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 <inttypes.h>
30 #include <string.h>
31
32 #include "eglsync.h"
33 #include "eglcurrent.h"
34 #include "egldriver.h"
35 #include "egllog.h"
36
37
38 /**
39 * Parse the list of sync attributes and return the proper error code.
40 */
41 static EGLint
_eglParseSyncAttribList(_EGLSync * sync,const EGLAttrib * attrib_list)42 _eglParseSyncAttribList(_EGLSync *sync, const EGLAttrib *attrib_list)
43 {
44 EGLint i;
45
46 if (!attrib_list)
47 return EGL_SUCCESS;
48
49 for (i = 0; attrib_list[i] != EGL_NONE; i++) {
50 EGLAttrib attr = attrib_list[i++];
51 EGLAttrib val = attrib_list[i];
52 EGLint err = EGL_SUCCESS;
53
54 switch (attr) {
55 case EGL_CL_EVENT_HANDLE_KHR:
56 if (sync->Type == EGL_SYNC_CL_EVENT_KHR) {
57 sync->CLEvent = val;
58 } else {
59 err = EGL_BAD_ATTRIBUTE;
60 }
61 break;
62 case EGL_SYNC_NATIVE_FENCE_FD_ANDROID:
63 if (sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID) {
64 /* we take ownership of the native fd, so no dup(): */
65 sync->SyncFd = val;
66 } else {
67 err = EGL_BAD_ATTRIBUTE;
68 }
69 break;
70 default:
71 err = EGL_BAD_ATTRIBUTE;
72 break;
73 }
74
75 if (err != EGL_SUCCESS) {
76 _eglLog(_EGL_DEBUG, "bad sync attribute 0x%" PRIxPTR, attr);
77 return err;
78 }
79 }
80
81 return EGL_SUCCESS;
82 }
83
84
85 EGLBoolean
_eglInitSync(_EGLSync * sync,_EGLDisplay * disp,EGLenum type,const EGLAttrib * attrib_list)86 _eglInitSync(_EGLSync *sync, _EGLDisplay *disp, EGLenum type,
87 const EGLAttrib *attrib_list)
88 {
89 EGLint err;
90
91 _eglInitResource(&sync->Resource, sizeof(*sync), disp);
92 sync->Type = type;
93 sync->SyncStatus = EGL_UNSIGNALED_KHR;
94 sync->SyncFd = EGL_NO_NATIVE_FENCE_FD_ANDROID;
95
96 err = _eglParseSyncAttribList(sync, attrib_list);
97
98 switch (type) {
99 case EGL_SYNC_CL_EVENT_KHR:
100 sync->SyncCondition = EGL_SYNC_CL_EVENT_COMPLETE_KHR;
101 break;
102 case EGL_SYNC_NATIVE_FENCE_ANDROID:
103 if (sync->SyncFd == EGL_NO_NATIVE_FENCE_FD_ANDROID)
104 sync->SyncCondition = EGL_SYNC_PRIOR_COMMANDS_COMPLETE_KHR;
105 else
106 sync->SyncCondition = EGL_SYNC_NATIVE_FENCE_SIGNALED_ANDROID;
107 break;
108 default:
109 sync->SyncCondition = EGL_SYNC_PRIOR_COMMANDS_COMPLETE_KHR;
110 }
111
112 if (err != EGL_SUCCESS)
113 return _eglError(err, "eglCreateSyncKHR");
114
115 if (type == EGL_SYNC_CL_EVENT_KHR && !sync->CLEvent)
116 return _eglError(EGL_BAD_ATTRIBUTE, "eglCreateSyncKHR");
117
118 return EGL_TRUE;
119 }
120
121
122 EGLBoolean
_eglGetSyncAttrib(_EGLDisplay * disp,_EGLSync * sync,EGLint attribute,EGLAttrib * value)123 _eglGetSyncAttrib(_EGLDisplay *disp, _EGLSync *sync,
124 EGLint attribute, EGLAttrib *value)
125 {
126 switch (attribute) {
127 case EGL_SYNC_TYPE_KHR:
128 *value = sync->Type;
129 break;
130 case EGL_SYNC_STATUS_KHR:
131 /* update the sync status */
132 if (sync->SyncStatus != EGL_SIGNALED_KHR &&
133 (sync->Type == EGL_SYNC_FENCE_KHR ||
134 sync->Type == EGL_SYNC_CL_EVENT_KHR ||
135 sync->Type == EGL_SYNC_REUSABLE_KHR ||
136 sync->Type == EGL_SYNC_NATIVE_FENCE_ANDROID))
137 disp->Driver->ClientWaitSyncKHR(disp, sync, 0, 0);
138
139 *value = sync->SyncStatus;
140 break;
141 case EGL_SYNC_CONDITION_KHR:
142 if (sync->Type != EGL_SYNC_FENCE_KHR &&
143 sync->Type != EGL_SYNC_CL_EVENT_KHR &&
144 sync->Type != EGL_SYNC_NATIVE_FENCE_ANDROID)
145 return _eglError(EGL_BAD_ATTRIBUTE, "eglGetSyncAttribKHR");
146 *value = sync->SyncCondition;
147 break;
148
149 default:
150 return _eglError(EGL_BAD_ATTRIBUTE, "eglGetSyncAttribKHR");
151 break;
152 }
153
154 return EGL_TRUE;
155 }
156