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lib/glm/detail/func_packing.inl

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+/// @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
+