You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and dots ('.'), can be up to 35 characters long. Letters must be lowercase.
392 lines
12 KiB
392 lines
12 KiB
#pragma once |
|
|
|
// Removed after upgrading to GLM 0.9.8 |
|
namespace gli{ |
|
namespace workaround{ |
|
namespace detail |
|
{ |
|
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 u9u9u9e5 |
|
{ |
|
struct |
|
{ |
|
uint x : 9; |
|
uint y : 9; |
|
uint z : 9; |
|
uint w : 5; |
|
} data; |
|
uint32 pack; |
|
}; |
|
|
|
template <typename T, typename floatType, precision P, template <typename, precision> class vecType, bool isInteger, bool signedType> |
|
struct compute_compNormalize |
|
{}; |
|
|
|
template <typename T, typename floatType, precision P, template <typename, precision> class vecType> |
|
struct compute_compNormalize<T, floatType, P, vecType, true, true> |
|
{ |
|
GLM_FUNC_QUALIFIER static vecType<floatType, P> call(vecType<T, P> const & v) |
|
{ |
|
floatType const Min = static_cast<floatType>(std::numeric_limits<T>::min()); |
|
floatType const Max = static_cast<floatType>(std::numeric_limits<T>::max()); |
|
return (vecType<floatType, P>(v) - Min) / (Max - Min) * static_cast<floatType>(2) - static_cast<floatType>(1); |
|
} |
|
}; |
|
|
|
template <typename T, typename floatType, precision P, template <typename, precision> class vecType> |
|
struct compute_compNormalize<T, floatType, P, vecType, true, false> |
|
{ |
|
GLM_FUNC_QUALIFIER static vecType<floatType, P> call(vecType<T, P> const & v) |
|
{ |
|
return vecType<floatType, P>(v) / static_cast<floatType>(std::numeric_limits<T>::max()); |
|
} |
|
}; |
|
|
|
template <typename T, typename floatType, precision P, template <typename, precision> class vecType> |
|
struct compute_compNormalize<T, floatType, P, vecType, false, true> |
|
{ |
|
GLM_FUNC_QUALIFIER static vecType<floatType, P> call(vecType<T, P> const & v) |
|
{ |
|
return v; |
|
} |
|
}; |
|
|
|
template <typename T, typename floatType, precision P, template <typename, precision> class vecType, bool isInteger, bool signedType> |
|
struct compute_compScale |
|
{}; |
|
|
|
template <typename T, typename floatType, precision P, template <typename, precision> class vecType> |
|
struct compute_compScale<T, floatType, P, vecType, true, true> |
|
{ |
|
GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<floatType, P> const & v) |
|
{ |
|
floatType const Max = static_cast<floatType>(std::numeric_limits<T>::max()) + static_cast<floatType>(0.5); |
|
vecType<floatType, P> const Scaled(v * Max); |
|
vecType<T, P> const Result(Scaled - static_cast<floatType>(0.5)); |
|
return Result; |
|
} |
|
}; |
|
|
|
template <typename T, typename floatType, precision P, template <typename, precision> class vecType> |
|
struct compute_compScale<T, floatType, P, vecType, true, false> |
|
{ |
|
GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<floatType, P> const & v) |
|
{ |
|
return vecType<T, P>(vecType<floatType, P>(v) * static_cast<floatType>(std::numeric_limits<T>::max())); |
|
} |
|
}; |
|
|
|
template <typename T, typename floatType, precision P, template <typename, precision> class vecType> |
|
struct compute_compScale<T, floatType, P, vecType, false, true> |
|
{ |
|
GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<floatType, P> const & v) |
|
{ |
|
return v; |
|
} |
|
}; |
|
|
|
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 Unpacked(glm::detail::toFloat16(v.x)); |
|
return tvec1<uint16, P>(reinterpret_cast<uint16 const &>(Unpacked)); |
|
} |
|
|
|
GLM_FUNC_QUALIFIER static tvec1<float, P> unpack(tvec1<uint16, P> const & v) |
|
{ |
|
return tvec1<float, P>(glm::detail::toFloat32(reinterpret_cast<int16 const &>(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 Unpacked(glm::detail::toFloat16(v.x), glm::detail::toFloat16(v.y)); |
|
return tvec2<uint16, P>( |
|
reinterpret_cast<uint16 const &>(Unpacked.x), |
|
reinterpret_cast<uint16 const &>(Unpacked.y)); |
|
} |
|
|
|
GLM_FUNC_QUALIFIER static tvec2<float, P> unpack(tvec2<uint16, P> const & v) |
|
{ |
|
return tvec2<float, P>( |
|
glm::detail::toFloat32(reinterpret_cast<int16 const &>(v.x)), |
|
glm::detail::toFloat32(reinterpret_cast<int16 const &>(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 Unpacked(glm::detail::toFloat16(v.x), glm::detail::toFloat16(v.y), glm::detail::toFloat16(v.z)); |
|
return tvec3<uint16, P>( |
|
reinterpret_cast<uint16 const &>(Unpacked.x), |
|
reinterpret_cast<uint16 const &>(Unpacked.y), |
|
reinterpret_cast<uint16 const &>(Unpacked.z)); |
|
} |
|
|
|
GLM_FUNC_QUALIFIER static tvec3<float, P> unpack(tvec3<uint16, P> const & v) |
|
{ |
|
return tvec3<float, P>( |
|
glm::detail::toFloat32(reinterpret_cast<int16 const &>(v.x)), |
|
glm::detail::toFloat32(reinterpret_cast<int16 const &>(v.y)), |
|
glm::detail::toFloat32(reinterpret_cast<int16 const &>(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 Unpacked(glm::detail::toFloat16(v.x), glm::detail::toFloat16(v.y), glm::detail::toFloat16(v.z), glm::detail::toFloat16(v.w)); |
|
return tvec4<uint16, P>( |
|
reinterpret_cast<uint16 const &>(Unpacked.x), |
|
reinterpret_cast<uint16 const &>(Unpacked.y), |
|
reinterpret_cast<uint16 const &>(Unpacked.z), |
|
reinterpret_cast<uint16 const &>(Unpacked.w)); |
|
} |
|
|
|
GLM_FUNC_QUALIFIER static tvec4<float, P> unpack(tvec4<uint16, P> const & v) |
|
{ |
|
return tvec4<float, P>( |
|
glm::detail::toFloat32(reinterpret_cast<int16 const &>(v.x)), |
|
glm::detail::toFloat32(reinterpret_cast<int16 const &>(v.y)), |
|
glm::detail::toFloat32(reinterpret_cast<int16 const &>(v.z)), |
|
glm::detail::toFloat32(reinterpret_cast<int16 const &>(v.w))); |
|
} |
|
}; |
|
}//namespace detail |
|
|
|
template <typename floatType, typename T, precision P, template <typename, precision> class vecType> |
|
GLM_FUNC_QUALIFIER vecType<floatType, P> compNormalize(vecType<T, P> const & v) |
|
{ |
|
GLM_STATIC_ASSERT(std::numeric_limits<floatType>::is_iec559, "'compNormalize' accepts only floating-point types for 'floatType' template parameter"); |
|
|
|
return detail::compute_compNormalize<T, floatType, P, vecType, std::numeric_limits<T>::is_integer, std::numeric_limits<T>::is_signed>::call(v); |
|
} |
|
|
|
template <typename T, typename floatType, precision P, template <typename, precision> class vecType> |
|
GLM_FUNC_QUALIFIER vecType<T, P> compScale(vecType<floatType, P> const & v) |
|
{ |
|
GLM_STATIC_ASSERT(std::numeric_limits<floatType>::is_iec559, "'compScale' accepts only floating-point types for 'floatType' template parameter"); |
|
|
|
return detail::compute_compScale<T, floatType, P, vecType, std::numeric_limits<T>::is_integer, std::numeric_limits<T>::is_signed>::call(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())); |
|
} |
|
|
|
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; |
|
} |
|
|
|
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 packUnorm3x5_1x1(vec4 const & v) |
|
{ |
|
u32vec4 const Unpack(round(clamp(v, 0.0f, 1.0f) * vec4(15.f, 15.f, 15.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 / 15.f, 1.f / 15.f, 1.f / 15.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 uint16 packUnorm1x5_1x6_1x5(vec3 const & v) |
|
{ |
|
u32vec3 const Unpack(round(clamp(v, 0.0f, 1.0f) * vec3(15.f, 31.f, 15.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 / 15.f, 1.f / 31.f, 1.f / 15.f); |
|
detail::u5u6u5 Unpack; |
|
Unpack.pack = v; |
|
return vec3(Unpack.data.x, Unpack.data.y, Unpack.data.z) * ScaleFactor; |
|
} |
|
|
|
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); |
|
} |
|
}//namespace workaround |
|
}//namespace gli |
|
|
|
|