/*
 * Minosoft
 * Copyright (C) 2020-2022 Moritz Zwerger
 *
 * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
 *
 * This software is not affiliated with Mojang AB, the original developer of Minecraft.
 */

package de.bixilon.minosoft.gui.rendering.system.opengl.buffer.frame.texture

import de.bixilon.kotlinglm.vec2.Vec2i
import de.bixilon.minosoft.gui.rendering.system.base.buffer.frame.texture.FramebufferTexture
import de.bixilon.minosoft.gui.rendering.system.base.buffer.render.RenderbufferModes
import de.bixilon.minosoft.gui.rendering.system.opengl.buffer.render.OpenGLRenderbuffer.Companion.gl
import org.lwjgl.opengl.GL30.*
import java.nio.ByteBuffer

class OpenGLFramebufferDepthTexture(
    override val size: Vec2i,
    val mode: RenderbufferModes,
) : OpenGLTexture(), FramebufferTexture {

    override fun init() {
        id = glGenTextures()
        glBindTexture(GL_TEXTURE_2D, id)
        glTexImage2D(GL_TEXTURE_2D, 0, mode.gl, size.x, size.y, 0, GL_DEPTH_COMPONENT, GL_FLOAT, null as ByteBuffer?)
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_FUNC, GL_LEQUAL)
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_NONE)

        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE)

        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
    }
}
