| /// @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 |
| |