public void ConversionToBytesReturnsArrayOfCorrectSize()
{
var block = new BC3BlockData();
var buffer = block.ToBytes();
Assert.AreEqual(BlockFormat.BC3ByteSize, buffer.Length);
CollectionAssert.AreEqual(buffer, new byte[BlockFormat.BC3ByteSize]);
}
public void ConversionToBytesSetsAlpha1()
{
const byte alphaValue = 215;
var block = new BC3BlockData();
block.Alpha1 = alphaValue;
var buffer = block.ToBytes();
byte alpha1 = buffer[1];
Assert.AreEqual(alphaValue, alpha1);
}
public void ConversionToBytesSetsColor1()
{
var color = new Color565Helper(40500);
var block = new BC3BlockData();
block.Color1 = color.Color;
var buffer = block.ToBytes();
byte c1Low = buffer[10];
byte c1High = buffer[11];
Assert.AreEqual(color.LowByte, c1Low);
Assert.AreEqual(color.HighByte, c1High);
}
public void ConversionToBytesSetsAlphaIndexes()
{
// Increment until max value, then decrement
byte expectedAlphas0 = "10 001 000".AsByte(); // c b a
byte expectedAlphas1 = "1 100 011 0".AsByte(); // f e d c
byte expectedAlphas2 = "111 110 10".AsByte(); // h g f
byte expectedAlphas3 = "01 110 111".AsByte(); // k j i
byte expectedAlphas4 = "0 011 100 1".AsByte(); // n m l k
byte expectedAlphas5 = "000 001 01".AsByte(); // p o n
var block = new BC3BlockData();
block.AlphaIndexes[0] = 0; // a 000
block.AlphaIndexes[1] = 1; // b 001
block.AlphaIndexes[2] = 2; // c 010
block.AlphaIndexes[3] = 3; // d 011
block.AlphaIndexes[4] = 4; // e 100
block.AlphaIndexes[5] = 5; // f 101
block.AlphaIndexes[6] = 6; // g 110
block.AlphaIndexes[7] = 7; // h 111
block.AlphaIndexes[8] = 7; // i 111
block.AlphaIndexes[9] = 6; // j 110
block.AlphaIndexes[10] = 5; // k 101
block.AlphaIndexes[11] = 4; // l 100
block.AlphaIndexes[12] = 3; // m 011
block.AlphaIndexes[13] = 2; // n 010
block.AlphaIndexes[14] = 1; // o 001
block.AlphaIndexes[15] = 0; // p 000
var buffer = block.ToBytes();
byte alphas2 = buffer[2];
byte alphas1 = buffer[3];
byte alphas0 = buffer[4];
byte alphas5 = buffer[5];
byte alphas4 = buffer[6];
byte alphas3 = buffer[7];
Assert.AreEqual(expectedAlphas0, alphas0);
Assert.AreEqual(expectedAlphas1, alphas1);
Assert.AreEqual(expectedAlphas2, alphas2);
Assert.AreEqual(expectedAlphas3, alphas3);
Assert.AreEqual(expectedAlphas4, alphas4);
Assert.AreEqual(expectedAlphas5, alphas5);
}
public void ConversionToBytesSetsColorIndexes()
{
byte expectedIndexes0 = "11 10 01 00".AsByte(); // d c b a
byte expectedIndexes1 = "00 11 10 01".AsByte(); // h g f e
byte expectedIndexes2 = "01 00 11 10".AsByte(); // l k j i
byte expectedIndexes3 = "10 01 00 11".AsByte(); // p o n m
var block = new BC3BlockData();
// pixel value byte
block.ColorIndexes[0] = 0; // a(0,3) 00 indexes0
block.ColorIndexes[1] = 1; // b(1,3) 01
block.ColorIndexes[2] = 2; // c(2,3) 10
block.ColorIndexes[3] = 3; // d(3,3) 11
block.ColorIndexes[4] = 1; // e(0,2) 01 indexes1
block.ColorIndexes[5] = 2; // f(1,2) 10
block.ColorIndexes[6] = 3; // g(2,2) 11
block.ColorIndexes[7] = 0; // h(3,2) 00
block.ColorIndexes[8] = 2; // i(0,1) 10 indexes2
block.ColorIndexes[9] = 3; // j(1,1) 11
block.ColorIndexes[10] = 0; // k(2,1) 00
block.ColorIndexes[11] = 1; // l(3,1) 01
block.ColorIndexes[12] = 3; // m(0,0) 11 indexes3
block.ColorIndexes[13] = 0; // n(1,0) 00
block.ColorIndexes[14] = 1; // o(2,0) 01
block.ColorIndexes[15] = 2; // p(3,0) 10
var buffer = block.ToBytes();
byte indexes0 = buffer[12];
byte indexes1 = buffer[13];
byte indexes2 = buffer[14];
byte indexes3 = buffer[15];
Assert.AreEqual(expectedIndexes0, indexes0);
Assert.AreEqual(expectedIndexes1, indexes1);
Assert.AreEqual(expectedIndexes2, indexes2);
Assert.AreEqual(expectedIndexes3, indexes3);
}
