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Updated GLM version w/ now standard radians as angles.
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includes/glm/detail/func_packing.inl
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includes/glm/detail/func_packing.inl
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///////////////////////////////////////////////////////////////////////////////////
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/// OpenGL Mathematics (glm.g-truc.net)
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///
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/// Copyright (c) 2005 - 2015 G-Truc Creation (www.g-truc.net)
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/// Permission is hereby granted, free of charge, to any person obtaining a copy
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/// of this software and associated documentation files (the "Software"), to deal
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/// in the Software without restriction, including without limitation the rights
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/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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/// copies of the Software, and to permit persons to whom the Software is
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/// furnished to do so, subject to the following conditions:
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///
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/// The above copyright notice and this permission notice shall be included in
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/// all copies or substantial portions of the Software.
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///
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/// Restrictions:
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/// By making use of the Software for military purposes, you choose to make
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/// a Bunny unhappy.
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///
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/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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/// THE SOFTWARE.
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///
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/// @ref core
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/// @file glm/detail/func_packing.inl
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/// @date 2010-03-17 / 2011-06-15
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/// @author Christophe Riccio
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///////////////////////////////////////////////////////////////////////////////////
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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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