private void Working()
{
RTMath.ThreadInitRnd();
for (int i = 0; i < pIndex; ++i)
{
if (IsDestroied)
{
return;
}
Item item = items[i];
Color color = Color.black;
for (int s = 0; s < numSamples; ++s)
{
float u = (item.i + RTMath.Rnd01()) / canvasWidth;
float v = (item.j + RTMath.Rnd01()) / canvasHeight;
RTRay ray = cam.GetRay(u, v);
color += renderer.GetColor(ray, 0);
}
color /= numSamples;
item.finalColor = color;
items[i] = item;
}
status = STATUS_COMPLETE;
}
public override bool Scatter(RTRay ray, HitRecord hit, out Color attenuation, out RTRay scattered)
{
attenuation = new Color(1, 1, 1);
Vector3 outwardN;
float ni_over_nt;
Vector3 refracted;
float reflect_prob;
float cosine;
if (Vector3.Dot(ray.direction, hit.n) > 0)
{
outwardN = -hit.n;
ni_over_nt = refractiveIndex;
cosine = Vector3.Dot(ray.direction, hit.n) / ray.direction.magnitude;
}
else
{
outwardN = hit.n;
ni_over_nt = 1.0f / refractiveIndex;
cosine = -Vector3.Dot(ray.direction, hit.n) / ray.direction.magnitude;
}
if (RTMath.Refract(ray.direction, outwardN, ni_over_nt, out refracted))
{
reflect_prob = RTMath.schlick(cosine, refractiveIndex);
}
else
{
reflect_prob = 1.0f;
}
if (RTMath.Rnd01() < reflect_prob)
{
scattered = new RTRay().Set(hit.p, RTMath.Reflect(ray.direction, hit.n));
}
else
{
scattered = new RTRay().Set(hit.p, refracted);
}
return(true);
}
protected override void Awake()
{
base.Awake();
numSamples = 5;
isScreenSize = true;
ppmTexture.sRGB = true;
scene = new HitableList();
scene.list.Add(new RTSphere().Set(new Vector3(0, -1000, 0), 1000).SetMaterial <RTSphere>(new Lambertian().SetAlbedo <Lambertian>(new Color(0.5f, 0.5f, 0.5f))));
for (int a = -11; a < 11; ++a)
{
for (int b = -11; b < 11; ++b)
{
float rnd = RTMath.Rnd01();
Vector3 center = new Vector3(a + 0.9f * rnd, 0.2f, b + 0.9f * rnd);
if ((center - new Vector3(4, 0.2f, 0)).magnitude > 0.9f)
{
if (rnd < 0.6f)
{
scene.list.Add(new RTSphere().Set(center, 0.2f).SetMaterial <RTSphere>(new Lambertian().SetAlbedo <Lambertian>(new Color(RTMath.Rnd01(), RTMath.Rnd01(), RTMath.Rnd01()))));
}
else if (rnd < 0.9f)
{
scene.list.Add(new RTSphere().Set(center, 0.2f).SetMaterial <RTSphere>(new Metal().SetAlbedo <Metal>(new Color(0.5f * (1 + RTMath.Rnd01()), 0.5f * (1 + RTMath.Rnd01()), 0.5f * (1 + RTMath.Rnd01()))).SetFuzz(0.5f * RTMath.Rnd01())));
}
else
{
scene.list.Add(new RTSphere().Set(center, 0.2f).SetMaterial <RTSphere>(new Dielectric().SetRefractiveIndex(1.5f)));
}
}
}
}
scene.list.Add(new RTSphere().Set(new Vector3(0, 1, 0), 1).SetMaterial <RTSphere>(new Dielectric().SetRefractiveIndex(1.5f)));
scene.list.Add(new RTSphere().Set(new Vector3(-4, 1, 0), 1).SetMaterial <RTSphere>(new Lambertian().SetAlbedo <Lambertian>(new Color(0.4f, 0.2f, 0.1f))));
scene.list.Add(new RTSphere().Set(new Vector3(4, 1, 0), 1).SetMaterial <RTSphere>(new Metal().SetAlbedo <Metal>(new Color(0.7f, 0.6f, 0.5f)).SetFuzz(0.0f)));
}
protected virtual void Start()
{
int canvasWidth = isScreenSize ? Screen.width : 200;
int canvasHeight = isScreenSize ? Screen.height : 100;
cam = CreateCamera(canvasWidth, canvasHeight);
ppmTexture.Init(canvasWidth, canvasHeight);
renderingTasksManager = new RenderingTasksManager();
int pixelIndex = 0;
RenderingTask task = null;
int itemsCount = 0;
for (int j = 0; j < ppmTexture.Height; ++j)
{
for (int i = 0; i < ppmTexture.Width; ++i)
{
if (multiThreadRendering)
{
if (itemsCount == 0)
{
task = new RenderingTask();
task.Init(this, cam, ppmTexture.Width, ppmTexture.Height, numSamples);
renderingTasksManager.AddTask(task, RenderingTaskCompleteCB);
}
task.AddItem(i, j, pixelIndex);
++itemsCount;
if (itemsCount == RenderingTask.SIZE)
{
itemsCount = 0;
}
++pixelIndex;
}
else
{
Color color = Color.black;
for (int s = 0; s < numSamples; ++s)
{
float u = (i + RTMath.Rnd01()) / ppmTexture.Width;
float v = (j + RTMath.Rnd01()) / ppmTexture.Height;
RTRay ray = cam.GetRay(u, v);
color += GetColor(ray, 0);
}
color /= numSamples;
ppmTexture.WriteAPixel(color);
}
}
}
if (!multiThreadRendering)
{
ppmTexture.Complete();
RenderingComplete();
}
else
{
renderingTasksManager.Start();
}
}