1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma version(1) 18 #pragma rs java_package_name(com.android.rs.jniallocations) 19 20 // Kernel performs basic vector swizzle 21 uchar4 __attribute__((kernel)) swizzle_kernel(uchar4 in) 22 { 23 return in.wzyx; 24 } 25 26 // Kernel squares every element in allocation 27 uint __attribute__((kernel)) square_kernel(ushort in) 28 { 29 uint result = (uint)(in) * (uint)in; 30 return result; 31 } 32 33 // Helper function adding 1/2 to passed in double 34 static double half_helper(double in) 35 { 36 return (in + 0.5); 37 } 38 39 // Kernel returns first 3 elements of a double4 plus 1/2 40 double3 __attribute__((kernel)) add_half_kernel(double4 in) 41 { 42 double3 result; 43 result.x = half_helper(in.x); 44 result.y = half_helper(in.y); 45 result.z = half_helper(in.z); 46 return result; 47 } 48
