1 

     2 

     3 attribute vec2 vertex;

     4 attribute vec2 texcoord;

     5 attribute vec4 colors;

     6 

     7 varying vec2 tex;

     8 

     9 uniform mat4 mvp;

    10 

    11 void main()

    12 {

    13     vec4 p = mvp * vec4(vertex, 0.0, 1.0);

    14     gl_Position = p;

    15     tex = texcoord;

    16 }