/* * Copyright 2011-2013 Blender Foundation * * 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. */ #include "stdcycles.h" shader node_brightness(color ColorIn = 0.8, float Bright = 0.0, float Contrast = 0.0, output color ColorOut = 0.8) { float a = 1.0 + Contrast; float b = Bright - Contrast * 0.5; ColorOut[0] = max(a * ColorIn[0] + b, 0.0); ColorOut[1] = max(a * ColorIn[1] + b, 0.0); ColorOut[2] = max(a * ColorIn[2] + b, 0.0); }