diff options
Diffstat (limited to 'depedencies/include/glm/gtc/packing.inl')
-rw-r--r-- | depedencies/include/glm/gtc/packing.inl | 781 |
1 files changed, 0 insertions, 781 deletions
diff --git a/depedencies/include/glm/gtc/packing.inl b/depedencies/include/glm/gtc/packing.inl deleted file mode 100644 index 618fb9e..0000000 --- a/depedencies/include/glm/gtc/packing.inl +++ /dev/null @@ -1,781 +0,0 @@ -/// @ref gtc_packing -/// @file glm/gtc/packing.inl - -#include "../common.hpp" -#include "../vec2.hpp" -#include "../vec3.hpp" -#include "../vec4.hpp" -#include "../detail/type_half.hpp" -#include <cstring> -#include <limits> - -namespace glm{ -namespace detail -{ - GLM_FUNC_QUALIFIER glm::uint16 float2half(glm::uint32 f) - { - // 10 bits => EE EEEFFFFF - // 11 bits => EEE EEFFFFFF - // Half bits => SEEEEEFF FFFFFFFF - // Float bits => SEEEEEEE EFFFFFFF FFFFFFFF FFFFFFFF - - // 0x00007c00 => 00000000 00000000 01111100 00000000 - // 0x000003ff => 00000000 00000000 00000011 11111111 - // 0x38000000 => 00111000 00000000 00000000 00000000 - // 0x7f800000 => 01111111 10000000 00000000 00000000 - // 0x00008000 => 00000000 00000000 10000000 00000000 - return - ((f >> 16) & 0x8000) | // sign - ((((f & 0x7f800000) - 0x38000000) >> 13) & 0x7c00) | // exponential - ((f >> 13) & 0x03ff); // Mantissa - } - - GLM_FUNC_QUALIFIER glm::uint32 float2packed11(glm::uint32 f) - { - // 10 bits => EE EEEFFFFF - // 11 bits => EEE EEFFFFFF - // Half bits => SEEEEEFF FFFFFFFF - // Float bits => SEEEEEEE EFFFFFFF FFFFFFFF FFFFFFFF - - // 0x000007c0 => 00000000 00000000 00000111 11000000 - // 0x00007c00 => 00000000 00000000 01111100 00000000 - // 0x000003ff => 00000000 00000000 00000011 11111111 - // 0x38000000 => 00111000 00000000 00000000 00000000 - // 0x7f800000 => 01111111 10000000 00000000 00000000 - // 0x00008000 => 00000000 00000000 10000000 00000000 - return - ((((f & 0x7f800000) - 0x38000000) >> 17) & 0x07c0) | // exponential - ((f >> 17) & 0x003f); // Mantissa - } - - GLM_FUNC_QUALIFIER glm::uint32 packed11ToFloat(glm::uint32 p) - { - // 10 bits => EE EEEFFFFF - // 11 bits => EEE EEFFFFFF - // Half bits => SEEEEEFF FFFFFFFF - // Float bits => SEEEEEEE EFFFFFFF FFFFFFFF FFFFFFFF - - // 0x000007c0 => 00000000 00000000 00000111 11000000 - // 0x00007c00 => 00000000 00000000 01111100 00000000 - // 0x000003ff => 00000000 00000000 00000011 11111111 - // 0x38000000 => 00111000 00000000 00000000 00000000 - // 0x7f800000 => 01111111 10000000 00000000 00000000 - // 0x00008000 => 00000000 00000000 10000000 00000000 - return - ((((p & 0x07c0) << 17) + 0x38000000) & 0x7f800000) | // exponential - ((p & 0x003f) << 17); // Mantissa - } - - GLM_FUNC_QUALIFIER glm::uint32 float2packed10(glm::uint32 f) - { - // 10 bits => EE EEEFFFFF - // 11 bits => EEE EEFFFFFF - // Half bits => SEEEEEFF FFFFFFFF - // Float bits => SEEEEEEE EFFFFFFF FFFFFFFF FFFFFFFF - - // 0x0000001F => 00000000 00000000 00000000 00011111 - // 0x0000003F => 00000000 00000000 00000000 00111111 - // 0x000003E0 => 00000000 00000000 00000011 11100000 - // 0x000007C0 => 00000000 00000000 00000111 11000000 - // 0x00007C00 => 00000000 00000000 01111100 00000000 - // 0x000003FF => 00000000 00000000 00000011 11111111 - // 0x38000000 => 00111000 00000000 00000000 00000000 - // 0x7f800000 => 01111111 10000000 00000000 00000000 - // 0x00008000 => 00000000 00000000 10000000 00000000 - return - ((((f & 0x7f800000) - 0x38000000) >> 18) & 0x03E0) | // exponential - ((f >> 18) & 0x001f); // Mantissa - } - - GLM_FUNC_QUALIFIER glm::uint32 packed10ToFloat(glm::uint32 p) - { - // 10 bits => EE EEEFFFFF - // 11 bits => EEE EEFFFFFF - // Half bits => SEEEEEFF FFFFFFFF - // Float bits => SEEEEEEE EFFFFFFF FFFFFFFF FFFFFFFF - - // 0x0000001F => 00000000 00000000 00000000 00011111 - // 0x0000003F => 00000000 00000000 00000000 00111111 - // 0x000003E0 => 00000000 00000000 00000011 11100000 - // 0x000007C0 => 00000000 00000000 00000111 11000000 - // 0x00007C00 => 00000000 00000000 01111100 00000000 - // 0x000003FF => 00000000 00000000 00000011 11111111 - // 0x38000000 => 00111000 00000000 00000000 00000000 - // 0x7f800000 => 01111111 10000000 00000000 00000000 - // 0x00008000 => 00000000 00000000 10000000 00000000 - return - ((((p & 0x03E0) << 18) + 0x38000000) & 0x7f800000) | // exponential - ((p & 0x001f) << 18); // Mantissa - } - - GLM_FUNC_QUALIFIER glm::uint half2float(glm::uint h) - { - return ((h & 0x8000) << 16) | ((( h & 0x7c00) + 0x1C000) << 13) | ((h & 0x03FF) << 13); - } - - GLM_FUNC_QUALIFIER glm::uint floatTo11bit(float x) - { - if(x == 0.0f) - return 0u; - else if(glm::isnan(x)) - return ~0u; - else if(glm::isinf(x)) - return 0x1Fu << 6u; - - uint Pack = 0u; - memcpy(&Pack, &x, sizeof(Pack)); - return float2packed11(Pack); - } - - GLM_FUNC_QUALIFIER float packed11bitToFloat(glm::uint x) - { - if(x == 0) - return 0.0f; - else if(x == ((1 << 11) - 1)) - return ~0;//NaN - else if(x == (0x1f << 6)) - return ~0;//Inf - - uint Result = packed11ToFloat(x); - - float Temp = 0; - memcpy(&Temp, &Result, sizeof(Temp)); - return Temp; - } - - GLM_FUNC_QUALIFIER glm::uint floatTo10bit(float x) - { - if(x == 0.0f) - return 0u; - else if(glm::isnan(x)) - return ~0u; - else if(glm::isinf(x)) - return 0x1Fu << 5u; - - uint Pack = 0; - memcpy(&Pack, &x, sizeof(Pack)); - return float2packed10(Pack); - } - - GLM_FUNC_QUALIFIER float packed10bitToFloat(glm::uint x) - { - if(x == 0) - return 0.0f; - else if(x == ((1 << 10) - 1)) - return ~0;//NaN - else if(x == (0x1f << 5)) - return ~0;//Inf - - uint Result = packed10ToFloat(x); - - float Temp = 0; - memcpy(&Temp, &Result, sizeof(Temp)); - return Temp; - } - -// GLM_FUNC_QUALIFIER glm::uint f11_f11_f10(float x, float y, float z) -// { -// return ((floatTo11bit(x) & ((1 << 11) - 1)) << 0) | ((floatTo11bit(y) & ((1 << 11) - 1)) << 11) | ((floatTo10bit(z) & ((1 << 10) - 1)) << 22); -// } - - union u3u3u2 - { - struct - { - uint x : 3; - uint y : 3; - uint z : 2; - } data; - uint8 pack; - }; - - union u4u4 - { - struct - { - uint x : 4; - uint y : 4; - } data; - uint8 pack; - }; - - union u4u4u4u4 - { - struct - { - uint x : 4; - uint y : 4; - uint z : 4; - uint w : 4; - } data; - uint16 pack; - }; - - union u5u6u5 - { - struct - { - uint x : 5; - uint y : 6; - uint z : 5; - } data; - uint16 pack; - }; - - union u5u5u5u1 - { - struct - { - uint x : 5; - uint y : 5; - uint z : 5; - uint w : 1; - } data; - uint16 pack; - }; - - union u10u10u10u2 - { - struct - { - uint x : 10; - uint y : 10; - uint z : 10; - uint w : 2; - } data; - uint32 pack; - }; - - union i10i10i10i2 - { - struct - { - int x : 10; - int y : 10; - int z : 10; - int w : 2; - } data; - uint32 pack; - }; - - union u9u9u9e5 - { - struct - { - uint x : 9; - uint y : 9; - uint z : 9; - uint w : 5; - } data; - uint32 pack; - }; - - template <precision P, template <typename, precision> class vecType> - struct compute_half - {}; - - template <precision P> - struct compute_half<P, tvec1> - { - GLM_FUNC_QUALIFIER static tvec1<uint16, P> pack(tvec1<float, P> const & v) - { - int16 const Unpack(detail::toFloat16(v.x)); - u16vec1 Packed(uninitialize); - memcpy(&Packed, &Unpack, sizeof(Packed)); - return Packed; - } - - GLM_FUNC_QUALIFIER static tvec1<float, P> unpack(tvec1<uint16, P> const & v) - { - i16vec1 Unpack(uninitialize); - memcpy(&Unpack, &v, sizeof(Unpack)); - return tvec1<float, P>(detail::toFloat32(v.x)); - } - }; - - template <precision P> - struct compute_half<P, tvec2> - { - GLM_FUNC_QUALIFIER static tvec2<uint16, P> pack(tvec2<float, P> const & v) - { - tvec2<int16, P> const Unpack(detail::toFloat16(v.x), detail::toFloat16(v.y)); - u16vec2 Packed(uninitialize); - memcpy(&Packed, &Unpack, sizeof(Packed)); - return Packed; - } - - GLM_FUNC_QUALIFIER static tvec2<float, P> unpack(tvec2<uint16, P> const & v) - { - i16vec2 Unpack(uninitialize); - memcpy(&Unpack, &v, sizeof(Unpack)); - return tvec2<float, P>(detail::toFloat32(v.x), detail::toFloat32(v.y)); - } - }; - - template <precision P> - struct compute_half<P, tvec3> - { - GLM_FUNC_QUALIFIER static tvec3<uint16, P> pack(tvec3<float, P> const & v) - { - tvec3<int16, P> const Unpack(detail::toFloat16(v.x), detail::toFloat16(v.y), detail::toFloat16(v.z)); - u16vec3 Packed(uninitialize); - memcpy(&Packed, &Unpack, sizeof(Packed)); - return Packed; - } - - GLM_FUNC_QUALIFIER static tvec3<float, P> unpack(tvec3<uint16, P> const & v) - { - i16vec3 Unpack(uninitialize); - memcpy(&Unpack, &v, sizeof(Unpack)); - return tvec3<float, P>(detail::toFloat32(v.x), detail::toFloat32(v.y), detail::toFloat32(v.z)); - } - }; - - template <precision P> - struct compute_half<P, tvec4> - { - GLM_FUNC_QUALIFIER static tvec4<uint16, P> pack(tvec4<float, P> const & v) - { - tvec4<int16, P> const Unpack(detail::toFloat16(v.x), detail::toFloat16(v.y), detail::toFloat16(v.z), detail::toFloat16(v.w)); - u16vec4 Packed(uninitialize); - memcpy(&Packed, &Unpack, sizeof(Packed)); - return Packed; - } - - GLM_FUNC_QUALIFIER static tvec4<float, P> unpack(tvec4<uint16, P> const & v) - { - i16vec4 Unpack(uninitialize); - memcpy(&Unpack, &v, sizeof(Unpack)); - return tvec4<float, P>(detail::toFloat32(v.x), detail::toFloat32(v.y), detail::toFloat32(v.z), detail::toFloat32(v.w)); - } - }; -}//namespace detail - - GLM_FUNC_QUALIFIER uint8 packUnorm1x8(float v) - { - return static_cast<uint8>(round(clamp(v, 0.0f, 1.0f) * 255.0f)); - } - - GLM_FUNC_QUALIFIER float unpackUnorm1x8(uint8 p) - { - float const Unpack(p); - return Unpack * static_cast<float>(0.0039215686274509803921568627451); // 1 / 255 - } - - GLM_FUNC_QUALIFIER uint16 packUnorm2x8(vec2 const & v) - { - u8vec2 const Topack(round(clamp(v, 0.0f, 1.0f) * 255.0f)); - - uint16 Unpack = 0; - memcpy(&Unpack, &Topack, sizeof(Unpack)); - return Unpack; - } - - GLM_FUNC_QUALIFIER vec2 unpackUnorm2x8(uint16 p) - { - u8vec2 Unpack(uninitialize); - memcpy(&Unpack, &p, sizeof(Unpack)); - return vec2(Unpack) * float(0.0039215686274509803921568627451); // 1 / 255 - } - - GLM_FUNC_QUALIFIER uint8 packSnorm1x8(float v) - { - int8 const Topack(static_cast<int8>(round(clamp(v ,-1.0f, 1.0f) * 127.0f))); - uint8 Packed = 0; - memcpy(&Packed, &Topack, sizeof(Packed)); - return Packed; - } - - GLM_FUNC_QUALIFIER float unpackSnorm1x8(uint8 p) - { - int8 Unpack = 0; - memcpy(&Unpack, &p, sizeof(Unpack)); - return clamp( - static_cast<float>(Unpack) * 0.00787401574803149606299212598425f, // 1.0f / 127.0f - -1.0f, 1.0f); - } - - GLM_FUNC_QUALIFIER uint16 packSnorm2x8(vec2 const & v) - { - i8vec2 const Topack(round(clamp(v, -1.0f, 1.0f) * 127.0f)); - uint16 Packed = 0; - memcpy(&Packed, &Topack, sizeof(Packed)); - return Packed; - } - - GLM_FUNC_QUALIFIER vec2 unpackSnorm2x8(uint16 p) - { - i8vec2 Unpack(uninitialize); - memcpy(&Unpack, &p, sizeof(Unpack)); - return clamp( - vec2(Unpack) * 0.00787401574803149606299212598425f, // 1.0f / 127.0f - -1.0f, 1.0f); - } - - GLM_FUNC_QUALIFIER uint16 packUnorm1x16(float s) - { - return static_cast<uint16>(round(clamp(s, 0.0f, 1.0f) * 65535.0f)); - } - - GLM_FUNC_QUALIFIER float unpackUnorm1x16(uint16 p) - { - float const Unpack(p); - return Unpack * 1.5259021896696421759365224689097e-5f; // 1.0 / 65535.0 - } - - GLM_FUNC_QUALIFIER uint64 packUnorm4x16(vec4 const & v) - { - u16vec4 const Topack(round(clamp(v , 0.0f, 1.0f) * 65535.0f)); - uint64 Packed = 0; - memcpy(&Packed, &Topack, sizeof(Packed)); - return Packed; - } - - GLM_FUNC_QUALIFIER vec4 unpackUnorm4x16(uint64 p) - { - u16vec4 Unpack(uninitialize); - memcpy(&Unpack, &p, sizeof(Unpack)); - return vec4(Unpack) * 1.5259021896696421759365224689097e-5f; // 1.0 / 65535.0 - } - - GLM_FUNC_QUALIFIER uint16 packSnorm1x16(float v) - { - int16 const Topack = static_cast<int16>(round(clamp(v ,-1.0f, 1.0f) * 32767.0f)); - uint16 Packed = 0; - memcpy(&Packed, &Topack, sizeof(Packed)); - return Packed; - } - - GLM_FUNC_QUALIFIER float unpackSnorm1x16(uint16 p) - { - int16 Unpack = 0; - memcpy(&Unpack, &p, sizeof(Unpack)); - return clamp( - static_cast<float>(Unpack) * 3.0518509475997192297128208258309e-5f, //1.0f / 32767.0f, - -1.0f, 1.0f); - } - - GLM_FUNC_QUALIFIER uint64 packSnorm4x16(vec4 const & v) - { - i16vec4 const Topack(round(clamp(v ,-1.0f, 1.0f) * 32767.0f)); - uint64 Packed = 0; - memcpy(&Packed, &Topack, sizeof(Packed)); - return Packed; - } - - GLM_FUNC_QUALIFIER vec4 unpackSnorm4x16(uint64 p) - { - i16vec4 Unpack(uninitialize); - memcpy(&Unpack, &p, sizeof(Unpack)); - return clamp( - vec4(Unpack) * 3.0518509475997192297128208258309e-5f, //1.0f / 32767.0f, - -1.0f, 1.0f); - } - - GLM_FUNC_QUALIFIER uint16 packHalf1x16(float v) - { - int16 const Topack(detail::toFloat16(v)); - uint16 Packed = 0; - memcpy(&Packed, &Topack, sizeof(Packed)); - return Packed; - } - - GLM_FUNC_QUALIFIER float unpackHalf1x16(uint16 v) - { - int16 Unpack = 0; - memcpy(&Unpack, &v, sizeof(Unpack)); - return detail::toFloat32(Unpack); - } - - GLM_FUNC_QUALIFIER uint64 packHalf4x16(glm::vec4 const & v) - { - i16vec4 const Unpack( - detail::toFloat16(v.x), - detail::toFloat16(v.y), - detail::toFloat16(v.z), - detail::toFloat16(v.w)); - uint64 Packed = 0; - memcpy(&Packed, &Unpack, sizeof(Packed)); - return Packed; - } - - GLM_FUNC_QUALIFIER glm::vec4 unpackHalf4x16(uint64 v) - { - i16vec4 Unpack(uninitialize); - memcpy(&Unpack, &v, sizeof(Unpack)); - return vec4( - detail::toFloat32(Unpack.x), - detail::toFloat32(Unpack.y), - detail::toFloat32(Unpack.z), - detail::toFloat32(Unpack.w)); - } - - GLM_FUNC_QUALIFIER uint32 packI3x10_1x2(ivec4 const & v) - { - detail::i10i10i10i2 Result; - Result.data.x = v.x; - Result.data.y = v.y; - Result.data.z = v.z; - Result.data.w = v.w; - return Result.pack; - } - - GLM_FUNC_QUALIFIER ivec4 unpackI3x10_1x2(uint32 v) - { - detail::i10i10i10i2 Unpack; - Unpack.pack = v; - return ivec4( - Unpack.data.x, - Unpack.data.y, - Unpack.data.z, - Unpack.data.w); - } - - GLM_FUNC_QUALIFIER uint32 packU3x10_1x2(uvec4 const & v) - { - detail::u10u10u10u2 Result; - Result.data.x = v.x; - Result.data.y = v.y; - Result.data.z = v.z; - Result.data.w = v.w; - return Result.pack; - } - - GLM_FUNC_QUALIFIER uvec4 unpackU3x10_1x2(uint32 v) - { - detail::u10u10u10u2 Unpack; - Unpack.pack = v; - return uvec4( - Unpack.data.x, - Unpack.data.y, - Unpack.data.z, - Unpack.data.w); - } - - GLM_FUNC_QUALIFIER uint32 packSnorm3x10_1x2(vec4 const & v) - { - detail::i10i10i10i2 Result; - Result.data.x = int(round(clamp(v.x,-1.0f, 1.0f) * 511.f)); - Result.data.y = int(round(clamp(v.y,-1.0f, 1.0f) * 511.f)); - Result.data.z = int(round(clamp(v.z,-1.0f, 1.0f) * 511.f)); - Result.data.w = int(round(clamp(v.w,-1.0f, 1.0f) * 1.f)); - return Result.pack; - } - - GLM_FUNC_QUALIFIER vec4 unpackSnorm3x10_1x2(uint32 v) - { - detail::i10i10i10i2 Unpack; - Unpack.pack = v; - vec4 Result; - Result.x = clamp(float(Unpack.data.x) / 511.f, -1.0f, 1.0f); - Result.y = clamp(float(Unpack.data.y) / 511.f, -1.0f, 1.0f); - Result.z = clamp(float(Unpack.data.z) / 511.f, -1.0f, 1.0f); - Result.w = clamp(float(Unpack.data.w) / 1.f, -1.0f, 1.0f); - return Result; - } - - GLM_FUNC_QUALIFIER uint32 packUnorm3x10_1x2(vec4 const & v) - { - uvec4 const Unpack(round(clamp(v, 0.0f, 1.0f) * vec4(1023.f, 1023.f, 1023.f, 3.f))); - - detail::u10u10u10u2 Result; - Result.data.x = Unpack.x; - Result.data.y = Unpack.y; - Result.data.z = Unpack.z; - Result.data.w = Unpack.w; - return Result.pack; - } - - GLM_FUNC_QUALIFIER vec4 unpackUnorm3x10_1x2(uint32 v) - { - vec4 const ScaleFactors(1.0f / 1023.f, 1.0f / 1023.f, 1.0f / 1023.f, 1.0f / 3.f); - - detail::u10u10u10u2 Unpack; - Unpack.pack = v; - return vec4(Unpack.data.x, Unpack.data.y, Unpack.data.z, Unpack.data.w) * ScaleFactors; - } - - GLM_FUNC_QUALIFIER uint32 packF2x11_1x10(vec3 const & v) - { - return - ((detail::floatTo11bit(v.x) & ((1 << 11) - 1)) << 0) | - ((detail::floatTo11bit(v.y) & ((1 << 11) - 1)) << 11) | - ((detail::floatTo10bit(v.z) & ((1 << 10) - 1)) << 22); - } - - GLM_FUNC_QUALIFIER vec3 unpackF2x11_1x10(uint32 v) - { - return vec3( - detail::packed11bitToFloat(v >> 0), - detail::packed11bitToFloat(v >> 11), - detail::packed10bitToFloat(v >> 22)); - } - - GLM_FUNC_QUALIFIER uint32 packF3x9_E1x5(vec3 const & v) - { - float const SharedExpMax = (pow(2.0f, 9.0f - 1.0f) / pow(2.0f, 9.0f)) * pow(2.0f, 31.f - 15.f); - vec3 const Color = clamp(v, 0.0f, SharedExpMax); - float const MaxColor = max(Color.x, max(Color.y, Color.z)); - - float const ExpSharedP = max(-15.f - 1.f, floor(log2(MaxColor))) + 1.0f + 15.f; - float const MaxShared = floor(MaxColor / pow(2.0f, (ExpSharedP - 16.f - 9.f)) + 0.5f); - float const ExpShared = MaxShared == pow(2.0f, 9.0f) ? ExpSharedP + 1.0f : ExpSharedP; - - uvec3 const ColorComp(floor(Color / pow(2.f, (ExpShared - 15.f - 9.f)) + 0.5f)); - - detail::u9u9u9e5 Unpack; - Unpack.data.x = ColorComp.x; - Unpack.data.y = ColorComp.y; - Unpack.data.z = ColorComp.z; - Unpack.data.w = uint(ExpShared); - return Unpack.pack; - } - - GLM_FUNC_QUALIFIER vec3 unpackF3x9_E1x5(uint32 v) - { - detail::u9u9u9e5 Unpack; - Unpack.pack = v; - - return vec3(Unpack.data.x, Unpack.data.y, Unpack.data.z) * pow(2.0f, Unpack.data.w - 15.f - 9.f); - } - - template <precision P, template <typename, precision> class vecType> - GLM_FUNC_QUALIFIER vecType<uint16, P> packHalf(vecType<float, P> const & v) - { - return detail::compute_half<P, vecType>::pack(v); - } - - template <precision P, template <typename, precision> class vecType> - GLM_FUNC_QUALIFIER vecType<float, P> unpackHalf(vecType<uint16, P> const & v) - { - return detail::compute_half<P, vecType>::unpack(v); - } - - template <typename uintType, typename floatType, precision P, template <typename, precision> class vecType> - GLM_FUNC_QUALIFIER vecType<uintType, P> packUnorm(vecType<floatType, P> const & v) - { - GLM_STATIC_ASSERT(std::numeric_limits<uintType>::is_integer, "uintType must be an integer type"); - GLM_STATIC_ASSERT(std::numeric_limits<floatType>::is_iec559, "floatType must be a floating point type"); - - return vecType<uintType, P>(round(clamp(v, static_cast<floatType>(0), static_cast<floatType>(1)) * static_cast<floatType>(std::numeric_limits<uintType>::max()))); - } - - template <typename uintType, typename floatType, precision P, template <typename, precision> class vecType> - GLM_FUNC_QUALIFIER vecType<floatType, P> unpackUnorm(vecType<uintType, P> const & v) - { - GLM_STATIC_ASSERT(std::numeric_limits<uintType>::is_integer, "uintType must be an integer type"); - GLM_STATIC_ASSERT(std::numeric_limits<floatType>::is_iec559, "floatType must be a floating point type"); - - return vecType<float, P>(v) * (static_cast<floatType>(1) / static_cast<floatType>(std::numeric_limits<uintType>::max())); - } - - template <typename intType, typename floatType, precision P, template <typename, precision> class vecType> - GLM_FUNC_QUALIFIER vecType<intType, P> packSnorm(vecType<floatType, P> const & v) - { - GLM_STATIC_ASSERT(std::numeric_limits<intType>::is_integer, "uintType must be an integer type"); - GLM_STATIC_ASSERT(std::numeric_limits<floatType>::is_iec559, "floatType must be a floating point type"); - - return vecType<intType, P>(round(clamp(v , static_cast<floatType>(-1), static_cast<floatType>(1)) * static_cast<floatType>(std::numeric_limits<intType>::max()))); - } - - template <typename intType, typename floatType, precision P, template <typename, precision> class vecType> - GLM_FUNC_QUALIFIER vecType<floatType, P> unpackSnorm(vecType<intType, P> const & v) - { - GLM_STATIC_ASSERT(std::numeric_limits<intType>::is_integer, "uintType must be an integer type"); - GLM_STATIC_ASSERT(std::numeric_limits<floatType>::is_iec559, "floatType must be a floating point type"); - - return clamp(vecType<floatType, P>(v) * (static_cast<floatType>(1) / static_cast<floatType>(std::numeric_limits<intType>::max())), static_cast<floatType>(-1), static_cast<floatType>(1)); - } - - GLM_FUNC_QUALIFIER uint8 packUnorm2x4(vec2 const & v) - { - u32vec2 const Unpack(round(clamp(v, 0.0f, 1.0f) * 15.0f)); - detail::u4u4 Result; - Result.data.x = Unpack.x; - Result.data.y = Unpack.y; - return Result.pack; - } - - GLM_FUNC_QUALIFIER vec2 unpackUnorm2x4(uint8 v) - { - float const ScaleFactor(1.f / 15.f); - detail::u4u4 Unpack; - Unpack.pack = v; - return vec2(Unpack.data.x, Unpack.data.y) * ScaleFactor; - } - - GLM_FUNC_QUALIFIER uint16 packUnorm4x4(vec4 const & v) - { - u32vec4 const Unpack(round(clamp(v, 0.0f, 1.0f) * 15.0f)); - detail::u4u4u4u4 Result; - Result.data.x = Unpack.x; - Result.data.y = Unpack.y; - Result.data.z = Unpack.z; - Result.data.w = Unpack.w; - return Result.pack; - } - - GLM_FUNC_QUALIFIER vec4 unpackUnorm4x4(uint16 v) - { - float const ScaleFactor(1.f / 15.f); - detail::u4u4u4u4 Unpack; - Unpack.pack = v; - return vec4(Unpack.data.x, Unpack.data.y, Unpack.data.z, Unpack.data.w) * ScaleFactor; - } - - GLM_FUNC_QUALIFIER uint16 packUnorm1x5_1x6_1x5(vec3 const & v) - { - u32vec3 const Unpack(round(clamp(v, 0.0f, 1.0f) * vec3(31.f, 63.f, 31.f))); - detail::u5u6u5 Result; - Result.data.x = Unpack.x; - Result.data.y = Unpack.y; - Result.data.z = Unpack.z; - return Result.pack; - } - - GLM_FUNC_QUALIFIER vec3 unpackUnorm1x5_1x6_1x5(uint16 v) - { - vec3 const ScaleFactor(1.f / 31.f, 1.f / 63.f, 1.f / 31.f); - detail::u5u6u5 Unpack; - Unpack.pack = v; - return vec3(Unpack.data.x, Unpack.data.y, Unpack.data.z) * ScaleFactor; - } - - GLM_FUNC_QUALIFIER uint16 packUnorm3x5_1x1(vec4 const & v) - { - u32vec4 const Unpack(round(clamp(v, 0.0f, 1.0f) * vec4(31.f, 31.f, 31.f, 1.f))); - detail::u5u5u5u1 Result; - Result.data.x = Unpack.x; - Result.data.y = Unpack.y; - Result.data.z = Unpack.z; - Result.data.w = Unpack.w; - return Result.pack; - } - - GLM_FUNC_QUALIFIER vec4 unpackUnorm3x5_1x1(uint16 v) - { - vec4 const ScaleFactor(1.f / 31.f, 1.f / 31.f, 1.f / 31.f, 1.f); - detail::u5u5u5u1 Unpack; - Unpack.pack = v; - return vec4(Unpack.data.x, Unpack.data.y, Unpack.data.z, Unpack.data.w) * ScaleFactor; - } - - GLM_FUNC_QUALIFIER uint8 packUnorm2x3_1x2(vec3 const & v) - { - u32vec3 const Unpack(round(clamp(v, 0.0f, 1.0f) * vec3(7.f, 7.f, 3.f))); - detail::u3u3u2 Result; - Result.data.x = Unpack.x; - Result.data.y = Unpack.y; - Result.data.z = Unpack.z; - return Result.pack; - } - - GLM_FUNC_QUALIFIER vec3 unpackUnorm2x3_1x2(uint8 v) - { - vec3 const ScaleFactor(1.f / 7.f, 1.f / 7.f, 1.f / 3.f); - detail::u3u3u2 Unpack; - Unpack.pack = v; - return vec3(Unpack.data.x, Unpack.data.y, Unpack.data.z) * ScaleFactor; - } -}//namespace glm - |