBitPosition(GreenMask) - LeastSignificantBitPosition(GreenMask) + 1;
int BlueBits = BlueMask == 0 ? 0 : MostSignificantBitPosition(BlueMask) - LeastSignificantBitPosition(BlueMask) + 1;
int AlphaBits = AlphaMask == 0 ? 0 : MostSignificantBitPosition(AlphaMask) - LeastSignificantBitPosition(AlphaMask) + 1;
hasalpha = false;
isargb32 = RedBits <= 8 && GreenBits <= 8 && BlueBits <= 8 && AlphaBits <= 8;
Bitmap bmp = new Bitmap(Width, Height, PixelFormat.Format32bppArgb);
byte[] bmpraw = new byte[Width * Height * 4];
for (int y = 0; y < Height; y++)
{
for (int x = 0; x < Width; x++)
{
int w = (4 - ((RGBBitCount + 7) / 8));
int bitpos = y * Pitch * 8 + x * RGBBitCount;
int i = ((bitpos + RGBBitCount - 1) / 8 - 7);
int b = (bitpos - i * 8);
int o = (y * Width + x) * 4;
uint v = (uint)((Data.GetUInt64(i + 128) >> b) & RGBBitMask);
bmpraw[o + 0] = GetMaskShiftVal(v, BlueMask, BlueShift, 0x00);
bmpraw[o + 1] = GetMaskShiftVal(v, GreenMask, GreenShift, 0x00);
bmpraw[o + 2] = GetMaskShiftVal(v, RedMask, RedShift, 0x00);
bmpraw[o + 3] = GetMaskShiftVal(v, AlphaMask, AlphaShift, 0xFF);
hasalpha = bmpraw[o + 3] != 255;
}
}
BitmapData bmpdata = bmp.LockBits(new Rectangle(0, 0, Width, Height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
for (int y = 0; y < Height; y++)
{
Marshal.Copy(bmpraw, y * Width * 4, bmpdata.Scan0 + y * bmpdata.Stride, Width * 4);
}
bmp.UnlockBits(bmpdata);
return(bmp);
}
protected static Bitmap GetBitmapFromDDS_RAW(SubStream Data, int Offset, int Width, int Height, int Pitch, int RGBBitCount, uint RedMask, uint GreenMask, uint BlueMask, uint AlphaMask, out bool hasalpha, out bool isargb32)
{
uint RGBBitMask = (uint)((1L << RGBBitCount) - 1);
int RedShift = MostSignificantBitPosition(RedMask) - 7;
int GreenShift = MostSignificantBitPosition(GreenMask) - 7;
int BlueShift = MostSignificantBitPosition(BlueMask) - 7;
int AlphaShift = MostSignificantBitPosition(AlphaMask) - 7;
int RedBits = RedMask == 0 ? 0 : MostSignificantBitPosition(RedMask) - LeastSignificantBitPosition(RedMask) + 1;
int GreenBits = GreenMask == 0 ? 0 : MostSignificantBitPosition(GreenMask) - LeastSignificantBitPosition(GreenMask) + 1;
int BlueBits = BlueMask == 0 ? 0 : MostSignificantBitPosition(BlueMask) - LeastSignificantBitPosition(BlueMask) + 1;
int AlphaBits = AlphaMask == 0 ? 0 : MostSignificantBitPosition(AlphaMask) - LeastSignificantBitPosition(AlphaMask) + 1;
hasalpha = false;
isargb32 = RedBits <= 8 && GreenBits <= 8 && BlueBits <= 8 && AlphaBits <= 8;
Bitmap bmp = new Bitmap(Width, Height, PixelFormat.Format32bppArgb);
byte[] bmpraw = new byte[Width * Height * 4];
for (int y = 0; y < Height; y++)
{
for (int x = 0; x < Width; x++)
{
int w = (4 - ((RGBBitCount + 7) / 8));
int bitpos = y * Pitch * 8 + x * RGBBitCount;
int i = ((bitpos + RGBBitCount - 1) / 8 - 7);
int b = (bitpos - i * 8);
int o = (y * Width + x) * 4;
uint v = (uint)((Data.GetUInt64(i + 128) >> b) & RGBBitMask);
bmpraw[o + 0] = GetMaskShiftVal(v, BlueMask, BlueShift, 0x00);
bmpraw[o + 1] = GetMaskShiftVal(v, GreenMask, GreenShift, 0x00);
bmpraw[o + 2] = GetMaskShiftVal(v, RedMask, RedShift, 0x00);
bmpraw[o + 3] = GetMaskShiftVal(v, AlphaMask, AlphaShift, 0xFF);
hasalpha = bmpraw[o + 3] != 255;
}
}
BitmapData bmpdata = bmp.LockBits(new Rectangle(0, 0, Width, Height), ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
for (int y = 0; y < Height; y++)
{
Marshal.Copy(bmpraw, y * Width * 4, bmpdata.Scan0 + y * bmpdata.Stride, Width * 4);
}
bmp.UnlockBits(bmpdata);
return bmp;
}
protected static Bitmap GetBitmapFromDDS_DXT5(SubStream data, int offset, int width, int height, bool IsDXT4, out bool hasalpha)
{
Bitmap bmp = new Bitmap(width, height, IsDXT4 ? PixelFormat.Format32bppPArgb : PixelFormat.Format32bppArgb);
byte[] bmpraw = new byte[width * height * 4];
hasalpha = false;
for (int y = 0; y < height; y += 4)
{
for (int x = 0; x < width; x += 4)
{
byte[] a = new byte[8];
a[0] = data.GetByte(offset);
a[1] = data.GetByte(offset + 1);
if (a[0] > a[1])
{
a[2] = (byte)(((int)a[0] * 6 + a[1] * 1 + 3) / 7);
a[3] = (byte)(((int)a[0] * 5 + a[1] * 2 + 3) / 7);
a[4] = (byte)(((int)a[0] * 4 + a[1] * 3 + 3) / 7);
a[5] = (byte)(((int)a[0] * 3 + a[1] * 4 + 3) / 7);
a[6] = (byte)(((int)a[0] * 2 + a[1] * 5 + 3) / 7);
a[7] = (byte)(((int)a[0] * 1 + a[1] * 6 + 3) / 7);
}
else
{
a[2] = (byte)(((int)a[0] * 4 + a[1] * 1 + 2) / 5);
a[3] = (byte)(((int)a[0] * 3 + a[1] * 2 + 2) / 5);
a[4] = (byte)(((int)a[0] * 2 + a[1] * 3 + 2) / 5);
a[5] = (byte)(((int)a[0] * 1 + a[1] * 4 + 2) / 5);
a[6] = 0x00;
a[7] = 0xFF;
}
ulong alphasel = data.GetUInt64(offset) >> 16;
byte[,] alphadata = new byte[4, 4];
for (int i = 0; i < 16; i++)
{
alphadata[i % 4, i / 4] = a[(alphasel >> (i * 3)) & 7];
}
Color[,] colourdata = GetDXT1ColourBlock(data, offset + 8, true);
for (int v = 0; v < 4; v++)
{
for (int u = 0; u < 4; u++)
{
if (x + u < width && y + v < height)
{
int i = ((y + v) * width + (x + u)) * 4;
bmpraw[i] = colourdata[u, v].B;
bmpraw[i + 1] = colourdata[u, v].G;
bmpraw[i + 2] = colourdata[u, v].R;
bmpraw[i + 3] = alphadata[u, v];
hasalpha |= alphadata[u, v] != 255;
}
}
}
offset += 16;
}
}
BitmapData bmpdata = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.WriteOnly, IsDXT4 ? PixelFormat.Format32bppPArgb : PixelFormat.Format32bppArgb);
for (int y = 0; y < height; y++)
{
Marshal.Copy(bmpraw, y * width * 4, bmpdata.Scan0 + y * bmpdata.Stride, width * 4);
}
bmp.UnlockBits(bmpdata);
return bmp;
}
protected static Bitmap GetBitmapFromDDS_DXT3(SubStream data, int offset, int width, int height, bool IsDXT2, out bool hasalpha)
{
Bitmap bmp = new Bitmap(width, height, IsDXT2 ? PixelFormat.Format32bppPArgb : PixelFormat.Format32bppArgb);
byte[] bmpraw = new byte[width * height * 4];
hasalpha = false;
for (int y = 0; y < height; y += 4)
{
for (int x = 0; x < width; x += 4)
{
ulong alpharaw = data.GetUInt64(offset);
byte[,] alphadata = new byte[4, 4];
for (int i = 0; i < 16; i++)
{
alphadata[i % 4, i / 4] = (byte)(((alpharaw >> (i * 4)) & 0x0F) * 0x11);
}
Color[,] colourdata = GetDXT1ColourBlock(data, offset + 8, true);
for (int v = 0; v < 4; v++)
{
for (int u = 0; u < 4; u++)
{
if (x + u < width && y + v < height)
{
int i = ((y + v) * width + (x + u)) * 4;
bmpraw[i] = colourdata[u, v].B;
bmpraw[i + 1] = colourdata[u, v].G;
bmpraw[i + 2] = colourdata[u, v].R;
bmpraw[i + 3] = alphadata[u, v];
hasalpha |= alphadata[u, v] != 255;
}
}
}
offset += 16;
}
}
BitmapData bmpdata = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.WriteOnly, IsDXT2 ? PixelFormat.Format32bppPArgb : PixelFormat.Format32bppArgb);
for (int y = 0; y < height; y++)
{
Marshal.Copy(bmpraw, y * width * 4, bmpdata.Scan0 + y * bmpdata.Stride, width * 4);
}
bmp.UnlockBits(bmpdata);
return bmp;
}
protected static Bitmap GetBitmapFromDDS_DXT5(SubStream data, int offset, int width, int height, bool IsDXT4, out bool hasalpha)
{
Bitmap bmp = new Bitmap(width, height, IsDXT4 ? PixelFormat.Format32bppPArgb : PixelFormat.Format32bppArgb);
byte[] bmpraw = new byte[width * height * 4];
hasalpha = false;
for (int y = 0; y < height; y += 4)
{
for (int x = 0; x < width; x += 4)
{
byte[] a = new byte[8];
a[0] = data.GetByte(offset);
a[1] = data.GetByte(offset + 1);
if (a[0] > a[1])
{
a[2] = (byte)(((int)a[0] * 6 + a[1] * 1 + 3) / 7);
a[3] = (byte)(((int)a[0] * 5 + a[1] * 2 + 3) / 7);
a[4] = (byte)(((int)a[0] * 4 + a[1] * 3 + 3) / 7);
a[5] = (byte)(((int)a[0] * 3 + a[1] * 4 + 3) / 7);
a[6] = (byte)(((int)a[0] * 2 + a[1] * 5 + 3) / 7);
a[7] = (byte)(((int)a[0] * 1 + a[1] * 6 + 3) / 7);
}
else
{
a[2] = (byte)(((int)a[0] * 4 + a[1] * 1 + 2) / 5);
a[3] = (byte)(((int)a[0] * 3 + a[1] * 2 + 2) / 5);
a[4] = (byte)(((int)a[0] * 2 + a[1] * 3 + 2) / 5);
a[5] = (byte)(((int)a[0] * 1 + a[1] * 4 + 2) / 5);
a[6] = 0x00;
a[7] = 0xFF;
}
ulong alphasel = data.GetUInt64(offset) >> 16;
byte[,] alphadata = new byte[4, 4];
for (int i = 0; i < 16; i++)
{
alphadata[i % 4, i / 4] = a[(alphasel >> (i * 3)) & 7];
}
Color[,] colourdata = GetDXT1ColourBlock(data, offset + 8, true);
for (int v = 0; v < 4; v++)
{
for (int u = 0; u < 4; u++)
{
if (x + u < width && y + v < height)
{
int i = ((y + v) * width + (x + u)) * 4;
bmpraw[i] = colourdata[u, v].B;
bmpraw[i + 1] = colourdata[u, v].G;
bmpraw[i + 2] = colourdata[u, v].R;
bmpraw[i + 3] = alphadata[u, v];
hasalpha |= alphadata[u, v] != 255;
}
}
}
offset += 16;
}
}
BitmapData bmpdata = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.WriteOnly, IsDXT4 ? PixelFormat.Format32bppPArgb : PixelFormat.Format32bppArgb);
for (int y = 0; y < height; y++)
{
Marshal.Copy(bmpraw, y * width * 4, bmpdata.Scan0 + y * bmpdata.Stride, width * 4);
}
bmp.UnlockBits(bmpdata);
return(bmp);
}