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在 HP Pavilion g6 上使用带有 Visual Studio 2010 Professional 的 Windows 7 Home Premium 64 位。代码是用 C/C++ 编写的。

链接:

Additional Include Directories: N/A - Everything needed is in the VS2010 Include Directory
Additional Library Directories: N/A - Everything needed is in the VS2010 Lib Directory
Additional Dependencies (Debug Mode): glew32d.lib;glew32sd.lib;glu32.lib;opengl32.lib;gdi32.lib;winmm.lib;user32.lib;

代码:

    #include "stdafx.h"
    #include <stdio.h>
    #include <GL\glew.h>
    #include <GL\wglew.h> 
    #include <GL\glut1.h>
    #include <GL\glext.h>

    using namespace std;

    int main(int argc, char** argv)
    {
        glutInit(&argc, argv);

        const unsigned char * version ;
        version = (const unsigned char *)glGetString(GL_VERSION);
        printf ("My OpenGL version is %s\n", version); //Comment this out for error in Glut, leave for the other 2 errors

        // Obtain a buffer identifier from OpenGL
        GLuint bufferID = 0;
        glGenBuffers( 1, &bufferID ); //Comment out for no reported errors

        return 0;
    }

报告的错误:

glut.h:
First-chance exception at 0x00000000 in gl_crap3.exe: 0xC0000005: Access violation.
Unhandled exception at 0x76fe15de in gl_crap3.exe: 0xC0000005: Access violation.
Error occurs on line 486 - static void APIENTRY glutInit_ATEXIT_HACK(int *argcp, char **argv) { __glutInitWithExit(argcp, argv, exit); }

osfinfo.c:
First-chance exception at 0x00000000 in gl_crap3.exe: 0xC0000005: Access violation.
Unhandled exception at 0x76fe15de in gl_crap3.exe: 0xC0000005: Access violation.
Error occurs on line 467 - return retval; // in function, int __cdecl __lock_fhandle (int fh)

dbgheap.c:
First-chance exception at 0x00000000 in gl_crap3.exe: 0xC0000005: Access violation.
Unhandled exception at 0x76fe15de in gl_crap3.exe: 0xC0000005: Access violation.
Error occurs on line 504 - __finally {_munlock(_HEAP_LOCK);}

mlock.c:
First-chance exception at 0x00000000 in gl_crap3.exe: 0xC0000005: Access violation.
Unhandled exception at 0x76fe15de in gl_crap3.exe: 0xC0000005: Access violation.
Error occurs on line 375 - } // end of function, void __cdecl _unlock (int locknum)

其他明显的症状:

  • 当 printf 命令未注释掉时,崩溃在osfinfo.c、dbgheap.c 和 mlock.c 之间交替出现
  • 当 printf IS注释掉时,只会在 glut.h 上崩溃
  • 当glGenBuffers被注释掉时,没有未处理的异常错误——程序不会崩溃
  • printf 语句的输出是:My OpenGL version is (null) - 无论程序是否崩溃,都会发生

我完全被这个难住了,互联网上似乎没有任何东西可以帮助我。我什至首先专注于尝试解决“OpenGL version = null”问题,但我空手而归,因为我要么错误地遵循了这个网站上的建议(对 OpenGL 渲染上下文没有足够好的理解),要么这个问题是0xC0000005 错误的症状。


编辑:由于这个问题似乎是由多个问题引起的,我决定放置我的代码的更新版本以及我从中得到的相应错误。到目前为止,感谢您对我的帮助,但 glGenBuffers 似乎只是对我怀恨在心之类的。

新代码:

    #include "stdafx.h"
    #include <cmath>
    #include <math.h>
    #include <iostream>
    #include <GL\glew.h>
    #include <GL\glut.h>
    #include <GL\glext.h>
    #include <GL\wglew.h>
    #include <GL\wglext.h>
    #include <stdio.h>
    #include <stdlib.h>
    #include <stdarg.h>

    using namespace std;
    void drawScene();
    void handleKeypress(unsigned char key, int x, int y);
    void handleMouse(int button, int state, int x, int y);
    void handleResize(int w, int h);
    void update(int value);
    void printw (float x, float y, float z, char* format, ...);

    GLvoid *font_style = GLUT_BITMAP_TIMES_ROMAN_24;

    int main(int argc, char** argv)
    {
        glutInit(&argc, argv);
        glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH); 
        glutInitWindowSize(960, 460);
        glutCreateWindow("Piece of Shit");
        glEnable(GL_DEPTH_TEST);
        glutDisplayFunc(drawScene);
        glutKeyboardFunc(handleKeypress);
        glutMouseFunc(handleMouse);
        glutReshapeFunc(handleResize);
        glutTimerFunc(25, update, 0);
        glutMainLoop();
        return 0;
    }

    void drawScene()
    {
        double x, z;
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
        glMatrixMode(GL_MODELVIEW);
        glLoadIdentity();
        glClearColor(0.0,0.0,0.0,0.0);
        glShadeModel(GL_FLAT);
        GLuint bufferID[1];

        GLenum err = glewInit();
        if (GLEW_OK != err)
            printw(-6, 1.5, -10, "Fail: %s\n", glewGetErrorString(err));
        printw(-3, 0.3, -10, "Status: Using GLEW %s\n", glewGetString(GLEW_VERSION));
        glGenBuffers( 1, &bufferID[0] ); // comment out and you have no problems********************************
        glutSwapBuffers();
    }

    void handleKeypress(unsigned char key, int x, int y)
    {
    }

    void handleMouse(int button, int state, int x, int y)
    {
    }

    void handleResize(int w, int h)
    {   
        glViewport(0,0,w,h);
        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();
        gluPerspective(45.0, (double)w / (double)h, 1.0, 200.0);
    }

    void update(int value)
    {
        glutPostRedisplay();
        glutTimerFunc(20, update, 0);
    }

    void printw (float x, float y, float z, char* format, ...)
    {
        va_list args;   //  Variable argument list
        int len;        // String length
        int i;          //  Iterator
        char* text;     // Text

        //  Initialize a variable argument list
        va_start(args, format);

        //  Return the number of characters in the string referenced the list of arguments.
        // _vscprintf doesn't count terminating '\0' (that's why +1)
        len = _vscprintf(format, args) + 1;

        //  Allocate memory for a string of the specified size
        text = (char*) malloc (len * sizeof(char));

        //  Write formatted output using a pointer to the list of arguments
        vsprintf_s(text, len, format, args);

        //  End using variable argument list
        va_end(args);

        //  Specify the raster position for pixel operations.
        glRasterPos3f (x, y, z);

        //  Draw the characters one by one
        for (i = 0; text[i] != '\0'; i++)
        glutBitmapCharacter(font_style, text[i]);

        //  Free the allocated memory for the string
        free(text);
    }

错误:gl_crap3.obj:错误 LNK2001:未解析的外部符号 ___glewGenBuffers

4

2 回答 2

0

谢谢大家的帮助。在玩了一个多星期之后,我相信问题可能出在 Visual Studio 2010 Compiler 本身09/08/2012上。

我将尝试使用 Linux 来解决我的问题。

于 2012-08-09T14:35:33.987 回答
0

您的问题可能是 glGenBuffers 没有定义。我注意到您正在尝试使用 GLEW 来解决这个问题。正如您所猜测的那样,您需要做更多的事情来设置 GLEW。你需要调用glewInit。我的代码看起来像(为清楚起见而简化):

GLenum err = glewInit();
if (err != GLEW_OK) {
    string error = "GLEW extension loading failed: "+string((char*)glewGetErrorString(err));
    printf("%s\n",error); getchar();
}

在设置上下文后添加该代码(即,在 glutInit 之后)。我不知道您的 OpenGL 版本是否为 NULL——我最后一次遇到它是在一张相当旧的卡上——可能是一个集成芯片组。如果这是您的情况,则可能没有什么可担心的。

于 2012-08-05T03:44:55.513 回答