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Fix bitfieldInsert according to GLSL spec

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"bitfieldInsert inserts the bits least significant bits of insert into base at offset offset..."
This commit is contained in:
Florian Penzkofer 2018-10-04 17:23:44 -05:00
parent 77ce9b5b29
commit d0ae3f966e
2 changed files with 4 additions and 4 deletions
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2
glm/detail/func_integer.inl
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@ -269,7 +269,7 @@ namespace detail
GLM_STATIC_ASSERT(std::numeric_limits<T>::is_integer, "'bitfieldInsert' only accept integer values");
T const Mask = static_cast<T>(detail::mask(Bits) << Offset);
return (Base & ~Mask) | (Insert & Mask);
return (Base & ~Mask) | ((Insert << static_cast<T>(Offset)) & Mask);
}
// bitfieldReverse

6
test/core/core_func_integer.cpp
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@ -41,9 +41,9 @@ namespace bitfieldInsert
{0x00000000, 0xffffffff, 0, 32, 0xffffffff},
{0x00000000, 0xffffffff, 0, 31, 0x7fffffff},
{0x00000000, 0xffffffff, 0, 0, 0x00000000},
{0xff000000, 0x0000ff00, 8, 8, 0xff00ff00},
{0xffff0000, 0x0000ffff, 16, 16, 0x00000000},
{0x0000ffff, 0xffff0000, 16, 16, 0xffffffff}
{0xff000000, 0x000000ff, 8, 8, 0xff00ff00},
{0xffff0000, 0xffff0000, 16, 16, 0x00000000},
{0x0000ffff, 0x0000ffff, 16, 16, 0xffffffff}
};
static int test()