OPENGL_TEXTURE.zip_OPENGL 纹理_Opengl纹理_opengl 贴图_opengl贴图_贴图

#include <glut.h> /* glut.h includes gl.h and glu.h*/ #include<GLAUX.H> #include <stdio.h> #include <windows.h> #include<SOIL.h> GLfloat angle = 0; GLuint texture[6]; //分别存储三种方式的纹理（mipmap、线性、临近过滤） AUX_RGBImageRec *LoadBMP(CHAR *Filename) //载入位图图象 { FILE *File=NULL; //文件句柄 if (!Filename) //确保文件名已提供 { return NULL; //如果没提供，返回 NULL } File=fopen(Filename,"r"); //尝试打开文件 if (File) //文件存在 { fclose(File); //关闭句柄 return auxDIBImageLoadA(Filename); //载入位图并返回指针 } return NULL; //如果载入失败，返回 NULL } void LoadGLTextures() //载入位图(调用上面的代码)并转换成纹理 { //方式一：mipmap texture[0] = SOIL_load_OGL_texture( "pic1.bmp",SOIL_LOAD_AUTO, SOIL_CREATE_NEW_ID,SOIL_FLAG_MIPMAPS); glBindTexture(GL_TEXTURE_2D, texture[0]); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_LINEAR); texture[1] = SOIL_load_OGL_texture( "pic2.bmp",SOIL_LOAD_AUTO, SOIL_CREATE_NEW_ID,SOIL_FLAG_MIPMAPS); glBindTexture(GL_TEXTURE_2D, texture[1]); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_LINEAR); //方式二：线形滤波 texture[2] = SOIL_load_OGL_texture( "pic3.bmp",SOIL_LOAD_AUTO, SOIL_CREATE_NEW_ID,SOIL_FLAG_INVERT_Y); glBindTexture(GL_TEXTURE_2D, texture[2]); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); //线形滤波 glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); //线形滤波 texture[3] = SOIL_load_OGL_texture( "pic4.bmp",SOIL_LOAD_AUTO, SOIL_CREATE_NEW_ID,SOIL_FLAG_INVERT_Y); glBindTexture(GL_TEXTURE_2D, texture[3]); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); //线形滤波 glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); //线形滤波 //方式三：临近过滤 texture[4] = SOIL_load_OGL_texture( "pic5.bmp",SOIL_LOAD_AUTO, SOIL_CREATE_NEW_ID,SOIL_FLAG_INVERT_Y); glBindTexture(GL_TEXTURE_2D, texture[4]); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST); //临近过滤 glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST); //临近过滤 texture[5] = SOIL_load_OGL_texture( "pic6.bmp",SOIL_LOAD_AUTO, SOIL_CREATE_NEW_ID,SOIL_FLAG_INVERT_Y); glBindTexture(GL_TEXTURE_2D, texture[5]); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST); //临近过滤 glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST); //临近过滤 } void display(void) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); //清除屏幕和深度缓存 glLoadIdentity(); //重置当前的模型观察矩阵 glOrtho(-3.0, 3.0, -3.0, 3.0, -3.0, 3.0); glRotatef(angle,2,3,1); // 前面 glBindTexture(GL_TEXTURE_2D, texture[0]); //选择纹理 glBegin(GL_POLYGON); glTexCoord2f(1.0, 1.0); glVertex3f(-1.0, -1.0, 1.0); //纹理和四边形的左下 glTexCoord2f(0.0, 1.0); glVertex3f( 1.0, -1.0, 1.0); //纹理和四边形的右下 glTexCoord2f(0.0, 0.0); glVertex3f( 1.0, 1.0, 1.0); //纹理和四边形的右上 glTexCoord2f(1.0, 0.0); glVertex3f(-1.0, 1.0, 1.0); //纹理和四边形的左上 glEnd(); // 后面 glBindTexture(GL_TEXTURE_2D, texture[1]); //选择纹理 glBegin(GL_POLYGON); glTexCoord2f(1.0, 1.0); glVertex3f(-1.0, -1.0, -1.0); //纹理和四边形的右下 glTexCoord2f(0.0, 1.0); glVertex3f(-1.0, 1.0, -1.0); //纹理和四边形的右上 glTexCoord2f(0.0, 0.0); glVertex3f( 1.0, 1.0, -1.0); //纹理和四边形的左上 glTexCoord2f(1.0, 0.0); glVertex3f( 1.0, -1.0, -1.0); //纹理和四边形的左下 glEnd(); // 顶面 glBindTexture(GL_TEXTURE_2D, texture[2]); //选择纹理 glBegin(GL_POLYGON); glTexCoord2f(0.0, 1.0); glVertex3f(-1.0, 1.0, -1.0); //纹理和四边形的左上 glTexCoord2f(0.0, 0.0); glVertex3f(-1.0, 1.0, 1.0); //纹理和四边形的左下 glTexCoord2f(1.0, 0.0); glVertex3f( 1.0, 1.0, 1.0); //纹理和四边形的右下 glTexCoord2f(1.0, 1.0); glVertex3f( 1.0, 1.0, -1.0); //纹理和四边形的右上 glEnd(); // 底面 glBindTexture(GL_TEXTURE_2D, texture[3]); //选择纹理 glBegin(GL_POLYGON); glTexCoord2f(0.0, 0.0); glVertex3f(-1.0, -1.0, -1.0); //纹理和四边形的右上 glTexCoord2f(1.0, 0.0); glVertex3f( 1.0, -1.0, -1.0); //纹理和四边形的左上 glTexCoord2f(1.0, 1.0); glVertex3f( 1.0, -1.0, 1.0); //纹理和四边形的左下 glTexCoord2f(0.0, 1.0); glVertex3f(-1.0, -1.0, 1.0); //纹理和四边形的右下 glEnd(); // 右面 glBindTexture(GL_TEXTURE_2D, texture[4]); //选择纹理 glBegin(GL_POLYGON); glTexCoord2f(1.0, 0.0); glVertex3f( 1.0, -1.0, -1.0); //纹理和四边形的右下 glTexCoord2f(1.0, 1.0); glVertex3f( 1.0, 1.0, -1.0); //纹理和四边形的右上 glTexCoord2f(0.0, 1.0); glVertex3f( 1.0, 1.0, 1.0); //纹理和四边形的左上 glTexCoord2f(0.0, 0.0); glVertex3f( 1.0, -1.0, 1.0); //纹理和四边形的左下 glEnd(); // 左面 glBindTexture(GL_TEXTURE_2D, texture[5]); //选择纹理 glBegin(GL_POLYGON); glTexCoord2f(0.0, 0.0); glVertex3f(-1.0, -1.0, -1.0); //纹理和四边形的左下 glTexCoord2f(1.0, 0.0); glVertex3f(-1.0, -1.0, 1.0); //纹理和四边形的右下 glTexCoord2f(1.0, 1.0); glVertex3f(-1.0, 1.0, 1.0); //纹理和四边形的右上 glTexCoord2f(0.0, 1.0); glVertex3f(-1.0, 1.0, -1.0); //纹理和四边形的左上 glEnd(); angle += 0.05; glFlush(); glutSwapBuffers(); glutPostRedisplay(); } void init (void) { glClearColor (0.0, 0.0, 0.0, 0.0); glCullFace(GL_BACK); //背面裁剪(背面不可见) glEnable(GL_CULL_FACE); //启用裁剪 glEnable(GL_TEXTURE_2D); LoadGLTextures(); //载入纹理贴图 glEnable(GL_DEPTH_TEST); glMatrixMode(GL_PROJECTION); glLoadIdentity(); glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0); } int main(int argc, char *argv[]) { glutInit(&argc, argv); glutInitDisplayMode(GLUT_RGB | GLUT_SINGLE); glutInitWindowSize(600, 600); glutInitWindowPosition(100,100); glutCreateWindow("C3"); init (); LoadGLTextures(); glutDisplayFunc(display); //glutReshapeFunc(reshape); glutMainLoop(); return 0; }