GL_GLOBALINVOCATIONI(3G) [FIXME: manual] GL_GLOBALINVOCATIONI(3G)

gl_GlobalInvocationID - contains the global index of work item currently being operated on by a compute shader

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.

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 - - - - - - - - - ✔ ✔ ✔

gl_NumWorkGroups(), gl_WorkGroupID(), gl_WorkGroupSize(), gl_LocalInvocationID()

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Copyright © 2012-2014 Khronos Group

05/21/2022 [FIXME: source]