1 // Copyright (C) 2011 The Android Open Source Project 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #include "ip.rsh" 16 #pragma rs_fp_relaxed 17 18 uchar alpha = 0x0; 19 20 uchar4 RS_KERNEL setImageAlpha(uchar4 in, uint32_t x, uint32_t y) { 21 uchar4 out; 22 out.rgba = convert_uchar4((convert_uint4(in.rgba) * alpha) >> (uint4)8); 23 out.a = alpha; 24 return out; 25 } 26 27
