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
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/*
Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
found in the LICENSE.txt file.
*/
/* The following files are direct copies of each other:
*
* GL/acos/acos_vec3_frag_xvary_ref.frag
* GL/asin/asin_vec3_frag_xvary_ref.frag
*
* Care should be taken to apply any changes to both. Only the last
* line where gl_FragColor is assigned should be different.
*/
#ifdef GL_ES
precision mediump float;
#endif
varying vec4 color;
float lerp(float a, float b, float s)
{
return a + (b - a) * s;
}
void main (void)
{
float asinValues[17];
asinValues[0] = -1.5708;
asinValues[1] = -1.06544;
asinValues[2] = -0.848062;
asinValues[3] = -0.675132;
asinValues[4] = -0.523599;
asinValues[5] = -0.384397;
asinValues[6] = -0.25268;
asinValues[7] = -0.125328;
asinValues[8] = 0.0;
asinValues[9] = 0.125328;
asinValues[10] = 0.25268;
asinValues[11] = 0.384397;
asinValues[12] = 0.523599;
asinValues[13] = 0.675132;
asinValues[14] = 0.848062;
asinValues[15] = 1.06544;
asinValues[16] = 1.5708;
const float M_PI = 3.14159265358979323846;
vec3 c = 2.0 * (color.rgb - 0.5);
vec3 arrVal = (c + vec3(1.0, 1.0, 1.0)) * 8.0;
int arr0x = int(floor(arrVal.x));
int arr0y = int(floor(arrVal.y));
int arr0z = int(floor(arrVal.z));
vec3 weight = arrVal - floor(arrVal);
vec3 asin_c = vec3(0.0);
if (arr0x == 0)
asin_c.x = lerp(asinValues[0], asinValues[1], weight.x);
else if (arr0x == 1)
asin_c.x = lerp(asinValues[1], asinValues[2], weight.x);
else if (arr0x == 2)
asin_c.x = lerp(asinValues[2], asinValues[3], weight.x);
else if (arr0x == 3)
asin_c.x = lerp(asinValues[3], asinValues[4], weight.x);
else if (arr0x == 4)
asin_c.x = lerp(asinValues[4], asinValues[5], weight.x);
else if (arr0x == 5)
asin_c.x = lerp(asinValues[5], asinValues[6], weight.x);
else if (arr0x == 6)
asin_c.x = lerp(asinValues[6], asinValues[7], weight.x);
else if (arr0x == 7)
asin_c.x = lerp(asinValues[7], asinValues[8], weight.x);
else if (arr0x == 8)
asin_c.x = lerp(asinValues[8], asinValues[9], weight.x);
else if (arr0x == 9)
asin_c.x = lerp(asinValues[9], asinValues[10], weight.x);
else if (arr0x == 10)
asin_c.x = lerp(asinValues[10], asinValues[11], weight.x);
else if (arr0x == 11)
asin_c.x = lerp(asinValues[11], asinValues[12], weight.x);
else if (arr0x == 12)
asin_c.x = lerp(asinValues[12], asinValues[13], weight.x);
else if (arr0x == 13)
asin_c.x = lerp(asinValues[13], asinValues[14], weight.x);
else if (arr0x == 14)
asin_c.x = lerp(asinValues[14], asinValues[15], weight.x);
else if (arr0x == 15)
asin_c.x = lerp(asinValues[15], asinValues[16], weight.x);
else if (arr0x == 16)
asin_c.x = asinValues[16];
if (arr0y == 0)
asin_c.y = lerp(asinValues[0], asinValues[1], weight.y);
else if (arr0y == 1)
asin_c.y = lerp(asinValues[1], asinValues[2], weight.y);
else if (arr0y == 2)
asin_c.y = lerp(asinValues[2], asinValues[3], weight.y);
else if (arr0y == 3)
asin_c.y = lerp(asinValues[3], asinValues[4], weight.y);
else if (arr0y == 4)
asin_c.y = lerp(asinValues[4], asinValues[5], weight.y);
else if (arr0y == 5)
asin_c.y = lerp(asinValues[5], asinValues[6], weight.y);
else if (arr0y == 6)
asin_c.y = lerp(asinValues[6], asinValues[7], weight.y);
else if (arr0y == 7)
asin_c.y = lerp(asinValues[7], asinValues[8], weight.y);
else if (arr0y == 8)
asin_c.y = lerp(asinValues[8], asinValues[9], weight.y);
else if (arr0y == 9)
asin_c.y = lerp(asinValues[9], asinValues[10], weight.y);
else if (arr0y == 10)
asin_c.y = lerp(asinValues[10], asinValues[11], weight.y);
else if (arr0y == 11)
asin_c.y = lerp(asinValues[11], asinValues[12], weight.y);
else if (arr0y == 12)
asin_c.y = lerp(asinValues[12], asinValues[13], weight.y);
else if (arr0y == 13)
asin_c.y = lerp(asinValues[13], asinValues[14], weight.y);
else if (arr0y == 14)
asin_c.y = lerp(asinValues[14], asinValues[15], weight.y);
else if (arr0y == 15)
asin_c.y = lerp(asinValues[15], asinValues[16], weight.y);
else if (arr0y == 16)
asin_c.y = asinValues[16];
if (arr0z == 0)
asin_c.z = lerp(asinValues[0], asinValues[1], weight.z);
else if (arr0z == 1)
asin_c.z = lerp(asinValues[1], asinValues[2], weight.z);
else if (arr0z == 2)
asin_c.z = lerp(asinValues[2], asinValues[3], weight.z);
else if (arr0z == 3)
asin_c.z = lerp(asinValues[3], asinValues[4], weight.z);
else if (arr0z == 4)
asin_c.z = lerp(asinValues[4], asinValues[5], weight.z);
else if (arr0z == 5)
asin_c.z = lerp(asinValues[5], asinValues[6], weight.z);
else if (arr0z == 6)
asin_c.z = lerp(asinValues[6], asinValues[7], weight.z);
else if (arr0z == 7)
asin_c.z = lerp(asinValues[7], asinValues[8], weight.z);
else if (arr0z == 8)
asin_c.z = lerp(asinValues[8], asinValues[9], weight.z);
else if (arr0z == 9)
asin_c.z = lerp(asinValues[9], asinValues[10], weight.z);
else if (arr0z == 10)
asin_c.z = lerp(asinValues[10], asinValues[11], weight.z);
else if (arr0z == 11)
asin_c.z = lerp(asinValues[11], asinValues[12], weight.z);
else if (arr0z == 12)
asin_c.z = lerp(asinValues[12], asinValues[13], weight.z);
else if (arr0z == 13)
asin_c.z = lerp(asinValues[13], asinValues[14], weight.z);
else if (arr0z == 14)
asin_c.z = lerp(asinValues[14], asinValues[15], weight.z);
else if (arr0z == 15)
asin_c.z = lerp(asinValues[15], asinValues[16], weight.z);
else if (arr0z == 16)
asin_c.z = asinValues[16];
gl_FragColor = vec4(asin_c / M_PI + 0.5, 1.0);
}
|
