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1 Name | 1 Name |
2 | 2 |
3 CHROMIUM_sync_point | 3 CHROMIUM_sync_point |
4 | 4 |
5 Name Strings | 5 Name Strings |
6 | 6 |
7 GL_CHROMIUM_sync_point | 7 GL_CHROMIUM_sync_point |
8 | 8 |
9 Version | 9 Version |
10 | 10 |
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56 void GenSyncTokenCHROMIUM(uint64 fence_sync, GLbyte *sync_token) | 56 void GenSyncTokenCHROMIUM(uint64 fence_sync, GLbyte *sync_token) |
57 | 57 |
58 converts <fence_sync> which is only visible to the current context to a | 58 converts <fence_sync> which is only visible to the current context to a |
59 sync token which may be waited upon by any contexts on the same server. | 59 sync token which may be waited upon by any contexts on the same server. |
60 The <fence_sync> command must be flushed before this function may be | 60 The <fence_sync> command must be flushed before this function may be |
61 called, otherwise an INVALID_OPERATION error is generated. The generated | 61 called, otherwise an INVALID_OPERATION error is generated. The generated |
62 <sync_token> must be generated on the same context as when | 62 <sync_token> must be generated on the same context as when |
63 InsertFenceSyncCHROMIUM was called. The <sync_token> can be passed and | 63 InsertFenceSyncCHROMIUM was called. The <sync_token> can be passed and |
64 used by any context on the same server, including other context groups. | 64 used by any context on the same server, including other context groups. |
65 | 65 |
66 <sync_token> returns a GL_SYNC_POINT_SIZE_CHROMIUM byte sized name. | 66 <sync_token> returns a GL_SYNC_TOKEN_SIZE_CHROMIUM byte sized name. |
67 | 67 |
68 The command | 68 The command |
69 | 69 |
70 void GenUnverifiedSyncTokenCHROMIUM(uint64 fence_sync, | 70 void GenUnverifiedSyncTokenCHROMIUM(uint64 fence_sync, |
71 GLbyte *sync_token) | 71 GLbyte *sync_token) |
72 | 72 |
73 converts <fence_sync>, which is only visible to the current context, to a | 73 converts <fence_sync>, which is only visible to the current context, to a |
74 sync token, which may be waited upon by a context which only needs flush | 74 sync token, which may be waited upon by a context which only needs flush |
75 order guarantee with respect to the fence sync context. For example, if | 75 order guarantee with respect to the fence sync context. For example, if |
76 the two contexts are on the same channel but on different streams, flush | 76 the two contexts are on the same channel but on different streams, flush |
77 order guarantee is enough to guarantee that the server will receive the | 77 order guarantee is enough to guarantee that the server will receive the |
78 release command before the wait command. The <fence_sync> command must be | 78 release command before the wait command. The <fence_sync> command must be |
79 flushed before this function may be called, otherwise an INVALID_OPERATION | 79 flushed before this function may be called, otherwise an INVALID_OPERATION |
80 error is generated. The generated <sync_token> must be generated on the | 80 error is generated. The generated <sync_token> must be generated on the |
81 same context as when InsertFenceSyncCHROMIUM was called. | 81 same context as when InsertFenceSyncCHROMIUM was called. |
82 | 82 |
83 The command | 83 The command |
84 | 84 |
85 void WaitSyncTokenCHROMIUM(const GLbyte *sync_token) | 85 void WaitSyncTokenCHROMIUM(const GLbyte *sync_token) |
86 | 86 |
87 causes the current context to stop submitting commands until the specified | 87 causes the current context to stop submitting commands until the specified |
88 fence sync becomes signaled. This is implemented as a server-side wait. | 88 fence sync becomes signaled. This is implemented as a server-side wait. |
89 <sync_token> is a sync token generated by GenSyncPointCHROMIUM. If | 89 <sync_token> is a sync token generated by GenSyncPointCHROMIUM. If |
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90 <sync_token> was generated by GenUnverifiedSyncTokenCHROMIUM and the | 90 <sync_token> was generated by GenUnverifiedSyncTokenCHROMIUM and the |
91 corresponding fence sync context required more than just flush ordering | 91 corresponding fence sync context required more than just flush ordering |
92 to guarantee synchronization, a INVALID_OPERATION error is generated. If | 92 to guarantee synchronization, a INVALID_OPERATION error is generated. If |
93 <sync_token> isn't a valid sync token returned by GenSyncPointCHROMIUM or | 93 <sync_token> isn't a valid sync token returned by GenSyncPointCHROMIUM or |
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94 GenUnverifiedSyncTokenCHROMIUM, the result is undefined. | 94 GenUnverifiedSyncTokenCHROMIUM, the result is undefined. |
95 | 95 |
96 New Tokens | 96 New Tokens |
97 | 97 |
98 The size of a sync token name in bytes. | 98 The size of a sync token name in bytes. |
99 | 99 |
100 GL_SYNC_TOKEN_SIZE_CHROMIUM 24 | 100 GL_SYNC_TOKEN_SIZE_CHROMIUM 24 |
101 | 101 |
102 Errors | 102 Errors |
103 | 103 |
104 INVALID_VALUE is generated if the <fence_sync> parameter of | 104 INVALID_VALUE is generated if the <fence_sync> parameter of |
105 GenSyncPointCHROMIUM is not a valid local fence sync name. | 105 GenSyncPointCHROMIUM is not a valid local fence sync name. |
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106 | 106 |
107 INVALID_OPERATION is generated if the <fence_sync> parameter of | 107 INVALID_OPERATION is generated if the <fence_sync> parameter of |
108 GenSyncPointCHROMIUM has not been flushed to the server. | 108 GenSyncPointCHROMIUM has not been flushed to the server. |
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109 | 109 |
110 INVALID_OPERATION is generated if the <sync_token> parameter of | 110 INVALID_OPERATION is generated if the <sync_token> parameter of |
111 WaitSyncTokenCHROMIUM was generated using GenUnverifiedSyncTokenCHROMIUM, | 111 WaitSyncTokenCHROMIUM was generated using GenUnverifiedSyncTokenCHROMIUM, |
112 but the two contexts must be synchronized with more than just flush order. | 112 but the two contexts must be synchronized with more than just flush order. |
113 | 113 |
114 New State | 114 New State |
115 | 115 |
116 None. | 116 None. |
117 | 117 |
118 Revision History | 118 Revision History |
119 | 119 |
120 2/25/2013 Documented the extension | 120 2/25/2013 Documented the extension |
121 | 121 |
122 9/8/2015 Modified functions InsertFenceSyncCHROMIUM, | 122 9/8/2015 Modified functions InsertFenceSyncCHROMIUM, |
123 GenSyncTokenCHROMIUM, and WaitSyncTokenCHROMIUM. | 123 GenSyncTokenCHROMIUM, and WaitSyncTokenCHROMIUM. |
124 | 124 |
125 10/12/2015 Added function GenUnverifiedSyncTokenCHROMIUM. | 125 10/12/2015 Added function GenUnverifiedSyncTokenCHROMIUM. |
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