fvbo ejemplo

ejemplo point sprite

void testApp::setup(){
	ofBackground(0, 0, 0);
	ofSetVerticalSync(true);
	ofSetLogLevel(OF_LOG_VERBOSE);
	ancho = 640;
	alto = 480;
	
	///// lo lleno al tuntun
	for(int y = 0; y < alto ; y++){
		for (int x=0; x<ancho; x++) {
			int indes = y*ancho+x;
			vertices[indes].set(ofVec3f( ofRandom(0, 1024),ofRandom(0, 768),ofRandom(-200, 200) ));
			colores[indes].set(ofRandom(0,1), ofRandom(0,1),ofRandom(0,1));
			
		}
	}
	
	vbo.setVertexData(&vertices[0],maxParticulas, GL_DYNAMIC_DRAW);
	vbo.setColorData(&colores[0],maxParticulas,GL_DYNAMIC_DRAW);
	
	ofDisableArbTex();
	bola.loadImage("particula.png");
	glPointSize(20);
}

//--------------------------------------------------------------
void testApp::update(){

	for (int t=0;t<maxParticulas;t+=4 ){
		vertices[t].set(ofVec2f( ofRandom(0, 1024),ofRandom(0, 768) ));
		colores[t].set(ofRandom(0,1), ofRandom(0,1),ofRandom(0,1));
	}
}

//--------------------------------------------------------------
void testApp::draw(){
	ofBackground(0);
	ofEnableAlphaBlending();
	
	ofSetHexColor(0xffffff);
	
		ofEnablePointSprites();
		
		bola.getTextureReference().bind();
			vbo.updateVertexData(&vertices[0],maxParticulas);
			vbo.updateColorData(&colores[0],maxParticulas);
			vbo.draw(GL_POINTS, 0,maxParticulas);
		bola.getTextureReference().unbind();
		
		ofDisablePointSprites();
	ofDisableAlphaBlending();
	
	
	
	ofSetColor(255, 255, 255);
	string info = "FPS: "+ofToString(ofGetFrameRate());
	info += "\nTotal Particles: "+ofToString(maxParticulas);
	
	ofDrawBitmapString(info, 20, 20);	

}