public void RayTraceScene(RectangleInt viewport, Scene scene)
{
int maxsamples = (int)AntiAliasing;
// graphics2D.FillRectangle(viewport, RGBA_Floats.Black);
if (ColorBuffer == null || ColorBuffer.Length < viewport.Width || ColorBuffer[0].Length < viewport.Height)
{
ColorBuffer = new ColorF[viewport.Width][];
for (int i = 0; i < viewport.Width; i++)
{
ColorBuffer[i] = new ColorF[viewport.Height];
}
NormalBuffer = new Vector3[viewport.Width][];
for (int i = 0; i < viewport.Width; i++)
{
NormalBuffer[i] = new Vector3[viewport.Height];
}
DepthBuffer = new double[viewport.Width][];
for (int i = 0; i < viewport.Width; i++)
{
DepthBuffer[i] = new double[viewport.Height];
}
}
if (TraceWithRayBundles)
{
int yStep = 8;
int xStep = 8;
for (int y = viewport.Bottom; y < viewport.Height; y += yStep)
{
for (int x = viewport.Left; x < viewport.Right; x += xStep)
{
try
{
int bundleWidth = Math.Min(xStep, viewport.Right - x);
int bundleHeight = Math.Min(yStep, viewport.Top - y);
var rayBundle = new FrustumRayBundle(bundleWidth * bundleHeight);
var intersectionsForBundle = new IntersectInfo[bundleWidth * bundleHeight];
// Calculate all the initial rays
for (int rayY = 0; rayY < bundleHeight; rayY++)
{
for (int rayX = 0; rayX < bundleWidth; rayX++)
{
rayBundle.rayArray[rayX + rayY * bundleWidth] = scene.camera.GetRay(x + rayX, y + rayY);
intersectionsForBundle[rayX + rayY * bundleWidth] = new IntersectInfo();
}
}
// get a ray to find the origin (every ray comes from the camera and should have the same origin)
rayBundle.CalculateFrustum(bundleWidth, bundleHeight, rayBundle.rayArray[0].origin);
FullyTraceRayBundle(rayBundle, intersectionsForBundle, scene);
// get the color data out of the traced rays
for (int rayY = 0; rayY < bundleHeight; rayY++)
{
for (int rayX = 0; rayX < bundleWidth; rayX++)
{
ColorBuffer[x + rayX][y + rayY] = intersectionsForBundle[rayX + rayY * bundleWidth].TotalColor;
}
}
}
catch
{
}
}
}
}
else
{
if (MultiThreaded)
{
System.Threading.Tasks.Parallel.For(viewport.Bottom, viewport.Height, y =>
{
TraceXSpan(viewport, scene, y);
});
}
else
{
for (int y = viewport.Bottom; y < viewport.Height; y++)
{
TraceXSpan(viewport, scene, y);
}
}
}
if (AntiAliasing != AntiAliasing.None)
{
AntiAliasScene(viewport, scene, ColorBuffer, (int)AntiAliasing);
}
}
public void RayTraceScene(Graphics2D graphics2D, RectangleInt viewport, Scene scene)
{
int maxsamples = (int)AntiAliasing;
//graphics2D.FillRectangle(viewport, RGBA_Floats.Black);
if (imageBufferAsDoubles == null || imageBufferAsDoubles.Length < viewport.Width || imageBufferAsDoubles[0].Length < viewport.Height)
{
imageBufferAsDoubles = new RGBA_Floats[viewport.Width][];
for (int i = 0; i < viewport.Width; i++)
{
imageBufferAsDoubles[i] = new RGBA_Floats[viewport.Height];
}
}
IImageByte destImage = (IImageByte)graphics2D.DestImage;
if (destImage.BitDepth != 32)
{
throw new Exception("We can only render to 32 bit dest at the moment.");
}
Byte[] destBuffer = destImage.GetBuffer();
viewport.Bottom = Math.Max(0, Math.Min(destImage.Height, viewport.Bottom));
viewport.Top = Math.Max(0, Math.Min(destImage.Height, viewport.Top));
#if MULTI_THREAD
System.Threading.Tasks.Parallel.For(viewport.Bottom, viewport.Height, y => //
#else
for (int y = viewport.Bottom; y < viewport.Height; y++)
#endif
{
for (int x = viewport.Left; x < viewport.Right; x++)
{
if (traceWithRayBundles)
{
int width = Math.Min(8, viewport.Right - x);
int height = Math.Min(8, viewport.Top - y);
FrustumRayBundle rayBundle = new FrustumRayBundle(width * height);
IntersectInfo[] intersectionsForBundle = new IntersectInfo[width * height];
for (int rayY = 0; rayY < height; rayY++)
{
for (int rayX = 0; rayX < width; rayX++)
{
rayBundle.rayArray[rayX + rayY * width] = scene.camera.GetRay(x + rayX, y + rayY);
intersectionsForBundle[rayX + rayY * width] = new IntersectInfo();
}
}
rayBundle.CalculateFrustum(width, height, scene.camera.Origin);
FullyTraceRayBundle(rayBundle, intersectionsForBundle, scene);
for (int rayY = 0; rayY < height; rayY++)
{
int bufferOffset = destImage.GetBufferOffsetY(y + rayY);
for (int rayX = 0; rayX < width; rayX++)
{
imageBufferAsDoubles[x + rayX][y + rayY] = intersectionsForBundle[rayX + rayY * width].totalColor;
// we don't need to set this if we are anti-aliased
int totalOffset = bufferOffset + (x + rayX) * 4;
destBuffer[totalOffset++] = (byte)imageBufferAsDoubles[x + rayX][y + rayY].Blue0To255;
destBuffer[totalOffset++] = (byte)imageBufferAsDoubles[x + rayX][y + rayY].Green0To255;
destBuffer[totalOffset++] = (byte)imageBufferAsDoubles[x + rayX][y + rayY].Red0To255;
destBuffer[totalOffset] = 255;
}
}
x += width - 1; // skip all the pixels we bundled
y += height - 1; // skip all the pixels we bundled
}
else
{
int bufferOffset = destImage.GetBufferOffsetY(y);
Ray ray = scene.camera.GetRay(x, y);
imageBufferAsDoubles[x][y] = FullyTraceRay(ray, scene);
// we don't need to set this if we are anti-aliased
int totalOffset = bufferOffset + x * 4;
destBuffer[totalOffset++] = (byte)imageBufferAsDoubles[x][y].Blue0To255;
destBuffer[totalOffset++] = (byte)imageBufferAsDoubles[x][y].Green0To255;
destBuffer[totalOffset++] = (byte)imageBufferAsDoubles[x][y].Red0To255;
destBuffer[totalOffset] = 255;
}
}
}
#if MULTI_THREAD
);
#endif
if (AntiAliasing != AntiAliasing.None)
{
AntiAliasScene(graphics2D, viewport, scene, imageBufferAsDoubles, (int)AntiAliasing);
}
destImage.MarkImageChanged();
}
public void RayTraceScene(ImageBuffer destImage, RectangleInt viewport, Scene scene)
{
int maxsamples = (int)AntiAliasing;
//graphics2D.FillRectangle(viewport, RGBA_Floats.Black);
if (imageBufferAsDoubles == null || imageBufferAsDoubles.Length < viewport.Width || imageBufferAsDoubles[0].Length < viewport.Height)
{
imageBufferAsDoubles = new RGBA_Floats[viewport.Width][];
for (int i = 0; i < viewport.Width; i++)
{
imageBufferAsDoubles[i] = new RGBA_Floats[viewport.Height];
}
}
if (destImage.BitDepth != 32)
{
throw new Exception("We can only render to 32 bit dest at the moment.");
}
Byte[] destBuffer = destImage.GetBuffer();
viewport.Bottom = Math.Max(0, Math.Min(destImage.Height, viewport.Bottom));
viewport.Top = Math.Max(0, Math.Min(destImage.Height, viewport.Top));
#if MULTI_THREAD
System.Threading.Tasks.Parallel.For(viewport.Bottom, viewport.Height, y => //
#else
for (int y = viewport.Bottom; y < viewport.Height; y++)
#endif
{
for (int x = viewport.Left; x < viewport.Right; x++)
{
if (traceWithRayBundles)
{
int width = Math.Min(8, viewport.Right - x);
int height = Math.Min(8, viewport.Top - y);
FrustumRayBundle rayBundle = new FrustumRayBundle(width * height);
IntersectInfo[] intersectionsForBundle = new IntersectInfo[width * height];
for (int rayY = 0; rayY < height; rayY++)
{
for (int rayX = 0; rayX < width; rayX++)
{
rayBundle.rayArray[rayX + rayY * width] = scene.camera.GetRay(x + rayX, y + rayY);
intersectionsForBundle[rayX + rayY * width] = new IntersectInfo();
}
}
rayBundle.CalculateFrustum(width, height, scene.camera.Origin);
FullyTraceRayBundle(rayBundle, intersectionsForBundle, scene);
for (int rayY = 0; rayY < height; rayY++)
{
int bufferOffset = destImage.GetBufferOffsetY(y + rayY);
for (int rayX = 0; rayX < width; rayX++)
{
imageBufferAsDoubles[x + rayX][y + rayY] = intersectionsForBundle[rayX + rayY * width].totalColor;
if (AntiAliasing == AntiAliasing.None)
{
// we don't need to set this if we are anti-aliased
int totalOffset = bufferOffset + (x + rayX) * 4;
destBuffer[totalOffset++] = (byte)imageBufferAsDoubles[x + rayX][y + rayY].Blue0To255;
destBuffer[totalOffset++] = (byte)imageBufferAsDoubles[x + rayX][y + rayY].Green0To255;
destBuffer[totalOffset++] = (byte)imageBufferAsDoubles[x + rayX][y + rayY].Red0To255;
destBuffer[totalOffset] = 255;
}
}
}
x += width - 1; // skip all the pixels we bundled
y += height - 1; // skip all the pixels we bundled
}
else
{
int bufferOffset = destImage.GetBufferOffsetY(y);
Ray ray = scene.camera.GetRay(x, y);
imageBufferAsDoubles[x][y] = FullyTraceRay(ray, scene);
// we don't need to set this if we are anti-aliased
int totalOffset = bufferOffset + x * 4;
destBuffer[totalOffset++] = (byte)imageBufferAsDoubles[x][y].Blue0To255;
destBuffer[totalOffset++] = (byte)imageBufferAsDoubles[x][y].Green0To255;
destBuffer[totalOffset++] = (byte)imageBufferAsDoubles[x][y].Red0To255;
destBuffer[totalOffset] = 255;
}
}
}
public void RayTraceScene(RectangleInt viewport, Scene scene)
{
int maxsamples = (int)AntiAliasing;
//graphics2D.FillRectangle(viewport, RGBA_Floats.Black);
if (colorBuffer == null || colorBuffer.Length < viewport.Width || colorBuffer[0].Length < viewport.Height)
{
colorBuffer = new RGBA_Floats[viewport.Width][];
for (int i = 0; i < viewport.Width; i++)
{
colorBuffer[i] = new RGBA_Floats[viewport.Height];
}
normalBuffer = new Vector3[viewport.Width][];
for (int i = 0; i < viewport.Width; i++)
{
normalBuffer[i] = new Vector3[viewport.Height];
}
depthBuffer = new double[viewport.Width][];
for (int i = 0; i < viewport.Width; i++)
{
depthBuffer[i] = new double[viewport.Height];
}
}
#if MULTI_THREAD
System.Threading.Tasks.Parallel.For(viewport.Bottom, viewport.Height, y => //
#else
for (int y = viewport.Bottom; y < viewport.Height; y++)
#endif
{
for (int x = viewport.Left; x < viewport.Right; x++)
{
if (traceWithRayBundles)
{
int width = Math.Min(8, viewport.Right - x);
int height = Math.Min(8, viewport.Top - y);
FrustumRayBundle rayBundle = new FrustumRayBundle(width * height);
IntersectInfo[] intersectionsForBundle = new IntersectInfo[width * height];
for (int rayY = 0; rayY < height; rayY++)
{
for (int rayX = 0; rayX < width; rayX++)
{
rayBundle.rayArray[rayX + rayY * width] = scene.camera.GetRay(x + rayX, y + rayY);
intersectionsForBundle[rayX + rayY * width] = new IntersectInfo();
}
}
// get a ray to find the origin (every ray comes from the camera and should have the same origin)
Ray screenRay = scene.camera.GetRay(0, 0);
rayBundle.CalculateFrustum(width, height, screenRay.origin);
FullyTraceRayBundle(rayBundle, intersectionsForBundle, scene);
for (int rayY = 0; rayY < height; rayY++)
{
for (int rayX = 0; rayX < width; rayX++)
{
colorBuffer[x + rayX][y + rayY] = intersectionsForBundle[rayX + rayY * width].totalColor;
}
}
x += width - 1; // skip all the pixels we bundled
y += height - 1; // skip all the pixels we bundled
}
else
{
Ray ray = scene.camera.GetRay(x, y);
IntersectInfo primaryInfo;
colorBuffer[x][y] = FullyTraceRay(ray, scene, out primaryInfo);
if (false)
{
if (primaryInfo != null)
{
normalBuffer[x][y] = primaryInfo.normalAtHit;
depthBuffer[x][y] = primaryInfo.distanceToHit;
}
else
{
normalBuffer[x][y] = Vector3.UnitZ;
depthBuffer[x][y] = double.PositiveInfinity;
}
}
}
}
}
#if MULTI_THREAD
);
#endif
if (AntiAliasing != AntiAliasing.None)
{
AntiAliasScene(viewport, scene, colorBuffer, (int)AntiAliasing);
}
}