public ShadingState getRadiance(float rx, float ry, float time, int i, int d, Ray r, IntersectionState istate, ShadingCache cache)
{
istate.time = time;
scene.trace(r, istate);
if (istate.hit())
{
ShadingState state = ShadingState.createState(istate, rx, ry, time, r, i, d, this);
state.getInstance().prepareShadingState(state);
IShader shader = getShader(state);
if (shader == null)
{
state.setResult(Color.BLACK);
return(state);
}
if (cache != null)
{
Color c = cache.lookup(state, shader);
if (c != null)
{
state.setResult(c);
return(state);
}
}
state.setResult(shader.GetRadiance(state));
if (cache != null)
{
cache.add(state, shader, state.getResult());
}
checkNanInf(state.getResult());
return(state);
}
else
{
return(null);
}
}
