31 lines
794 B
Plaintext
31 lines
794 B
Plaintext
/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
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*
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* SPDX-License-Identifier: Apache-2.0 */
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#include "node_color.h"
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#include "node_math.h"
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#include "stdcycles.h"
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shader node_hsv(float Hue = 0.5,
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float Saturation = 1.0,
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float Value = 1.0,
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float Fac = 0.5,
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color ColorIn = 0.0,
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output color ColorOut = 0.0)
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{
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color Color = rgb_to_hsv(ColorIn);
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Color[0] = fract(Color[0] + Hue + 0.5);
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Color[1] = clamp(Color[1] * Saturation, 0.0, 1.0);
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Color[2] *= Value;
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Color = hsv_to_rgb(Color);
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// Clamp color to prevent negative values cauzed by oversaturation.
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Color[0] = max(Color[0], 0.0);
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Color[1] = max(Color[1], 0.0);
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Color[2] = max(Color[2], 0.0);
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ColorOut = mix(ColorIn, Color, Fac);
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}
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