private void convert_4x4texel_b(byte[] tex, int width, int height, byte[] data, Color[] pal, NSMBe4.NSBMD.ImageTexeler.LockBitmap rgbaOut)
{
var list1 = new List<uint>();
for (int i = 0; i < (tex.Length + 1) / 4; ++i)
list1.Add(LibNDSFormats.Utils.Read4BytesAsUInt32(tex, i * 4));
var list2 = new List<UInt16>();
for (int i = 0; i < (data.Length + 1) / 2; ++i)
list2.Add(LibNDSFormats.Utils.Read2BytesAsUInt16(data, i * 2));
var b = convert_4x4texel(list1.ToArray(), width, height, list2.ToArray(), pal, rgbaOut);
}
private bool convert_4x4texel(uint[] tex, int width, int height, UInt16[] data, Color[] pal, NSMBe4.NSBMD.ImageTexeler.LockBitmap rgbaOut)
{
int w = width / 4;
int h = height / 4;
// traverse 'w x h blocks' of 4x4-texel
for (int y = 0; y < h; y++)
for (int x = 0; x < w; x++)
{
int index = y * w + x;
UInt32 t = tex[index];
UInt16 d = data[index];
UInt16 addr = (ushort)(d & 0x3fff);
UInt16 mode = (ushort)((d >> 14) & 3);
// traverse every texel in the 4x4 texels
for (int r = 0; r < 4; r++)
for (int c = 0; c < 4; c++)
{
int texel = (int)((t >> ((r * 4 + c) * 2)) & 3);
Color pixel = rgbaOut.GetPixel((x * 4 + c), (y * 4 + r));
switch (mode)
{
case 0:
pixel = pal[(addr << 1) + texel];
if (texel == 3) pixel = Color.Transparent; // make it transparent, alpha = 0
break;
case 2:
pixel = pal[(addr << 1) + texel];
break;
case 1:
switch (texel)
{
case 0:
case 1:
pixel = pal[(addr << 1) + texel];
break;
case 2:
byte R = (byte)((pal[(addr << 1)].R + pal[(addr << 1) + 1].R) / 2L);
byte G = (byte)((pal[(addr << 1)].G + pal[(addr << 1) + 1].G) / 2L);
byte B = (byte)((pal[(addr << 1)].B + pal[(addr << 1) + 1].B) / 2L);
byte A = 0xff;
pixel = Color.FromArgb(A, R, G, B);
break;
case 3:
pixel = Color.Transparent; // make it transparent, alpha = 0
break;
}
break;
case 3:
switch (texel)
{
case 0:
case 1:
pixel = pal[(addr << 1) + texel];
break;
case 2:
{
byte R = (byte)((pal[(addr << 1)].R * 5L + pal[(addr << 1) + 1].R * 3L) / 8);
byte G = (byte)((pal[(addr << 1)].G * 5L + pal[(addr << 1) + 1].G * 3L) / 8);
byte B = (byte)((pal[(addr << 1)].B * 5L + pal[(addr << 1) + 1].B * 3L) / 8);
byte A = 0xff;
pixel = Color.FromArgb(A, R, G, B);
break;
}
case 3:
{
byte R = (byte)((pal[(addr << 1)].R * 3L + pal[(addr << 1) + 1].R * 5L) / 8);
byte G = (byte)((pal[(addr << 1)].G * 3L + pal[(addr << 1) + 1].G * 5L) / 8);
byte B = (byte)((pal[(addr << 1)].B * 3L + pal[(addr << 1) + 1].B * 5L) / 8);
byte A = 0xff;
pixel = Color.FromArgb(A, R, G, B);
break;
}
}
break;
}
rgbaOut.SetPixel((x * 4 + c), (y * 4 + r), pixel);
//rgbaOut[(y * 4 + r) * width + (x * 4 + c)] = pixel;
}
}
return true;
}
