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Add initial MIS implementation

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This commit is contained in:
hal8174 2025-01-05 23:52:41 +01:00
parent ba2d853319
commit d43d60bb85
10 changed files with 161 additions and 3 deletions
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7
ray-tracing-scene/src/acceleration_structure/mod.rs
View file

@ -83,11 +83,18 @@ impl<A: AccelerationStructure<u32>, R: Rng> Scene<R> for AccelerationStructureSc
let material = &self.materials[i as usize];
let light_pdf = if let Some(l) = &material.light {
0.0
} else {
0.0
};
Some(Intersection::new(
t,
n,
material.material.as_deref(),
material.light.as_deref(),
light_pdf,
))
}

1
ray-tracing-scene/src/basic_scene.rs
View file

@ -37,6 +37,7 @@ impl<R: Rng> Scene<R> for BasicScene {
((ray.start() + d * ray.dir()) - c).normalize(),
Some(&DefaultMaterial {}),
None,
0.0,
);
if d >= min && d <= max {
if let Some(i) = intersection.as_ref() {

7
ray-tracing-scene/src/triangle_bvh.rs
View file

@ -329,13 +329,16 @@ impl<R: Rng> Scene<R> for TriangleBVH<R> {
let triangle = self.triangles[i as usize];
let material = &self.materials[triangle.material as usize];
let n = triangle_normal(self.get_vertices_from_index(i)).normalize();
let n = triangle_normal(self.get_vertices_from_index(i));
let area = n.length() * 0.5;
Some(Intersection::new(
t,
n,
n.normalize(),
material.material.as_deref(),
material.light.as_deref(),
1.0 / ((self.lights.len() as Float) * area),
))
}