1 /**************************************************************************
2 *
3 * Copyright 2010 LunarG, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
23 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
24 * DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28
29 #include <string.h>
30
31 #include "eglsync.h"
32 #include "eglcurrent.h"
33 #include "egllog.h"
34
35
36 /**
37 * Parse the list of sync attributes and return the proper error code.
38 */
39 static EGLint
_eglParseSyncAttribList(_EGLSync * sync,const EGLint * attrib_list)40 _eglParseSyncAttribList(_EGLSync *sync, const EGLint *attrib_list)
41 {
42 EGLint i, err = EGL_SUCCESS;
43
44 if (!attrib_list)
45 return EGL_SUCCESS;
46
47 for (i = 0; attrib_list[i] != EGL_NONE; i++) {
48 EGLint attr = attrib_list[i++];
49 EGLint val = attrib_list[i];
50
51 switch (attr) {
52 default:
53 (void) val;
54 err = EGL_BAD_ATTRIBUTE;
55 break;
56 }
57
58 if (err != EGL_SUCCESS) {
59 _eglLog(_EGL_DEBUG, "bad sync attribute 0x%04x", attr);
60 break;
61 }
62 }
63
64 return err;
65 }
66
67
68 EGLBoolean
_eglInitSync(_EGLSync * sync,_EGLDisplay * dpy,EGLenum type,const EGLint * attrib_list)69 _eglInitSync(_EGLSync *sync, _EGLDisplay *dpy, EGLenum type,
70 const EGLint *attrib_list)
71 {
72 EGLint err;
73
74 if (!(type == EGL_SYNC_REUSABLE_KHR && dpy->Extensions.KHR_reusable_sync) &&
75 !(type == EGL_SYNC_FENCE_KHR && dpy->Extensions.KHR_fence_sync))
76 return _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
77
78 _eglInitResource(&sync->Resource, sizeof(*sync), dpy);
79 sync->Type = type;
80 sync->SyncStatus = EGL_UNSIGNALED_KHR;
81 sync->SyncCondition = EGL_SYNC_PRIOR_COMMANDS_COMPLETE_KHR;
82
83 err = _eglParseSyncAttribList(sync, attrib_list);
84 if (err != EGL_SUCCESS)
85 return _eglError(err, "eglCreateSyncKHR");
86
87 return EGL_TRUE;
88 }
89
90
91 EGLBoolean
_eglGetSyncAttribKHR(_EGLDriver * drv,_EGLDisplay * dpy,_EGLSync * sync,EGLint attribute,EGLint * value)92 _eglGetSyncAttribKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
93 EGLint attribute, EGLint *value)
94 {
95 if (!value)
96 return _eglError(EGL_BAD_PARAMETER, "eglGetConfigs");
97
98 switch (attribute) {
99 case EGL_SYNC_TYPE_KHR:
100 *value = sync->Type;
101 break;
102 case EGL_SYNC_STATUS_KHR:
103 *value = sync->SyncStatus;
104 break;
105 case EGL_SYNC_CONDITION_KHR:
106 if (sync->Type != EGL_SYNC_FENCE_KHR)
107 return _eglError(EGL_BAD_ATTRIBUTE, "eglGetSyncAttribKHR");
108 *value = sync->SyncCondition;
109 break;
110 default:
111 return _eglError(EGL_BAD_ATTRIBUTE, "eglGetSyncAttribKHR");
112 break;
113 }
114
115 return EGL_TRUE;
116 }
117