OPENGL用了缓存还是闪得厉害

Question

用了glDrawBuffer(GL_BACK);      
glPushMatrix(); 
glPopMatrix();     
SwapBuffers(dc.m_ps.hdc);  图形稍大，就闪得厉害。3X

Answer 1

在pixelDesc设置中，不能添加参数PFD_SUPPORT_GDI。PIXELFORMATDESCRIPTOR pixelDesc=
{
sizeof(PIXELFORMATDESCRIPTOR),                               // size of this pfd
1,                                                       // version number
PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|                   // support window, support OpenGL, double buffered, RGBA type.
PFD_DOUBLEBUFFER,
//|PFD_SUPPORT_GDI,
PFD_TYPE_RGBA,
24,                                                      // 24-bit color depth
0,0,0,0,0,0,                                             // color bits ignored
0,                                                       // no alpha buffer 
0,                                                       // shift bit ignored
0,                                                       // no accumulation buffer
0,0,0,0,                                                 // accum bits ignored
32,                                                      // 32-bit z-buffer
0,                                                       // no stencil buffer
0,                                                       // no auxiliary buffer
PFD_MAIN_PLANE,                                          // main layer    
0,                                                       // reserved 
0,0,0                                                    // layer masks ignored
};