190 lines
2.9 KiB
C++
190 lines
2.9 KiB
C++
/// @ref core
|
|
/// @file glm/detail/func_packing.inl
|
|
|
|
#include "../common.hpp"
|
|
#include "type_half.hpp"
|
|
#include "../fwd.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
|
|
|