使用深度缓冲区进行三维混合代码
#include <GLUT.H>#include <stdio.h>#include <tchar.h>GLuint sphereList, cubeList;static float solidZ = 8.0;static float transparentZ = -8.0;#define ZINC 0.4void init(){GLfloat mat_specular[] = {1.0f, 1.0f, 1.0f, 0.15f};GLfloat mat_shininess[] = {100.0};glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);GLfloat position[] = {0.5f, 0.5f, 1.0f, 0.0};glLightfv(GL_LIGHT0, GL_POSITION, position);glEnable(GL_LIGHTING);glEnable(GL_LIGHT0);glEnable(GL_DEPTH_TEST);sphereList = glGenLists(1);glNewList(sphereList, GL_COMPILE);glutSolidSphere(0.4, 16, 16);glEndList();cubeList = glGenLists(1);glNewList(cubeList, GL_COMPILE);glutSolidCube(0.6);glEndList();//glEnable(GL_POLYGON_SMOOTH);}void display(){GLfloat mat_solid[] = {0.75, 0.75, 0.0, 1.0};GLfloat mat_zero[] = {0.0, 0.0, 0.0, 1.0};GLfloat mat_transparent[] = {0.0, 0.8, 0.8, 0.6};GLfloat mat_emission[] = {0.0, 0.3, 0.3, 0.6};glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);glPushMatrix();glTranslatef(-0.15, -0.15, solidZ);glMaterialfv(GL_FRONT, GL_EMISSION, mat_zero);glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_solid);glCallList(sphereList);glPopMatrix();glPushMatrix();glTranslatef(0.15, 0.15, transparentZ);glRotatef(15.0, 1.0, 1.0, 0.0);glRotatef(30.0, 0.0, 1.0, 0.0);glMaterialfv(GL_FRONT, GL_EMISSION, mat_emission);glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_transparent);glEnable(GL_BLEND);glDepthMask(GL_FALSE);glBlendFunc(GL_SRC_ALPHA, GL_ONE);glCallList(cubeList);glDepthMask(GL_TRUE);glDisable(GL_BLEND);glPopMatrix();glutSwapBuffers();glFlush();}void idleFunc(){if(solidZ<=-8.0 || transparentZ>=8.0){glutIdleFunc(NULL);}else{solidZ -= ZINC;transparentZ += ZINC;glutPostRedisplay();}}void reshape(int width, int height){glViewport(0, 0, width, height);float ratio = (float)width/(float)height;glMatrixMode(GL_PROJECTION);glLoadIdentity();//glFrustum(-ratio, ratio, -1, 1, 1, 100);if(width<= height)glOrtho(-1.5, 1.5, -1.5*(GLfloat)height/(GLfloat)width,1.5*(GLfloat)height/(GLfloat)width, -10.0, 10.0);elseglOrtho(-1.5*(GLfloat)width/(GLfloat)height, 1.5*(GLfloat)width/(GLfloat)height, -1.5, 1.5, -10.0, 10.0);glMatrixMode(GL_MODELVIEW);glLoadIdentity();}void keyboard(unsigned char key, int x, int y){switch(key){case 'r':solidZ = 8.0;transparentZ = -8.0;glutPostRedisplay();break;case 'a':solidZ = 8.0;transparentZ = -8.0;glutIdleFunc(idleFunc);break;case 27: exit(0);default: break;}}int main(int argc, char* argv[]){glutInit(&argc, argv);glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);glutInitWindowPosition(100, 100);glutInitWindowSize(600, 600);glutCreateWindow(argv[0]);init();glutDisplayFunc(display);glutReshapeFunc(reshape);//glutIdleFunc(idleFunc);glutKeyboardFunc(keyboard);glutMainLoop();return 0;}?