int LDSampler::GetMoreSamples(Sample *samples) {
if (yPos == yPixelEnd) return 0;
if (sampleBuf == NULL)
sampleBuf = new float[LDPixelSampleFloatsNeeded(samples, pixelSamples)];
LDPixelSample(xPos, yPos, shutterOpen, shutterClose,
pixelSamples, samples, sampleBuf);
if (++xPos == xPixelEnd) {
xPos = xPixelStart;
++yPos;
}
return pixelSamples;
}
int AdaptiveSampler::GetMoreSamples(Sample *samples, RNG &rng) {
if (!sampleBuf)
sampleBuf = new float[LDPixelSampleFloatsNeeded(samples,
maxSamples)];
if (supersamplePixel) {
LDPixelSample(xPos, yPos, shutterOpen, shutterClose, maxSamples,
samples, sampleBuf, rng);
return maxSamples;
}
else {
if (yPos == yPixelEnd) return 0;
LDPixelSample(xPos, yPos, shutterOpen, shutterClose, minSamples,
samples, sampleBuf, rng);
return minSamples;
}
}