Max vertices rendering test openFrameworks

gistfile1.cpp

#include "ofMain.h"

class ofApp : public ofBaseApp{
public:
    ofVboMesh mesh;
    int resolution;
    int numVertices;
    ofEasyCam cam;
    //--------------------------------------------------------------
    void setup(){
        
        ofSetVerticalSync(false);
        
        resolution = 64;
        
        updateMesh();
    }
    
    
    //--------------------------------------------------------------
    void updateMesh(){
        
        mesh.clear();
        mesh.getVbo().clear();
        
        mesh.setMode(OF_PRIMITIVE_TRIANGLES);
        mesh.setUsage(GL_STATIC_DRAW);
        
        
        mesh = ofMesh::plane(1024, 1024, resolution, resolution);
        mesh.disableColors();
        
        numVertices = mesh.getNumVertices();
        
    }
    //--------------------------------------------------------------
    void update(){
        
        ofSetWindowTitle(ofToString(ofGetFrameRate()));
    }
    
    //--------------------------------------------------------------
    void draw(){
        ofBackground(0);
        ofSetColor(255);
        cam.begin();
        mesh.drawWireframe();
        cam.end();
        string s = "Use the UP/DOWN arrow keys to increase/decrease resolution.\n";
        s+= "Resolution: " + ofToString(resolution) + "\n";
        s += "Num Vertices: " + ofToString(numVertices) + "\n";
        ofDrawBitmapStringHighlight(s, 20, 20);
    }
    
    
    //--------------------------------------------------------------
    void keyReleased(int key){
        if (key == OF_KEY_UP) {
            resolution*=2;
            updateMesh();
        }else if (key == OF_KEY_DOWN) {
            resolution/=2;
            if (resolution < 2) {
                resolution = 2;
            }
            updateMesh();
        }
        
    }
};

//========================================================================
int main( ){

	ofSetupOpenGL(1024,768, OF_WINDOW);			// <-------- setup the GL context
	ofRunApp( new ofApp());

}