glTextureBarrier - controls the ordering of reads and writes to rendered fragments across drawing

voidglTextureBarrier(void);

       Copyright © 2014 Khronos Group

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

       The values of rendered fragments are undefined when a shader stage fetches texels and the same texels are
       written via fragment shader outputs, even if the reads and writes are not in the same drawing command. To
       safely read the result of a written texel via a texel fetch in a subsequent drawing command, call
       glTextureBarrier between the two drawing commands to guarantee that writes have completed and caches have
       been invalidated before subsequent drawing commands are executed.

       None.

       glTextureBarrier - controls the ordering of reads and writes to rendered fragments across drawing
       commands

       The situation described above is referred to as a renderingfeedbackloop and is discussed in more detail
       in section 9.3 of the OpenGL 4.5 Specification.

glMemoryBarrier()

       ┌──────────────────┬───────────────────────────────────────────────────────────────────────┐
       │                  │                OpenGLVersion                                         │
       ├──────────────────┼─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┤
       │ Function         │ 2.0 │ 2.1 │ 3.0 │ 3.1 │ 3.2 │ 3.3 │ 4.0 │ 4.1 │ 4.2 │ 4.3 │ 4.4 │ 4.5 │
       │ /                │     │     │     │     │     │     │     │     │     │     │     │     │
       │ Feature          │     │     │     │     │     │     │     │     │     │     │     │     │
       │ Name             │     │     │     │     │     │     │     │     │     │     │     │     │
       ├──────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
       │ glTextureBarrier │  -  │  -  │  -  │  -  │  -  │  -  │  -  │  -  │  -  │  -  │  -  │  ✔  │
       └──────────────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┘