gl_GlobalInvocationID — contains the global index of work item currently being operated on by a compute shader
in uvec3 gl_GlobalInvocationID
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
.
Variable | Version 1.10 | Version 1.20 | Version 1.30 | Version 1.40 | Version 1.50 | Version 3.30 | Version 4.00 | Version 4.10 | Version 4.20 | Version 4.30 |
---|---|---|---|---|---|---|---|---|---|---|
gl_GlobalInvocationID | - | - | - | - | - | - | - | - | - | Y |
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