package net.coderbot.iris.rendertarget;

import com.gtnewhorizons.angelica.compat.mojang.NativeImage;
import com.gtnewhorizons.angelica.glsm.RenderSystem;
import net.minecraft.client.renderer.texture.DynamicTexture;
import org.lwjgl.opengl.GL11;

import java.util.Random;

public class NativeImageBackedNoiseTexture extends DynamicTexture {
	public NativeImageBackedNoiseTexture(int size) {
		super(create(size));

		RenderSystem.texParameteri(getGlTextureId(), GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR);
		RenderSystem.texParameteri(getGlTextureId(), GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR);
		RenderSystem.texParameteri(getGlTextureId(), GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_S, GL11.GL_REPEAT);
		RenderSystem.texParameteri(getGlTextureId(), GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_WRAP_T, GL11.GL_REPEAT);
	}

	private static NativeImage create(int size) {
		NativeImage image = new NativeImage(NativeImage.Format.RGBA, size, size, false);
		Random random = new Random(0);

		for (int x = 0; x < size; x++) {
			for (int y = 0; y < size; y++) {
				int color = random.nextInt() | (255 << 24);

				image.setPixelRGBA(x, y, color);
			}
		}

		return image;
	}

}