Add a basic implementation of the reduce kernel API to the CPU

reference implementation.

Bug: 22631253

For now, this just runs a serial reduction on one thread.

Change-Id: I34c96d24bb6f44274de72bb53160abcf79d143b0

1 files changed, 5 insertions, 0 deletions

diff --git a/rs_hal.h b/rs_hal.h
index 6bc7d7a0..390e90df 100644
--- a/rs_hal.h
+++ b/rs_hal.h
@@ -150,6 +150,10 @@ typedef struct {
                               const void * usr,
                               size_t usrLen,
                               const RsScriptCall *sc);
+        void (*invokeReduce)(const Context *rsc, Script *s,
+                             uint32_t slot, const Allocation *ain,
+                             Allocation *aout,
+                             const RsScriptCall *sc);
         void (*invokeInit)(const Context *rsc, Script *s);
         void (*invokeFreeChildren)(const Context *rsc, Script *s);
 
@@ -381,6 +385,7 @@ enum RsHalInitEnums {
     RS_HAL_SCRIPT_DESTROY                                   = 1012,
     RS_HAL_SCRIPT_INVOKE_FOR_EACH_MULTI                     = 1013,
     RS_HAL_SCRIPT_UPDATE_CACHED_OBJECT                      = 1014,
+    RS_HAL_SCRIPT_INVOKE_REDUCE                             = 1015,
 
     RS_HAL_ALLOCATION_INIT                                  = 2000,
     RS_HAL_ALLOCATION_INIT_ADAPTER                          = 2001,