glsl/cs: Add gl_NumWorkGroups as a system value

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>

src/glsl/builtin_variables.cpp

@@ -1058,9 +1058,9 @@ 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");
+   add_system_value(SYSTEM_VALUE_NUM_WORK_GROUPS, uvec3_t, "gl_NumWorkGroups");
    add_variable("gl_GlobalInvocationID", uvec3_t, ir_var_auto, 0);
    add_variable("gl_LocalInvocationIndex", uint_t, ir_var_auto, 0);
-   /* TODO: finish this. */
 }
 
 

src/glsl/shader_enums.h

@@ -410,6 +410,7 @@ typedef enum
    /*@{*/
    SYSTEM_VALUE_LOCAL_INVOCATION_ID,
    SYSTEM_VALUE_WORK_GROUP_ID,
+   SYSTEM_VALUE_NUM_WORK_GROUPS,
    /*@}*/
 
    /**