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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 const GLuint __glXDefaultPixelStore[9] = { 0, 0, 0, 0, 0, 0, 0, 0, 1 };
     47 
     48 int
     49 apple_get_dri_event_base(void)
     50 {
     51    if (!initialized) {
     52       fprintf(stderr,
     53               "error: dri_event_base called before apple_init_glx!\n");
     54       abort();
     55    }
     56    return dri_event_base;
     57 }
     58 
     59 static void
     60 surface_notify_handler(Display * dpy, unsigned int uid, int kind)
     61 {
     62 
     63    switch (kind) {
     64    case AppleDRISurfaceNotifyDestroyed:
     65       apple_glx_diagnostic("%s: surface destroyed %u\n", __func__, uid);
     66       apple_glx_surface_destroy(uid);
     67       break;
     68 
     69    case AppleDRISurfaceNotifyChanged:{
     70          int updated;
     71 
     72          updated = apple_glx_context_surface_changed(uid, pthread_self());
     73 
     74          apple_glx_diagnostic("surface notify updated %d\n", updated);
     75       }
     76       break;
     77 
     78    default:
     79       fprintf(stderr, "unhandled kind of event: %d in %s\n", kind, __func__);
     80    }
     81 }
     82 
     83 xp_client_id
     84 apple_glx_get_client_id(void)
     85 {
     86    static xp_client_id id;
     87 
     88    if (0 == id) {
     89       if ((XP_Success != xp_init(XP_IN_BACKGROUND)) ||
     90           (Success != xp_get_client_id(&id))) {
     91          return 0;
     92       }
     93    }
     94 
     95    return id;
     96 }
     97 
     98 /* Return true if an error occured. */
     99 bool
    100 apple_init_glx(Display * dpy)
    101 {
    102    int eventBase, errorBase;
    103    int major, minor, patch;
    104 
    105    if (!XAppleDRIQueryExtension(dpy, &eventBase, &errorBase))
    106       return true;
    107 
    108    if (!XAppleDRIQueryVersion(dpy, &major, &minor, &patch))
    109       return true;
    110 
    111    if (initialized)
    112       return false;
    113 
    114    apple_glx_log_init();
    115 
    116    apple_glx_log(ASL_LEVEL_INFO, "Initializing libGL.");
    117 
    118    apple_cgl_init();
    119    (void) apple_glx_get_client_id();
    120 
    121    XAppleDRISetSurfaceNotifyHandler(surface_notify_handler);
    122 
    123    /* This should really be per display. */
    124    dri_event_base = eventBase;
    125    initialized = true;
    126 
    127    return false;
    128 }
    129 
    130 void
    131 apple_glx_swap_buffers(void *ptr)
    132 {
    133    struct apple_glx_context *ac = ptr;
    134 
    135    /* This may not be needed with CGLFlushDrawable: */
    136    glFlush();
    137    apple_cgl.flush_drawable(ac->context_obj);
    138 }
    139 
    140 void
    141 apple_glx_waitx(Display * dpy, void *ptr)
    142 {
    143    struct apple_private_context *ac = ptr;
    144 
    145    (void) ac;
    146 
    147    glFlush();
    148    glFinish();
    149    XSync(dpy, False);
    150 }
    151