434 Topics
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 | Hello, I have simple problem for professionalist (that i think ) but i asked all available AI about it and none was able to help and solve problem. so nothing is able to help me in this. I have simple app that show 3 colored axes and camera that move … |
 | I'm trying to use CLion (thus CMake) to create OpenGL applications using C++ on MacOS Monterey using a 2021 (so M1 based) Macbook. Glew2 and GLFW3 are installed correctly using Homebrew, XCode and the commandline tools are installed as well. Creating and compiling/running through XCode works fine, but using the …  |
| | Hi all, I've started to dive into OpenGL w/C++ to expand my library knowledge but I had a few questions. I've been following a tutorial online that basically walks step by step through the compiler linking, functions, and basics of an OpenGL program. I really would love to create some … |
| | I worked about 2 weeks with OpenTK and I like to know how to texture triangles. I like to give my program, the flexibility to make shapes like triangles, cubes, spheres and to give them different textures (or shaders). I like to give my window a icon, but it says … |
| | Pls i need help. im new to OpenGL and have been given an assignment to loop a background automaticall. Pls can someone help me? |
| | Hey everybody, I was just wondering, how do you create Lens Distortion in OpenGL? As in, the rendered image looks bloated or sucked in when you implement it. I would typically want it in a simple format that works nicely and doesn't eat up too much CPU. As an extra, … |
| | I'm coding a program to learn OpenGL in C++ (based off of The Benny Boxes tutorials) and I've run into a snag where I don't get any errors, but my shaders refuse to apply to the triangle that I'm rendering. I'm going to give you all the relevant code but … |
 | I've been working with my own system using CPU-managed hitdefs (rectangles for mouse-events) since I didn't want to redraw everything for the gl feedback buffer... (basically I can do all the hitdef position management once during the frame loop) now that modern gl has come into play, I would like … |
| | Since OpenGL uses the strange system of 1s and 0s to represent location on the screen, I'm trying to figure out how to switch it to standard x, y coordinates like those that are used on a graph. And so far, my searches on the rest of the internet have … |
 | Hey. I've been working on a home brew game since late last year, writing an engine in Haskell and GLSL that includes 3D graphics, basic physics and programmable game logic. The version in the second video shows the first appearance of lighting and importation of OBJ files (the cube was … |
| | So I'm maing a 3D game editor in Java using LWJGL (Lightweight Java Game Library), I have the editor set up so that the user can create new levels, load up saved levels, save and quick save current levels, import textured models etc.. the basics. I am now trying to … |
 | I am trying to run the code in openGL in Visual Studio 2013 after installation. It shows error as "Cannot open source file <GL/glew.h> and <GL/glut.h> ". Also it shows "Identifier glutInit is undefined". Can you please resolve this issue ?? #include <GL/glew.h> #include <GL/glut.h> #pragma comment(lib, "glew32.lib") int main(int … |
 | on my university I got an assignment to build a program on OpenGl that read from a given txt file a coordinates of some lines and draw them to the screen. i thank everyone that might help me, I know a little bit programming on C but I'm a little …  |
| | void PatratTexturat(PATRAT patrat, int numar) { switch(numar) { case 1: if(numar==1) glBindTexture(GL_TEXTURE_2D, id_textura[2]); else glBindTexture(GL_TEXTURE_2D,id_textura[3]); break; case 2: if(numar==2) glBindTexture(GL_TEXTURE_2D, id_textura[4]); else glBindTexture(GL_TEXTURE_2D, id_textura[5]); break; case 3: if(numar==3) glBindTexture(GL_TEXTURE_2D, id_textura[6]); else glBindTexture(GL_TEXTURE_2D, id_textura[7]); case 4: if(numar==4) { glBindTexture(GL_TEXTURE_2D, id_textura[8]); } else { glBindTexture(GL_TEXTURE_2D, id_textura[9]); } break; case 5: glBindTexture(GL_TEXTURE_2D,id_textura[10]); break; … |
| | void PatratTexturat(PATRAT patrat, int numar) { switch(numar) { case 1: if(numar==1) glBindTexture(GL_TEXTURE_2D, id_textura[2]); else glBindTexture(GL_TEXTURE_2D,id_textura[3]); break; case 2: if(numar==2) glBindTexture(GL_TEXTURE_2D, id_textura[4]); else glBindTexture(GL_TEXTURE_2D, id_textura[5]); break; case 3: if(numar==3) glBindTexture(GL_TEXTURE_2D, id_textura[6]); else glBindTexture(GL_TEXTURE_2D, id_textura[7]); case 4: if(numar==4) { glBindTexture(GL_TEXTURE_2D, id_textura[8]); } else { glBindTexture(GL_TEXTURE_2D, id_textura[9]); } break; case 5: glBindTexture(GL_TEXTURE_2D,id_textura[10]); break; … |
| | Hi there, i have a ball: [icode] void ball (void) { glColor3f(0.0, 1.0, 0.0); //set ball colour glTranslatef(0.0,0.0,1); //moving it toward the screen a bit on creation glutSolidSphere (0.6, 7, 7); //create ball. } [/icode] I am trying to get the ball to move in a direction when i press … |
 | Hello everyone, I am trying to write an object loader in c++. Currently, I have a file that is made up of many sub objects and I am having a little difficulty figuring out how to process the data. First of all, here is an example of part of the … |
| | Hello Everyone! I'm using C++ to write a small 2D app with SDL and OpenGL. I'm trying as much as possible to keep my code cross-platform. However, I've hit a bump. I can't find a good, easy way to display text on the screen. I am able to do it, …  |
| | I am working on the qt opengl application for drawing a tree and getting the following error. Any idea would be appreciated. :-1: error: No rule to make target 'debugwidgetbase.ui', needed by 'ui_debugwidgetbase.h'. Stop. |
| | Hi, I have a C++ code running OpenGL GUI (CEGUI), I need to wrap this window inside a C# Application. I guess I will compile the C++ as a dll, and add entry points for the C# app. What is the preffered way to do this? I thought of these … |
 | **BREAKOUT GAME IN OPENGL** code is in C. Use the 's' and 'd' to move the paddle. Bounce the ball off the paddle to keep it from falling off the bottom of the screen. Break all the bricks to win. So far the program is running. but the right brick … |
 | Does my old Intel 946GZ Express Chipset Family supports OpenGL 2.0...? Plz reply soon i want to sale it to a minecraft lover...! |
| | Alright, so im making falling numbers and i need to display points while its running. in the code its keeping track, but i have no way of displaying it. in regular C++ i would just do cout<<score; but in openGL it doesn't work that way as most of you know. … |
| | //Program to implement Basic Incremental Algorithm //Working on ubuntu #include <GL/glut.h> #include<stdlib.h> #include <stdio.h> GLfloat x0,x1,y0,y1; //Input variables taken as global int flag=1; //variable for display1() void init(void) { glClearColor(0.0,0.0,0.0,0.0); glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluOrtho2D(0.0,500.0,0.0,500.0); } void PutPixel(GLfloat x,GLfloat y) { glBegin(GL_POINTS); glVertex2f(x,y); //To display pixels on-screen glEnd(); glFlush(); } void display1(void) … |
| | Ok so first off, I've recently returned to C++, and I'm very new to both OpenGL, and Code::Blocks IDE (used to use Bloodshed Dev before) .. so please don't flame me if there's a basic solution to this I'm trying to read a ".asc" file which has the vertices of … |
| | Hey! I'm using OpenGl GLUT on xcode 5.1.1 on mac osx 10.8.5 and I've can't figure out how to load bmp,jpg or png images as textures to my application. I've tried installing FreeImage and SOIL unsuccessfully. I'm a total newbie and some help would really be appreciated. |
| | ok, so I'm kindof a complete noob when it comes to stuff dealing with windows specifically... I know it's possible to have an interactive OpenGL desktop BG in XP as [this article](http://engineering.imvu.com/2010/11/24/how-to-write-an-interactive-60-hz-desktop-application/) proves it works in C++. but I want to get it working in python and have no idea … |
| | Hello, So I was testing my matrix class and the results look questionable and the inverted matrix isn't returning the vertex to it's original value (a seperate issue). Given a perspective projection at 45 degrees with a near of 1 and a far of 1000, the camera at the orgin … |
| | Hi everyone, i'm working with tao framework and i trying to make animation for my models from glut libraries but animation with using glut doesn't work (after compiling program closes) :( I tried found exception by try-catch but there are not exceptions. If drawing across vertex that animation will work. … |
 | I'm getting a compiler error when trying to initialize a geometry shader using OpenGL. I'm using VS2013. Here is how I initialize it on OpenGL myCgContext = cgCreateContext(); cgGLSetDebugMode(CG_FALSE); cgSetParameterSettingMode(myCgContext, CG_DEFERRED_PARAMETER_SETTING); CGprofile gpProfile = cgGLGetLatestProfile(CG_GL_GEOMETRY); if (gpProfile == CG_PROFILE_UNKNOWN) { if (cgGLIsProfileSupported(CG_PROFILE_GLSLG)) gpProfile = CG_PROFILE_GLSLG; else { fprintf(stderr, "%s: geometry … |
| | Hello, So I'm aware that OpenGL is Column major and DirectX is Row major, but how does that translate into a basic 1D array? So given the below visual matrix, what would the first 3 in the array of each platform and which 3 would be the x,y and z … |
| | how to load a bitmap image in vb.net using opengl..plz help me..  |
| | I'm trying to write a simple game using SDL and OpenGL. Up until now, I was using purely SDL and pixel manipulations on the framebuffer to draw lines and other shapes. However, as you would expect, that got unbearably slow as the number of objects on the screen increased. Now … |
 | i'm found this piece of code on internet about how to load multi texture in opengl es 2.0: // // Book: OpenGL(R) ES 2.0 Programming Guide // Authors: Aaftab Munshi, Dan Ginsburg, Dave Shreiner // ISBN-10: 0321502795 // ISBN-13: 9780321502797 // Publisher: Addison-Wesley Professional // URLs: http://safari.informit.com/9780321563835 // http://www.opengles-book.com // … |
| | Hey guys, I'm trying to learn OpenGL ES 2.0, from http://developer.android.com . From 3 days, I'm trying to do the drawing shapes part, but my shape (triangle) won't draw on the screen. My Android Version is 2.3 and I'm debuging via USB. There is my project: http://www.speedyshare.com/QJcFZ/AndroidChessProject.rar I would be … |
| | My university's TA helped me setup all the necessary files to run OpenGL on vs 2008 (even though his .cpp and .h files were written in vs2013) yet when I compile the project, it gives me a white window. The same code will display a 3d mouse in the computer … |
 | hi everybody! I really need your help here. I am developing a 3D game. so far I have came no further than finishing the 3D engine and print out some basic 3D-models. everything works okay, with exception of a bug, occuring after a couple of minutes of running time. it …  |
| | I need the way in SDL work with openGL for allow users input String by writing text .  |
| | how to get mouse coordinates when user click by mouse using opengl ? |
 | Hello everyone, I need OpenGL 2D War Plane Game Source Codes. If you have , write me please |
| | I have used sdl_ttf in opengl . but i have this error : error LNK1104: cannot open file 'SDL_ttf.lib' i already have tried to remove the "SDL_ttf.lib" , but it didn't useful. i have trid used : lazyfoo.net for setting up the opengl with sdl pls tell me what must … |
| | I need the way for allow users input text by writing , while users input text they see what's they input when user press enter jump for next line and when user end press on button to finish ?  |
| | I've tried lots of times to get this to work but , no luck . the problem is this program shows white screen , and It doesn't display the polygon . Here's the code , take a look : /*Headers*/ #include <GL/glut.h> /*End of headers*/ /* Check Compiler*/ #ifdef __FLAT__ … |
 | Please help me sir.. its my first .. how to instal OpenGL Library into MinGW .... i have tried but error code : #include <GL/gl.h> #include <GL/glut.h> void display() { glClear(GL_COLOR_BUFFER_BIT); glFlush(); } int main(int argc, char **argv) { glutInit(&argc, argv); glutInitWindowSize(512,512); glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB); glutCreateWindow("Test Program :: hello world"); … |
| | Write down in C++ and OpenGL a code that is able to draw a polygon with the following vertex: {-0.6,-0.6; -0.6, 0.6; 0.6, 0.6; 0,6,-0.6) and rotate the polygon by 450  |
| | I'm trying to create a simple colored cube using vbo(well it actually a rectangle with z = 0). I am using glew & freeglut. Here my code. #include <GL/glew.h> #include <GL/glut.h> #include <stdio.h> const int g_width = 800; const int g_height = 800; #pragma comment(lib, "glew32.lib") static const GLsizeiptr PositionSize … |
 | Hello, I can get OpenGL to render 3D scenes to the screen, but I want to render them to a pixel array. Basically I want some magical code to fill in the blanks for this code segment: int width=500; int height=500; uint32_t *colours=new uint32_t[width*height]; //Magic code! glBegin(GL_TRIANGLES); //other drawing stuff, … |
| | Hello, Unfortunately I learnt OpenGL from NeHe tutorials, which means that all of my current methods for OpenGL-ing are extremely deprecated. I tried to find a more up-to-date tutorial, but all they seem to do is teach how to get really complicated stuff out of OpenGL. I just want to … |
| | Can someone please help me understand what the glMatrixMode() function does? I've read the API and looked on google but I cannot understand what it does. An anology or example would help. Thanks. |
| | Hello, I am wondering how libraries create graphics contexts in a cross-platform manner. Somehow libraries like SDL create graphical windows seemingly without using the system headers. I know how to set up a window for graphics using Win32API, and how to get input from it using the same. How do … |
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