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 18uchar alpha = 0x0; 19 20uchar4 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