StratifiedSampler(const ParamSet& paramSet)
{
size_t desiredSampleCount = (size_t) paramSet.getInteger("sampleCount", 1);
size_t i = 1;
while (i * i < desiredSampleCount)
++i;
m_resolution = i;
m_sampleCount = m_resolution * m_resolution;
if (m_sampleCount != desiredSampleCount)
std::cout << "Sample count should be a perfect square -- rounding to "
<< m_sampleCount << std::endl;
m_depth = paramSet.getInteger("depth", 3);
m_permutations1D = new size_t*[m_depth];
m_permutations2D = new size_t*[m_depth];
for (int i = 0; i < m_depth; ++i)
{
m_permutations1D[i] = new size_t[m_sampleCount];
m_permutations2D[i] = new size_t[m_sampleCount];
}
m_invResolution = 1.0f / (float)m_resolution;
m_invResolutionSquare = 1.0f / (float) m_sampleCount;
m_random = new Random();
m_sampleIndex = 0;
}
