src/glx/apple/apple_glx.c

   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 "appledri.h"
  37 #include "apple_glx.h"
  38 #include "apple_glx_context.h"
  39 #include "apple_cgl.h"
  40
  41 static bool initialized = false;
  42 static int dri_event_base = 0;
  43
  44 const GLuint __glXDefaultPixelStore[9] = { 0, 0, 0, 0, 0, 0, 0, 0, 1 };
  45
  46 static bool diagnostic = false;
  47
  48 void
  49 apple_glx_diagnostic(const char *fmt, ...)
  50 {
  51    va_list vl;
  52
  53    if (diagnostic) {
  54       fprintf(stderr, "DIAG: ");
  55
  56       va_start(vl, fmt);
  57       vfprintf(stderr, fmt, vl);
  58       va_end(vl);
  59    }
  60 }
  61
  62 int
  63 apple_get_dri_event_base(void)
  64 {
  65    if (!initialized) {
  66       fprintf(stderr,
  67               "error: dri_event_base called before apple_init_glx!\n");
  68       abort();
  69    }
  70    return dri_event_base;
  71 }
  72
  73 static void
  74 surface_notify_handler(Display * dpy, unsigned int uid, int kind)
  75 {
  76
  77    switch (kind) {
  78    case AppleDRISurfaceNotifyDestroyed:
  79       apple_glx_diagnostic("%s: surface destroyed %u\n", __func__, uid);
  80       apple_glx_surface_destroy(uid);
  81       break;
  82
  83    case AppleDRISurfaceNotifyChanged:{
  84          int updated;
  85
  86          updated = apple_glx_context_surface_changed(uid, pthread_self());
  87
  88          apple_glx_diagnostic("surface notify updated %d\n", updated);
  89       }
  90       break;
  91
  92    default:
  93       fprintf(stderr, "unhandled kind of event: %d in %s\n", kind, __func__);
  94    }
  95 }
  96
  97 xp_client_id
  98 apple_glx_get_client_id(void)
  99 {
 100    static xp_client_id id;
 101
 102    if (0 == id) {
 103       if ((XP_Success != xp_init(XP_IN_BACKGROUND)) ||
 104           (Success != xp_get_client_id(&id))) {
 105          return 0;
 106       }
 107    }
 108
 109    return id;
 110 }
 111
 112 /* Return true if an error occured. */
 113 bool
 114 apple_init_glx(Display * dpy)
 115 {
 116    int eventBase, errorBase;
 117    int major, minor, patch;
 118
 119    if (!XAppleDRIQueryExtension(dpy, &eventBase, &errorBase))
 120       return true;
 121
 122    if (!XAppleDRIQueryVersion(dpy, &major, &minor, &patch))
 123       return true;
 124
 125    if (initialized)
 126       return false;
 127
 128    if (getenv("LIBGL_DIAGNOSTIC")) {
 129       printf("initializing libGL in %s\n", __func__);
 130       diagnostic = true;
 131    }
 132
 133    apple_cgl_init();
 134    (void) apple_glx_get_client_id();
 135
 136    XAppleDRISetSurfaceNotifyHandler(surface_notify_handler);
 137
 138    /* This should really be per display. */
 139    dri_event_base = eventBase;
 140    initialized = true;
 141
 142    return false;
 143 }
 144
 145 void
 146 apple_glx_swap_buffers(void *ptr)
 147 {
 148    struct apple_glx_context *ac = ptr;
 149
 150    /* This may not be needed with CGLFlushDrawable: */
 151    glFlush();
 152    apple_cgl.flush_drawable(ac->context_obj);
 153 }
 154
 155 void
 156 apple_glx_waitx(Display * dpy, void *ptr)
 157 {
 158    struct apple_private_context *ac = ptr;
 159
 160    (void) ac;
 161
 162    glFlush();
 163    glFinish();
 164    XSync(dpy, False);
 165 }