public Sample GetSample(Sample prevSample)
{
TotalSamples++;
Sample sample = new Sample(this);
sample.sampleData = new float[SampleDataOffset.SamplesPerVertex * sceneMaxPathDepth];
//sample.modifyData = new int[SampleDataOffset.SamplesPerVertex * sceneMaxPathDepth];
//MC.StratifiedSample1D(sample.sampleData, SampleDataOffset.SamplesPerVertex * sceneMaxPathDepth, rnd, false);
//sample.sampleData
sample.InitSample(SampleDataOffset.SamplesPerVertex * sceneMaxPathDepth);
sample.imageX = rnd.NextFloat()*screenWidth;
sample.imageY = rnd.NextFloat()*screenHeight;
//sample.imageY += screenStartLine;
return sample;
/*if ((pass >= MagicValue2))
{
// In order to improve ray coherency
int stepX = currentSubSampleIndex % 4;
int stepY = currentSubSampleIndex / 4;
scrX = currentSampleScreenX;
scrY = currentSampleScreenY;
currentSubSampleIndex++;
if (currentSubSampleIndex == (MagicValue1 / 2))
{
currentSubSampleIndex = 0;
currentSampleScreenX++;
if (currentSampleScreenX >= screenWidth)
{
currentSampleScreenX = 0;
currentSampleScreenY++;
if (currentSampleScreenY >= screenHeight)
{
currentSampleScreenY = 0;
pass += 16;
}
}
}
float r1 = (stepX + ((float)rnd.NextDouble())) / 4f - 0.5f;
float r2 = (stepY + ((float)rnd.NextDouble())) / 4f - 0.5f;
sample.imageX = scrX + r1;
sample.imageY = scrY + r2;
//sample.Init(this,pass, valuesPerSample, false);
}
else if (pass >= MagicValue1)
{
scrX = currentSampleScreenX;
scrY = currentSampleScreenY;
currentSampleScreenX++;
if (currentSampleScreenX >= screenWidth)
{
currentSampleScreenX = 0;
currentSampleScreenY++;
if (currentSampleScreenY >= screenHeight)
{
currentSampleScreenY = 0;
pass++;
}
}
float r1 = ((float)rnd.NextDouble()) - .5f;
float r2 = ((float)rnd.NextDouble()) - .5f;
sample.imageX = scrX + r1;
sample.imageY = scrY + r2;
//sample.Init(this, pass,valuesPerSample, false);
}
else
{
// In order to update the screen faster for the first 16 passes
for (; ; )
{
int stepX = pass % 4;
int stepY = (pass / 4) % 4;
scrX = currentSampleScreenX * 4 + stepX;
scrY = currentSampleScreenY * 4 + stepY;
currentSampleScreenX++;
if (currentSampleScreenX * 4 >= screenWidth)
{
currentSampleScreenX = 0;
currentSampleScreenY++;
if (currentSampleScreenY * 4 >= screenHeight)
{
currentSampleScreenY = 0;
pass++;
}
}
// Check if we are inside the screen
if ((scrX < screenWidth) && (scrY < screenHeight))
{
// Ok, it is a valid sample
break;
}
else if (pass >= MagicValue1)
{
sample = this.GetSample(prevSample);
return sample;
}
}
float r1 = ((float)rnd.NextDouble()) - .5f;
float r2 = ((float)rnd.NextDouble()) - .5f;
sample.imageX = scrX + r1;
sample.imageY = scrY + r2;
//sample.Init(this, pass, valuesPerSample, false);
}
sample.imageY += screenStartLine;
return sample;*/
}
private Sample GetNewSample(bool regen)
{
TotalSamples++;
Sample sample = new Sample(this);
if (regen)
sample.InitSample(10 * 10);
int scrX, scrY;
if (!lowLatency || (pass >= MagicValue2))
{
// In order to improve ray coherency
int stepX = currentSubSampleIndex % SuperSamplingSize;
int stepY = currentSubSampleIndex / SuperSamplingSize;
scrX = currentSampleScreenX;
scrY = currentSampleScreenY;
currentSubSampleIndex++;
if (currentSubSampleIndex == (SamplesPerPassX4))
{
currentSubSampleIndex = 0;
currentSampleScreenX++;
if (currentSampleScreenX >= screenWidth)
{
currentSampleScreenX = 0;
currentSampleScreenY++;
if (currentSampleScreenY >= ScreenHeight)
{
currentSampleScreenY = _currentSampleScreenY;
pass += SamplesPerPassX4;
}
}
}
float r1 = (stepX + ((float)rnd.NextDouble())) / (float)SuperSamplingSize - 0.5f;
float r2 = (stepY + ((float)rnd.NextDouble())) / (float)SuperSamplingSize - 0.5f;
sample.imageX = scrX + r1;
sample.imageY = scrY + r2;
//sample.imageY += screenStartLine;
//sample.Init(this,pass, valuesPerSample, false);
}
else if (pass >= PreviewPasses)
{
scrX = currentSampleScreenX;
scrY = currentSampleScreenY;
currentSampleScreenX++;
if (currentSampleScreenX >= screenWidth)
{
currentSampleScreenX = 0;
currentSampleScreenY++;
if (currentSampleScreenY >= ScreenHeight)
{
currentSampleScreenY = _currentSampleScreenY;
pass++;
}
}
float r1 = ((float)rnd.NextDouble()) - .5f;
float r2 = ((float)rnd.NextDouble()) - .5f;
sample.imageX = scrX + r1;
sample.imageY = scrY + r2;
//sample.imageY += screenStartLine;
//sample.Init(this, pass,valuesPerSample, false);
}
else
{
// In order to update the screen faster for the first 16 passes
for (; ; )
{
int stepX = pass % SuperSamplingSize;
int stepY = (pass / SuperSamplingSize) % SuperSamplingSize;
scrX = currentSampleScreenX * SuperSamplingSize + stepX;
scrY = currentSampleScreenY * SuperSamplingSize + stepY;
currentSampleScreenX++;
if ((currentSampleScreenX * SuperSamplingSize) >= screenWidth)
{
currentSampleScreenX = 0;
currentSampleScreenY++;
if ((currentSampleScreenY * SuperSamplingSize) >= ScreenHeight)
{
currentSampleScreenY = _currentSampleScreenY;
pass++;
}
}
// Check if we are inside the screen
if ((scrX < screenWidth) && (scrY < ScreenHeight))
{
// Ok, it is a valid sample
break;
}
else if (pass >= PreviewPasses)
{
sample = this.GetNewSample(regen);
return sample;
}
}
/*
float r1 = ((float)rnd.NextDouble()) - .5f;
float r2 = ((float)rnd.NextDouble()) - .5f;
sample.imageX = scrX + r1;
sample.imageY = scrY + r2;*/
//sample.imageY += screenStartLine;
//sample.Init(this, pass, valuesPerSample, false);
}
return sample;
}
