| public DecodeDXT45 ( int height, int width, byte SourceData ) : byte[] | ||
| height | int | The height. |
| width | int | The width. |
| SourceData | byte | The source data. |
| return | byte[] | |
public byte[] DecodeDXT45(int height, int width, byte[] SourceData)
{
byte[] DestData;
ImageLib.RGBA_COLOR_STRUCT[] Color = new ImageLib.RGBA_COLOR_STRUCT[4];
int i;
ImageLib.RGBA_COLOR_STRUCT CColor;
int CData;
int ChunksPerHLine = width / 4;
//ImageLib.RGBA_COLOR_STRUCT zeroColor = new ImageLib.RGBA_COLOR_STRUCT();
DestData = new byte[(width * height) * 4];
if (ChunksPerHLine == 0)
{
ChunksPerHLine += 1;
}
for (i = 0; i < (width * height); i += 16)
{
Color[0] = il.short_to_rgba(SourceData[i + 8] | (SourceData[i + 9] << 8));
Color[1] = il.short_to_rgba(SourceData[i + 10] | (SourceData[i + 11] << 8));
Color[2] = il.GradientColors(Color[0], Color[1]);
Color[3] = il.GradientColors(Color[1], Color[0]);
CData = (SourceData[i + 12] << 0) | (SourceData[i + 13] << 8) | (SourceData[i + 14] << 16) |
(SourceData[i + 15] << 24);
byte[] Alpha = new byte[8];
Alpha[0] = SourceData[i];
Alpha[1] = SourceData[i + 1];
// Do the alphas
if (Alpha[0] > Alpha[1])
{
// 8-alpha block: derive the other six alphas.
// Bit code 000 = alpha_0, 001 = alpha_1, others are interpolated.
Alpha[2] = (byte)((6 * Alpha[0] + 1 * Alpha[1] + 3) / 7); // bit code 010
Alpha[3] = (byte)((5 * Alpha[0] + 2 * Alpha[1] + 3) / 7); // bit code 011
Alpha[4] = (byte)((4 * Alpha[0] + 3 * Alpha[1] + 3) / 7); // bit code 100
Alpha[5] = (byte)((3 * Alpha[0] + 4 * Alpha[1] + 3) / 7); // bit code 101
Alpha[6] = (byte)((2 * Alpha[0] + 5 * Alpha[1] + 3) / 7); // bit code 110
Alpha[7] = (byte)((1 * Alpha[0] + 6 * Alpha[1] + 3) / 7); // bit code 111
}
else
{
// 6-alpha block.
// Bit code 000 = alpha_0, 001 = alpha_1, others are interpolated.
Alpha[2] = (byte)((4 * Alpha[0] + 1 * Alpha[1] + 2) / 5); // Bit code 010
Alpha[3] = (byte)((3 * Alpha[0] + 2 * Alpha[1] + 2) / 5); // Bit code 011
Alpha[4] = (byte)((2 * Alpha[0] + 3 * Alpha[1] + 2) / 5); // Bit code 100
Alpha[5] = (byte)((1 * Alpha[0] + 4 * Alpha[1] + 2) / 5); // Bit code 101
Alpha[6] = 0; // Bit code 110
Alpha[7] = 255; // Bit code 111
}
// Byte Alpha
// 0 Alpha_0
// 1 Alpha_1
// 2 (0)(2) (2 LSBs), (0)(1), (0)(0)
// 3 (1)(1) (1 LSB), (1)(0), (0)(3), (0)(2) (1 MSB)
// 4 (1)(3), (1)(2), (1)(1) (2 MSBs)
// 5 (2)(2) (2 LSBs), (2)(1), (2)(0)
// 6 (3)(1) (1 LSB), (3)(0), (2)(3), (2)(2) (1 MSB)
// 7 (3)(3), (3)(2), (3)(1) (2 MSBs)
// (0
// Read an int and a short
long tmpdword;
int tmpword;
long alphaDat;
tmpword = SourceData[i + 2] | (SourceData[i + 3] << 8);
tmpdword = SourceData[i + 4] | (SourceData[i + 5] << 8) | (SourceData[i + 6] << 16) |
(SourceData[i + 7] << 24);
alphaDat = tmpword | (tmpdword << 16);
int ChunkNum = i / 16;
long XPos = ChunkNum % ChunksPerHLine;
long YPos = (ChunkNum - XPos) / ChunksPerHLine;
long ttmp;
int sizeh = height < 4 ? height : 4;
int sizew = width < 4 ? width : 4;
int x, y;
for (x = 0; x < sizeh; x++)
{
for (y = 0; y < sizew; y++)
{
CColor = Color[CData & 3];
CData >>= 2;
CColor.a = Alpha[alphaDat & 7];
alphaDat >>= 3;
ttmp = ((YPos * 4 + x) * width + XPos * 4 + y) * 4;
if ((CColor.a != 0) |
((CColor.b != 0 | CColor.g != 0 | CColor.r != 0) &
(CColor.b != 255 | CColor.g != 255 | CColor.r != 255)))
{
//int fdfd = 0;
}
DestData[ttmp] = (byte)CColor.b;
DestData[ttmp + 1] = (byte)CColor.g;
DestData[ttmp + 2] = (byte)CColor.r;
DestData[ttmp + 3] = (byte)CColor.a;
}
}
}
return DestData;
}
/// <summary>
/// The decode dds.
/// </summary>
/// <param name="sourceBytes">The source bytes.</param>
/// <param name="b2">The b 2.</param>
/// <returns></returns>
/// <remarks></remarks>
public static Bitmap DecodeDDS(byte[] sourceBytes, ParsedBitmap.BitmapInfo b2)
{
////
//// Check type name and handle 2D, 3D & Cubemaps
////
// b2.typename;
////
byte[] poo = new byte[0];
IntPtr ptr = new IntPtr();
PixelFormat o = new PixelFormat();
int poolength;
byte[] fu;
DecodeDXT decode = new DecodeDXT();
int oldwidth = b2.width;
if (b2.width % 16 != 0)
b2.width = (ushort)(b2.width + (16 - (b2.width % 16)));
int stride = b2.width;
if (b2.swizzle)
{
sourceBytes = Swizzler.Swizzle(sourceBytes, b2.width, b2.height, b2.depth, b2.bitsPerPixel, true);
}
switch (b2.formatname)
{
#region DXT1
case (ParsedBitmap.BitmapFormat)14:
if (b2.swizzle)
{
MessageBox.Show("Swizzled");
}
sourceBytes = decode.DecodeDXT1(b2.height, b2.width, sourceBytes);
stride *= 4;
o = PixelFormat.Format32bppArgb;
break;
#endregion
#region DXT2/3
case (ParsedBitmap.BitmapFormat)15:
if (b2.swizzle)
{
MessageBox.Show("Swizzled");
}
sourceBytes = decode.DecodeDXT23(b2.height, b2.width, sourceBytes);
stride *= 4;
o = PixelFormat.Format32bppArgb;
break;
#endregion
#region DXT 4/5
case (ParsedBitmap.BitmapFormat)16:
if (b2.swizzle)
{
MessageBox.Show("Swizzled");
}
sourceBytes = decode.DecodeDXT45(b2.height, b2.width, sourceBytes);
stride *= 4;
o = PixelFormat.Format32bppArgb;
break;
#endregion
#region A8R8G8B8
case (ParsedBitmap.BitmapFormat)11:
stride *= 4;
o = PixelFormat.Format32bppArgb;
break;
#endregion
#region X8R8G8B8
case (ParsedBitmap.BitmapFormat)10:
stride *= 4;
o = PixelFormat.Format32bppArgb;
break;
#endregion
#region // 16 bit \\
#region A4R4G4B4
case (ParsedBitmap.BitmapFormat)9:
stride *= 4;
o = PixelFormat.Format32bppArgb;
poolength = sourceBytes.Length;
fu = new byte[poolength * 2];
for (int e = 0; e < poolength / 2; e++)
{
int r = e * 2;
fu[r * 2 + 0] = (byte)((sourceBytes[r + 1] & 0xFF) >> 0); // Blue
fu[r * 2 + 1] = (byte)((sourceBytes[r + 0] & 0xFF) >> 0); // Green
fu[r * 2 + 2] = (byte)((sourceBytes[r + 0] & 0xFF) >> 0); // Red
fu[r * 2 + 3] = 255; // (byte)(((sourceBytes[r + 1] & 0xFF) >> 0)); // Alpha
}
sourceBytes = fu;
break;
#endregion
#region G8B8
case (ParsedBitmap.BitmapFormat)22:
stride *= 4;
o = PixelFormat.Format32bppArgb;
poolength = sourceBytes.Length;
fu = new byte[poolength / 2 * 4];
// These are actually signed (+/-128), so convert to unsigned
for (int e = 0; e < poolength / 2; e++)
{
int r = e * 2;
fu[r * 2 + 0] = (byte)(sourceBytes[r + 1] + 128); // Blue
fu[r * 2 + 1] = (byte)(sourceBytes[r + 1] + 128); // Green
fu[r * 2 + 2] = (byte)(sourceBytes[r + 0] + 128); // Red
fu[r * 2 + 3] = (byte)(sourceBytes[r + 0] + 128); // Alpha
}
sourceBytes = fu;
break;
#endregion
#region A1R5G5B5
case (ParsedBitmap.BitmapFormat)8:
stride *= 2;
o = PixelFormat.Format16bppRgb555;
break;
#endregion
#region R5G6B5
case (ParsedBitmap.BitmapFormat)6:
stride *= 2;
o = PixelFormat.Format16bppRgb565;
break;
#endregion
#region A8Y8
case (ParsedBitmap.BitmapFormat)3:
o = PixelFormat.Format32bppArgb;
poolength = sourceBytes.Length;
fu = new byte[poolength / 2 * 4];
for (int e = 0; e < poolength / 2; e++)
{
int r = e * 2;
fu[r * 2 + 0] = sourceBytes[r + 1];
fu[r * 2 + 1] = sourceBytes[r + 1];
fu[r * 2 + 2] = sourceBytes[r + 1];
fu[r * 2 + 3] = sourceBytes[r + 0];
}
sourceBytes = fu;
stride *= 4;
break;
#endregion
#endregion
#region // 8 bit \\
#region P8
case ParsedBitmap.BitmapFormat.BITM_FORMAT_P8:
o = PixelFormat.Format32bppArgb;
poolength = sourceBytes.Length;
fu = new byte[poolength * 4];
for (int e = 0; e < poolength; e++)
{
int r = e * 4;
fu[r + 0] = sourceBytes[e];
fu[r + 1] = sourceBytes[e];
fu[r + 2] = sourceBytes[e];
fu[r + 3] = 255;
}
sourceBytes = fu;
stride *= 4;
break;
#endregion
#region A8
case ParsedBitmap.BitmapFormat.BITM_FORMAT_A8:
o = PixelFormat.Format32bppArgb;
poolength = sourceBytes.Length;
fu = new byte[poolength * 4];
for (int e = 0; e < poolength; e++)
{
int r = e * 4;
fu[r + 0] = sourceBytes[e];
fu[r + 1] = sourceBytes[e];
fu[r + 2] = sourceBytes[e];
fu[r + 3] = 255;
}
sourceBytes = fu;
stride *= 4;
break;
#endregion
#region AY8
case ParsedBitmap.BitmapFormat.BITM_FORMAT_AY8:
o = PixelFormat.Format32bppArgb;
poolength = sourceBytes.Length;
fu = new byte[poolength * 4];
for (int e = 0; e < poolength; e++)
{
int r = e * 4;
/*
fu[r + 0] = (byte)((sourceBytes[e] & 0x0F) * 255 / 15 + 128);
fu[r + 1] = (byte)((sourceBytes[e] & 0x0F) * 255 / 15 + 128);
fu[r + 2] = (byte)((sourceBytes[e] & 0x0F) * 255 / 15 + 128);
*/
fu[r + 0] = (byte)(((sourceBytes[e] & 0xF0) >> 4) * 255 / 15);
fu[r + 1] = (byte)(((sourceBytes[e] & 0xF0) >> 4) * 255 / 15);
fu[r + 2] = (byte)(((sourceBytes[e] & 0xF0) >> 4) * 255 / 15);
fu[r + 3] = (byte)((sourceBytes[e] & 0x0F) * 255 / 15);
/*
fu[r + 0] = (byte)((sourceBytes[e] & 0x0F) * 255 / 15);
fu[r + 1] = (byte)((sourceBytes[e] & 0x0F) * 255 / 15);
fu[r + 2] = (byte)((sourceBytes[e] & 0x0F) * 255 / 15);
fu[r + 3] = (byte)(((sourceBytes[e] & 0xF0) >> 3) * 255 / 15);
if (sourceBytes[e] == 0)
fu[r + 3] = 0;
else
fu[r + 3] = 255;
*/
}
sourceBytes = fu;
stride *= 4;
break;
#endregion
#region Y8
case (ParsedBitmap.BitmapFormat)1:
o = PixelFormat.Format32bppArgb;
poolength = sourceBytes.Length;
fu = new byte[poolength * 4];
for (int e = 0; e < poolength; e++)
{
int r = e * 4;
fu[r + 0] = sourceBytes[e];
fu[r + 1] = sourceBytes[e];
fu[r + 2] = sourceBytes[e];
fu[r + 3] = 255;
}
sourceBytes = fu;
stride *= 4;
break;
#endregion
/*
#region LightMap
case ParsedBitmap.BitmapFormat.BITM_FORMAT_LIGHTMAP:
o = PixelFormat.Format32bppArgb;// Format32bppArgb;
poolength = sourceBytes.Length;
fu = new byte[poolength * 4];
int bspnumber = ident;
int paletteindex = -1;
if (visualchunkindex < 0)
{
int wtf = 0 - (visualchunkindex + 1);
paletteindex = map.BSP.sbsp[bspnumber].SceneryChunk_LightMap_Index[wtf];
}
if (paletteindex == -1)
for (int i = 0; i < map.BSP.sbsp[bspnumber].VisualChunk_Bitmap_Index.Length; i++)
if (map.BSP.sbsp[bspnumber].VisualChunk_Bitmap_Index[i] == visualchunkindex)
{
paletteindex = map.BSP.sbsp[bspnumber].VisualChunk_LightMap_Index[visualchunkindex];
break;
}
if (paletteindex == -1)
for (int i = 0; i < map.BSP.sbsp[bspnumber].SceneryChunk_Bitmap_Index.Length; i++)
if (map.BSP.sbsp[bspnumber].SceneryChunk_Bitmap_Index[i] == visualchunkindex)
{
paletteindex = map.BSP.sbsp[bspnumber].SceneryChunk_LightMap_Index[i];
break;
}
if (paletteindex == 255) return null;
for (int e = 0; e < poolength; e++)
{
int r = e * 4;
fu[r + 0] = (byte)map.BSP.sbsp[bspnumber].LightMap_Palettes[paletteindex][sourceBytes[e]].r;
fu[r + 1] = (byte)map.BSP.sbsp[bspnumber].LightMap_Palettes[paletteindex][sourceBytes[e]].g;
fu[r + 2] = (byte)map.BSP.sbsp[bspnumber].LightMap_Palettes[paletteindex][sourceBytes[e]].b;
fu[r + 3] = (byte)map.BSP.sbsp[bspnumber].LightMap_Palettes[paletteindex][sourceBytes[e]].a;
}
sourceBytes = fu;
stride *= 4;
break;
#endregion
*/
#endregion
default:
return null;
}
Marshal.FreeHGlobal(ptr);
ptr = Marshal.AllocHGlobal(sourceBytes.Length);
RtlMoveMemory(ptr, sourceBytes, sourceBytes.Length);
return new Bitmap(b2.width, b2.height, stride, o, ptr);
}
