gl_GlobalInvocationID
contains the global index of work item currently being operated on by a compute shader
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DECLARATION
in uvec3 gl_GlobalInvocationID ;.SH "DESCRIPTION"
In the compute language, gl_GlobalInvocationID is a derived input variable containing the n-dimensional index of the work invocation within the global work group that the current shader is executing on. The value of gl_GlobalInvocationID is equal to gl_WorkGroupID * gl_WorkGroupSize + gl_LocalInvocationID.
VERSION SUPPORT
| OpenGL Shading Language Version | ||||||||||||
| Variable Name | 1.10 | 1.20 | 1.30 | 1.40 | 1.50 | 3.30 | 4.00 | 4.10 | 4.20 | 4.30 | 4.40 | 4.50 |
| gl_GlobalInvocationID | - | - | - | - | - | - | - | - | - | ✔ | ✔ | ✔ |
SEE ALSO
gl_NumWorkGroups(), gl_WorkGroupID(), gl_WorkGroupSize(), gl_LocalInvocationID()
COPYRIGHT
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
Copyright © 2012-2014 Khronos Group