Function ReIndexShapef

cmp_compressonatorlib/bc6h/bc6h_encode.cpp:823–884

}

void ReIndexShapef(AMD_BC6H_Format& BC6H_data, int shape_indices[BC6H_MAX_SUBSETS][MAX_SUBSET_SIZE])
{
    float error = 0;
    float bestError;
    int   bestIndex = 0;
    int   sub0index = 0;
    int   sub1index = 0;
    int   MaxPallet;
    int   region = (BC6H_data.region - 1);

    if (region == 0)
        MaxPallet = 16;
    else
        MaxPallet = 8;

    for (int i = 0; i < BC6H_MAX_SUBSET_SIZE; i++)
    {
        // subset 0 or subset 1
        if (PARTITIONS[region][BC6H_data.d_shape_index][i])
        {
            bestError = FLT_MAX;
            bestIndex = 0;

            // For two shape regions max Pallet is 8
            for (int j = 0; j < MaxPallet; j++)
            {
                // Calculate error from original
                error = abs(BC6H_data.din[i][0] - BC6H_data.Paletef[1][j].x) + abs(BC6H_data.din[i][1] - BC6H_data.Paletef[1][j].y) +
                        abs(BC6H_data.din[i][2] - BC6H_data.Paletef[1][j].z);
                if (error < bestError)
                {
                    bestError = error;
                    bestIndex = j;
                }
            }

            shape_indices[1][sub1index] = bestIndex;
            sub1index++;
        }
        else
        {
            // This is shared for one or two shape regions max Pallet either 16 or 8
            bestError = FLT_MAX;
            bestIndex = 0;

            for (int j = 0; j < MaxPallet; j++)
            {
                // Calculate error from original
                error = abs(BC6H_data.din[i][0] - BC6H_data.Paletef[0][j].x) + abs(BC6H_data.din[i][1] - BC6H_data.Paletef[0][j].y) +
                        abs(BC6H_data.din[i][2] - BC6H_data.Paletef[0][j].z);
                if (error < bestError)
                {
                    bestError = error;
                    bestIndex = j;
                }
            }

            shape_indices[0][sub0index] = bestIndex;