diff options
Diffstat (limited to 'intern/cycles/kernel/osl/shaders/node_hsv.osl')
-rw-r--r-- | intern/cycles/kernel/osl/shaders/node_hsv.osl | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/intern/cycles/kernel/osl/shaders/node_hsv.osl b/intern/cycles/kernel/osl/shaders/node_hsv.osl new file mode 100644 index 00000000000..4417057b10f --- /dev/null +++ b/intern/cycles/kernel/osl/shaders/node_hsv.osl @@ -0,0 +1,42 @@ +/* + * 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 "node_color.h" +#include "stdcycles.h" + +shader node_hsv(float Hue = 0.5, + float Saturation = 1.0, + float Value = 1.0, + float Fac = 0.5, + color ColorIn = 0.0, + output color ColorOut = 0.0) +{ + color Color = rgb_to_hsv(ColorIn); + + // remember: fmod doesn't work for negative numbers + Color[0] = fmod(Color[0] + Hue + 0.5, 1.0); + Color[1] = clamp(Color[1] * Saturation, 0.0, 1.0); + Color[2] *= Value; + + Color = hsv_to_rgb(Color); + + // Clamp color to prevent negative values cauzed by oversaturation. + Color[0] = max(Color[0], 0.0); + Color[1] = max(Color[1], 0.0); + Color[2] = max(Color[2], 0.0); + + ColorOut = mix(ColorIn, Color, Fac); +} |