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+ | first fog laser bounce

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TheRedShip
2025-03-04 20:43:06 +01:00
parent 74a23e9933
commit a890cca50b
5 changed files with 47 additions and 9 deletions
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42
shaders/light.glsl
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@ -2,7 +2,7 @@ hitInfo traceRay(inout Ray ray);
vec3 GetEnvironmentLight(Ray ray)
{
// return vec3(0.);
return vec3(0.);
vec3 sun_pos = vec3(-0.5, 0.5, 0.5);
float SunFocus = 1.5;
float SunIntensity = 1.;
@ -36,9 +36,37 @@ vec3 sampleSphereLight(vec3 position, GPUObject obj, int light_index, GPUMateria
Ray shadow_ray = Ray(position + light_dir * 0.001, light_dir, (1.0 / light_dir));
hitInfo shadow_hit = traceRay(shadow_ray);
if (shadow_hit.obj_index != light_index)
return vec3(0.0);
vec3 dir = normalize(vec3(-0.5, 0.2, 0.));
if (dot(shadow_ray.direction, dir) < 0.995 || shadow_hit.obj_index != light_index)
{
theta = 2.0 * M_PI * randomValue(rng_state);
phi = acos(2.0 * randomValue(rng_state) - 1.0);
sample_point = obj.position + tan(acos(0.995)) * light_dist * vec3(
sin(phi) * cos(theta),
sin(phi) * sin(theta),
cos(phi)
);
Ray light_ray = Ray(sample_point, -dir, (1.0 / -dir));
hitInfo light_ray_hit = traceRay(light_ray);
if (light_ray_hit.obj_index == -1)
return (vec3(0.0));
GPUMaterial light_ray_mat = materials[light_ray_hit.mat_index];
if (light_ray_mat.metallic == 0.)
return vec3(0.0);
Ray reflect_ray = newRay(light_ray_hit, light_ray, rng_state);
reflect_ray.inv_direction = 1.0 / reflect_ray.direction;
vec3 reflect_to_particle = normalize(position - reflect_ray.origin);
if (dot(reflect_ray.direction, reflect_to_particle) < 0.995)
return vec3(0.0);
}
float cos_theta = max(0.0, -dot(light_dir, normalize(sample_point - obj.position)));
return mat.emission * mat.color / (light_dist * light_dist) * cos_theta / (4.0 * M_PI * (obj.radius / 2.0) * (obj.radius / 2.0));
@ -59,6 +87,10 @@ vec3 sampleQuadLight(vec3 position, GPUObject obj, int light_index, GPUMaterial
if (shadow_hit.obj_index != light_index)
return vec3(0.0);
vec3 dir = normalize(vec3(-0.5, 0., 0.));
if (dot(shadow_ray.direction, dir) < 0.995)
return vec3(0.);
vec3 crossQuad = cross(obj.vertex1, obj.vertex2);
float area = length(crossQuad);
float pdf = 1.0 / area;
@ -143,8 +175,10 @@ void calculateLightColor(GPUMaterial mat, hitInfo hit, inout vec3 color, inou
else
{
vec3 mat_color = (mat.type == 3) ? getCheckerboardColor(mat, hit) : mat.color;
color *= mat_color;
light += mat.emission * mat_color;
// if (mat.emission == 0.0)
// light += sampleLights(hit.position, rng_state);
}