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Index › Programming Questions & Help › OpenGL and 3D Libraries › Accessing pixels[] with noLoop()

ds YaBB Newbies Offline Posts: 21

Accessing pixels[] with noLoop() Oct 8th, 2007, 8:22am   I am not sure if this is intentional or a bug, but using the following code with the OpenGL renderer, loadPixels() and the pixels[] array returns 0. If you comment out the noLoop line then it works fine. Any ideas? Also, is it not possible to use background() with the OpenGL renderer? Thanks! Quote: import processing.opengl.*; PImage bg; void setup(){  size(200, 200, OPENGL);  bg = createImage(200, 200, RGB);  for(int i=0; i < bg.pixels.length; i++) {    bg.pixels[i] = color(0, 150, i % bg.width * 2);  }  noLoop(); } void draw(){  //background(bg);  image(bg, 0, 0); } void mousePressed(){  loadPixels();  // Print out the BLUE value of the PIXEL  int b = pixels[mouseY*width+mouseX] & 0xFF;  println(b);  redraw(); }

ds YaBB Newbies Offline Posts: 21	Re: Accessing pixels[] with noLoop() Reply #1 - Oct 10th, 2007, 5:34am   Well it looks like this comes under the all encompassing: Bug 91 : blend(), get(), set(), copy(), loadPixels, updatePixels() are broken when used with OPENGL http://dev.processing.org/bugs/show_bug.cgi?id=91

fry YaBB Moderator Offline Posts: 2623 mass, usa	Re: Accessing pixels[] with noLoop() Reply #2 - Oct 10th, 2007, 1:25pm   yes, that's correct. background() uses set(). need to get those straightened out.

fry YaBB Moderator Offline Posts: 2623 mass, usa	Re: Accessing pixels[] with noLoop() Reply #3 - Oct 10th, 2007, 2:25pm   good news, just fixed bug 91 for the next release (which should be coming along in the next few days).

ds YaBB Newbies Offline Posts: 21	Re: Accessing pixels[] with noLoop() Reply #4 - Oct 10th, 2007, 2:33pm   Thanks and Cool! Looking forward to it. Keep up the good work