191 lines
2.8 KiB
C++
191 lines
2.8 KiB
C++
/// @ref core
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/// @file glm/detail/func_packing.inl
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#include "func_common.hpp"
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#include "type_half.hpp"
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#include "../fwd.hpp"
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namespace glm
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{
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GLM_FUNC_QUALIFIER uint packUnorm2x16(vec2 const & v)
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{
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union
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{
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u16 in[2];
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uint out;
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} u;
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u16vec2 result(round(clamp(v, 0.0f, 1.0f) * 65535.0f));
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u.in[0] = result[0];
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u.in[1] = result[1];
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return u.out;
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}
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GLM_FUNC_QUALIFIER vec2 unpackUnorm2x16(uint p)
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{
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union
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{
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uint in;
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u16 out[2];
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} u;
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u.in = p;
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return vec2(u.out[0], u.out[1]) * 1.5259021896696421759365224689097e-5f;
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}
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GLM_FUNC_QUALIFIER uint packSnorm2x16(vec2 const & v)
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{
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union
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{
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i16 in[2];
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uint out;
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} u;
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i16vec2 result(round(clamp(v, -1.0f, 1.0f) * 32767.0f));
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u.in[0] = result[0];
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u.in[1] = result[1];
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return u.out;
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}
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GLM_FUNC_QUALIFIER vec2 unpackSnorm2x16(uint p)
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{
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union
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{
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uint in;
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i16 out[2];
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} u;
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u.in = p;
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return clamp(vec2(u.out[0], u.out[1]) * 3.0518509475997192297128208258309e-5f, -1.0f, 1.0f);
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}
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GLM_FUNC_QUALIFIER uint packUnorm4x8(vec4 const & v)
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{
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union
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{
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u8 in[4];
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uint out;
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} u;
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u8vec4 result(round(clamp(v, 0.0f, 1.0f) * 255.0f));
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u.in[0] = result[0];
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u.in[1] = result[1];
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u.in[2] = result[2];
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u.in[3] = result[3];
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return u.out;
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}
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GLM_FUNC_QUALIFIER vec4 unpackUnorm4x8(uint p)
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{
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union
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{
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uint in;
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u8 out[4];
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} u;
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u.in = p;
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return vec4(u.out[0], u.out[1], u.out[2], u.out[3]) * 0.0039215686274509803921568627451f;
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}
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GLM_FUNC_QUALIFIER uint packSnorm4x8(vec4 const & v)
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{
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union
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{
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i8 in[4];
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uint out;
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} u;
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i8vec4 result(round(clamp(v, -1.0f, 1.0f) * 127.0f));
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u.in[0] = result[0];
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u.in[1] = result[1];
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u.in[2] = result[2];
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u.in[3] = result[3];
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return u.out;
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}
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GLM_FUNC_QUALIFIER glm::vec4 unpackSnorm4x8(uint p)
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{
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union
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{
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uint in;
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i8 out[4];
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} u;
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u.in = p;
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return clamp(vec4(u.out[0], u.out[1], u.out[2], u.out[3]) * 0.0078740157480315f, -1.0f, 1.0f);
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}
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GLM_FUNC_QUALIFIER double packDouble2x32(uvec2 const & v)
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{
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union
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{
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uint in[2];
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double out;
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} u;
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u.in[0] = v[0];
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u.in[1] = v[1];
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return u.out;
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}
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GLM_FUNC_QUALIFIER uvec2 unpackDouble2x32(double v)
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{
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union
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{
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double in;
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uint out[2];
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} u;
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u.in = v;
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return uvec2(u.out[0], u.out[1]);
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}
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GLM_FUNC_QUALIFIER uint packHalf2x16(vec2 const & v)
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{
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union
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{
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i16 in[2];
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uint out;
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} u;
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u.in[0] = detail::toFloat16(v.x);
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u.in[1] = detail::toFloat16(v.y);
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return u.out;
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}
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GLM_FUNC_QUALIFIER vec2 unpackHalf2x16(uint v)
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{
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union
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{
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uint in;
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i16 out[2];
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} u;
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u.in = v;
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return vec2(
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detail::toFloat32(u.out[0]),
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detail::toFloat32(u.out[1]));
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}
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}//namespace glm
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#if GLM_ARCH != GLM_ARCH_PURE && GLM_HAS_UNRESTRICTED_UNIONS
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# include "func_packing_simd.inl"
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#endif
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