#version 450
#extension GL_EXT_buffer_reference : require

#include "hex_common.glsl"

#define PI 3.1415926535897932384626433832795
float w = 0.5;

vec4 vertices[] = {
  vec4(0,             0, 0,             1),
  vec4(w*cos(0*PI/3), 0, w*sin(0*PI/3), 1),
  vec4(w*cos(1*PI/3), 0, w*sin(1*PI/3), 1),
  vec4(w*cos(2*PI/3), 0, w*sin(2*PI/3), 1),
  vec4(w*cos(3*PI/3), 0, w*sin(3*PI/3), 1),
  vec4(w*cos(4*PI/3), 0, w*sin(4*PI/3), 1),
  vec4(w*cos(5*PI/3), 0, w*sin(5*PI/3), 1),
};

uint indices[] = {
  0, 2, 1,
  0, 3, 2,
  0, 4, 3,
  0, 5, 4,
  0, 6, 5,
  0, 1, 6,
};

void main() {
  gl_Position = pc.context.proj * pc.context.view * vertices[indices[gl_VertexIndex]];
}