import framebuffer from './framebuffer.js';
import sampler2D from './sampler2D.js';
import {math, vector3, matrix4} from './math.js';
import samplerCube from './samplerCube.js';
import shader from './shader.js';

class defaultRenderPass {
	isDefault = true;
	realtime = true;
	updated = false;
	
	constructor( ) {
		
	}
	
	/**
	 * set viewport
	 * @param {(viewport)} viewport
	**/
	setViewport( viewport ){
		
		this.viewport = viewport;
		this.gl = viewport.gl;
	
	}
	
	prepareDefault() {
		
		this.width = this.viewport.width;
		this.height = this.viewport.height;
		
		this.targetSampler = new sampler2D( );
		this.targetSampler.type = this.gl.FLOAT;
		
		this.framebuffer = new framebuffer( );
		this.framebuffer.setViewport( this.viewport );
		
		this.framebuffer.width = this.width;
		this.framebuffer.height = this.height;
		
		this.framebuffer.addSampler( this.targetSampler );
		this.framebuffer.create();

		//this.shader = new shader();
		//this.shader.createFromFile("shaders/template.shader");
		
		this.shader.setUniform("viewProjection", this.viewport.quad.viewProjection );

	}
	
	
	render() {

		if(this.renderToViewport) {
			this.gl.bindFramebuffer( this.gl.FRAMEBUFFER, null );
		} else {
			this.gl.bindFramebuffer( this.gl.FRAMEBUFFER, this.framebuffer.glFramebuffer );
		}
		
		
		this.gl.clearColor( 0, 0, 0, 1 );
		this.gl.clear(this.gl.COLOR_BUFFER_BIT | this.gl.DEPTH_BUFFER_BIT);

		this.viewport.quad.draw( this.shader );

		this.updated = true;
		
	}
}

export {defaultRenderPass as default};