49 lines
1.3 KiB
WebGPU Shading Language
49 lines
1.3 KiB
WebGPU Shading Language
struct Time {
|
|
value : f32;
|
|
}
|
|
|
|
struct Uniforms {
|
|
scale : f32;
|
|
offsetX : f32;
|
|
offsetY : f32;
|
|
scalar : f32;
|
|
scalarOffset : f32;
|
|
}
|
|
|
|
@binding(0) @group(0) var<uniform> time : Time;
|
|
|
|
@binding(1) @group(0) var<uniform> uniforms : Uniforms;
|
|
|
|
struct VertexOutput {
|
|
@builtin(position)
|
|
Position : vec4<f32>;
|
|
@location(0)
|
|
v_color : vec4<f32>;
|
|
}
|
|
|
|
@stage(vertex)
|
|
fn vert_main(@location(0) position : vec4<f32>, @location(1) color : vec4<f32>) -> VertexOutput {
|
|
var fade : f32 = ((uniforms.scalarOffset + ((time.value * uniforms.scalar) / 10.0)) % 1.0);
|
|
if ((fade < 0.5)) {
|
|
fade = (fade * 2.0);
|
|
} else {
|
|
fade = ((1.0 - fade) * 2.0);
|
|
}
|
|
var xpos : f32 = (position.x * uniforms.scale);
|
|
var ypos : f32 = (position.y * uniforms.scale);
|
|
var angle : f32 = ((3.141590118 * 2.0) * fade);
|
|
var xrot : f32 = ((xpos * cos(angle)) - (ypos * sin(angle)));
|
|
var yrot : f32 = ((xpos * sin(angle)) + (ypos * cos(angle)));
|
|
xpos = (xrot + uniforms.offsetX);
|
|
ypos = (yrot + uniforms.offsetY);
|
|
var output : VertexOutput;
|
|
output.v_color = (vec4<f32>(fade, (1.0 - fade), 0.0, 1.0) + color);
|
|
output.Position = vec4<f32>(xpos, ypos, 0.0, 1.0);
|
|
return output;
|
|
}
|
|
|
|
@stage(fragment)
|
|
fn frag_main(@location(0) v_color : vec4<f32>) -> @location(0) vec4<f32> {
|
|
return v_color;
|
|
}
|