blend.rs revision 572a5031a5d8602db0bec0b253428a034bd4dd59 
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
17uchar alpha = 0x0;
18
19void setImageAlpha(uchar4 *v_out, uint32_t x, uint32_t y) {
20  v_out->rgba = convert_uchar4((convert_uint4(v_out->rgba) * alpha) >> (uint4)8);
21  v_out->a = alpha;
22}
23
24