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];
}
}
protected override void ReadBlock(SimpleBinaryStream stream, ref PixelColor[,] cache, int blockX)
{
base.ReadBlock(stream, ref cache, blockX);
DXT5Reader.ReadBC3AlphaBlock(stream.ReadInt64(), ref cache, blockX * 4, (ref PixelColor pixel, float value) =>
{
pixel.G = value;
});
}
protected override void ReadBlock(SimpleBinaryStream stream, ref PixelColor[,] cache, int blockX)
{
long alphaData = stream.ReadInt64();
base.ReadBlock(stream, ref cache, blockX);
ReadBC3AlphaBlock(alphaData, ref cache, blockX * 4, (ref PixelColor pixel, float value) =>
{
pixel.A = value;
});
}
public override void Read(PipelineWriter output)
{
using (SimpleBinaryStream stream = new SimpleBinaryStream(dataSource))
{
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
output.Write(ReadPixel(stream));
}
}
}
}
protected override void ReadBlock(SimpleBinaryStream stream, ref PixelColor[,] cache, int blockX)
{
ulong alphaData = stream.ReadUInt64();
base.ReadBlock(stream, ref cache, blockX);
blockX *= 4;
int i = 0;
for (int y = 0; y < 4; y++)
{
for (int x = 0; x < 4; x++)
{
int alpha = (int)((alphaData >> (i * 4)) & 0xF);
i++;
alpha = alpha << 4 | alpha;
cache[y, blockX + x].A = alpha / 255f;
}
}
}
protected abstract void ReadBlock(SimpleBinaryStream stream, ref PixelColor[,] cache, int blockX);
public override void Read(PipelineWriter output)
{
int blockWidth = Math.Max((width + 3) / 4, 1);
int blockHeight = Math.Max((height + 3) / 4, 1);
PixelColor[,] cache0 = new PixelColor[4, blockWidth * 4];
PixelColor[,] cache1 = new PixelColor[4, blockWidth * 4];
bool isPingPong = false;
#if !NET40
System.Threading.Tasks.Task task = null;
#endif
using (SimpleBinaryStream stream = new SimpleBinaryStream(dataSource))
{
for (int y = 0; y < blockHeight; y++)
{
if (isPingPong)
{
for (int x = 0; x < blockWidth; x++)
ReadBlock(stream, ref cache1, x);
}
else
{
for (int x = 0; x < blockWidth; x++)
ReadBlock(stream, ref cache0, x);
}
#if !NET40
if (task != null)
task.Wait();
#endif
bool pingPoing = isPingPong;
int baseY = y;
#if !NET40
task = System.Threading.Tasks.Task.Run((() =>
{
#endif
for (int y2 = 0; y2 < 4; y2++)
{
int currentY = baseY * 4 + y2;
if (currentY < height)
{
if (pingPoing)
{
for (int x = 0; x < width; x++)
output.Write(cache1[y2, x]);
}
else
{
for (int x = 0; x < width; x++)
output.Write(cache0[y2, x]);
}
}
}
#if !NET40
}));
#endif
isPingPong = !isPingPong;
}
#if !NET40
task.Wait();
#endif
}
}
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);
}