public Color getGlobalRadiance(ShadingState state)
{
if (globalPhotonMap == null)
{
if (state.getShader() != null)
return state.getShader().getRadiance(state);
else
return Color.BLACK;
}
else
return globalPhotonMap.getRadiance(state.getPoint(), state.getNormal());
}
public Color GetRadiance(ShadingState state)
{
if (state.getNormal() == null)
{
// if this shader has been applied to an infinite instance because of shader overrides
// run the default shader, otherwise, just shade black
return(state.getShader() != this ? state.getShader().GetRadiance(state) : Color.BLACK);
}
// make sure we are on the right side of the material
state.faceforward();
// setup lighting
state.initLightSamples();
state.initCausticSamples();
return(state.diffuse(Color.GRAY));
}
public Color GetRadiance(ShadingState state)
{
if (state.getNormal() == null)
{
// if this shader has been applied to an infinite instance because of shader overrides
// run the default shader, otherwise, just shade black
return state.getShader() != this ? state.getShader().GetRadiance(state) : Color.BLACK;
}
// make sure we are on the right side of the material
state.faceforward();
// setup lighting
state.initLightSamples();
state.initCausticSamples();
return state.diffuse(Color.GRAY);
}
public Color getGlobalRadiance(ShadingState state)
{
if (globalPhotonMap == null)
{
if (state.getShader() != null)
{
return(state.getShader().GetRadiance(state));
}
else
{
return(Color.BLACK);
}
}
else
{
return(globalPhotonMap.getRadiance(state.getPoint(), state.getNormal()));
}
}
public Color getIrradiance(ShadingState state, Color diffuseReflectance)
{
if (samples <= 0)
{
return(Color.BLACK);
}
// compute new sample
Color irr = Color.black();
OrthoNormalBasis onb = state.getBasis();
Vector3 w = new Vector3();
int n = state.getDiffuseDepth() == 0 ? samples : 1;
for (int i = 0; i < n; i++)
{
float xi = (float)state.getRandom(i, 0, n);
float xj = (float)state.getRandom(i, 1, n);
float phi = (float)(xi * 2 * Math.PI);
float cosPhi = (float)Math.Cos(phi);
float sinPhi = (float)Math.Sin(phi);
float sinTheta = (float)Math.Sqrt(xj);
float cosTheta = (float)Math.Sqrt(1.0f - xj);
w.x = cosPhi * sinTheta;
w.y = sinPhi * sinTheta;
w.z = cosTheta;
onb.transform(w);
ShadingState temp = state.traceFinalGather(new Ray(state.getPoint(), w), i);
if (temp != null)
{
temp.getInstance().prepareShadingState(temp);
if (temp.getShader() != null)
{
irr.add(temp.getShader().getRadiance(temp));
}
}
}
irr.mul((float)Math.PI / n);
return(irr);
}
public void set(ShadingState state)
{
if (state == null)
{
c = Color.BLACK;
}
else
{
c = state.getResult();
checkNanInf();
shader = state.getShader();
instance = state.getInstance();
if (state.getNormal() != null)
{
nx = state.getNormal().x;
ny = state.getNormal().y;
nz = state.getNormal().z;
}
}
n = 1;
}
private IShader getShader(ShadingState state)
{
return shaderOverride != null ? shaderOverride : state.getShader();
}
private IShader getPhotonShader(ShadingState state)
{
return (shaderOverride != null && shaderOverridePhotons) ? shaderOverride : state.getShader();
}
public override Color getFillColor(ShadingState state)
{
return ambocc ? state.occlusion(16, 6.0f) : state.getShader().getRadiance(state);
}
public override Color getFillColor(ShadingState state)
{
return(ambocc ? state.occlusion(16, 6.0f) : state.getShader().getRadiance(state));
}
public Color getIrradiance(ShadingState state, Color diffuseReflectance)
{
float b = (float)Math.PI * c / diffuseReflectance.getMax();
Color irr = Color.black();
Point3 p = state.getPoint();
Vector3 n = state.getNormal();
int set = (int)(state.getRandom(0, 1, 1) * numSets);
foreach (PointLight vpl in virtualLights[set])
{
Ray r = new Ray(p, vpl.p);
float dotNlD = -(r.dx * vpl.n.x + r.dy * vpl.n.y + r.dz * vpl.n.z);
float dotND = r.dx * n.x + r.dy * n.y + r.dz * n.z;
if (dotNlD > 0 && dotND > 0)
{
float r2 = r.getMax() * r.getMax();
Color opacity = state.traceShadow(r);
Color power = Color.blend(vpl.power, Color.BLACK, opacity);
float g = (dotND * dotNlD) / r2;
irr.madd(0.25f * Math.Min(g, b), power);
}
}
// bias compensation
int nb = (state.getDiffuseDepth() == 0 || numBias <= 0) ? numBias : 1;
if (nb <= 0)
{
return(irr);
}
OrthoNormalBasis onb = state.getBasis();
Vector3 w = new Vector3();
float scale = (float)Math.PI / nb;
for (int i = 0; i < nb; i++)
{
float xi = (float)state.getRandom(i, 0, nb);
float xj = (float)state.getRandom(i, 1, nb);
float phi = (float)(xi * 2 * Math.PI);
float cosPhi = (float)Math.Cos(phi);
float sinPhi = (float)Math.Sin(phi);
float sinTheta = (float)Math.Sqrt(xj);
float cosTheta = (float)Math.Sqrt(1.0f - xj);
w.x = cosPhi * sinTheta;
w.y = sinPhi * sinTheta;
w.z = cosTheta;
onb.transform(w);
Ray r = new Ray(state.getPoint(), w);
r.setMax((float)Math.Sqrt(cosTheta / b));
ShadingState temp = state.traceFinalGather(r, i);
if (temp != null)
{
temp.getInstance().prepareShadingState(temp);
if (temp.getShader() != null)
{
float dist = temp.getRay().getMax();
float r2 = dist * dist;
float cosThetaY = -Vector3.dot(w, temp.getNormal());
if (cosThetaY > 0)
{
float g = (cosTheta * cosThetaY) / r2;
// was this path accounted for yet?
if (g > b)
{
irr.madd(scale * (g - b) / g, temp.getShader().GetRadiance(temp));
}
}
}
}
}
return(irr);
}
public void set(ShadingState state)
{
if (state == null)
c = Color.BLACK;
else
{
c = state.getResult();
shader = state.getShader();
instance = state.getInstance();
if (state.getNormal() != null)
{
nx = state.getNormal().x;
ny = state.getNormal().y;
nz = state.getNormal().z;
}
alpha = state.getInstance() == null ? 0 : 1;
}
n = 1;
}
