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

       Copyright © 2011-2014 Khronos Group

[FIXME: source]                                    11/18/2024                                  MEMORYBARRIER(3G)

uintmemoryBarrier(void);

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).

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

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

       ┌───────────────┬───────────────────────────────────────────────────────────────────────────────────┐
       │               │        OpenGLShadingLanguageVersion                                            │
       ├───────────────┼──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┬──────┤
       │ 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 │  -   │  -   │  -   │  -   │  -   │  -   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │  ✔   │
       └───────────────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┘