[問題] openGL載入貼圖連續顯示

看板C_and_CPP (C/C++)作者starvirus (隼)時間13年前 (2013/04/27 01:27)推噓1(1推 0噓 11→)

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開發平台(Platform): (Ex: VC++, GCC, Linux, ...) VS2012 c++ 額外使用到的函數庫(Library Used): (Ex: OpenGL, ...) openGL (freeglut) 問題(Question)： 1.main function中while loop及Display call back function 關係 2.視窗無法顯示餵入的資料(Input)：餵入多張bmp檔，存成texture並顯示在視窗上程式碼(Code)：(請善用置底文網頁, 記得排版) int main(){ glutInit(&argc, argv); glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB); glutInitWindowSize(400,400); glutInitWindowPosition(600,80); glutCreateWindow("OpenGL test"); while(1) { save_count++; if(save_count>Max_frame)break; //計算最大張數的frame跳出 texture(); //讀入bmp檔，存入arr glutReshapeFunc(WindowSize); glutKeyboardFunc(Keyboard); glutDisplayFunc(Display); glutMainLoopEvent(); cout<<"loop: "<<save_count<<endl; cout<<"Display_count: "<<Display_count<<endl; } } void texture() { unsigned char * arr; //讀入bmp存入arr glTexImage2D(GL_TEXTURE_2D,0,3,Width,Height,0,GL_RGB,GL_UNSIGNED_BYTE,arr); glEnable(GL_TEXTURE_2D); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); } void Display(void) { glClear(GL_COLOR_BUFFER_BIT); glClearColor(1.0, 1.0, 1.0, 1.0); //背景white gluLookAt (0.0, 0.0, 10.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);//eye center up glMatrixMode(GL_MODELVIEW); glLoadIdentity(); //gluLookAt(0,0,10.0f,0,0,0,0,1,0); //視線的座標及方向 cout<<"Display"<<endl; Display_count++; glBegin(GL_QUADS); glNormal3f(0.0,0.0,1.0); glTexCoord2f(0,0); glVertex3f(-11,-11,0); glTexCoord2f(0,1); glVertex3f(-11,11,0); glTexCoord2f(1,0); glVertex3f(11,-11,0); glTexCoord2f(1,1); glVertex3f(11,11,0); glEnd(); glutSwapBuffers(); } 補充說明(Supplement)：我將main function的訊息印出例如現在最大frame數是5 則loop會從1-5 但Display的計數器只加到2 代表他只進入Display function兩次而且視窗總是全白請各位先進提供可能的原因謝謝! -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.113.68.157