使用OpenGL渲染线程

关键代码段

DWORD WINAPI GLThread(LPVOID lpParams) {   PIXELFORMATDESCRIPTOR pfd = {0};   HDC hDC = GetDC(hwndTest);   HGLRC hRC = 0;      /* Set absolute minimum format attributes; i.e. select default mode */   pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);   pfd.nVersion = 1;   pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;   pfd.iPixelType = PFD_TYPE_RGBA;   SetPixelFormat(hDC, ChoosePixelFormat(hDC, &pfd), &pfd);hRC = wglCreateContext(hDC);wglMakeCurrent(hDC, hRC);float color[3][3]={1.0f, 1.0f, 0.0f,0.0f, 1.0f, 1.0f,1.0f, 0.0f, 1.0f};int nSwitch = 0;while (!done){nSwitch++;if (nSwitch>2)nSwitch = 0;glClearColor(color[nSwitch][0], color[nSwitch][1], color[nSwitch][2], 0.0f);glClear(GL_COLOR_BUFFER_BIT);SwapBuffers(hDC);Sleep(500);   }return 0;}