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58 lines
2.3 KiB
58 lines
2.3 KiB
/*
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* Copyright (c) 2014,2015 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <clc/clc.h>
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#include "../clcmacro.h"
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_CLC_OVERLOAD _CLC_DEF float smoothstep(float edge0, float edge1, float x) {
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float t = clamp((x - edge0) / (edge1 - edge0), 0.0f, 1.0f);
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return t * t * (3.0f - 2.0f * t);
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}
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_CLC_TERNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, float, smoothstep, float, float, float);
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_CLC_V_S_S_V_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, float, smoothstep, float, float, float);
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#ifdef cl_khr_fp64
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#pragma OPENCL EXTENSION cl_khr_fp64 : enable
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#define SMOOTH_STEP_DEF(edge_type, x_type, impl) \
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_CLC_OVERLOAD _CLC_DEF x_type smoothstep(edge_type edge0, edge_type edge1, x_type x) { \
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double t = clamp((x - edge0) / (edge1 - edge0), 0.0, 1.0); \
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return t * t * (3.0 - 2.0 * t); \
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}
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SMOOTH_STEP_DEF(double, double, SMOOTH_STEP_IMPL_D);
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_CLC_TERNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, double, smoothstep, double, double, double);
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#if !defined(CLC_SPIRV) && !defined(CLC_SPIRV64)
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SMOOTH_STEP_DEF(float, double, SMOOTH_STEP_IMPL_D);
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SMOOTH_STEP_DEF(double, float, SMOOTH_STEP_IMPL_D);
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_CLC_V_S_S_V_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, double, smoothstep, float, float, double);
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_CLC_V_S_S_V_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, float, smoothstep, double, double, float);
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#endif
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#endif
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