RenderUtil

public static void renderModel(IBakedModel model){
        Tessellator tessellator = Tessellator.getInstance();
        VertexBuffer renderer = tessellator.getBuffer();
        renderer.begin(GL11.GL_QUADS, DefaultVertexFormats.ITEM);

        for(BakedQuad bakedquad : model.getQuads(null, null, 0))
            LightUtil.renderQuadColor(renderer, bakedquad, -1);
        tessellator.draw();
    }