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      1 /*
      2  Copyright (c) 2008, 2009 Apple Inc.
      3 
      4  Permission is hereby granted, free of charge, to any person
      5  obtaining a copy of this software and associated documentation files
      6  (the "Software"), to deal in the Software without restriction,
      7  including without limitation the rights to use, copy, modify, merge,
      8  publish, distribute, sublicense, and/or sell copies of the Software,
      9  and to permit persons to whom the Software is furnished to do so,
     10  subject to the following conditions:
     11 
     12  The above copyright notice and this permission notice shall be
     13  included in all copies or substantial portions of the Software.
     14 
     15  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     16  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     17  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     18  NONINFRINGEMENT.  IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT
     19  HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
     20  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     21  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     22  DEALINGS IN THE SOFTWARE.
     23 
     24  Except as contained in this notice, the name(s) of the above
     25  copyright holders shall not be used in advertising or otherwise to
     26  promote the sale, use or other dealings in this Software without
     27  prior written authorization.
     28 */
     29 
     30 #include <stdio.h>
     31 #include <stdlib.h>
     32 #include <string.h>
     33 #include <assert.h>
     34 #include <stdarg.h>
     35 #include <dlfcn.h>
     36 #include <pthread.h>
     37 #include <inttypes.h>
     38 #include "appledri.h"
     39 #include "apple_glx.h"
     40 #include "apple_glx_context.h"
     41 #include "apple_cgl.h"
     42 
     43 static bool initialized = false;
     44 static int dri_event_base = 0;
     45 
     46 int
     47 apple_get_dri_event_base(void)
     48 {
     49    if (!initialized) {
     50       fprintf(stderr,
     51               "error: dri_event_base called before apple_init_glx!\n");
     52       abort();
     53    }
     54    return dri_event_base;
     55 }
     56 
     57 static void
     58 surface_notify_handler(Display * dpy, unsigned int uid, int kind)
     59 {
     60 
     61    switch (kind) {
     62    case AppleDRISurfaceNotifyDestroyed:
     63       apple_glx_diagnostic("%s: surface destroyed %u\n", __func__, uid);
     64       apple_glx_surface_destroy(uid);
     65       break;
     66 
     67    case AppleDRISurfaceNotifyChanged:{
     68          int updated;
     69 
     70          updated = apple_glx_context_surface_changed(uid, pthread_self());
     71 
     72          apple_glx_diagnostic("surface notify updated %d\n", updated);
     73       }
     74       break;
     75 
     76    default:
     77       fprintf(stderr, "unhandled kind of event: %d in %s\n", kind, __func__);
     78    }
     79 }
     80 
     81 xp_client_id
     82 apple_glx_get_client_id(void)
     83 {
     84    static xp_client_id id;
     85 
     86    if (0 == id) {
     87       if ((XP_Success != xp_init(XP_IN_BACKGROUND)) ||
     88           (Success != xp_get_client_id(&id))) {
     89          return 0;
     90       }
     91    }
     92 
     93    return id;
     94 }
     95 
     96 /* Return true if an error occurred. */
     97 bool
     98 apple_init_glx(Display * dpy)
     99 {
    100    int eventBase, errorBase;
    101    int major, minor, patch;
    102 
    103    if (!XAppleDRIQueryExtension(dpy, &eventBase, &errorBase))
    104       return true;
    105 
    106    if (!XAppleDRIQueryVersion(dpy, &major, &minor, &patch))
    107       return true;
    108 
    109    if (initialized)
    110       return false;
    111 
    112    apple_glx_log_init();
    113 
    114    apple_glx_log(ASL_LEVEL_INFO, "Initializing libGL.");
    115 
    116    apple_cgl_init();
    117    (void) apple_glx_get_client_id();
    118 
    119    XAppleDRISetSurfaceNotifyHandler(surface_notify_handler);
    120 
    121    /* This should really be per display. */
    122    dri_event_base = eventBase;
    123    initialized = true;
    124 
    125    return false;
    126 }
    127 
    128 void
    129 apple_glx_swap_buffers(void *ptr)
    130 {
    131    struct apple_glx_context *ac = ptr;
    132 
    133    apple_cgl.flush_drawable(ac->context_obj);
    134 }
    135 
    136 void
    137 apple_glx_waitx(Display * dpy, void *ptr)
    138 {
    139    struct apple_private_context *ac = ptr;
    140 
    141    (void) ac;
    142 
    143    glFlush();
    144    glFinish();
    145    XSync(dpy, False);
    146 }
    147