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
183
184
185
186
187
188
189
|
/// @ref core
/// @file glm/detail/func_packing.inl
#include "../common.hpp"
#include "type_half.hpp"
namespace glm
{
GLM_FUNC_QUALIFIER uint packUnorm2x16(vec2 const& v)
{
union
{
unsigned short in[2];
uint out;
} u;
vec<2, unsigned short, defaultp> result(round(clamp(v, 0.0f, 1.0f) * 65535.0f));
u.in[0] = result[0];
u.in[1] = result[1];
return u.out;
}
GLM_FUNC_QUALIFIER vec2 unpackUnorm2x16(uint p)
{
union
{
uint in;
unsigned short out[2];
} u;
u.in = p;
return vec2(u.out[0], u.out[1]) * 1.5259021896696421759365224689097e-5f;
}
GLM_FUNC_QUALIFIER uint packSnorm2x16(vec2 const& v)
{
union
{
signed short in[2];
uint out;
} u;
vec<2, short, defaultp> result(round(clamp(v, -1.0f, 1.0f) * 32767.0f));
u.in[0] = result[0];
u.in[1] = result[1];
return u.out;
}
GLM_FUNC_QUALIFIER vec2 unpackSnorm2x16(uint p)
{
union
{
uint in;
signed short out[2];
} u;
u.in = p;
return clamp(vec2(u.out[0], u.out[1]) * 3.0518509475997192297128208258309e-5f, -1.0f, 1.0f);
}
GLM_FUNC_QUALIFIER uint packUnorm4x8(vec4 const& v)
{
union
{
unsigned char in[4];
uint out;
} u;
vec<4, unsigned char, defaultp> result(round(clamp(v, 0.0f, 1.0f) * 255.0f));
u.in[0] = result[0];
u.in[1] = result[1];
u.in[2] = result[2];
u.in[3] = result[3];
return u.out;
}
GLM_FUNC_QUALIFIER vec4 unpackUnorm4x8(uint p)
{
union
{
uint in;
unsigned char out[4];
} u;
u.in = p;
return vec4(u.out[0], u.out[1], u.out[2], u.out[3]) * 0.0039215686274509803921568627451f;
}
GLM_FUNC_QUALIFIER uint packSnorm4x8(vec4 const& v)
{
union
{
signed char in[4];
uint out;
} u;
vec<4, signed char, defaultp> result(round(clamp(v, -1.0f, 1.0f) * 127.0f));
u.in[0] = result[0];
u.in[1] = result[1];
u.in[2] = result[2];
u.in[3] = result[3];
return u.out;
}
GLM_FUNC_QUALIFIER glm::vec4 unpackSnorm4x8(uint p)
{
union
{
uint in;
signed char out[4];
} u;
u.in = p;
return clamp(vec4(u.out[0], u.out[1], u.out[2], u.out[3]) * 0.0078740157480315f, -1.0f, 1.0f);
}
GLM_FUNC_QUALIFIER double packDouble2x32(uvec2 const& v)
{
union
{
uint in[2];
double out;
} u;
u.in[0] = v[0];
u.in[1] = v[1];
return u.out;
}
GLM_FUNC_QUALIFIER uvec2 unpackDouble2x32(double v)
{
union
{
double in;
uint out[2];
} u;
u.in = v;
return uvec2(u.out[0], u.out[1]);
}
GLM_FUNC_QUALIFIER uint packHalf2x16(vec2 const& v)
{
union
{
signed short in[2];
uint out;
} u;
u.in[0] = detail::toFloat16(v.x);
u.in[1] = detail::toFloat16(v.y);
return u.out;
}
GLM_FUNC_QUALIFIER vec2 unpackHalf2x16(uint v)
{
union
{
uint in;
signed short out[2];
} u;
u.in = v;
return vec2(
detail::toFloat32(u.out[0]),
detail::toFloat32(u.out[1]));
}
}//namespace glm
#if GLM_CONFIG_SIMD == GLM_ENABLE
# include "func_packing_simd.inl"
#endif
|
