/*******************************************************************************
 * Progressia
 * Copyright (C) 2020  Wind Corporation
 *
 * 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/>.
 *******************************************************************************/
package ru.windcorp.progressia.client.graphics.backend.shaders.attributes;

import static org.lwjgl.opengl.GL11.*;
import static org.lwjgl.opengl.GL20.*;

import java.nio.ByteBuffer;
import java.nio.FloatBuffer;
import java.nio.IntBuffer;
import java.nio.ShortBuffer;

import ru.windcorp.progressia.client.graphics.backend.VertexBufferObject;
import ru.windcorp.progressia.client.graphics.backend.shaders.Program;

public class AttributeVertexArray extends Attribute {
	
	private boolean isEnabled = false;

	public AttributeVertexArray(int handle, Program program) {
		super(handle, program);
	}
	
	public void enable() {
		if (!isEnabled) {
			glEnableVertexAttribArray(handle);
			isEnabled = true;
		}
	}
	
	public void disable() {
		if (isEnabled) {
			glDisableVertexAttribArray(handle);
			isEnabled = false;
		}
	}
	
	public void set(
			int size, boolean normalized, int stride,
			ByteBuffer pointer
	) {
		glVertexAttribPointer(
				handle,
				size, GL_BYTE, normalized, stride, pointer
		);
	}
	
	public void set(
			int size, boolean normalized, int stride,
			FloatBuffer pointer
	) {
		glVertexAttribPointer(
				handle,
				size, GL_FLOAT, normalized, stride, pointer
		);
	}
	
	public void set(
			int size, boolean normalized, int stride,
			IntBuffer pointer
	) {
		glVertexAttribPointer(
				handle,
				size, GL_INT, normalized, stride, pointer
		);
	}
	
	public void set(
			int size, boolean normalized, int stride,
			ShortBuffer pointer
	) {
		glVertexAttribPointer(
				handle,
				size, GL_SHORT, normalized, stride, pointer
		);
	}
	
	public void set(
			int size, int type, boolean normalized, int stride,
			long pointer
	) {
		glVertexAttribPointer(
				handle,
				size, type, normalized, stride, pointer
		);
	}
	
	public void set(
			int size, int type, boolean normalized, int stride,
			VertexBufferObject vbo, long offset
	) {
		glBindBuffer(GL_ARRAY_BUFFER, vbo.getHandle());
		glVertexAttribPointer(
				handle,
				size, type, normalized, stride, offset
		);
	}

}
