snuvi-engine/src/me/hammerle/snuviengine/api/GLHelper.java

package me.hammerle.snuviengine.api;

import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL15;
import org.lwjgl.opengl.GL30;

public class GLHelper
{
    private static int currentVao = -1;
    private static int currentVbo = -1;
    private static int currentTexture = -1;
        
    protected static void glBindVertexArray(int vao)
    {
        if(vao != currentVao)
        {
            currentVao = vao;
            GL30.glBindVertexArray(vao);
        }
    }
    
    protected static void glBindBuffer(int vbo)
    {
        if(vbo != currentVbo)
        {
            currentVbo = vbo;
            GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, vbo);
        }
    }
    
    protected static void glBindTexture(int texture)
    {
        if(texture != currentTexture)
        {
            currentTexture = texture;
            GL11.glBindTexture(GL11.GL_TEXTURE_2D, texture);
        }
    }
}