diff --git a/core/config.mk b/core/config.mk
index 346ebc6..eb21943 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -216,6 +216,7 @@
 JARJAR := $(HOST_OUT_JAVA_LIBRARIES)/jarjar.jar
 PROGUARD := external/proguard/bin/proguard.sh
 JAVATAGS := build/tools/java-event-log-tags.py
+SLANG := $(HOST_OUT_EXECUTABLES)/slang$(HOST_EXECUTABLE_SUFFIX)
 
 # ACP is always for the build OS, not for the host OS
 ACP := $(BUILD_OUT_EXECUTABLES)/acp$(BUILD_EXECUTABLE_SUFFIX)
diff --git a/core/definitions.mk b/core/definitions.mk
index 87e9013..5e1df45 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -236,6 +236,19 @@
 endef
 
 ###########################################################
+## Find all of the RenderScript files under the named directories.
+##  Meant to be used like:
+##    SRC_FILES := $(call all-renderscript-files-under,src)
+###########################################################
+
+define all-renderscript-files-under
+$(patsubst ./%,%, \
+  $(shell cd $(LOCAL_PATH) ; \
+          find $(1) -name "*.rs" -and -not -name ".*") \
+  )
+endef
+
+###########################################################
 ## Find all of the html files under the named directories.
 ## Meant to be used like:
 ##    SRC_FILES := $(call all-html-files-under,src tests)
@@ -732,6 +745,29 @@
 rm -f $(@:$1=$(YACC_HEADER_SUFFIX))
 endef
 
+###########################################################
+## Commands to compile RenderScript
+###########################################################
+# $(1) the .rs file
+define _compile-one-rs-file
+$(hide) $(SLANG) \
+  --allow-rs-prefix \
+  -o $(PRIVATE_RS_OUTPUT_DIR)/res/raw/$(patsubst %.rs,%.bc,$(notdir $(1))) \
+  -p $(PRIVATE_RS_OUTPUT_DIR)/src \
+  $(1)
+
+endef
+
+define transform-renderscripts-to-java-and-bc
+@echo "RenderScript: $(PRIVATE_MODULE) <= $(PRIVATE_RS_SOURCE_FILES)"
+$(hide) rm -rf $(PRIVATE_RS_OUTPUT_DIR)
+$(hide) mkdir -p $(PRIVATE_RS_OUTPUT_DIR)/res/raw
+$(hide) mkdir -p $(PRIVATE_RS_OUTPUT_DIR)/src
+$(foreach rs,$(PRIVATE_RS_SOURCE_FILES),$(call _compile-one-rs-file,$(rs)))
+$(hide) mkdir -p $(dir $@)
+$(hide) touch $@
+endef
+
 
 ###########################################################
 ## Commands for running aidl
diff --git a/core/java.mk b/core/java.mk
index 4c34479..dd46b5d 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -94,6 +94,30 @@
 
 LOCAL_INTERMEDIATE_SOURCE_DIR := $(intermediates.COMMON)/src
 
+###############################################################
+## .rs files: RenderScript sources to .java files and .bc files
+###############################################################
+renderscript_sources := $(filter %.rs,$(LOCAL_SRC_FILES))
+# Because names of the java files from RenderScript are unknown until the
+# .rs file(s) are compiled, we have to depend on a timestamp file.
+RenderScript_file_stamp :=
+ifneq ($(renderscript_sources),)
+renderscript_sources_fullpath := $(addprefix $(LOCAL_PATH)/, $(renderscript_sources))
+RenderScript_file_stamp := $(LOCAL_INTERMEDIATE_SOURCE_DIR)/RenderScript.stamp
+
+$(RenderScript_file_stamp): PRIVATE_RS_SOURCE_FILES := $(renderscript_sources_fullpath)
+# By putting the generated java files into $(LOCAL_INTERMEDIATE_SOURCE_DIR), they will be
+# automatically found by the java compiling function transform-java-to-classes.jar.
+$(RenderScript_file_stamp): PRIVATE_RS_OUTPUT_DIR := $(LOCAL_INTERMEDIATE_SOURCE_DIR)/renderscript
+# TODO: slang support to generate implicit dependency derived from "include" directives.
+$(RenderScript_file_stamp): $(renderscript_sources_fullpath) $(SLANG)
+	$(transform-renderscripts-to-java-and-bc)
+
+LOCAL_INTERMEDIATE_TARGETS += $(RenderScript_file_stamp)
+# Make sure the generated resource will be added to the apk.
+LOCAL_RESOURCE_DIR := $(LOCAL_INTERMEDIATE_SOURCE_DIR)/renderscript/res $(LOCAL_RESOURCE_DIR)
+endif
+
 # TODO: It looks like the only thing we need from base_rules is
 # all_java_sources.  See if we can get that by adding a
 # common_java.mk, and moving the include of base_rules.mk to
@@ -151,6 +175,11 @@
 $(full_classes_compiled_jar): $(java_sources) $(full_java_lib_deps)
 	$(transform-java-to-classes.jar)
 
+# source files generated from RenderScript must be generated before java compiling
+ifneq ($(RenderScript_file_stamp),)
+$(full_classes_compiled_jar): $(RenderScript_file_stamp)
+endif
+
 # All of the rules after full_classes_compiled_jar are very unlikely
 # to fail except for bugs in their respective tools.  If you would
 # like to run these rules, add the "all" modifier goal to the make
diff --git a/core/package.mk b/core/package.mk
index bffda93..c14e660 100644
--- a/core/package.mk
+++ b/core/package.mk
@@ -183,7 +183,7 @@
 $(R_file_stamp): PRIVATE_RESOURCE_PUBLICS_OUTPUT := \
 			$(intermediates.COMMON)/public_resources.xml
 $(R_file_stamp): PRIVATE_PROGUARD_OPTIONS_FILE := $(proguard_options_file)
-$(R_file_stamp): $(all_res_assets) $(full_android_manifest) $(AAPT) | $(ACP)
+$(R_file_stamp): $(all_res_assets) $(full_android_manifest) $(RenderScript_file_stamp) $(AAPT) | $(ACP)
 	@echo "target R.java/Manifest.java: $(PRIVATE_MODULE) ($@)"
 	@rm -f $@
 	$(create-resource-java-files)