gistfile1.hx

package ;

import flash.display.Stage;
import flash.display.Stage3D;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.display3D.Context3D;
import flash.display3D.Context3DCompareMode;
import flash.display3D.Context3DTriangleFace;
import flash.display3D.IndexBuffer3D;
import flash.display3D.VertexBuffer3D;
import flash.events.Event;
import flash.geom.Vector3D;
import flash.Lib;
import flash.Vector;
import ryz.engine.shaders.ShFSQ;

/**
 * ...
 * @author ryz
 */

class Main 
{
  var stage2d:Stage;
	var stage3d:Stage3D;
	var ctx3d:Context3D;

	var vbuf:VertexBuffer3D;
	var ibuf:IndexBuffer3D;
	
	var shFSQ:ShFSQ;
	
	
	public function new()
	{
		stage2d = Lib.current.stage;
		
		stage3d = stage2d.stage3Ds[0];
		
		stage3d.addEventListener( Event.CONTEXT3D_CREATE, onGetContext3d );
		stage3d.requestContext3D();
	}
	
	
	private function onGetContext3d(e:Event):Void
	{
		trace('got context');
		
		stage3d.removeEventListener( Event.CONTEXT3D_CREATE, onGetContext3d );		
		
		ctx3d = stage3d.context3D;
		ctx3d.enableErrorChecking = true;
		ctx3d.configureBackBuffer( 640, 480, 0, false );
		
		ctx3d.setDepthTest(false, Context3DCompareMode.NEVER);
		ctx3d.setCulling(Context3DTriangleFace.NONE);
		
		
		shFSQ = new ShFSQ(ctx3d);
		
		var vb = new Vector<Float>();
		vb.push(0); vb.push(0);
		vb.push(0); vb.push(1);
		vb.push(1); vb.push(0);
		vbuf = ctx3d.createVertexBuffer(3, 2);
		vbuf.uploadFromVector(vb, 0, 3);
		
		var ib = new Vector<UInt>();
		ib.push(0);
		ib.push(1);
		ib.push(2);
		ibuf = ctx3d.createIndexBuffer(3);
		ibuf.uploadFromVector(ib, 0, 3);
		
		
		stage2d.addEventListener(Event.ENTER_FRAME, onFrame);
	}
	
	
	private function onFrame(e:Event):Void
	{
		ctx3d.clear(0.1, 0.2, 0.3);
		
		var clrRed = new Vector3D(1, 0, 0, 0);
		shFSQ.init( { dx:0 }, { aclr:clrRed} );
		shFSQ.draw(vbuf, ibuf);
		var clrGreen = new Vector3D(0, 1, 0, 0);
		shFSQ.init( { dx:-0.1 }, { aclr:clrGreen} );
		shFSQ.draw(vbuf, ibuf);
		
		ctx3d.present();
	}
	
	
	
	
	
	static function main() 
	{
		var stage = Lib.current.stage;
		stage.scaleMode = StageScaleMode.NO_SCALE;
		stage.align = StageAlign.TOP_LEFT;
		// entry point
		
		new Main();
	}
	
}

gistfile2.hx

package ryz.engine.shaders;
import hxsl.Shader;

/**
 * ...
 * @author ryz
 */

class ShFSQ extends Shader
{

21static var SRC = 
	{
	var input : 
	{
	pos : Float2
	};
	
	function vertex(dx:Float)
	{
	out = [pos.x+dx, pos.y, 0, 1];
	}
	function fragment(aclr:Float4)
	{
	out = aclr;
	}
	}
	
}