Lines Matching refs:sigma
471 static float gauss(float x, float sigma)
473 return exp(- (x * x) / (2.0f * sigma * sigma));
476 static void buildKernel(float sigma, float* kernel, int kernelWidth)
481 kernel[i] = gauss(i - halfWidth, sigma);
792 float sigma = m_state->m_shadowBlur * 0.333333f;
798 while (sigma > cMaxSigma) {
801 sigma *= 0.5f;
821 int halfWidth = static_cast<int>(sigma * 3.0f);
824 buildKernel(sigma, kernel.get(), kernelWidth);
