package gui.constants;

import java.nio.ByteBuffer;

import org.lwjgl.opengl.GL11;
import org.lwjgl.stb.STBImage;

import gui.AssetManager;

public class Images {

	public static int BACKGROUND;

	private static int loadTexture(byte[] imageData) {
		int[] width = new int[1];
		int[] height = new int[1];
		int[] channelCount = new int[1];

		ByteBuffer img = ByteBuffer.allocateDirect(imageData.length);
		img.put(imageData);
		img.flip();
		ByteBuffer pixels = STBImage.stbi_load_from_memory(img, width, height, channelCount, 4);

		int textureID = GL11.glGenTextures();
		GL11.glBindTexture(GL11.GL_TEXTURE_2D, textureID);
		GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR);
		GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR);
		GL11.glPixelStorei(GL11.GL_UNPACK_ALIGNMENT, 1); // Not on WebGL/ES
		GL11.glPixelStorei(GL11.GL_UNPACK_SKIP_PIXELS, 0); // Not on WebGL/ES
		GL11.glPixelStorei(GL11.GL_UNPACK_SKIP_ROWS, 0); // Not on WebGL/ES
		GL11.glPixelStorei(GL11.GL_UNPACK_ROW_LENGTH, 0); // Not on WebGL/ES
		GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA, width[0], height[0], 0,
				GL11.GL_RGBA,
				GL11.GL_UNSIGNED_BYTE, pixels);
		GL11.glBindTexture(GL11.GL_TEXTURE_2D, 0);

		return textureID;
	}

	public static void reloadImages() {
		BACKGROUND = loadTexture(AssetManager.getResource(Options.BackgroundPath));
	}

}