OpenGL纹理加载需要土壤帮助

OpenGL texture loading with soil help need

本文关键字：帮助 纹理 加载 OpenGL      更新时间：2023-10-16

这是代码。请帮助

#include <GL/glut.h>
#include <iostream>
#include <math.h>
#include "SOIL.h"
using namespace std;
GLuint texture[1];
int LoadGLTextures()
{
    texture[0] = SOIL_load_OGL_texture
        (
        "NeHe.bmp",
        SOIL_LOAD_AUTO,
        SOIL_CREATE_NEW_ID,
        SOIL_FLAG_INVERT_Y
        );
    if(texture[0] == 0)
        return false;

    glBindTexture(GL_TEXTURE_2D, texture[0]);
    glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
    return true;
}
void ChangeSize(int w, int h)
{
    if(h == 0)
    {
        h = 1;
    }
    float ratio = 1.0f * w/h;
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glViewport(0,0,w,h);
    gluPerspective(45,ratio,1,1000);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    gluLookAt(0.0,0.0,6.0,
              0.0,0.0,0.0,
              0.0f,1.0f,0.0f);
}
void display(void)
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glEnable(GL_TEXTURE_2D);
    glBindTexture(GL_TEXTURE_2D, texture[0]);
    glBegin(GL_QUADS);
    glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f,  1.0f);
    glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f,  1.0f);
    glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f,  1.0f,  1.0f);
    glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f,  1.0f,  1.0f);
    glEnd();
    glFlush();
}
void idle(void)
{
    glutPostRedisplay();
}
int main(int argc, char *argv[])
{
    glutInit(&argc, argv);
    glutInitWindowSize(640,480);
    glutInitWindowPosition(10,10);
    glutInitDisplayMode(GLUT_RGB | GLUT_SINGLE | GLUT_DEPTH);
    glutCreateWindow("ZC");
    glutReshapeFunc(ChangeSize);
    glutDisplayFunc(display);
    glutIdleFunc(idle);
    glEnable(GL_DEPTH_TEST);
    glutMainLoop();
}

我没有得到错误，但没有加载纹理。

您忘记在主程序中调用LoadGLTextures。我用这个变化运行了你的程序：

  glEnable(GL_DEPTH_TEST);
  LoadGLTextures(); //<-- added this
  glutMainLoop();
}

一切都很顺利。

我提供了我自己的NeHe.bmp文件，因为你没有链接到一个。如果.bmp文件在某些方面不好，它也可能失败。

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