uniform highp mat4 view_proj;

// positions are in world space
attribute highp vec3 position;
attribute mediump vec2 texcoord0;
attribute lowp vec4 color;

varying mediump vec2 var_texcoord0;
varying lowp vec4 var_color;

void main()
{
    var_texcoord0 = texcoord0;
    var_color = vec4(color.rgb * color.a, color.a);
    gl_Position = view_proj * vec4(position.xyz, 1.0);
}