protected override void ReadBlock(SimpleBinaryStream stream, ref PixelColor[,] cache, int blockX)
{
blockX *= 4;
PixelColor[] baseColor = new PixelColor[4];
ushort color0, color1;
baseColor[0] = GetColorFromRGB565(color0 = stream.ReadUInt16());
baseColor[1] = GetColorFromRGB565(color1 = stream.ReadUInt16());
if (color0 > color1)
{
// baseColor[2] = (baseColor[0] * 2 + baseColor[1]) / 3;
baseColor[2] = PixelColor.MAD(baseColor[0], 2, baseColor[1], 3);
baseColor[3] = PixelColor.MAD(baseColor[1], 2, baseColor[0], 3);
}
else
{
baseColor[2] = PixelColor.AVG(baseColor[0], baseColor[1]);
baseColor[3] = new PixelColor(0, 0, 0, 1f);
}
for (int y = 0; y < 4; y++)
{
byte index = stream.ReadByte();
cache[y, blockX + 0] = baseColor[(index >> 0) & 0x3];
cache[y, blockX + 1] = baseColor[(index >> 2) & 0x3];
cache[y, blockX + 2] = baseColor[(index >> 4) & 0x3];
cache[y, blockX + 3] = baseColor[(index >> 6) & 0x3];
}
}
private PixelColor ReadPixel(SimpleBinaryStream stream)
{
float r = 0, g = 0, b = 0, a = 1.0f;
switch (format)
{
case TextureFormat.B8G8R8A8_UNORM:
b = UnormByteToSingle(stream.ReadByte());
g = UnormByteToSingle(stream.ReadByte());
r = UnormByteToSingle(stream.ReadByte());
a = UnormByteToSingle(stream.ReadByte());
break;
case TextureFormat.B8G8R8X8_UNORM:
b = UnormByteToSingle(stream.ReadByte());
g = UnormByteToSingle(stream.ReadByte());
r = UnormByteToSingle(stream.ReadByte());
stream.ReadByte();
break;
case TextureFormat.R16G16_UNORM:
r = UnormUShortToSingle(stream.ReadUInt16());
g = UnormUShortToSingle(stream.ReadUInt16());
break;
case TextureFormat.R16G16F:
r = HalfToSingle(stream.ReadUInt16());
g = HalfToSingle(stream.ReadUInt16());
break;
case TextureFormat.R32_UINT: // not good for visual
r = IntToSingle(stream.ReadUInt32());
break;
case TextureFormat.A8_UNORM:
r = UnormByteToSingle(stream.ReadByte());
break;
case TextureFormat.R8G8B8A8_UNORM:
r = UnormByteToSingle(stream.ReadByte());
g = UnormByteToSingle(stream.ReadByte());
b = UnormByteToSingle(stream.ReadByte());
a = UnormByteToSingle(stream.ReadByte());
break;
case TextureFormat.R8G8B8A8_UINT:
r = UnormByteToSingle(stream.ReadByte());
g = UnormByteToSingle(stream.ReadByte());
b = UnormByteToSingle(stream.ReadByte());
a = UnormByteToSingle(stream.ReadByte());
break;
case TextureFormat.R16G16B16A16_UNORM:
r = UnormUShortToSingle(stream.ReadUInt16());
g = UnormUShortToSingle(stream.ReadUInt16());
b = UnormUShortToSingle(stream.ReadUInt16());
a = UnormUShortToSingle(stream.ReadUInt16());
break;
case TextureFormat.L8_UNORM:
r = UnormByteToSingle(stream.ReadByte());
break;
case TextureFormat.R8_UNORM:
r = UnormByteToSingle(stream.ReadByte());
break;
case TextureFormat.R16_UNORM:
r = UnormUShortToSingle(stream.ReadUInt16());
break;
case TextureFormat.R16F:
r = HalfToSingle(stream.ReadUInt16());
break;
case TextureFormat.D24_UNORM_S8_UINT:
r = UnormInt24ToSingle(stream.ReadUInt24());
g = UnormByteToSingle(stream.ReadByte());
break;
case TextureFormat.D24_UNORM_X8_UINT:
r = UnormInt24ToSingle(stream.ReadUInt24());
stream.ReadByte();
break;
case TextureFormat.D16_UNORM:
r = UnormUShortToSingle(stream.ReadUInt16());
break;
case TextureFormat.D32F:
r = SingleToSingle(stream.ReadSingle());
break;
case TextureFormat.L16_UNORM:
r = UnormUShortToSingle(stream.ReadUInt16());
break;
case TextureFormat.R16G16B16A16F:
r = HalfToSingle(stream.ReadUInt16());
g = HalfToSingle(stream.ReadUInt16());
b = HalfToSingle(stream.ReadUInt16());
a = HalfToSingle(stream.ReadUInt16());
break;
case TextureFormat.R32F:
r = SingleToSingle(stream.ReadSingle());
break;
case TextureFormat.R32G32B32F:
r = SingleToSingle(stream.ReadSingle());
g = SingleToSingle(stream.ReadSingle());
b = SingleToSingle(stream.ReadSingle());
break;
case TextureFormat.R32G32B32A32F:
r = SingleToSingle(stream.ReadSingle());
g = SingleToSingle(stream.ReadSingle());
b = SingleToSingle(stream.ReadSingle());
a = SingleToSingle(stream.ReadSingle());
break;
case TextureFormat.R11G11B10F: // unsupported! daze!
stream.ReadUInt32();
break;
case TextureFormat.R16G16B16:
r = UShortToSingle(stream.ReadUInt16());
g = UShortToSingle(stream.ReadUInt16());
b = UShortToSingle(stream.ReadUInt16());
break;
case TextureFormat.R8G8B8:
r = UnormByteToSingle(stream.ReadByte());
g = UnormByteToSingle(stream.ReadByte());
b = UnormByteToSingle(stream.ReadByte());
break;
case TextureFormat.B8G8R8:
b = UnormByteToSingle(stream.ReadByte());
g = UnormByteToSingle(stream.ReadByte());
r = UnormByteToSingle(stream.ReadByte());
break;
case TextureFormat.R32G32B32A32_UINT: // not good for visual
r = IntToSingle(stream.ReadUInt32());
g = IntToSingle(stream.ReadUInt32());
b = IntToSingle(stream.ReadUInt32());
a = IntToSingle(stream.ReadUInt32());
break;
case TextureFormat.R8_UINT:
r = UnormByteToSingle(stream.ReadByte());
break;
case TextureFormat.R16_UINT:
r = UShortToSingle(stream.ReadUInt16());
break;
case TextureFormat.R24G8_TYPELESS: // not sure if it should be normalized
r = Int24ToSingle(stream.ReadUInt24());
g = ByteToSingle(stream.ReadByte());
break;
case TextureFormat.R32G32B32_UINT: // not good for visual
r = IntToSingle(stream.ReadUInt32());
g = IntToSingle(stream.ReadUInt32());
b = IntToSingle(stream.ReadUInt32());
break;
case TextureFormat.D32_S8X24_UINT:
r = SingleToSingle(stream.ReadSingle());
g = ByteToSingle((byte)(stream.ReadUInt32() & 0xFF));
break;
case TextureFormat.R16G16_UINT: // not good for visual
r = UShortToSingle(stream.ReadUInt16());
g = UShortToSingle(stream.ReadUInt16());
break;
case TextureFormat.R8G8_UNORM:
r = UnormByteToSingle(stream.ReadByte());
g = UnormByteToSingle(stream.ReadByte());
break;
case TextureFormat.R32G32F:
r = SingleToSingle(stream.ReadSingle());
g = SingleToSingle(stream.ReadSingle());
break;
case TextureFormat.R32G32_UINT: // not good for visual
r = IntToSingle(stream.ReadUInt32());
g = IntToSingle(stream.ReadUInt32());
break;
case TextureFormat.R16G16B16A16_UINT:
r = UShortToSingle(stream.ReadUInt16());
g = UShortToSingle(stream.ReadUInt16());
b = UShortToSingle(stream.ReadUInt16());
a = UShortToSingle(stream.ReadUInt16());
break;
default:
throw new Exception("Unsupported format:" + format.ToString());
}
return new PixelColor(r, g, b, a);
}