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Added groundwork for area lights. Added irony-mode CDB.

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This commit is contained in:
Miguel Angel Astor Romero
2017-02-07 16:41:58 -04:00
parent fd1dc0febd
commit 944ae05db7
7 changed files with 76 additions and 19 deletions
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19
path_tracer.cpp
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@@ -34,7 +34,7 @@ vec3 PathTracer::trace_ray(Ray & r, Scene * s, unsigned int rec_level) const {
// Take the intersection point and the normal of the surface at that point.
i_pos = r.m_origin + (t * r.m_direction);
n = _f->normal_at_int(r, t);
// Check if the material is not reflective/refractive.
if (!_f->m_mat->m_refract) {
// Calculate the direct lighting.
@@ -42,13 +42,18 @@ vec3 PathTracer::trace_ray(Ray & r, Scene * s, unsigned int rec_level) const {
// For every light source
vis = true;
// Cast a shadow ray to determine visibility.
sr = Ray(s->m_lights[l]->direction(i_pos), i_pos + n * BIAS);
for (size_t f = 0; f < s->m_figures.size(); f++) {
if (s->m_figures[f]->intersect(sr, _t) && _t < s->m_lights[l]->distance(i_pos)) {
vis = false;
break;
if (s->m_lights[l]->light_type() == Light::INFINITESIMAL) {
// Cast a shadow ray to determine visibility.
sr = Ray(s->m_lights[l]->direction(i_pos), i_pos + n * BIAS);
for (size_t f = 0; f < s->m_figures.size(); f++) {
if (s->m_figures[f]->intersect(sr, _t) && _t < s->m_lights[l]->distance(i_pos)) {
vis = false;
break;
}
}
} else if (s->m_lights[l]->light_type() == Light::AREA) {
// Area lights not supported with Whitted ray tracing.
vis = false;
}
// Evaluate the shading model accounting for visibility.