diff options
Diffstat (limited to 'src/include/glm/detail/func_packing.inl')
| -rw-r--r-- | src/include/glm/detail/func_packing.inl | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/src/include/glm/detail/func_packing.inl b/src/include/glm/detail/func_packing.inl new file mode 100644 index 0000000..6d15054 --- /dev/null +++ b/src/include/glm/detail/func_packing.inl @@ -0,0 +1,189 @@ +/// @ref core
+/// @file glm/detail/func_packing.inl
+
+#include "../common.hpp"
+#include "type_half.hpp"
+
+namespace glm
+{
+ GLM_FUNC_QUALIFIER uint packUnorm2x16(vec2 const& v)
+ {
+ union
+ {
+ unsigned short in[2];
+ uint out;
+ } u;
+
+ vec<2, unsigned short, defaultp> 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;
+ unsigned short 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
+ {
+ signed short in[2];
+ uint out;
+ } u;
+
+ vec<2, short, defaultp> 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;
+ signed short 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
+ {
+ unsigned char in[4];
+ uint out;
+ } u;
+
+ vec<4, unsigned char, defaultp> 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;
+ unsigned char 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
+ {
+ signed char in[4];
+ uint out;
+ } u;
+
+ vec<4, signed char, defaultp> 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;
+ signed char 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
+ {
+ signed short 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;
+ signed short out[2];
+ } u;
+
+ u.in = v;
+
+ return vec2(
+ detail::toFloat32(u.out[0]),
+ detail::toFloat32(u.out[1]));
+ }
+}//namespace glm
+
+#if GLM_CONFIG_SIMD == GLM_ENABLE
+# include "func_packing_simd.inl"
+#endif
+
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