38 lines
1,016 B
WebGPU Shading Language
Executable file
38 lines
1,016 B
WebGPU Shading Language
Executable file
struct UniformBufferObject {
|
|
resolution: vec2<f32>,
|
|
time: f32,
|
|
}
|
|
@group(0) @binding(0) var<uniform> ubo : UniformBufferObject;
|
|
|
|
@fragment fn main(
|
|
@location(0) uv : vec2<f32>
|
|
) -> @location(0) vec4<f32> {
|
|
let aspect = ubo.resolution / min(ubo.resolution.x,ubo.resolution.y);
|
|
let translated_uv = (uv - vec2(0.5,0.5)) * aspect * 2.0;
|
|
let col = f32(mandel(translated_uv)) / 100.0;
|
|
|
|
return vec4(vec3<f32>(col), 1.0);
|
|
}
|
|
|
|
fn mandel(uv: vec2<f32>) -> i32{
|
|
let zoom = 1.0;
|
|
let center_position = vec2<f32>(0.5,0.0);
|
|
let mapped_point = uv * zoom - center_position;
|
|
var z = mapped_point;
|
|
var tmp:f32;
|
|
var i:i32 = 0;
|
|
var found = false;
|
|
var res = 0;
|
|
loop {
|
|
if (i >= 100){
|
|
break;
|
|
}
|
|
tmp = z.x;
|
|
z.x = z.x * z.x - z.y * z.y + mapped_point.x;
|
|
z.y = 2. * tmp * z.y + mapped_point.y;
|
|
found = found || (z.x * z.x + z.y * z.y > 16.);
|
|
res = res + 1 * i32(!found);
|
|
i = i + 1;
|
|
}
|
|
return res;
|
|
}
|