#version 310 es

layout(std140) uniform uniform_buffer_object
{
    mat4 u_model_view_projection;
    float u_scale;
    vec3 u_bias[3];
};

layout(location = 0) in vec4 a_position;
layout(location = 1) in vec3 a_normal;
layout(location = 0) out vec3 v_normal;
layout(location = 1) out vec3 v_bias;

void main()
{
    v_normal = a_normal;
    v_bias = u_bias[gl_VertexIndex];
    gl_Position = u_model_view_projection * a_position * u_scale;
}