I have an issue with multiple objects transformations using 4x4 matrices
If the object is single, it is rendered normally, but for 2+ it has some artifacts
I think it is the issue with the procedure of matrices application (maybe I am doing it at a wrong place)
Pseudocode:
fn render(ray: Ray, coords: vec2<u32>, scan_depth: u32) {
var attenuation = 1.0;
// If I had only one transform, which I'd apply to the ray HERE,
// result would be the same as on screenshot 2, but for multiple
// chunks/transforms it won't work
for (var i = 0u; i < scan_depth; i++) {
var hit_record = HitRecord();
if chunks_hit(ray, 0.001, 3.40282347e+38, &hit_record, i) {
// ...
} else {
// ...
}
}
color_buffer[index] = vec4<f32>(vec3<f32>(0.0), 1.0);
return;
}
fn chunks_hit(ray: Ray, t_min: f32, t_max: f32, record: HitRecord, q: u32) -> bool {
var temp = HitRecord();
var hit_anything = false;
var closest_so_far = t_max;
for (var i = 0; i < CHUNK_COUNT); i++) {
// Without this condition, this won't work
// for any number of objects (screenshot 3)
if q == 0 {
ray.origin = (transforms_buffer[i].inverse_matrix * vec4<f32>(ray.origin, 1.0)).xyz;
ray.direction = (transforms_buffer[i].inverse_matrix * vec4<f32>(ray.direction, 0.0)).xyz;
}
if Chunk::hit(i, ray, t_min, closest_so_far, &temp) {
hit_anything = true;
closest_so_far = temp.t;
*record = temp;
}
}
return hit_anything;
}
