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Questions tagged [glut]

The [Open]GL Utility Toolkit (GLUT) is a utility library for OpenGL applications to put the platform-dependent details (e.g. creating windows and responding to mouse events and key presses) under one hood, in an easy and portable way.

GLUT stands for OpenGL Utility Toolkit is a utility library for OpenGL applications to put the platform-dependent details (e.g., creating windows and responding to mouse events and key presses) under one hood, in an easy and portable way.

The OpenGL Utility Toolkit is a kind of library of utilities for OpenGL programs, which primarily perform system-level I/O with the host operating system. Functions performed include window definition, window control, and monitoring of keyboard and mouse input. Routines for drawing a number of geometric primitives are also provided.

The original GLUT has been unsupported for 20 years (see GLUT - The OpenGL Utility Toolkit), but there exists a current, maintained alternative named FreeGLUT.

Tag usage:

The tag can be used for OpenGL Utility Toolkit-related programming problems. The tag can be used for installation related problems of GLUT packages.

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Linked Error when using OpenGL and GLUT libraries in CLion (MacOS)

I'm trying to use OpenGL and GLUT in CLion. My CMakeLists.txt: cmake_minimum_required(VERSION 3.14) project(Graphos) set(CMAKE_CXX_STANDARD 17) find_library(GLUT REQUIRED) find_library(OpenGL REQUIRED) include_directories(.) add_executable( …
Gabriel S
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How to Draw a hollow circle in openGL C++

I am trying to draw a hollow circle with smooth lines in a window. And for some reason the circle is not appearing. So far I have found code for circles but the lines are jagged and I am needing them to be smooth. I want to be able to put other…
user12129437
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C++: keeping track of elapsed time

I'm looking for a way to be able to know how much time it's been since my program was started, at any given time. A sort of timer that would keep running while the main code is doing everything else, and that can be called at any time. The context…
John
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Eigen3 cannot find GLUT if I use freeglut 3.2.1?

Environment Windows 10 version 1903, 64bit Eigen 3.3.7 freeglut 3.2.1 Visual Studio 2015 Update 3 When I run the following cmake command to build Eigen3: cmake -DCMAKE_CONFIGURATION_TYPES=Release…
user5280911
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Where is my display function being called in GLUT?

I do not understand how this main function works. I have a display function, which uses glDrawArrays, but I do not see it being called. I only see it being used as a parameter for glutDisplayFunction. Here is my main: int main(int argc, char**…
iaskdumbstuff
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OpenGL gluLookAt

I tried to draw a teapot and view it in 3D but when I ran the program, nothing showed up. There is nothing in the window. I know it has something to do with my gluLookAt() function but I am not sure how to fix it. // helloteapot.cc //#include…
Timothy Huang
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OpenGl I have a display primitive simple asteroid but trying loop display 4 asteroids like in Image but Not working

I display my first primitive asteroid 2D model, but trying loop for show 4 asteroids on init program, in glBegin()...glEnd() not have a success. Loop For or While can be used here? I'm not working with classes here or vector push_back pop_back the…
yourbdeal dresdenptc
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Executing legacy opengl code in codeblocks

I have an old program that uses legacy opengl. I am attempting to run the code, but I have been stumbling into some errors. I installed freeglut and attempted to link it and add the includes, and while it seems to execute, I get an error in the…
branflaked
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program exits when printing global pointer values in the function passed to glutDisplayFunc()

I want to take input from user some vertices (x, y). For storing the input, I am using double pointer to integer. After taking input, I am checking if the input is stored correctly. The input is stored correctly, however, no values are printed in…
Akshdeep Singh
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DllNotFound Exception when I use glut functions in my Dll

I have a c++ dll and c# application. In C# application I call function from dll. With simple function like: extern "C" { __declspec(dllexport) void HelloFromDll() { MessageBox(NULL, _T("Hello from DLL"), _T("Hello from DLL"), NULL); …
EthanHunt
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How to download Glut for PyOpenGL, error Attempt to call an undefined function glutInit, tried many solutions, none work

I have decided I would like to start learning OpenGL through Python. I have downloaded PyOpenGL via pip, and attempted to run a program found online to test PyOpenGL and begin to learn how it works. A link to the code I have used is here. My issue…
Kasim B
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How to close a GLUT window with a Mac

I am trying to close an OpenGL's window in a program compile with g++-9 -framework GLUT -framework OpenGL in the Terminal of a MacOS Mojave 10.14.5 I tried using glutDestroyWindow() but i get a warnign : GLUT Warning: glutDestroyWindow attempted…
Jatos
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Attach a pop-up menu to a self-defined event in GLUT?

I know that with GLUT, I can create a Pop-up Menu with glutCreateMenu, glutAddMenuEntry, glutAttachMenu. And there are three events can be used with glutAttachMenu -- "GLUT_RIGHT_BUTTON, GLUT_MIDDLE_BUTTON, GLUT_LEFT_BUTTON". However, I want this…
Moriarty Shan
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glm.sizeof( glm.mat4 ) and the glMapBufferRange function error on a multiviewport rendering

Figure 8.27 of Superbible OpenGL 7th ed. has been ported to python although I am experiencing an error with the glMapBufferRange once more. This time to allocate a glm.mat4 I have tried to convert it to native ctypes.sizeof(ctypes.c_float) * 16 to…
Stan S.
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A cubic Bezier patch and its control cage inaccurate rendering

I am trying to port an example from chapter 8 of the Superbible OpenGL 7th ed. and the control cage lines are not going from point to point as in the example gif or the image on page 375 of the book. Instead its rendering the lines to just a single…
Stan S.
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