public TextureContainter(TextureContainerMx owner, TextureUnit textureUnit, int textureUnitNo)
{
_owner = owner;
_textureUnit = textureUnit;
_textureUnitNo = textureUnitNo;
}
public ShaderSharedResource()
{
GL.GetInteger(GetPName.MaxCombinedTextureImageUnits, out int textunit_num);
_textureContainerMx = new TextureContainerMx(textunit_num);
}