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-rw-r--r--src/glsl/builtin_variables.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/glsl/builtin_variables.cpp b/src/glsl/builtin_variables.cpp
index f185d939444..fbcec353a4a 100644
--- a/src/glsl/builtin_variables.cpp
+++ b/src/glsl/builtin_variables.cpp
@@ -1055,6 +1055,7 @@ builtin_variable_generator::generate_cs_special_vars()
{
add_system_value(SYSTEM_VALUE_LOCAL_INVOCATION_ID, uvec3_t,
"gl_LocalInvocationID");
+ add_system_value(SYSTEM_VALUE_WORK_GROUP_ID, uvec3_t, "gl_WorkGroupID");
/* TODO: finish this. */
}