private void DoAntialiasPass2(RTScanLineJob job)
{
Bitmap image = job.RenderImage;
int i, j, n = 0;
double colourDiffThreshold = 5;
// second pass - now on individual pixel level
int imgX;
int imgY;
lock (job.Semaphore)
{
imgX = image.Width;
imgY = image.Height;
}
Console.WriteLine("Antialiasing second pass...");
foreach (int line in job.LinesList)
{
for (j = line; j < line + this.samplesPerCell; j++) // at this point we only get every second line to process
{
n = 0; // count rays
for (i = 0; i < imgX - 1; i++)
{
// determine if there are differences in colour between neighbouring pixels. If no - then colour all pixels the same
// otherwise - launch additional samples
Color p00, p01, p11, p10;
lock (job.Semaphore)
{
p00 = image.GetPixel(i, imgY - j - 1);
p10 = image.GetPixel(i + 1, imgY - j - 1);
p11 = image.GetPixel(i + 1, Math.Max(imgY - (j + 1) - 1, 0));
p01 = image.GetPixel(i, Math.Max(imgY - (j + 1) - 1, 0));
}
if (ColorHelper.ColorDifference(p00, p10) < colourDiffThreshold &&
ColorHelper.ColorDifference(p00, p11) < colourDiffThreshold &&
ColorHelper.ColorDifference(p00, p01) < colourDiffThreshold &&
this.Quality != RenderQuality.UltraHigh) // for UltraHigh quality do multismapling regardless of colour difference
{
// do nothing
}
else
{
Color sAvg;
if (this.Quality != RenderQuality.UltraHigh)
{
var s10 = job.RayTracer.Calculate((double)i + 0.5, (double)j);
var s11 = job.RayTracer.Calculate((double)i + 0.5, (double)j + 0.5);
var s01 = job.RayTracer.Calculate((double)i, (double)j + 0.5);
n += 3;
sAvg = Color.FromArgb(
(p00.R + s10.R + s11.R + s01.R) / 4,
(p00.G + s10.G + s11.G + s01.G) / 4,
(p00.B + s10.B + s11.B + s01.B) / 4);
}
else // UltraHigh - multi-sampling
{
int nRays = 4;
int rAcc = 0;
int gAcc = 0;
int bAcc = 0;
for (int k = 0; k < nRays; k++)
{
for (int l = 0; l < nRays; l++)
{
var rayColor = job.RayTracer.Calculate((double)i + (double)k / (double)nRays, (double)j + (double)l / (double)nRays);
rAcc += rayColor.R;
gAcc += rayColor.G;
bAcc += rayColor.B;
n++;
}
}
sAvg = Color.FromArgb(
rAcc / nRays / nRays,
gAcc / nRays / nRays,
bAcc / nRays / nRays);
}
lock (job.Semaphore)
{
image.SetPixel(i, imgY - j - 1, sAvg);
}
}
}
Console.WriteLine("Job {0}: Line {1} antialiased, {2} rays", job.JobId, j, n);
}
}
}
private void DoAntialiasPass2(RTScanLineJob job)
{
Bitmap image = job.RenderImage;
int i, j, n = 0;
double colourDiffThreshold = 5;
// second pass - now on individual pixel level
int imgX;
int imgY;
lock (job.Semaphore)
{
imgX = image.Width;
imgY = image.Height;
}
Console.WriteLine("Antialiasing second pass...");
foreach (int line in job.LinesList)
{
for (j = line; j < line + this.samplesPerCell; j++) // at this point we only get every second line to process
{
n = 0; // count rays
for (i = 0; i < imgX - 1; i++)
{
// determine if there are differences in colour between neighbouring pixels. If no - then colour all pixels the same
// otherwise - launch additional samples
Color p00, p01, p11, p10;
lock (job.Semaphore)
{
p00 = image.GetPixel(i, imgY - j - 1);
p10 = image.GetPixel(i + 1, imgY - j - 1);
p11 = image.GetPixel(i + 1, Math.Max(imgY - (j + 1) - 1, 0));
p01 = image.GetPixel(i, Math.Max(imgY - (j + 1) - 1, 0));
}
if (ColorHelper.ColorDifference(p00, p10) < colourDiffThreshold
&& ColorHelper.ColorDifference(p00, p11) < colourDiffThreshold
&& ColorHelper.ColorDifference(p00, p01) < colourDiffThreshold
&& this.Quality != RenderQuality.UltraHigh) // for UltraHigh quality do multismapling regardless of colour difference
{
// do nothing
}
else
{
Color sAvg;
if (this.Quality != RenderQuality.UltraHigh)
{
var s10 = job.RayTracer.Calculate((double)i + 0.5, (double)j);
var s11 = job.RayTracer.Calculate((double)i + 0.5, (double)j + 0.5);
var s01 = job.RayTracer.Calculate((double)i, (double)j + 0.5);
n += 3;
sAvg = Color.FromArgb(
(p00.R + s10.R + s11.R + s01.R) / 4,
(p00.G + s10.G + s11.G + s01.G) / 4,
(p00.B + s10.B + s11.B + s01.B) / 4);
}
else // UltraHigh - multi-sampling
{
int nRays = 4;
int rAcc = 0;
int gAcc = 0;
int bAcc = 0;
for (int k = 0; k < nRays; k++)
{
for (int l = 0; l < nRays; l++)
{
var rayColor = job.RayTracer.Calculate((double)i + (double)k / (double)nRays, (double)j + (double)l / (double)nRays);
rAcc += rayColor.R;
gAcc += rayColor.G;
bAcc += rayColor.B;
n++;
}
}
sAvg = Color.FromArgb(
rAcc / nRays / nRays,
gAcc / nRays / nRays,
bAcc / nRays / nRays);
}
lock (job.Semaphore)
{
image.SetPixel(i, imgY - j - 1, sAvg);
}
}
}
Console.WriteLine("Job {0}: Line {1} antialiased, {2} rays", job.JobId, j, n);
}
}
}
private void DoAntialiasPass1(RTScanLineJob job)
{
Bitmap image = job.RenderImage;
int i, n = 0;
double colourDiffThreshold = 5;
// first pass
Console.WriteLine("Antialiasing first pass...");
int imgX;
int imgY;
lock (job.Semaphore)
{
imgX = image.Width;
imgY = image.Height;
}
foreach (int j in job.LinesList)
{
n = 0; // count rays
for (i = 0; i < imgX - this.samplesPerCell; i += this.samplesPerCell)
{
// determine if there are differences in colour between neighbouring pixels. If no - then colour all pixels the same
// otherwise - launch additional samples
Color p00, p01, p11, p10;
lock (job.Semaphore)
{
p00 = image.GetPixel(i, imgY - j - 1);
// check if we hit an empty pixel - if yes, then skip to next line
if (p00.A == 0)
{
break;
}
p10 = image.GetPixel(i + samplesPerCell, imgY - j - 1);
p11 = image.GetPixel(i + samplesPerCell, Math.Max(imgY - (j + samplesPerCell) - 1, 0));
p01 = image.GetPixel(i, Math.Max(imgY - (j + samplesPerCell) - 1, 0));
}
if (ColorHelper.ColorDifference(p00, p10) < colourDiffThreshold &&
ColorHelper.ColorDifference(p00, p11) < colourDiffThreshold &&
ColorHelper.ColorDifference(p00, p01) < colourDiffThreshold)
{
for (int y = j; y < j + samplesPerCell; y++)
{
for (int x = i; x < i + samplesPerCell; x++)
{
lock (job.Semaphore)
{
image.SetPixel(x, imgY - y - 1, p00);
}
}
}
}
else
{
for (int y = j; y < j + samplesPerCell; y++)
{
for (int x = i; x < i + samplesPerCell; x++)
{
if (!(x == i && y == j))
{
var pixel = job.RayTracer.Calculate(x, y);
n++;
lock (job.Semaphore)
{
image.SetPixel(x, imgY - y - 1, pixel);
}
}
}
}
}
}
Console.WriteLine("Job {0}: Line {1} antialiased, {2} rays", job.JobId, j, n);
}
}
private void DoAntialiasPass1(RTScanLineJob job)
{
Bitmap image = job.RenderImage;
int i, n = 0;
double colourDiffThreshold = 5;
// first pass
Console.WriteLine("Antialiasing first pass...");
int imgX;
int imgY;
lock (job.Semaphore)
{
imgX = image.Width;
imgY = image.Height;
}
foreach (int j in job.LinesList)
{
n = 0; // count rays
for (i = 0; i < imgX - this.samplesPerCell; i += this.samplesPerCell)
{
// determine if there are differences in colour between neighbouring pixels. If no - then colour all pixels the same
// otherwise - launch additional samples
Color p00, p01, p11, p10;
lock (job.Semaphore)
{
p00 = image.GetPixel(i, imgY - j - 1);
// check if we hit an empty pixel - if yes, then skip to next line
if (p00.A == 0)
{
break;
}
p10 = image.GetPixel(i + samplesPerCell, imgY - j - 1);
p11 = image.GetPixel(i + samplesPerCell, Math.Max(imgY - (j + samplesPerCell)-1, 0));
p01 = image.GetPixel(i, Math.Max(imgY - (j + samplesPerCell) - 1, 0));
}
if (ColorHelper.ColorDifference(p00, p10) < colourDiffThreshold
&& ColorHelper.ColorDifference(p00, p11) < colourDiffThreshold
&& ColorHelper.ColorDifference(p00, p01) < colourDiffThreshold)
{
for(int y = j; y < j+samplesPerCell; y++)
for (int x = i; x < i + samplesPerCell; x++)
{
lock (job.Semaphore)
{
image.SetPixel(x, imgY - y - 1, p00);
}
}
}
else
{
for (int y = j; y < j + samplesPerCell; y++)
for (int x = i; x < i + samplesPerCell; x++)
{
if (!(x == i && y == j))
{
var pixel = job.RayTracer.Calculate(x, y);
n++;
lock (job.Semaphore)
{
image.SetPixel(x, imgY - y - 1, pixel);
}
}
}
}
}
Console.WriteLine("Job {0}: Line {1} antialiased, {2} rays", job.JobId, j, n);
}
}