#version 110

#include "particle.h"

#include "common/los_vertex.h"
#include "common/vertex.h"

VERTEX_INPUT_ATTRIBUTE(0, vec3, a_vertex);
VERTEX_INPUT_ATTRIBUTE(1, vec4, a_color);
VERTEX_INPUT_ATTRIBUTE(2, vec2, a_uv0);
VERTEX_INPUT_ATTRIBUTE(3, vec2, a_uv1);

void main()
{
  vec3 axis1 = vec3(modelViewMatrix[0][0], modelViewMatrix[1][0], modelViewMatrix[2][0]);
  vec3 axis2 = vec3(modelViewMatrix[0][1], modelViewMatrix[1][1], modelViewMatrix[2][1]);
  vec2 offset = a_uv1;

  vec3 position = axis1*offset.x + axis1*offset.y + axis2*offset.x + axis2*-offset.y + a_vertex;

  OUTPUT_VERTEX_POSITION(transform * vec4(position, 1.0));

  v_tex = a_uv0;
  v_color = a_color;
#if !IGNORE_LOS
  v_los = calculateLOSCoordinates(position.xz, losTransform);
#endif
}