Add half (fp16) to runtime API.

Bug: 7342860

Change-Id: I25c6e1a9102cb193ed47f7d0c87f5948f59b8036
(cherry picked from commit 6119da9273f88e838b2e8648bde0d40fabe51f5f)

2 files changed, 160 insertions, 1 deletions

diff --git a/scriptc/rs_allocation_data.rsh b/scriptc/rs_allocation_data.rsh
index d8785a22..69e9baf8 100644
--- a/scriptc/rs_allocation_data.rsh
+++ b/scriptc/rs_allocation_data.rsh
@@ -2524,6 +2524,66 @@ extern ulong4 __attribute__((overloadable))
     rsGetElementAt_ulong4(rs_allocation a, uint32_t x, uint32_t y, uint32_t z);
 #endif
 
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern half __attribute__((overloadable))
+    rsGetElementAt_half(rs_allocation a, uint32_t x);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern half2 __attribute__((overloadable))
+    rsGetElementAt_half2(rs_allocation a, uint32_t x);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern half3 __attribute__((overloadable))
+    rsGetElementAt_half3(rs_allocation a, uint32_t x);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern half4 __attribute__((overloadable))
+    rsGetElementAt_half4(rs_allocation a, uint32_t x);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern half __attribute__((overloadable))
+    rsGetElementAt_half(rs_allocation a, uint32_t x, uint32_t y);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern half2 __attribute__((overloadable))
+    rsGetElementAt_half2(rs_allocation a, uint32_t x, uint32_t y);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern half3 __attribute__((overloadable))
+    rsGetElementAt_half3(rs_allocation a, uint32_t x, uint32_t y);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern half4 __attribute__((overloadable))
+    rsGetElementAt_half4(rs_allocation a, uint32_t x, uint32_t y);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern half __attribute__((overloadable))
+    rsGetElementAt_half(rs_allocation a, uint32_t x, uint32_t y, uint32_t z);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern half2 __attribute__((overloadable))
+    rsGetElementAt_half2(rs_allocation a, uint32_t x, uint32_t y, uint32_t z);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern half3 __attribute__((overloadable))
+    rsGetElementAt_half3(rs_allocation a, uint32_t x, uint32_t y, uint32_t z);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern half4 __attribute__((overloadable))
+    rsGetElementAt_half4(rs_allocation a, uint32_t x, uint32_t y, uint32_t z);
+#endif
+
 /*
  * rsGetElementAtYuv_uchar_U: Get the U component of an allocation of YUVs
  *
@@ -3234,4 +3294,64 @@ extern void __attribute__((overloadable))
     rsSetElementAt_ulong4(rs_allocation a, ulong4 val, uint32_t x, uint32_t y, uint32_t z);
 #endif
 
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern void __attribute__((overloadable))
+    rsSetElementAt_half(rs_allocation a, half val, uint32_t x);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern void __attribute__((overloadable))
+    rsSetElementAt_half2(rs_allocation a, half2 val, uint32_t x);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern void __attribute__((overloadable))
+    rsSetElementAt_half3(rs_allocation a, half3 val, uint32_t x);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern void __attribute__((overloadable))
+    rsSetElementAt_half4(rs_allocation a, half4 val, uint32_t x);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern void __attribute__((overloadable))
+    rsSetElementAt_half(rs_allocation a, half val, uint32_t x, uint32_t y);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern void __attribute__((overloadable))
+    rsSetElementAt_half2(rs_allocation a, half2 val, uint32_t x, uint32_t y);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern void __attribute__((overloadable))
+    rsSetElementAt_half3(rs_allocation a, half3 val, uint32_t x, uint32_t y);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern void __attribute__((overloadable))
+    rsSetElementAt_half4(rs_allocation a, half4 val, uint32_t x, uint32_t y);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern void __attribute__((overloadable))
+    rsSetElementAt_half(rs_allocation a, half val, uint32_t x, uint32_t y, uint32_t z);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern void __attribute__((overloadable))
+    rsSetElementAt_half2(rs_allocation a, half2 val, uint32_t x, uint32_t y, uint32_t z);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern void __attribute__((overloadable))
+    rsSetElementAt_half3(rs_allocation a, half3 val, uint32_t x, uint32_t y, uint32_t z);
+#endif
+
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+extern void __attribute__((overloadable))
+    rsSetElementAt_half4(rs_allocation a, half4 val, uint32_t x, uint32_t y, uint32_t z);
+#endif
+
 #endif // RENDERSCRIPT_RS_ALLOCATION_DATA_RSH
diff --git a/scriptc/rs_value_types.rsh b/scriptc/rs_value_types.rsh
index 9dc7259e..faf397cd 100644
--- a/scriptc/rs_value_types.rsh
+++ b/scriptc/rs_value_types.rsh
@@ -26,7 +26,7 @@
  *                    8 bits           16 bits            32 bits          64 bits
  * Integer:           char, int8_t     short, int16_t     int32_t          long, long long, int64_t
  * Unsigned integer:  uchar, uint8_t   ushort, uint16_t   uint, uint32_t   ulong, uint64_t
- * Floating point:                                        float            double
+ * Floating point:                     half               float            double
  *
  *
  * Vectors:
@@ -92,6 +92,45 @@
 #define RENDERSCRIPT_RS_VALUE_TYPES_RSH
 
 /*
+ * half: 16 bit floating point value
+ *
+ * A 16 bit floating point value.
+ */
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+typedef __fp16 half;
+#endif
+
+/*
+ * half2: Two 16 bit floats
+ *
+ * Vector version of the half float type. Provides two half fields packed
+ * into a single 32 bit field with 32 bit alignment.
+ */
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+typedef half __attribute__((ext_vector_type(2))) half2;
+#endif
+
+/*
+ * half3: Three 16 bit floats
+ *
+ * Vector version of the half float type. Provides three half fields packed
+ * into a single 64 bit field with 64 bit alignment.
+ */
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+typedef half __attribute__((ext_vector_type(3))) half3;
+#endif
+
+/*
+ * half4: Four 16 bit floats
+ *
+ * Vector version of the half float type. Provides four half fields packed
+ * into a single 64 bit field with 64 bit alignment.
+ */
+#if (defined(RS_VERSION) && (RS_VERSION >= 23))
+typedef half __attribute__((ext_vector_type(4))) half4;
+#endif
+
+/*
  * int8_t: 8 bit signed integer
  *
  * 8 bit signed integer type.