1/*
2 * Copyright (C) 2012 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.image)
19#pragma rs_fp_relaxed
20
21
22static rs_matrix4x4 Mat;
23
24void init() {
25    rsMatrixLoadIdentity(&Mat);
26}
27
28void setMatrix(rs_matrix4x4 m) {
29    Mat = m;
30}
31
32uchar4 __attribute__((kernel)) root(uchar4 in) {
33    float4 f = convert_float4(in);
34    f = rsMatrixMultiply(&Mat, f);
35    f = clamp(f, 0.f, 255.f);
36    return convert_uchar4(f);
37}
38
39