| * Copyright (C) 2012 The Android Open Source Project |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| #pragma rs java_package_name(com.android.rs.image) |
| const static float3 gMonoMult = {0.299f, 0.587f, 0.114f}; |
| void root(const uchar4 *v_in, uchar4 *v_out) { |
| float4 f4 = rsUnpackColor8888(*v_in); |
| float3 mono = dot(f4.rgb, gMonoMult); |
| *v_out = rsPackColorTo8888(mono); |