Question

我使用OpenGL，SDL 2和GLEW编写了一个简单的程序。它可以在Linux上运行，在Wine下运行，在一个Windows 7系统上运行它。但是，在另一个Windows系统上，它一旦到达glGenBuffers就会崩溃，即使它说OpenGL 2.1可用。这是代码：

#define GLEW_STATIC

#include <stdio.h>
#include <GL/glew.h>
#include <SDL2/SDL.h>

SDL_Window *window;
SDL_GLContext context;

GLuint vbo;

void Init() {
    SDL_Init(SDL_INIT_EVERYTHING);
    SDL_GL_LoadLibrary(NULL);
    int min, max;
    SDL_GL_GetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION,&max);
    SDL_GL_GetAttribute(SDL_GL_CONTEXT_MINOR_VERSION,&min);
    printf("Default OpenGL version %d.%d\n",max,min);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION,2);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION,1);
    SDL_GL_GetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION,&max);
    SDL_GL_GetAttribute(SDL_GL_CONTEXT_MINOR_VERSION,&min);
    printf("OpenGL version %d.%d\n",max,min);
    SDL_GL_SetAttribute(SDL_GL_ACCELERATED_VISUAL,1);
    window=SDL_CreateWindow("", 0, 0, 500, 500, SDL_WINDOW_OPENGL);
    context = SDL_GL_CreateContext(window);
    glewExperimental=1;
    GLenum err=glewInit();
    if(GLEW_OK!=err)
    {
        printf("Error: %s\n", glewGetErrorString(err));
        return(1);
    }

    if(window==NULL) {
        printf("Could not create window: %s\n", SDL_GetError());
        return(1);
    }
    glClearColor(1.0f, 1.0f, 1.0f, 0.0f);
    glShadeModel(GL_FLAT);
    glEnableClientState(GL_VERTEX_ARRAY);
    float data[][2] = {{50,50},{100,50},{75,100}};
    glGenBuffers(1,&vbo);
    glBindBuffer(GL_ARRAY_BUFFER, vbo);
    glBufferData(GL_ARRAY_BUFFER, sizeof(data), data, GL_STATIC_DRAW);
}

void Render() {
    glViewport(0,0, (GLsizei) 500, (GLsizei) 500);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluOrtho2D(0.0f, (GLdouble) 500, 0.0f, (GLdouble) 500);
    glClear(GL_COLOR_BUFFER_BIT);
    glColor3f(0.0f,0.0f,0.0f);
    glBindBuffer(GL_ARRAY_BUFFER, vbo);
    glVertexPointer(2, GL_FLOAT, 2*sizeof(float), 0);
    glDrawArrays(GL_TRIANGLES,0,3);
    SDL_GL_SwapWindow(window);
}

int main(int argc, char **argv){
    Init();
    Render();
    SDL_Delay(2000);
    glDeleteBuffers(1,&vbo);
    return(0);
}

以下是自最初发布此问题以来我添加的更多信息：

使用％p打印glBindBuffer的地址，为0。
两者（GLEW_ARB_vertex_buffer_object == GL_TRUE）和（GLEW_ARB_vertex_array_object == GL_TRUE）都返回0.
glGetString（GL_RENDERER）返回＆＃34; GDI Generic＆＃34;。
我也尝试将深度尺寸设置为16，但仍然无法正常工作。
显卡是Nvidia 750 TI。

gG中的glGenBuffers为空？

0 个答案: