Raycasting and sdfs with webgpu

[Oserebameh]

View on PC/Desktop here: https://ray-tracing-in-one-weekend.vercel.app/

[PavelBoytchev]

Any chance to view it without signup/login to Vercel?

[Usnul]

I believe the thing is behind access control

[Oserebameh]

Thanks for pointing that out. I’ve cleared it up. It was a mistake on my end. Please let me know, if it works on your end.

[Oserebameh]

Sorry about that. Its open now. Please let me know if it works on your end

[Usnul]

works now. Might be a good idea to explain what we’re seeing here.

I assume there are 3 analytical spheres here with a smooth union operation?

float opSmoothUnion( float d1, float d2, float k )
{
    float h = clamp( 0.5 + 0.5*(d2-d1)/k, 0.0, 1.0 );
    return mix( d2, d1, h ) - k*h*(1.0-h);
}

[Oserebameh]

Exactly!
And I’m using for(var i: i32; i < sphere_count; i++) { let t = hit_sphere(spheres[i], 0.5, ray_origin, ray_direction); if (t > 0.0) { hit_point = ray_origin + t * ray_direction; normal = normalize(hit_point - spheres[i]); return 0.5 * (normal + vec3f(1.0, 1.0, 1.0)); // Simple shading based on normal } }ray color.
t is the distance along the ray from the origin to an intersection .

Sorry about the formatting, I don’t know how to remove the whitespace.

[Usnul]

try three backticks, like so

You’ll get

some code goes
here