opengl-es-2.0

New to developing on iOS and in particular the new OpenGL related features on iOS 5, so I apologize if any of my questions are so basic. The app I am working on is designed to receive camera frames and display them on screen via OpenGL ES (the graphic folks will take over this and add the actual OpenGL drawing about which I know very little). The application is developed XCode4, and the target is iPhone4 running iOS 5. For the moment, I used the ARC and the GLKit functionality and all is working fine except for the memory leak in loading the images as texture. The app receives a "memory

I'm trying to use OpenGL inside of Qt using QOpenGLWidget, but I am having a hard time finding any relevant examples. I am new to OpenGL, so I am trying to learn how to use it, but the tutorials that I find don't seem to apply particularly well in QOpenGLWidget. Right now, all I want to do is render a triangle to start with. Here's what I have so far. Header: namespace Ui { class Widget; } class Widget : public QOpenGLWidget, protected QOpenGLFunctions { public: explicit Widget(QWidget *parent = 0); ~Widget(); protected: void initializeGL(); void resizeGL(int, int); void paintGL(); private: Ui

I'm looking for some pointers on how to implement simple water surface effects in OpenGL ES 2.0. Nothing fancy like reflection or refraction, just a basic ripple/wave effect that modulates over time. Performance is critical. I'm assuming this will be best done in a shader. Any pointers on how to best handle this? There is an old trick to simulate water waves & ripples using minimum effort in terms of equations. It's used in many places, and I can't find the original, but you can grab it, for example, from here . You'll need 2 textures, each containing just height. Simulation is done by ping

I can't seem to find a clear answer on this, despite hours of googling. Can someone just tell me what's going on? I get errors saying things like, "version 140 is not supported." Is this my device (Kindle Fire) or GL ES 2.0? Do I need to add libraries or anything? you actually don't have to add any libraries, 140 is far too new for Kindle Fire. Either remove the version specification or decrement it until the shader compiles. You may need to fix some other errors in the shader as the individual versions of the language do have some differences. You can also query GL_SHADING_LANGUAGE_VERSION

I've been converting my own personal OGLES 2.0 framework to take advantage of the functionality added by the new iOS 5 framework GLKit . After pleasing results, I now wish to implement the colour-based picking mechanism described here . For this, you must access the back buffer to retrieve a touched pixel RGBA value, which is then used as a unique identifier for a vertex/primitive/display object. Of course, this requires temporary unique coloring of all vertices/primitives/display objects. I have two questions, and I'd be very grateful for assistance with either: I have access to a