通过opencv载入图片做纹理贴图，最后显示的图片颜色变了为什么

[doriscsdn]

#include <windows.h>
#include <GL/gl.h>
#define GLUT_DISABLE_ATEXIT_HACK
#include <GL/glut.h>
#include <GL/glaux.h>
#include "highgui.h"
using namespace std;

void myinit(void);
void DrawMyObjects(void);
void CALLBACK display(void);
void CALLBACK myReshape(GLsizei w,GLsizei h);

IplImage *src=new IplImage;
static GLuint texName;

void myinit(void)
{
glClearColor(0.0,0.0,0.0,0.0);
src = cvLoadImage("F://gf1.bmp");
glGenTextures(1, &texName);
glBindTexture(GL_TEXTURE_2D, texName);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, 3,src->width,src->height, 0, GL_RGB, GL_UNSIGNED_BYTE, src->imageData);
glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_MODULATE);
glEnable(GL_TEXTURE_2D);
glDisable(GL_LIGHTING);
cvReleaseImage(&src);
glShadeModel(GL_FLAT);
}

void CALLBACK myReshape (GLsizei w,GLsizei h)

{
glViewport(0,0,w,h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
if (w<=h)
glOrtho(-20.0,20.0,-20.0*(GLfloat)h/(GLfloat)w,20.0*(GLfloat)h/(GLfloat)w,-50.0,50.0);
else
glOrtho(-20.0*(GLfloat)h/(GLfloat)w,20.0*(GLfloat)h/(GLfloat)w,-20.0,20.0,-50.0,50.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
void CALLBACK display(void)
{
glClear (GL_COLOR_BUFFER_BIT);
glLoadIdentity();
DrawMyObjects ();
glFlush ();
}

void DrawMyObjects(void)
{

glBegin (GL_QUADS);
glTexCoord2f(1.0f, 1.0f); glVertex3f(-10.0f, -10.0f, 1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex3f( 10.0f, -10.0f, 1.0f);
glTexCoord2f(0.0f, 0.0f); glVertex3f( 10.0f, 10.0f, 1.0f);
glTexCoord2f(1.0f, 0.0f); glVertex3f(-10.0f, 10.0f, 1.0f);
glEnd ();

}


void main(void)

{

auxInitDisplayMode (AUX_SINGLE | AUX_RGB);

auxInitPosition (0, 0, 500, 500);

auxInitWindow ("Geometric Primitive Types");

myinit();

auxReshapeFunc (myReshape);

auxMainLoop(display);

}


刚接触opengl与opencv，不知道为什么显示的图片颜色与原来的颜色不一样，还请指点！