// Rectangle shader for WebGPU
// Renders rectangular shapes with customizable colors
struct VertexInput {
@location(0) position: vec2<f32>,
@location(1) color: vec2<f32>,
}
struct VertexOutput {
@builtin(position) clip_position: vec4<f32>,
@location(0) color: vec4<f32>,
}
struct Uniforms {
view_matrix: mat4x4<f32>,
projection_matrix: mat4x4<f32>,
alpha: f32,
}
@group(0) @binding(0)
var<uniform> uniforms: Uniforms;
@vertex
fn vs_main(vertex: VertexInput) -> VertexOutput {
var out: VertexOutput;
let world_pos = vec4<f32>(vertex.position, 0.0, 1.0);
out.clip_position = uniforms.projection_matrix * uniforms.view_matrix * world_pos;
out.color = vec4<f32>(vertex.color, uniforms.alpha, 1.0);
return out;
}
@fragment
fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
return in.color;
}