public UITransparentOverlay() {
if (_mesh == null) {
Tessellator tessellator = new Tessellator();
TessellatorHelper.addGUIQuadMesh(
tessellator, new Vector4f(0.0f, 0.0f, 0.0f, 0.25f), 1.0f, 1.0f);
_mesh = tessellator.generateMesh();
}
}
