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Test reinterpreting an sf::Color as a std::uint8_t*

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Chris Thrasher 2022-09-15 10:11:17 -06:00 committed by Vittorio Romeo
parent 939ec267df
commit 0e475f3f50
1 changed files with 24 additions and 0 deletions
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24
test/Graphics/Color.cpp
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@ -3,6 +3,7 @@
#include <doctest/doctest.h> #include <doctest/doctest.h>
#include <GraphicsUtil.hpp> #include <GraphicsUtil.hpp>
#include <vector>
TEST_CASE("[Graphics] sf::Color") TEST_CASE("[Graphics] sf::Color")
{ {
@ -152,4 +153,27 @@ TEST_CASE("[Graphics] sf::Color")
static_assert(sf::Color::Black == sf::Color(0, 0, 0, 255)); static_assert(sf::Color::Black == sf::Color(0, 0, 0, 255));
} }
SUBCASE("Reinterpret as std::uint8_t*")
{
static_assert(sizeof(sf::Color) == 4);
static_assert(alignof(sf::Color) == 1);
const std::vector<sf::Color> pixels = {{10, 11, 12, 13}, {14, 15, 16, 17}, {18, 19, 20, 21}};
const std::uint8_t* begin = reinterpret_cast<const std::uint8_t*>(pixels.data());
CHECK(begin[0] == pixels[0].r);
CHECK(begin[1] == pixels[0].g);
CHECK(begin[2] == pixels[0].b);
CHECK(begin[3] == pixels[0].a);
CHECK(begin[4] == pixels[1].r);
CHECK(begin[5] == pixels[1].g);
CHECK(begin[6] == pixels[1].b);
CHECK(begin[7] == pixels[1].a);
CHECK(begin[8] == pixels[2].r);
CHECK(begin[9] == pixels[2].g);
CHECK(begin[10] == pixels[2].b);
CHECK(begin[11] == pixels[2].a);
}
} }