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~ | Emissive texture working

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TheRedShip
2025-02-02 17:10:06 +01:00
parent f03d48e62d
commit 3a70a08ea6
5 changed files with 26 additions and 27 deletions
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33
shaders/intersect.glsl
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@ -1,27 +1,28 @@
bool intersectSphere(Ray ray, GPUObject obj, out hitInfo hit)
{
vec3 oc = ray.origin - obj.position;
float b = dot(oc, ray.direction);
float c = dot(oc, oc) - obj.radius * obj.radius;
float h = b * b - c;
float t = -b - sqrt(h);
float last_t = -b + sqrt(h);
float discriminant = b * b - c;
if (t > last_t)
{
float temp = t;
t = last_t;
last_t = temp;
}
float sqrtD = sqrt(max(0.0, discriminant));
float t0 = -b - sqrtD;
float t1 = -b + sqrtD;
hit.t = t;
hit.last_t = last_t;
hit.position = ray.origin + ray.direction * t;
float temp = min(t0, t1);
t1 = max(t0, t1);
t0 = temp;
bool isInside = c < 0.0;
t0 = isInside ? t1 : t0;
hit.t = t0;
hit.last_t = t1;
hit.position = ray.origin + ray.direction * t0;
hit.normal = normalize(hit.position - obj.position);
return (h >= 0.0 && t > 0.0);
hit.normal *= (isInside ? -1.0 : 1.0);
return (discriminant >= 0.0) && (t0 > 0.0);
}
bool intersectPlane(Ray ray, GPUObject obj, out hitInfo hit)