ofMesh - can't see mapped texture

beginners
#1

Sorry about the basic question.
I’m following this article (http://openframeworks.cc/tutorials/graphics/opengl.html), but I’m having problems with texture mapping. Probably I’m failing to grasp some basic principle.

I’m using oF 0.8.3 for iOS.
All I can see is a black rectangle not mapped with the texture.

void MyOfApp::setup()
{
    ofBackground(200);
    ofSetFrameRate(60);
    ofSetBackgroundAuto(true);
    
    string imageFileName = "IMG_type.jpg"; // RGB, 600 × 450
    ofLoadImage(texture, imageFileName); // instance of "ofTexture"
    
    ofPlanePrimitive plane;
    
    plane.set(500, 300, 2, 2);
    plane.mapTexCoords(0, 0, 500, 300);
    
    mesh = plane.getMesh(); // mesh is instance of "ofMesh"
}

void MyOfApp::draw()
{
    ofEnableDepthTest();
    
    ofBackground(255, 255, 255);
    
    ofPushMatrix();
    
    float time = ofGetElapsedTimef();
    float angle = time * 90;
    ofTranslate( ofGetWidth()/2, ofGetHeight()/2, 0 );
    ofRotate( angle, 0, 1, 0 );
    
    ofSetColor( 255, 255, 255 );
    
    texture.bind();
    mesh.draw();
    texture.unbind();
    
    ofPopMatrix();
}

Thanks.

#2

I think that in OF for iOS, all of the textures are non-ARB, so the texture coords should be from 0-1. Try the code without the plane.mapTexCoords function call.

#3

That’s exactly what you said, Nick.

mapTexCoords method isn’t necessary for the ofPlane and when I mapped the texture to some triangles it worked using the range for between 0~1.

Thanks a lot!!!