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More photons.

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Wally Hackenslacker
2017-03-15 15:55:35 -04:00
parent c29d64583f
commit 811e0a0602
4 changed files with 26 additions and 36 deletions
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43
photon_tracer.cpp
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@@ -40,6 +40,7 @@ vec3 PhotonTracer::trace_ray(Ray & r, Scene * s, unsigned int rec_level) const {
AreaLight * al;
Vec3 mn, mx;
vector<Photon> photons;
vector<Photon> caustics;
t = numeric_limits<float>::max();
_f = NULL;
@@ -120,14 +121,19 @@ vec3 PhotonTracer::trace_ray(Ray & r, Scene * s, unsigned int rec_level) const {
// mx = Vec3(i_pos.x + radius, i_pos.y + radius, i_pos.z + radius);
// }
m_photon_map.find_by_distance(photons, i_pos, n, m_h_radius, 1000);
for (vector<Photon>::iterator it = photons.begin(); it != photons.end(); it++) {
(*it).getColor(red, green, blue);
p_contrib += (_f->m_mat->m_diffuse / pi<float>()) * vec3(red, green, blue);
m_caustics_map.find_by_distance(caustics, i_pos, n, m_h_radius, 1000);
for (Photon p : photons) {
p.getColor(red, green, blue);
p_contrib += vec3(red, green, blue);
}
p_contrib /= (1.0f / pi<float>()) / (m_h_radius * m_h_radius);
// color += (1.0f - _f->m_mat->m_rho) * (((dir_diff_color) * (_f->m_mat->m_diffuse / pi<float>())) +
// (_f->m_mat->m_specular * dir_spec_color) + p_contrib);
for (Photon p : caustics) {
p.getColor(red, green, blue);
p_contrib += vec3(red, green, blue);
}
p_contrib *= (1.0f / pi<float>()) / (m_h_radius * m_h_radius);
// color += (1.0f - _f->m_mat->m_rho) * (((dir_diff_color + p_contrib) * (_f->m_mat->m_diffuse / pi<float>())) +
// (_f->m_mat->m_specular * dir_spec_color));
color += p_contrib;
// Determine the specular reflection color.
@@ -154,7 +160,6 @@ vec3 PhotonTracer::trace_ray(Ray & r, Scene * s, unsigned int rec_level) const {
color += (1.0f - kr) * trace_ray(rr, s, rec_level + 1);
} else if (rec_level >= m_max_depth)
return vec3(0.0f);
}
// Return final color.
@@ -165,7 +170,6 @@ vec3 PhotonTracer::trace_ray(Ray & r, Scene * s, unsigned int rec_level) const {
}
void PhotonTracer::photon_tracing(Scene * s, const size_t n_photons_per_ligth, const bool specular) {
Light * l;
AreaLight * al = NULL;
PointLight * pl = NULL;
vec3 l_sample, s_normal, h_sample, power;
@@ -175,18 +179,18 @@ void PhotonTracer::photon_tracing(Scene * s, const size_t n_photons_per_ligth, c
uint64_t total = 0, current = 0;
vector<Figure *> spec_figures;
for (vector<Light *>::iterator it = s->m_lights.begin(); it != s->m_lights.end(); it++) {
total += (*it)->light_type() == Light::AREA ||
((*it)->light_type() == Light::INFINITESIMAL &&
(dynamic_cast<SpotLight *>((*it)) == NULL || dynamic_cast<DirectionalLight *>((*it)) == NULL)) ? 1 : 0;
for (Light * light : s->m_lights) {
total += light->light_type() == Light::AREA ||
(light->light_type() == Light::INFINITESIMAL &&
(dynamic_cast<SpotLight *>(light) == NULL || dynamic_cast<DirectionalLight *>(light) == NULL)) ? 1 : 0;
}
total *= static_cast<uint64_t>(n_photons_per_ligth);
// Separate specular objects to build the caustics photon map.
if (specular) {
for (vector<Figure *>::iterator it = s->m_figures.begin(); it != s->m_figures.end(); it++)
if ((*it)->m_mat->m_refract || (*it)->m_mat->m_rho > 0.0f)
spec_figures.push_back((*it));
for (Figure * sf : s->m_figures)
if (sf->m_mat->m_refract || sf->m_mat->m_rho > 0.0f)
spec_figures.push_back(sf);
if (spec_figures.size() == 0) {
cout << ANSI_BOLD_YELLOW << "There are no specular objects in the scene." << ANSI_RESET_STYLE << endl;
@@ -198,9 +202,7 @@ void PhotonTracer::photon_tracing(Scene * s, const size_t n_photons_per_ligth, c
}
cout << "Tracing a total of " << ANSI_BOLD_YELLOW << total << ANSI_RESET_STYLE << " primary photons:" << endl;
for (vector<Light *>::iterator it = s->m_lights.begin(); it != s->m_lights.end(); it++) {
l = *it;
for (Light * l : s->m_lights) {
/* Only area lights and point lights supported right now. */
if (l->light_type() == Light::INFINITESIMAL && (dynamic_cast<SpotLight *>(l) != NULL || dynamic_cast<DirectionalLight *>(l) != NULL))
continue;
@@ -306,6 +308,7 @@ void PhotonTracer::trace_photon(Photon & ph, Scene * s, const unsigned int rec_l
t = numeric_limits<float>::max();
_f = NULL;
ph.getColor(red, green, blue);
// Find the closest intersecting surface.
r = Ray(ph.direction.x, ph.direction.y, ph.direction.z, ph.position.x, ph.position.y, ph.position.z);
@@ -334,7 +337,6 @@ void PhotonTracer::trace_photon(Photon & ph, Scene * s, const unsigned int rec_l
sample = sample_hemisphere(r1, r2);
rotate_sample(sample, n);
normalize(sample);
ph.getColor(red, green, blue);
color = (1.0f - _f->m_mat->m_rho) * (vec3(red, green, blue) * (_f->m_mat->m_diffuse / pi<float>()));
p_pos = Vec3(i_pos.x, i_pos.y, i_pos.z);
p_dir = Vec3(sample.x, sample.y, sample.z);
@@ -354,6 +356,7 @@ void PhotonTracer::trace_photon(Photon & ph, Scene * s, const unsigned int rec_l
}
} else if (_f->m_mat->m_refract && rec_level < m_max_depth) {
// If the material has transmission enabled, calculate the Fresnel term.
kr = fresnel(r.m_direction, n, ph.ref_index, _f->m_mat->m_ref_index);