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authorNikolas <nikolas@boutalas.com>2024-10-27 12:52:55 +0200
committerNikolas <nikolas@boutalas.com>2024-10-27 12:52:55 +0200
commit43394c8a8908442982e3a7e25975c31b3c952923 (patch)
tree2facd563e29f48fe3b0653ac5c113998940b4d5e /3rdparty/include/glm/detail/func_packing.inl
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+///////////////////////////////////////////////////////////////////////////////////
+/// OpenGL Mathematics (glm.g-truc.net)
+///
+/// Copyright (c) 2005 - 2015 G-Truc Creation (www.g-truc.net)
+/// Permission is hereby granted, free of charge, to any person obtaining a copy
+/// of this software and associated documentation files (the "Software"), to deal
+/// in the Software without restriction, including without limitation the rights
+/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+/// copies of the Software, and to permit persons to whom the Software is
+/// furnished to do so, subject to the following conditions:
+///
+/// The above copyright notice and this permission notice shall be included in
+/// all copies or substantial portions of the Software.
+///
+/// Restrictions:
+/// By making use of the Software for military purposes, you choose to make
+/// a Bunny unhappy.
+///
+/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+/// THE SOFTWARE.
+///
+/// @ref core
+/// @file glm/detail/func_packing.inl
+/// @date 2010-03-17 / 2011-06-15
+/// @author Christophe Riccio
+///////////////////////////////////////////////////////////////////////////////////
+
+#include "func_common.hpp"
+#include "type_half.hpp"
+#include "../fwd.hpp"
+
+namespace glm
+{
+ GLM_FUNC_QUALIFIER uint packUnorm2x16(vec2 const & v)
+ {
+ u16vec2 const Topack(round(clamp(v, 0.0f, 1.0f) * 65535.0f));
+ return reinterpret_cast<uint const &>(Topack);
+ }
+
+ GLM_FUNC_QUALIFIER vec2 unpackUnorm2x16(uint p)
+ {
+ vec2 Unpack(reinterpret_cast<u16vec2 const &>(p));
+ return Unpack * float(1.5259021896696421759365224689097e-5); // 1.0 / 65535.0
+ }
+
+ GLM_FUNC_QUALIFIER uint packSnorm2x16(vec2 const & v)
+ {
+ i16vec2 const Topack(round(clamp(v ,-1.0f, 1.0f) * 32767.0f));
+ return reinterpret_cast<uint const &>(Topack);
+ }
+
+ GLM_FUNC_QUALIFIER vec2 unpackSnorm2x16(uint p)
+ {
+ vec2 const Unpack(reinterpret_cast<i16vec2 const &>(p));
+ return clamp(
+ Unpack * 3.0518509475997192297128208258309e-5f, //1.0f / 32767.0f,
+ -1.0f, 1.0f);
+ }
+
+ GLM_FUNC_QUALIFIER uint packUnorm4x8(vec4 const & v)
+ {
+ u8vec4 const Topack(round(clamp(v, 0.0f, 1.0f) * 255.0f));
+ return reinterpret_cast<uint const &>(Topack);
+ }
+
+ GLM_FUNC_QUALIFIER vec4 unpackUnorm4x8(uint p)
+ {
+ vec4 const Unpack(reinterpret_cast<u8vec4 const&>(p));
+ return Unpack * float(0.0039215686274509803921568627451); // 1 / 255
+ }
+
+ GLM_FUNC_QUALIFIER uint packSnorm4x8(vec4 const & v)
+ {
+ i8vec4 const Topack(round(clamp(v ,-1.0f, 1.0f) * 127.0f));
+ return reinterpret_cast<uint const &>(Topack);
+ }
+
+ GLM_FUNC_QUALIFIER glm::vec4 unpackSnorm4x8(uint p)
+ {
+ vec4 const Unpack(reinterpret_cast<i8vec4 const &>(p));
+ return clamp(
+ Unpack * 0.0078740157480315f, // 1.0f / 127.0f
+ -1.0f, 1.0f);
+ }
+
+ GLM_FUNC_QUALIFIER double packDouble2x32(uvec2 const & v)
+ {
+ return reinterpret_cast<double const &>(v);
+ }
+
+ GLM_FUNC_QUALIFIER uvec2 unpackDouble2x32(double v)
+ {
+ return reinterpret_cast<uvec2 const &>(v);
+ }
+
+ GLM_FUNC_QUALIFIER uint packHalf2x16(vec2 const & v)
+ {
+ i16vec2 const Unpack(
+ detail::toFloat16(v.x),
+ detail::toFloat16(v.y));
+
+ return reinterpret_cast<uint const &>(Unpack);
+ }
+
+ GLM_FUNC_QUALIFIER vec2 unpackHalf2x16(uint v)
+ {
+ i16vec2 const Unpack(reinterpret_cast<i16vec2 const &>(v));
+
+ return vec2(
+ detail::toFloat32(Unpack.x),
+ detail::toFloat32(Unpack.y));
+ }
+}//namespace glm
+