bionic (3) memoryBarrier.3G.gz

Provided by: opengl-4-man-doc_1.0~svn33624-1_all bug

NAME
       memoryBarrier - controls the ordering of memory transactions issued by a single shader invocation


DECLARATION
       uint memoryBarrier(void);


DESCRIPTION
       memoryBarrier waits on the completion of all memory accesses resulting from the use of image variables or
       atomic counters and then returns with no other effect. When this function returns, the results of any
       memory stores performed using coherent variables performed prior to the call will be visible to any
       future coherent memory access to the same addresses from other shader invocations. In particular, the
       values written this way in one shader stage are guaranteed to be visible to coherent memory accesses
       performed by shader invocations in subsequent stages when those invocations were triggered by the
       execution of the original shader invocation (e.g., fragment shader invocations for a primitive resulting
       from a particular geometry shader invocation).


VERSION SUPPORT
       ┌──────────────┬───────────────────────────────────────────────────────────────────────────────────┐
       │              │        OpenGL Shading Language Version                                            │
       ├──────────────┼──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┤
       │Function      │ 1.10 │ 1.20 │ 1.30 │ 1.40 │ 1.50 │ 3.30 │ 4.00 │ 4.10 │ 4.20 │ 4.30 │ 4.40 │ 4.50 │
       │Name          │      │      │      │      │      │      │      │      │      │      │      │      │
       ├──────────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┤
       │memoryBarrier │  -   │  -   │  -   │  -   │  -   │  -   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │
       └──────────────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┘


SEE ALSO
       imageLoad(), imageStore(), imageAtomicAdd(), imageAtomicMin(), imageAtomicMax(), imageAtomicXor(),
       imageAtomicOr(), imageAtomicAnd(), imageAtomicExchange(), imageAtomicCompSwap(), groupMemoryBarrier(),
       memoryBarrierImage(), memoryBarrierBuffer(), memoryBarrierShared()


       Copyright © 2011-2014 Khronos Group. This material may be distributed subject to the terms and conditions
       set forth in the Open Publication License, v 1.0, 8 June 1999.  http://opencontent.org/openpub/.


       Copyright © 2011-2014 Khronos Group

[FIXME: source]                                    01/03/2018                                  MEMORYBARRIER(3G)