smoothstep.cl
2.24 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
/*
* Copyright (c) 2014,2015 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <clc/clc.h>
#include "../clcmacro.h"
_CLC_OVERLOAD _CLC_DEF float smoothstep(float edge0, float edge1, float x) {
float t = clamp((x - edge0) / (edge1 - edge0), 0.0f, 1.0f);
return t * t * (3.0f - 2.0f * t);
}
_CLC_TERNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, float, smoothstep, float, float, float);
_CLC_V_S_S_V_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, float, smoothstep, float, float, float);
#ifdef cl_khr_fp64
#pragma OPENCL EXTENSION cl_khr_fp64 : enable
#define SMOOTH_STEP_DEF(edge_type, x_type, impl) \
_CLC_OVERLOAD _CLC_DEF x_type smoothstep(edge_type edge0, edge_type edge1, x_type x) { \
double t = clamp((x - edge0) / (edge1 - edge0), 0.0, 1.0); \
return t * t * (3.0 - 2.0 * t); \
}
SMOOTH_STEP_DEF(double, double, SMOOTH_STEP_IMPL_D);
_CLC_TERNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, double, smoothstep, double, double, double);
SMOOTH_STEP_DEF(float, double, SMOOTH_STEP_IMPL_D);
SMOOTH_STEP_DEF(double, float, SMOOTH_STEP_IMPL_D);
_CLC_V_S_S_V_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, double, smoothstep, float, float, double);
_CLC_V_S_S_V_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, float, smoothstep, double, double, float);
#endif