/// @ref core | |
/// @file glm/detail/func_packing.inl | |
#include "func_common.hpp" | |
#include "type_half.hpp" | |
#include "../fwd.hpp" | |
namespace glm | |
{ | |
GLM_FUNC_QUALIFIER uint packUnorm2x16(vec2 const & v) | |
{ | |
union | |
{ | |
u16 in[2]; | |
uint out; | |
} u; | |
u16vec2 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; | |
u16 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 | |
{ | |
i16 in[2]; | |
uint out; | |
} u; | |
i16vec2 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; | |
i16 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 | |
{ | |
u8 in[4]; | |
uint out; | |
} u; | |
u8vec4 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; | |
u8 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 | |
{ | |
i8 in[4]; | |
uint out; | |
} u; | |
i8vec4 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; | |
i8 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 | |
{ | |
i16 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; | |
i16 out[2]; | |
} u; | |
u.in = v; | |
return vec2( | |
detail::toFloat32(u.out[0]), | |
detail::toFloat32(u.out[1])); | |
} | |
}//namespace glm | |
#if GLM_ARCH != GLM_ARCH_PURE && GLM_HAS_UNRESTRICTED_UNIONS | |
# include "func_packing_simd.inl" | |
#endif | |