[vert.glsl]
#version 120

attribute vec3 in_Position;
attribute vec4 in_Color;

uniform mat4 in_ModelView;
uniform mat4 in_Proj;

varying vec4 pass_Color;

void main(void)
{
    pass_Color = in_Color;

    gl_Position = in_Proj * in_ModelView * vec4(in_Position, 1.0);
}

[frag.glsl]
#version 120

#if defined GL_ES
precision highp float;
#endif

varying vec4 pass_Color;

void main(void)
{
    gl_FragColor = pass_Color;
}