opengl-es

I have a static library Xcode 4 project that includes a home-brewed rendering engine, and I re-use this engine in multiple apps. This engine uses OpenGL ES 2.0, and by extension, shaders. As shaders got more complicated, I moved away from storing them as NSStrings in a source file, and now store them as standalone text files with the .vert and .frag extensions. This works fine for apps that include the rendering engine in their own source; the shaders are simply added to the app's "Copy Bundle Resources" build phase, and loaded at runtime into NSStrings and compiled, linked, etc. This strategy

I got this error when I try to load a PVR image on device. It works in iPhone 5s, 5, 4s and iPad well, but in 4 it doesn't work. My PVR image size is: width = 4096 and height = 2048 . Cocos2d: cocos2d: TexturePVR: Error uploading compressed texture level: 0 . glError: 0x0501 Cocos2d: cocos2d: Couldn't load PVR image /var/mobile/Applications/7CF6C347-8B63-4C1E-857A-41F48C8ACBEF/Race.app/Images/BackGround/bg1.pvr.ccz Cocos2d: cocos2d: Couldn't add PVRImage:Images/BackGround/bg1.pvr.ccz in CCTextureCache I got this form this link : Supported sizes are: iPhone 3gs / iPhone 4 / iPad 1 / iPod 3 / 4

I am trying to project a 3D surface in opengl on top of a camera view in Android. I am using opencv function solvepnp in native code to get the rotation and translation vectors of the device camera. I use these vectors to calculate the modelView matrix and modelViewProjection matrix as given in the following link: http://spottrlabs.blogspot.com/2012/07/opencv-and-opengl-not-always-friends.html Finally, I pass these matrices to the java code in a float array but when I use these matrices in my renderer I don't get the surface projection on the screen. I am sure that my 3D surface is generated

Why the hell would I want to do that? The OpenGL Shader Builder is a great development tool, but it compiles shaders using desktop OpenGL, which allows some things that ES does not. I figure if I can create a tool that links against the OpenGLES.framework in the iPhone Simulator SDK, I can get some error reporting without having to build/install/run my application. By inspecting the command lines appearing in the Xcode build window, I got as far as this (in Makefile format, for clarity. Seriously!): ARCH=i386 PLATFORM=/Developer/Platforms/iPhoneSimulator.platform/Developer GCC=$(PLATFORM)/usr

I have some 3D objects stored in 3D editor application specific (Blender/Solid/3DS) file format exported to OBJ+MTL files with optional textures in PNG/JPG files. I would like to load these objects in OpenGL ES application on mobile phone (today for Android and in the near future for iOS too). And I don't want to write my own OBJ+MTL (or any other 3D format) parser. So I would like to use some 3D engine with support for loading 3D models (from OBJ+MTL or exported to 3D engine specific header/resource files from within my 3D editor) to achieve this. I have some experience with Min3D framework,