private Vector3 ShadeRec(Vector3 V, RTLight lgt, IntersectionRecord rec)
{
RTMaterial m = mSceneDatabase.GetMaterial(rec.MaterialIndex);
Vector3 r = Vector3.Zero;
float percentToUse = 1f;
if (mComputeShadow)
{
percentToUse = lgt.PercentVisible(rec.IntersectPosition, rec.GeomIndex, mSceneDatabase);
}
if (percentToUse > 0f)
{
Vector3 L = lgt.GetNormalizedDirection(rec.IntersectPosition);
float NdotL = Vector3.Dot(rec.NormalAtIntersect, L);
if (NdotL > 0)
{
Vector3 diffColor = m.GetDiffuse(mSceneDatabase, rec);
Vector3 lightColor = percentToUse * lgt.GetColor(rec.IntersectPosition);
r += diffColor * NdotL * lightColor;
Vector3 R = 2 * NdotL * rec.NormalAtIntersect - L;
float VdotR = Vector3.Dot(V, R);
if (VdotR > 0)
{
r += m.GetSpecular(mSceneDatabase, rec) * (float)Math.Pow(VdotR, m.GetN) * lightColor;
}
}
}
return(r);
}
private Vector3 ShadeRec(Vector3 V, RTLight lgt, IntersectionRecord rec)
{
RTMaterial m = mSceneDatabase.GetMaterial(rec.MaterialIndex);
Vector3 r = Vector3.Zero;
float percentToUse = 1f;
if (mComputeShadow)
percentToUse = lgt.PercentVisible(rec.IntersectPosition, rec.GeomIndex, mSceneDatabase);
if (percentToUse > 0f)
{
Vector3 L = lgt.GetNormalizedDirection(rec.IntersectPosition);
float NdotL = Vector3.Dot(rec.NormalAtIntersect, L);
if (NdotL > 0)
{
Vector3 diffColor = m.GetDiffuse(mSceneDatabase, rec);
Vector3 lightColor = percentToUse * lgt.GetColor(rec.IntersectPosition);
r += diffColor * NdotL * lightColor;
Vector3 R = 2 * NdotL * rec.NormalAtIntersect - L;
float VdotR = Vector3.Dot(V, R);
if (VdotR > 0)
r += m.GetSpecular(mSceneDatabase, rec) * (float)Math.Pow(VdotR, m.GetN) * lightColor;
}
}
return r;
}
