OpenGl程序占用了所有内存，然后关闭

Question

我制作了一个用OpenGL编写的程序，当我运行它时，程序填满了所有内存，然后在大约3300/4000 Mb的内存中关闭。下面是我的程序：

#include <iostream> 
#include <stdlib.h> 
#include <fstream> 
#include <windows.h> 
#include <gl/gl.h> 
#include <gl/glut.h> 
#include <gl/GLU.h> 
#include <gl/glaux.h> 


using namespace std; 


GLuint texture; 

AUX_RGBImageRec* LoadImage (char* file) { 

return auxDIBImageLoad (file); 
} 

int LoadTexture (char* file) { 
AUX_RGBImageRec* Textureimage; 

Textureimage = LoadImage (file); 
glGenTextures (1, &texture); 
glBindTexture (GL_TEXTURE_2D, texture); 
glTexImage2D (GL_TEXTURE_2D, 
0, 
GL_RGB, 
Textureimage->sizeX, 
Textureimage->sizeY, 
0, 
GL_RGB, 
GL_UNSIGNED_BYTE, 
Textureimage->data 
); 
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 
delete Textureimage; 
return 0; 
} 


void exitkey (unsigned char key, int x, int y) { 
switch (key) { 
case 27: 
exit (0); 
} 
} 


void Render3d() { 
glEnable (GL_DEPTH_TEST); 

glEnable (GL_NORMALIZE); 

glEnable (GL_LIGHTING); 

glEnable (GL_LIGHT0); 

glEnable (GL_LIGHT1); 

glEnable (GL_TEXTURE_2D); 

} 


void incaseofresize (int w, int h) { 
glViewport (0, 0, w, h); 
glMatrixMode (GL_PROJECTION); 
glLoadIdentity(); 
gluPerspective (90.0, (double)w/(double)h, 0.7, 300.0); 
} 


double theangle = 30.0; 

void draw() { 
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); 
glMatrixMode (GL_MODELVIEW); 
glLoadIdentity(); 
glTranslatef (0.0, 0.0, -6.0); 
glPushMatrix(); 

glRotatef (theangle, 0.0, 1.0, 0.0); 

GLfloat ambientlightcolor [] = { 0.0, 0.0, 0.0, 1.0 }; 
GLfloat light0color [] = { 0.5, 0.5, 0.0, 1.0 }; 
GLfloat light1color [] = { 1.0, 0.0, 0.0, 1.0 }; 
GLfloat light0position [] = { 2.0, 0.0, 3.0, 1.0 }; 
GLfloat light1position [] = { -2.0, 0.0, 3.0, 1.0 }; 

glLightModelfv (GL_LIGHT_MODEL_AMBIENT, ambientlightcolor); 
glLightfv (GL_LIGHT0, GL_DIFFUSE, light0color); 
glLightfv (GL_LIGHT0, GL_POSITION, light0position); 
glLightfv (GL_LIGHT1, GL_DIFFUSE, light1color); 
glLightfv (GL_LIGHT1, GL_POSITION, light1position); 


LoadTexture ("me.bmp"); 


glBegin (GL_QUADS); 
//Drawing shape 
glColor3f (1.0, 1.0, 1.0); 
//Left side 
glNormal3f (0.0, 0.0, 1.0); 
glTexCoord2f (0.0, 0.0); 
glVertex3f (-1.5, -1.0, -1.5); 
glTexCoord2f (1.0, 0.0); 
glVertex3f (0.0, -1.0, 1.5); 
glTexCoord2f (1.0, 1.0); 
glVertex3f (0.0, 1.0, 1.5); 
glTexCoord2f (0.0, 1.0); 
glVertex3f (-1.5, 1.0, -1.5); 

glEnd(); 


LoadTexture ("mom.bmp"); 


glBegin(GL_QUADS); 

//Right side 
glNormal3f (0.0, 1.0, 1.0); 
glTexCoord2f (0.0, 0.0); 
glVertex3f (0.0, -1.0, 1.5); 
glTexCoord2f (1.0, 0.0); 
glVertex3f (1.5, -1.0, -1.5); 
glTexCoord2f (1.0, 1.0); 
glVertex3f (1.5, 1.0, -1.5); 
glTexCoord2f (0.0, 1.0); 
glVertex3f (0.0, 1.0, 1.5); 

glEnd(); 

glBegin (GL_QUADS); 

//Back right side 
glNormal3f (0.0, 1.0, 0.0); 
glVertex3f (1.5, -1.0, -1.5); 
glVertex3f (0.0, -1.0, -4.5); 
glVertex3f (0.0, 1.0, -4.5); 
glVertex3f (1.5, 1.0, -1.5); 
glEnd(); 

glBegin (GL_QUADS); 

glNormal3f (0.0, 1.0, 0.0); 
glVertex3f (0.0, -1.0, -4.5); 
glVertex3f (-1.5, -1.0, -1.5); 
glVertex3f (-1.5, 1.0, -1.5); 
glVertex3f (0.0, 1.0, -4.5); 

glEnd(); 

glutSwapBuffers(); 
} 

void rotate (int value) { 
theangle += 1.5; 
if (theangle > 360) { 
theangle -=360; 
} 
glutPostRedisplay(); 
glutTimerFunc (50, rotate, 0); 
} 

int main (int argcpp, char** argv) { 
glutInit (&argcpp, argv); 
glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH); 
glutInitWindowSize (720, 480); 

glutCreateWindow ("OpenGL"); 
Render3d(); 

glutDisplayFunc (draw); 
glutKeyboardFunc (exitkey); 
glutReshapeFunc (incaseofresize); 
glutTimerFunc (50, rotate, 0); 

glutMainLoop(); 

return 0; 

}

我认为它的LoadTexture功能遍地重新加载图像再次每次循环，我不能找到一种方法，每个循环后删除的图像数据。

Answer 1

每当程序迭代显示函数时，它都会将图像加载到新纹理对象中，而不是释放之前创建的纹理对象。

规范的方法是只加载纹理一次。 OpenGL在所谓的纹理对象中组织纹理，由所谓的名称ID标识。 LoadTexture会返回这个ID。您可以通过调用glBindTexture(GL_TEXTURE_2D, theTextureID);