kmscube/cube-x11.cpp

   1
   2 #include <X11/Xlib-xcb.h>
   3
   4 #include "cube.h"
   5 #include "cube-egl.h"
   6 #include "cube-gles2.h"
   7
   8 #include "test.h"
   9
  10 using namespace std;
  11
  12 void main_x11()
  13 {
  14         Display* dpy = XOpenDisplay(NULL);
  15
  16         xcb_connection_t *c = XGetXCBConnection(dpy);
  17
  18         /* Acquire event queue ownership */
  19         XSetEventQueueOwner(dpy, XCBOwnsEventQueue);
  20
  21         /* Get the first screen */
  22         const xcb_setup_t      *setup  = xcb_get_setup (c);
  23         xcb_screen_t           *screen = xcb_setup_roots_iterator (setup).data;
  24
  25         /* Create the window */
  26
  27         uint32_t width;
  28         uint32_t height;
  29
  30         if (s_fullscreen) {
  31                 width = screen->width_in_pixels;
  32                 height = screen->height_in_pixels;
  33         } else {
  34                 width = 600;
  35                 height = 600;
  36         }
  37
  38         const uint32_t xcb_window_attrib_mask = XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK;
  39         const uint32_t xcb_window_attrib_list[] = {
  40                 // OVERRIDE_REDIRECT
  41                 0,
  42                 // EVENT_MASK
  43                 XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_KEY_PRESS,
  44         };
  45
  46         xcb_window_t window = xcb_generate_id (c);
  47         xcb_create_window (c,                    /* Connection          */
  48                            XCB_COPY_FROM_PARENT,          /* depth (same as root)*/
  49                            window,                        /* window Id           */
  50                            screen->root,                  /* parent window       */
  51                            0, 0,                          /* x, y                */
  52                            width, height,                 /* width, height       */
  53                            0,                             /* border_width        */
  54                            XCB_WINDOW_CLASS_INPUT_OUTPUT, /* class               */
  55                            screen->root_visual,           /* visual              */
  56                            xcb_window_attrib_mask,
  57                            xcb_window_attrib_list);
  58
  59 #if 0 // Doesn't work
  60         if (s_fullscreen) {
  61
  62                 xcb_intern_atom_cookie_t cookie = xcb_intern_atom(c, 0, 12, "_NET_WM_STATE");
  63                 xcb_intern_atom_reply_t* reply = xcb_intern_atom_reply(c, cookie, 0);
  64
  65                 xcb_intern_atom_cookie_t cookie2 = xcb_intern_atom(c, 0, 24, "_NET_WM_STATE_FULLSCREEN");
  66                 xcb_intern_atom_reply_t* reply2 = xcb_intern_atom_reply(c, cookie2, 0);
  67
  68                 xcb_change_property(c, XCB_PROP_MODE_REPLACE, window, reply->atom, XCB_ATOM_ATOM , 32, 1, (void*)&reply2->atom);
  69         }
  70 #endif
  71
  72         xcb_map_window (c, window);
  73         xcb_flush (c);
  74
  75         {
  76                 EglState egl(dpy);
  77                 EglSurface surface(egl, (void*)(uintptr_t)window);
  78                 GlScene scene;
  79
  80                 scene.set_viewport(width, height);
  81
  82                 unsigned framenum = 0;
  83
  84                 surface.make_current();
  85                 surface.swap_buffers();
  86
  87                 bool need_exit = false;
  88
  89                 xcb_generic_event_t *event;
  90                 while (!need_exit && (event = xcb_wait_for_event (c))) {
  91                         switch (event->response_type & ~0x80) {
  92                         case XCB_EXPOSE: {
  93
  94                                 break;
  95                         }
  96                         case XCB_KEY_PRESS: {
  97                                 xcb_key_press_event_t *kp = (xcb_key_press_event_t *)event;
  98                                 if (kp->detail == 24) {
  99                                         printf("Exit due to keypress\n");
 100                                         need_exit = true;
 101                                 }
 102
 103                                 break;
 104                         }
 105                         }
 106
 107                         free(event);
 108
 109                         if (s_num_frames && framenum >= s_num_frames)
 110                                 need_exit = true;
 111
 112                         // this should be in XCB_EXPOSE, but we don't get the event after swaps...
 113                         scene.draw(framenum++);
 114                         surface.swap_buffers();
 115                 }
 116         }
 117
 118         xcb_flush(c);
 119         xcb_unmap_window(c, window);
 120         xcb_destroy_window(c, window);
 121
 122         XCloseDisplay(dpy);
 123 }