public int CreateIndexBuffer(int sizeInBytes, OpenGL20BufferMode mode)
        {
            uint bufferHandle = GLHelper.GenBuffer();

            GLCore.BindBuffer(BufferTarget.ElementArrayBuffer, bufferHandle);
            GLCore.BufferData(BufferTarget.ElementArrayBuffer, (IntPtr)sizeInBytes, IntPtr.Zero, GetBufferMode(mode));
            return((int)bufferHandle);
        }
 public void BindIndexBuffer(int bufferHandle)
 {
     GLCore.BindBuffer(BufferTarget.ElementArrayBuffer, (uint)bufferHandle);
 }
 public void BindVertexBuffer(int bufferHandle)
 {
     GLCore.BindBuffer(BufferTarget.ArrayBuffer, (uint)bufferHandle);
 }