gl_WorkGroupSize - contains the size of the workgroup operated on by a compute shader

       Copyright © 2012-2014 Khronos Group

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

       const uvec3 gl_WorkGroupSize ;.SH "DESCRIPTION"

       In the compute language, gl_WorkGroupSize contains the size of a workgroup declared by a compute shader.
       The size of the work group in the X, Y, and Z dimensions is stored in the x, y, and z components of
       gl_WorkGroupSize. The values stored in gl_WorkGroupSize match those specified in the required
       local_size_x, local_size_y, and local_size_z layout qualifiers for the current shader. This value is
       constant so that it can be used to size arrays of memory that can be shared within the local work group.

       gl_WorkGroupSize - contains the size of the workgroup operated on by a compute shader

gl_NumWorkGroups(), gl_WorkGroupID(), gl_LocalInvocationID()

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