mabo77 / LIbGLAPI

SWC lib with OpenGL syntax for AS3 Stage3D

OpenGL For Stage3D for AS3

This project is an OpenGL wrapper swc for use in AS3 projects

Example:

1. Please put LibGLAPI.swc in your libs folder
2. Write class GLS3DTest.as with following content

package { import GLS3D.GLAPI

import flash.display.Sprite
import flash.display.StageAlign
import flash.display.StageQuality
import flash.display.StageScaleMode
import flash.display3D.Context3D
import flash.display3D.Context3DProfile
import flash.display3D.Context3DRenderMode
import flash.events.ErrorEvent
import flash.events.Event

[SWF(width="600", height="400", frameRate="60", backgroundColor="#000000")]
public class GLS3DTest extends Sprite {
	public var context3D:Context3D;

	public function GLS3DTest() {
		if (stage) {
			init();
		}
		else {
			addEventListener(Event.ADDED_TO_STAGE, init);
		}
	}

	// called once Flash is ready
	private function init(e:Event = null):void {
		removeEventListener(Event.ADDED_TO_STAGE, init);
		stage.quality = StageQuality.LOW;
		stage.align = StageAlign.TOP_LEFT;
		stage.scaleMode = StageScaleMode.NO_SCALE;
		stage.addEventListener(Event.RESIZE, onResizeEvent);
		trace("Init Stage3D...");

		stage.stage3Ds[0].addEventListener(Event.CONTEXT3D_CREATE, onContext3DCreate);
		stage.stage3Ds[0].addEventListener(ErrorEvent.ERROR, errorHandler);
		stage.stage3Ds[0].requestContext3D(Context3DRenderMode.AUTO, Context3DProfile.STANDARD);
		trace("Stage3D requested...");
	}

	private function onContext3DCreate(e:Event):void {
		trace("Stage3D context created! Init sprite engine...");
		context3D = stage.stage3Ds[0].context3D;
		context3D.enableErrorChecking = true;
		context3D.configureBackBuffer(this.stage.stageWidth, this.stage.stageHeight, 0);

		GLAPI.init(context3D, {send: function (s:String) {
			trace(s);
		}}, stage);

		addEventListener(Event.ENTER_FRAME, render)
	}

	private function render(event:Event):void {
		GLAPI.instance.context.clear();

		LibGLAPI.glLoadIdentity();
		LibGLAPI.glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
		LibGLAPI.glColor3f(mouseX / stage.stageWidth, 1.0, 0);
		LibGLAPI.glBegin(LibGLAPI.GL_POLYGON);
		LibGLAPI.glVertex3f(0.25, 0.25, 0.0);
		LibGLAPI.glVertex3f(0.75, 0.25, 0.0);
		LibGLAPI.glVertex3f(0.75, 0.75, 0.0);
		LibGLAPI.glVertex3f(0.25, 0.75, 0.0);
		LibGLAPI.glEnd();
		LibGLAPI.glFlush();

		GLAPI.instance.context.present();
	}

	private function errorHandler(e:ErrorEvent):void {
		trace("Error while setting up Stage3D: " + e.errorID + " - " + e.text);
	}

	protected function onResizeEvent(event:Event):void {
		trace("resize event...");
	}
}

}

3. Compile it with the latest FlexSDk and enjoy

License

The Adobe written portion of this project is provided under the MIT license. The headers for OpenGL come from the Mesa project. The examples are all licensed differently, please check carefully before reusing any of their code.