freeglut

问题 Here is my source code I'm trying to get to work: In Main.hs: import Graphics.Rendering.OpenGL import Graphics.UI.GLUT import Bindings import Data.IORef main = do (progname,_) <- getArgsAndInitialize createWindow "Hello World" reshapeCallback $= Just reshape keyboardMouseCallback $= Just keyboardMouse angle <- newIORef 0.0 displayCallback $= display idleCallback $= Just idle mouseWheelCallback $= Just mouseWheel mainLoop In Bindings.hs: module Bindings where import Graphics.Rendering.OpenGL

问题 I have a DLL written in C++ that uses FreeGlut to visualize some data. I want to change the icon of the main (free)glut window. I've read that it is impossible, but in the docs I see: GLUT_ICON - specifies the icon that goes in the upper left-hand corner of the freeglut windows. How can I change icon for (free)glut window, if possible? 回答1: OK, I did it: Create a Resource for the project and add an 32x32 icon (edit it or import). This icon will get the ID equal to IDI_ICON1 . Include the

问题 I am working on a Mac, I've got FreeGlut compiled and installed, but I can't seem to get the OpenGL 3.2 context with it. However, I can get it without any problem while using GLFW. So in GLFW, this code works perfectly fine: glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 3); glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 2); glfwOpenWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); glfwOpenWindow(500, 500, 8, 8, 8, 8, 24, 8, GLFW_WINDOW) But with FreeGlut, this code fails(on

问题 I have installed PyOpenGL from here for 64-bit Python 3.x and Windows 7. I am able to write and execute a PyOpenGL program that uses glutMouseFunc to listen to mouse button clicks: from OpenGL.GLUT import * from OpenGL.GL import * # Imagine the typical glut init functions here ... glutMouseFunc( mouse ) Now, I want to read the scroll wheel of the mouse too. I have done this before in C++ using FreeGLUT, which exposes a glutMouseWheelFunc . I checked and I can see freeglut32.vc9.dll and

问题 I am doing a simple OpenGL freeglut project where I need to close an OpenGL window and when given a command, reopen it in the initial state (Like a game staring again when the replay button is pressed). I want to do something like this - while (c == 'y') { glutDisplayFunc(display); glutMouseFunc(mouse); glutMainLoop(); printf ("Want to play again? (y/n)\n"); scanf ("%c", &c); } How can I do this? I saw about glutDestroyWindow() somewhere but couldn't figure out how to use that in my case. 来源：

问题 I'm using Eclipse, MinGW, and I have compiled freeglut and glew and copied their libraries, DLLs, and header files into the proper locations (MinGW/include/GL, MinGW/lib, Windows/SysWOW64). I have also linked the libraries (freeglut64, opengl32, glew32, glu32) in Eclipse under the MinGW C++ Linker. Here is my code... --CharGame.cpp-- #include <stdlib.h> #include <stdio.h> #include <string.h> #include <GL/glew.h> #include <GL/freeglut.h> #include "CharGame.h" #define WINDOW_TITLE "CharGame"

问题 I'm just starting out with freeglut and glew and getting it running was already quite hard for me. So now I started coding with tutorials from swiftless and I had a square displayed worked fine. Now I got to the point where I want to make the square move with the arrow keys. From the point I inserted the glutIdleFunc it started lagging. I cant move the window or click on anything else for about a minute. If I try draging the window then it moves after about 2 min. I tried doing this with the

问题 I need to take sceenshots at every frame and I need very high performance (I'm using freeGlut). What I figured out is that it can be done like this inside glutIdleFunc(thisCallbackFunction) GLubyte *data = (GLubyte *)malloc(3 * m_screenWidth * m_screenHeight); glReadPixels(0, 0, m_screenWidth, m_screenHeight, GL_RGB, GL_UNSIGNED_BYTE, data); // and I can access pixel values like this: data[3*(x*512 + y) + color] or whatever It does work indeed but I have a huge issue with it, it's really slow

问题 I have a program which runs in a window using OpenGL (VS2012 with freeglut 2.8.1). Basically at every time step (run via a call to glutPostRedisplay from my glutIdleFunc hook) I call my own draw function followed by a call to glFlush to display the result. Then I call my own screenShot function which uses the glReadPixels function to dump the pixels to a tga file. The problem with this setup is that the files are empty when the window gets minimised. That is to say, the output from

问题 I have a CMake module to locate FreeGLUT: FIND_PATH(FREEGLUT_INCLUDE_DIR NAMES GL/freeglut.h) FIND_LIBRARY(FREEGLUT_LIBRARY NAMES freeglut freeglut_static) SET(FREEGLUT_LIBRARIES ${FREEGLUT_LIBRARY}) SET(FREEGLUT_INCLUDE_DIRS ${FREEGLUT_INCLUDE_DIR}) INCLUDE(FindPackageHandleStandardArgs) FIND_PACKAGE_HANDLE_STANDARD_ARGS(FreeGLUT DEFAULT_MSG FREEGLUT_LIBRARY FREEGLUT_INCLUDE_DIR) MARK_AS_ADVANCED(FREEGLUT_INCLUDE_DIR FREEGLUT_LIBRARY) It works fine and locates freeglut_static.lib when I