Function ThreadMain

test/browser/gl_in_pthread.c:26–63

int result = 0;

void *ThreadMain(void *arg)
{
  printf("ThreadMain\n");
  switch(numThreadsCreated)
  {
    case 1: printf("Thread 1 started: you should see the WebGL canvas fade from black to red.\n"); break;
    case 2: printf("Thread 2 started: you should see the WebGL canvas fade from black to green.\n"); break;
    case 3: printf("Thread 3 started: you should see the WebGL canvas fade from black to blue.\n"); break;
  }
  EmscriptenWebGLContextAttributes attr;
  emscripten_webgl_init_context_attributes(&attr);
  attr.explicitSwapControl = true;
  ctx = emscripten_webgl_create_context("#canvas", &attr);
  emscripten_webgl_make_context_current(ctx);

  double color = 0;
  for(int i = 0; i < 100; ++i)
  {
    color += 0.01;
    switch(numThreadsCreated)
    {
      case 1: glClearColor(color, 0, 0, 1); break;
      case 2: glClearColor(0, color, 0, 1); break;
      case 3: glClearColor(0, 0, color, 1); break;
    }
    glClear(GL_COLOR_BUFFER_BIT);
    EMSCRIPTEN_RESULT r = emscripten_webgl_commit_frame();
    assert(r == EMSCRIPTEN_RESULT_SUCCESS);

    double now = emscripten_get_now();
    while(emscripten_get_now() - now < 16) /*no-op*/;
  }

  emscripten_webgl_make_context_current(0);
  emscripten_webgl_destroy_context(ctx);
  printf("Thread quit\n");
  pthread_exit(0);
}

void CreateThread()
{