struct Uniforms {
  modelViewProjectionMatrix : mat4x4<f32>,
};
@binding(0) @group(0) var<uniform> uniforms : Uniforms;

struct VertexOutput {
  @builtin(position) Position : vec4<f32>,
  @location(0) fragUV : vec2<f32>,
  @location(1) fragPosition: vec4<f32>,
};

@vertex
fn main(@location(0) position : vec4<f32>,
        @location(1) uv : vec2<f32>) -> VertexOutput {
  var output : VertexOutput;
  output.Position = position * uniforms.modelViewProjectionMatrix;
  output.fragUV = uv;
  output.fragPosition = 0.5 * (position + vec4<f32>(1.0, 1.0, 1.0, 1.0));
  return output;
}