CodeChickenCore/src/codechicken/core/featurehack/RenderEntityRenderHook.java

package codechicken.core.featurehack;

import org.lwjgl.opengl.GL11;

import net.minecraft.entity.Entity;
import net.minecraft.util.ResourceLocation;
import net.minecraft.client.renderer.entity.Render;
import net.minecraftforge.client.MinecraftForgeClient;

public class RenderEntityRenderHook extends Render
{
    @Override
    public void doRender(Entity entity, double x, double y, double z, float f, float frame)
    {
        EntityRenderHook hook = (EntityRenderHook)entity;
        GL11.glTranslated(x-hook.posX, y-hook.posY, z-hook.posZ);
        ((EntityRenderHook)entity).callback.render(frame, MinecraftForgeClient.getRenderPass());
        GL11.glTranslated(hook.posX-x, hook.posY-y, hook.posZ-z);
    }

    @Override
    protected ResourceLocation getEntityTexture(Entity entity)
    {
        return null;
    }
}