/*
 * Copyright (c) 2021, Jesse Buhagiar <jooster669@gmail.com>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#pragma once

#include <AK/OwnPtr.h>
#include <LibGL/Tex/Texture2D.h>

namespace GL {

class TextureUnit {
public:
    TextureUnit() = default;

    void bind_texture_to_target(GLenum texture_target, const RefPtr<Texture>& texture);
    void unbind_texture(GLenum texture_target);

    RefPtr<Texture2D>& bound_texture_2d() const { return m_texture_target_2d; }
    RefPtr<Texture>& bound_texture() const { return m_currently_bound_texture; }

    GLenum currently_bound_target() const { return m_currently_bound_target; }
    bool is_bound() const { return !m_currently_bound_texture.is_null(); }

    void set_env_mode(GLenum mode) { m_env_mode = mode; }
    GLenum env_mode() const { return m_env_mode; }

private:
    mutable RefPtr<Texture2D> m_texture_target_2d { nullptr };
    mutable RefPtr<Texture> m_currently_bound_texture { nullptr };
    GLenum m_currently_bound_target;
    GLenum m_env_mode { GL_MODULATE };
};

}