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constexpr-fy sf::priv::Vector4

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This commit is contained in:
Chris Thrasher 2024-04-07 18:26:19 -06:00
parent f1bdacb57f
commit 6eaf300918
3 changed files with 71 additions and 81 deletions
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46
include/SFML/Graphics/Glsl.inl
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@ -27,6 +27,7 @@
////////////////////////////////////////////////////////////
#include <SFML/Graphics/Export.hpp>
#include <SFML/Graphics/Color.hpp>
#include <SFML/Graphics/Glsl.hpp> // NOLINT(misc-header-include-cycle)
#include <cstddef>
@ -34,7 +35,6 @@
namespace sf
{
class Color;
class Transform;
} // namespace sf
@ -56,13 +56,6 @@ void SFML_GRAPHICS_API copyMatrix(const Transform& source, Matrix<4, 4>& dest);
////////////////////////////////////////////////////////////
void SFML_GRAPHICS_API copyMatrix(const float* source, std::size_t elements, float* dest);
////////////////////////////////////////////////////////////
/// \brief Helper functions to copy sf::Color to sf::Glsl::Vec4/Ivec4
///
////////////////////////////////////////////////////////////
void SFML_GRAPHICS_API copyVector(const Color& source, Vector4<float>& dest);
void SFML_GRAPHICS_API copyVector(const Color& source, Vector4<int>& dest);
////////////////////////////////////////////////////////////
/// \brief Matrix type, used to set uniforms in GLSL
@ -112,7 +105,7 @@ struct Vector4
/// \brief Default constructor, creates a zero vector
///
////////////////////////////////////////////////////////////
Vector4() = default;
constexpr Vector4() = default;
////////////////////////////////////////////////////////////
/// \brief Construct from 4 vector components
@ -127,7 +120,7 @@ struct Vector4
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wshadow"
#endif
Vector4(T x, T y, T z, T w) : x(x), y(y), z(z), w(w)
constexpr Vector4(T x, T y, T z, T w) : x(x), y(y), z(z), w(w)
{
}
#if defined(__GNUC__)
@ -141,7 +134,7 @@ struct Vector4
///
////////////////////////////////////////////////////////////
template <typename U>
explicit Vector4(const Vector4<U>& other) :
constexpr explicit Vector4(const Vector4<U>& other) :
x(static_cast<T>(other.x)),
y(static_cast<T>(other.y)),
z(static_cast<T>(other.z)),
@ -150,16 +143,15 @@ struct Vector4
}
////////////////////////////////////////////////////////////
/// \brief Construct float vector implicitly from color
/// \brief Construct vector implicitly from color
///
/// \param color Color instance. Is normalized to [0, 1]
/// for floats, and left as-is for ints.
/// Vector is normalized to [0, 1] for floats, and left as-is
/// for ints. Not defined for other template arguments.
///
/// \param color Color instance
///
////////////////////////////////////////////////////////////
Vector4(const Color& color)
{
copyVector(color, *this);
}
constexpr Vector4(const Color& color);
T x{}; //!< 1st component (X) of the 4D vector
T y{}; //!< 2nd component (Y) of the 4D vector
@ -167,4 +159,22 @@ struct Vector4
T w{}; //!< 4th component (W) of the 4D vector
};
////////////////////////////////////////////////////////////
template <>
constexpr Vector4<float>::Vector4(const Color& color) :
x(color.r / 255.f),
y(color.g / 255.f),
z(color.b / 255.f),
w(color.a / 255.f)
{
}
////////////////////////////////////////////////////////////
template <>
constexpr Vector4<int>::Vector4(const Color& color) : x(color.r), y(color.g), z(color.b), w(color.a)
{
}
} // namespace sf::priv

20
src/SFML/Graphics/Glsl.cpp
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@ -69,24 +69,4 @@ void copyMatrix(const float* source, std::size_t elements, float* dest)
std::copy(source, source + elements, dest);
}
////////////////////////////////////////////////////////////
void copyVector(const Color& source, Vector4<float>& dest)
{
dest.x = source.r / 255.f;
dest.y = source.g / 255.f;
dest.z = source.b / 255.f;
dest.w = source.a / 255.f;
}
////////////////////////////////////////////////////////////
void copyVector(const Color& source, Vector4<int>& dest)
{
dest.x = static_cast<int>(source.r);
dest.y = static_cast<int>(source.g);
dest.z = static_cast<int>(source.b);
dest.w = static_cast<int>(source.a);
}
} // namespace sf::priv

86
test/Graphics/Glsl.test.cpp
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@ -126,30 +126,30 @@ TEST_CASE("[Graphics] sf::Glsl")
SECTION("Verbose constructor")
{
const sf::Glsl::Vec4 vec(1, 2, 3, 4);
CHECK(vec.x == 1);
CHECK(vec.y == 2);
CHECK(vec.z == 3);
CHECK(vec.w == 4);
constexpr sf::Glsl::Vec4 vec(1, 2, 3, 4);
STATIC_CHECK(vec.x == 1);
STATIC_CHECK(vec.y == 2);
STATIC_CHECK(vec.z == 3);
STATIC_CHECK(vec.w == 4);
}
SECTION("Conversion constructor")
{
const sf::Glsl::Ivec4 ivec(10, 12, 14, 16);
const sf::Glsl::Vec4 vec(ivec);
CHECK(vec.x == 10);
CHECK(vec.y == 12);
CHECK(vec.z == 14);
CHECK(vec.w == 16);
constexpr sf::Glsl::Ivec4 ivec(10, 12, 14, 16);
constexpr sf::Glsl::Vec4 vec(ivec);
STATIC_CHECK(vec.x == 10);
STATIC_CHECK(vec.y == 12);
STATIC_CHECK(vec.z == 14);
STATIC_CHECK(vec.w == 16);
}
SECTION("Color constructor")
{
const sf::Glsl::Vec4 vec(sf::Color(0, 128, 192, 255));
CHECK(vec.x == 0.f);
CHECK(vec.y == Approx(0.50196f));
CHECK(vec.z == Approx(0.75294f));
CHECK(vec.w == 1.f);
constexpr sf::Glsl::Vec4 vec = sf::Color(0, 128, 192, 255);
STATIC_CHECK(vec.x == 0.f);
STATIC_CHECK(vec.y == 128 / 255.f);
STATIC_CHECK(vec.z == 192 / 255.f);
STATIC_CHECK(vec.w == 1.f);
}
}
@ -174,30 +174,30 @@ TEST_CASE("[Graphics] sf::Glsl")
SECTION("Verbose constructor")
{
const sf::Glsl::Ivec4 vec(1, 2, 3, 4);
CHECK(vec.x == 1);
CHECK(vec.y == 2);
CHECK(vec.z == 3);
CHECK(vec.w == 4);
constexpr sf::Glsl::Ivec4 vec(1, 2, 3, 4);
STATIC_CHECK(vec.x == 1);
STATIC_CHECK(vec.y == 2);
STATIC_CHECK(vec.z == 3);
STATIC_CHECK(vec.w == 4);
}
SECTION("Conversion constructor")
{
const sf::Glsl::Bvec4 bvec(true, false, true, false);
const sf::Glsl::Ivec4 vec(bvec);
CHECK(vec.x == 1);
CHECK(vec.y == 0);
CHECK(vec.z == 1);
CHECK(vec.w == 0);
constexpr sf::Glsl::Bvec4 bvec(true, false, true, false);
constexpr sf::Glsl::Ivec4 vec(bvec);
STATIC_CHECK(vec.x == 1);
STATIC_CHECK(vec.y == 0);
STATIC_CHECK(vec.z == 1);
STATIC_CHECK(vec.w == 0);
}
SECTION("Color constructor")
{
const sf::Glsl::Ivec4 vec(sf::Color(0, 128, 192, 255));
CHECK(vec.x == 0);
CHECK(vec.y == 128);
CHECK(vec.z == 192);
CHECK(vec.w == 255);
constexpr sf::Glsl::Ivec4 vec = sf::Color(0, 128, 192, 255);
STATIC_CHECK(vec.x == 0);
STATIC_CHECK(vec.y == 128);
STATIC_CHECK(vec.z == 192);
STATIC_CHECK(vec.w == 255);
}
}
@ -222,21 +222,21 @@ TEST_CASE("[Graphics] sf::Glsl")
SECTION("Verbose constructor")
{
const sf::Glsl::Bvec4 vec(false, true, true, false);
CHECK(vec.x == false);
CHECK(vec.y == true);
CHECK(vec.z == true);
CHECK(vec.w == false);
constexpr sf::Glsl::Bvec4 vec(false, true, true, false);
STATIC_CHECK(vec.x == false);
STATIC_CHECK(vec.y == true);
STATIC_CHECK(vec.z == true);
STATIC_CHECK(vec.w == false);
}
SECTION("Conversion constructor")
{
const sf::Glsl::Ivec4 ivec(0, -7, 2, 10);
const sf::Glsl::Bvec4 vec(ivec);
CHECK(vec.x == false);
CHECK(vec.y == true);
CHECK(vec.z == true);
CHECK(vec.w == true);
constexpr sf::Glsl::Ivec4 ivec(0, -7, 2, 10);
constexpr sf::Glsl::Bvec4 vec(ivec);
STATIC_CHECK(vec.x == false);
STATIC_CHECK(vec.y == true);
STATIC_CHECK(vec.z == true);
STATIC_CHECK(vec.w == true);
}
}