1/*
2 * Copyright © 2010 Intel Corporation
3 * Copyright © 2011 Apple Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Soft-
7 * ware"), to deal in the Software without restriction, including without
8 * limitation the rights to use, copy, modify, merge, publish, distribute,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, provided that the above copyright
11 * notice(s) and this permission notice appear in all copies of the Soft-
12 * ware and that both the above copyright notice(s) and this permission
13 * notice appear in supporting documentation.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
17 * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
18 * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
19 * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
20 * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
21 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
22 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
23 * MANCE OF THIS SOFTWARE.
24 *
25 * Except as contained in this notice, the name of a copyright holder shall
26 * not be used in advertising or otherwise to promote the sale, use or
27 * other dealings in this Software without prior written authorization of
28 * the copyright holder.
29 *
30 * Authors:
31 *   Kristian Høgsberg (krh@bitplanet.net)
32 */
33
34#if defined(GLX_USE_APPLEGL)
35
36#include <stdbool.h>
37#include <dlfcn.h>
38
39#include "glxclient.h"
40#include "apple/apple_glx_context.h"
41#include "apple/apple_glx.h"
42#include "apple/apple_cgl.h"
43#include "glx_error.h"
44
45static void
46applegl_destroy_context(struct glx_context *gc)
47{
48   apple_glx_destroy_context(&gc->driContext, gc->psc->dpy);
49}
50
51static int
52applegl_bind_context(struct glx_context *gc, struct glx_context *old,
53		     GLXDrawable draw, GLXDrawable read)
54{
55   Display *dpy = gc->psc->dpy;
56   bool error = apple_glx_make_current_context(dpy,
57					       (old && old != &dummyContext) ? old->driContext : NULL,
58					       gc ? gc->driContext : NULL, draw);
59
60   apple_glx_diagnostic("%s: error %s\n", __func__, error ? "YES" : "NO");
61   if (error)
62      return 1; /* GLXBadContext is the same as Success (0) */
63
64   apple_glapi_set_dispatch();
65
66   return Success;
67}
68
69static void
70applegl_unbind_context(struct glx_context *gc, struct glx_context *new)
71{
72   Display *dpy;
73   bool error;
74
75   /* If we don't have a context, then we have nothing to unbind */
76   if (!gc)
77      return;
78
79   /* If we have a new context, keep this one around and remove it during bind. */
80   if (new)
81      return;
82
83   dpy = gc->psc->dpy;
84
85   error = apple_glx_make_current_context(dpy,
86					  (gc != &dummyContext) ? gc->driContext : NULL,
87					  NULL, None);
88
89   apple_glx_diagnostic("%s: error %s\n", __func__, error ? "YES" : "NO");
90}
91
92static void
93applegl_wait_gl(struct glx_context *gc)
94{
95   glFinish();
96}
97
98static void
99applegl_wait_x(struct glx_context *gc)
100{
101   Display *dpy = gc->psc->dpy;
102   apple_glx_waitx(dpy, gc->driContext);
103}
104
105void *
106applegl_get_proc_address(const char *symbol)
107{
108   return dlsym(apple_cgl_get_dl_handle(), symbol);
109}
110
111static const struct glx_context_vtable applegl_context_vtable = {
112   .destroy             = applegl_destroy_context,
113   .bind                = applegl_bind_context,
114   .unbind              = applegl_unbind_context,
115   .wait_gl             = applegl_wait_gl,
116   .wait_x              = applegl_wait_x,
117};
118
119struct glx_context *
120applegl_create_context(struct glx_screen *psc,
121		       struct glx_config *config,
122		       struct glx_context *shareList, int renderType)
123{
124   struct glx_context *gc;
125   int errorcode;
126   bool x11error;
127   Display *dpy = psc->dpy;
128   int screen = psc->scr;
129
130   /* TODO: Integrate this with apple_glx_create_context and make
131    * struct apple_glx_context inherit from struct glx_context. */
132
133   if (!config)
134      return NULL;
135
136   gc = calloc(1, sizeof(*gc));
137   if (gc == NULL)
138      return NULL;
139
140   if (!glx_context_init(gc, psc, config)) {
141      free(gc);
142      return NULL;
143   }
144
145   gc->vtable = &applegl_context_vtable;
146   gc->driContext = NULL;
147
148   /* TODO: darwin: Integrate with above to do indirect */
149   if(apple_glx_create_context(&gc->driContext, dpy, screen, config,
150			       shareList ? shareList->driContext : NULL,
151			       &errorcode, &x11error)) {
152      __glXSendError(dpy, errorcode, 0, X_GLXCreateContext, x11error);
153      gc->vtable->destroy(gc);
154      return NULL;
155   }
156
157   gc->currentContextTag = -1;
158   gc->config = config;
159   gc->isDirect = GL_TRUE;
160   gc->xid = 1; /* Just something not None, so we know when to destroy
161		 * it in MakeContextCurrent. */
162
163   return gc;
164}
165
166static const struct glx_screen_vtable applegl_screen_vtable = {
167   .create_context         = applegl_create_context,
168   .create_context_attribs = NULL,
169   .query_renderer_integer = NULL,
170   .query_renderer_string  = NULL,
171};
172
173_X_HIDDEN struct glx_screen *
174applegl_create_screen(int screen, struct glx_display * priv)
175{
176   struct glx_screen *psc;
177
178   psc = calloc(1, sizeof *psc);
179   if (psc == NULL)
180      return NULL;
181
182   glx_screen_init(psc, screen, priv);
183   psc->vtable = &applegl_screen_vtable;
184
185   return psc;
186}
187
188_X_HIDDEN int
189applegl_create_display(struct glx_display *glx_dpy)
190{
191   if(!apple_init_glx(glx_dpy->dpy))
192      return 1;
193
194   return GLXBadContext;
195}
196
197#endif
198