#version 450

const vec2 vertices[] = {
	vec2(-1.0f, 3.0f),
	vec2(-1.0f, -1.0f),
	vec2(3.0f, -1.0f)
};

void main() {
	gl_Position = vec4(vertices[gl_VertexIndex % 3], 0.0f, 1.0f);
}