#ifdef GL_ES
  precision mediump float;
#endif

attribute vec2 a_position;
attribute vec2 a_texCoord;
attribute vec4 a_color;

uniform mat4 u_view;
uniform mat4 u_projection;
uniform sampler2D u_texture;

varying vec2 v_texCoord;
varying vec4 v_color;

void main() {
  gl_Position = u_projection * u_view * vec4(a_position, 0.0, 1.0);
  v_texCoord = a_texCoord;
  v_color = a_color;
}