public void addTexel(Texel tex)
{
texels[index] = tex;
index++;
}
public TexelIndex(Color[] texColors)
{
int mipLevels = (int)(Math.Log(texColors.Length) / Math.Log(4.0));
EDebug.Log("TI miplevels " + mipLevels);
int pixelCount = texColors.Length;
//setup texels
texelLevels = new TexelLevel[mipLevels];
for (int i = 0; i < texelLevels.Length; i++)
{
texelLevels[i] = new TexelLevel(pixelCount);
pixelCount /= 4;
}
int sideDimension = (int)Math.Sqrt(texColors.Length); //256 becomes 16 , the side dimension
for (int i = 0; i < texColors.Length; i += sideDimension * 2)
{
for (int j = 0; j < sideDimension; j += 2)
{
int l = j + i;
Color[] targetC = new Color[4];
targetC[0] = texColors[l];
targetC[1] = texColors[l + 1];
targetC[2] = texColors[l + sideDimension];
targetC[3] = texColors[l + sideDimension + 1];
Texel tex = new TexelCalculation(targetC).getTexel();
texelLevels[0].addTexel(tex);
}
}
TexelOps to = new TexelOps();
Texel[] target = new Texel[4];
for (int i = 0; i < texelLevels.Length - 1; i++) // for each level (except the last one)
{
TexelLevel texelLevel = texelLevels[i];
int texelCount = texelLevels[i].getTexelCount();
int mipSideDimension = (int)Math.Sqrt(texelCount);
int capacity = (mipSideDimension ^ 2) / 4;
//Debug.Log("mip side dimension : " + mipSideDimension * 2);
// combine 4 texels together and add the resulting texel to the next level
for (int j = 0; j < texelCount; j += mipSideDimension * 2)
{
for (int k = 0; k < mipSideDimension; k += 2)
{
int l = j + k;
target[0] = texelLevel.getTexel(l);
target[1] = texelLevel.getTexel(l + 1);
target[2] = texelLevel.getTexel(l + mipSideDimension);
target[3] = texelLevel.getTexel(l + mipSideDimension + 1);
Texel combinedTex = to.CombineTexels(target);
// add combined texel to next
texelLevels[i + 1].addTexel(combinedTex);
capacity++;
}
}
}
}
