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
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
/*
** Copyright (c) 2012 The Khronos Group Inc.
**
** Permission is hereby granted, free of charge, to any person obtaining a
** copy of this software and/or associated documentation files (the
** "Materials"), to deal in the Materials without restriction, including
** without limitation the rights to use, copy, modify, merge, publish,
** distribute, sublicense, and/or sell copies of the Materials, and to
** permit persons to whom the Materials are 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 Materials.
**
** THE MATERIALS ARE 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
** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
*/
/* 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);
}
|
