gl_GlobalInvocationID

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Contains the global index of work item currently being operated on by a compute shader.

Declaration[edit]

Description[edit]

In the compute language,gl_GlobalInvocationIDis 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 ofgl_GlobalInvocationIDis equal togl_WorkGroupID*gl_WorkGroupSize+gl_LocalInvocationID.


Version Support[edit]

gl_GlobalInvocationID 4.3+

See Also[edit]

 gl_NumWorkGroups , gl_WorkGroupID , gl_WorkGroupSize , gl_LocalInvocationID 


Copyright[edit]

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/.