OpenGL輸出窗口立即縮小到0 x 0窗口

Question

我在使用OpenGLUT的OpenGL程序中遇到問題，這些程序在Visual Studio 2012中編譯和運行。程序編譯很好，當我按下運行800 x 600窗口打開並顯示我想要的圖像。 然而，窗口立即開始收縮，直到它在大約2秒內達到0 x 0然后保持打開狀態。 我不太確定問題是什么，谷歌搜索沒有相關信息。 以下是該問題的一些屏幕截圖：

上面的截圖是在程序啟動后立即拍攝的。 以下屏幕截圖是在程序啟動后大約一秒鍾拍攝的，沒有我的任何互動。

輸出窗口繼續縮小，直到其大小為0 x 0。 這是我的代碼，任何建議都會有所幫助。

#ifdef __APPLE_CC__
#include <GLUT/glut.h>
#else
#include <OpenGlut.h>
#endif

// Clears the window and draws the tetrahedron.  The tetrahedron is  easily
// specified with a triangle strip, though the specification really isn't very
// easy to read.
void display() {
  glClear(GL_COLOR_BUFFER_BIT);

  // Draw a white grid "floor" for the tetrahedron to sit on.
  glColor3f(1.0, 1.0, 1.0);
  glBegin(GL_LINES);
  for (GLfloat i = -2.5; i <= 2.5; i += 0.25) {
    glVertex3f(i, 0, 2.5); glVertex3f(i, 0, -2.5);
    glVertex3f(2.5, 0, i); glVertex3f(-2.5, 0, i);
  }
  glEnd();

  // Draw the tetrahedron.  It is a four sided figure, so when defining it
  // with a triangle strip we have to repeat the last two vertices.
  glBegin(GL_TRIANGLE_STRIP);
    glColor3f(1, 1, 1); glVertex3f(0, 2, 0);
    glColor3f(1, 0, 0); glVertex3f(-1, 0, 1);
    glColor3f(0, 1, 0); glVertex3f(1, 0, 1);
    glColor3f(0, 0, 1); glVertex3f(0, 0, -1.4);
    glColor3f(1, 1, 1); glVertex3f(0, 2, 0);
    glColor3f(1, 0, 0); glVertex3f(-1, 0, 1);
  glEnd();

  glFlush();
}

// Sets up global attributes like clear color and drawing color, enables and
// initializes any needed modes (in this case we want backfaces culled), and
// sets up the desired projection and modelview matrices. It is cleaner to
// define these operations in a function separate from main().
void init() {

  // Set the current clear color to sky blue and the current drawing color to
  // white.
  glClearColor(0.1, 0.39, 0.88, 1.0);
  glColor3f(1.0, 1.0, 1.0);

  // Tell the rendering engine not to draw backfaces.  Without this code,
  // all four faces of the tetrahedron would be drawn and it is possible
  // that faces farther away could be drawn after nearer to the viewer.
  // Since there is only one closed polyhedron in the whole scene,
  // eliminating the drawing of backfaces gives us the realism we need.
  // THIS DOES NOT WORK IN GENERAL.
  glEnable(GL_CULL_FACE);
  glCullFace(GL_BACK);

  // Set the camera lens so that we have a perspective viewing volume whose
  // horizontal bounds at the near clipping plane are -2..2 and vertical
  // bounds are -1.5..1.5.  The near clipping plane is 1 unit from the camera
  // and the far clipping plane is 40 units away.
  glMatrixMode(GL_PROJECTION);
  glLoadIdentity();
  glFrustum(-2, 2, -1.5, 1.5, 1, 40);

  // Set up transforms so that the tetrahedron which is defined right at
  // the origin will be rotated and moved into the view volume.  First we
  // rotate 70 degrees around y so we can see a lot of the left side.
  // Then we rotate 50 degrees around x to "drop" the top of the pyramid
  // down a bit.  Then we move the object back 3 units "into the screen".
  glMatrixMode(GL_MODELVIEW);
  glLoadIdentity();
  glTranslatef(0, 0, -3);
  glRotatef(50, 1, 0, 0);
  glRotatef(70, 0, 1, 0);
}

// Initializes GLUT, the display mode, and main window; registers callbacks;
// does application initialization; enters the main event loop.
int main(int argc, char** argv) {
  glutInit(&argc, argv);
  glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
  glutInitWindowPosition(80, 80);
  glutInitWindowSize(800, 600);
  glutCreateWindow("A Simple Tetrahedron");
  glutDisplayFunc(display);
  init();
  glutMainLoop();
}

Answer 1

可能是最好的解決方案 - 放棄GLUT。 我建議你改用GLFW 。

GLFW：

• 有更多的功能。
• 更簡單。
• 有一個更好的API設計。
• 是現代的，積極發展。
• 有一個非常好的文檔。
• 只是工作。