// Sample script for RGB888 support (compare to saturationARGB.rs) /* * Copyright (C) 2014 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 version(1) #pragma rs java_package_name(com.android.rs.cppbasic) #pragma rs_fp_relaxed const static float3 gMonoMult = {0.299f, 0.587f, 0.114f}; // global variables (parameters accessible to application code) float gSaturation = 1.0f; void root(const uchar3 *v_in, uchar3 *v_out) { // scale 0-255 uchar to 0-1.0 float float3 in = {v_in->r * 0.003921569f, v_in->g * 0.003921569f, v_in->b * 0.003921569f}; // apply saturation filter float3 result = dot(in, gMonoMult); result = mix(result, in, gSaturation); // convert to uchar, copied from rsPackColorTo8888 v_out->x = (uchar)clamp((result.r * 255.f + 0.5f), 0.f, 255.f); v_out->y = (uchar)clamp((result.g * 255.f + 0.5f), 0.f, 255.f); v_out->z = (uchar)clamp((result.b * 255.f + 0.5f), 0.f, 255.f); }