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Fixed mod function specialization #281 Fixed bitscan detection

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This commit is contained in:
Christophe Riccio
2014-11-29 18:47:58 +01:00
parent 9b250cc86f
commit 7e81213fdd
8 changed files with 225 additions and 36 deletions
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40
glm/gtc/integer.hpp
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@@ -45,6 +45,7 @@
// Dependencies
#include "../detail/setup.hpp"
#include "../detail/precision.hpp"
#include "../detail/func_common.hpp"
#include "../detail/func_integer.hpp"
#include "../detail/func_exponential.hpp"
#include <limits>
@@ -58,11 +59,46 @@ namespace glm
/// @addtogroup gtc_integer
/// @{
/// Returns the log2 of x. Can be reliably using to compute mipmap count from the texture size.
/// From GLM_GTC_integer extension.
/// Returns the log2 of x for integer values. Can be reliably using to compute mipmap count from the texture size.
/// @see gtc_integer
template <typename genIUType>
GLM_FUNC_DECL genIUType log2(genIUType x);
/// Modulus. Returns x % y
/// for each component in x using the floating point value y.
///
/// @tparam genIUType Integer-point scalar or vector types.
///
/// @see gtc_integer
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/mod.xml">GLSL mod man page</a>
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
template <typename genIUType>
GLM_FUNC_DECL genIUType mod(genIUType x, genIUType y);
/// Modulus. Returns x % y
/// for each component in x using the floating point value y.
///
/// @tparam T Integer scalar types.
/// @tparam vecType vector types.
///
/// @see gtc_integer
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/mod.xml">GLSL mod man page</a>
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
template <typename T, precision P, template <typename, precision> class vecType>
GLM_FUNC_DECL vecType<T, P> mod(vecType<T, P> const & x, T y);
/// Modulus. Returns x % y
/// for each component in x using the floating point value y.
///
/// @tparam T Integer scalar types.
/// @tparam vecType vector types.
///
/// @see gtc_integer
/// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/mod.xml">GLSL mod man page</a>
/// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.3 Common Functions</a>
template <typename T, precision P, template <typename, precision> class vecType>
GLM_FUNC_DECL vecType<T, P> mod(vecType<T, P> const & x, vecType<T, P> const & y);
/// @}
} //namespace glm

35
glm/gtc/integer.inl
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@@ -44,24 +44,31 @@ namespace detail
}
};
# if(GLM_ARCH != GLM_ARCH_PURE) && (GLM_COMPILER & (GLM_COMPILER_VC | GLM_COMPILER_APPLE_CLANG | GLM_COMPILER_LLVM))
template <precision P>
struct compute_log2<int, P, tvec4, false>
{
GLM_FUNC_QUALIFIER static tvec4<int, P> call(tvec4<int, P> const & vec)
# if GLM_HAS_BITSCAN_WINDOWS
template <precision P>
struct compute_log2<int, P, tvec4, false>
{
tvec4<int, P> Result(glm::uninitialize);
GLM_FUNC_QUALIFIER static tvec4<int, P> call(tvec4<int, P> const & vec)
{
tvec4<int, P> Result(glm::uninitialize);
_BitScanReverse(reinterpret_cast<unsigned long*>(&Result.x), vec.x);
_BitScanReverse(reinterpret_cast<unsigned long*>(&Result.y), vec.y);
_BitScanReverse(reinterpret_cast<unsigned long*>(&Result.z), vec.z);
_BitScanReverse(reinterpret_cast<unsigned long*>(&Result.w), vec.w);
_BitScanReverse(reinterpret_cast<unsigned long*>(&Result.x), vec.x);
_BitScanReverse(reinterpret_cast<unsigned long*>(&Result.y), vec.y);
_BitScanReverse(reinterpret_cast<unsigned long*>(&Result.z), vec.z);
_BitScanReverse(reinterpret_cast<unsigned long*>(&Result.w), vec.w);
return Result;
return Result;
}
};
# endif//GLM_HAS_BITSCAN_WINDOWS
template <typename T, precision P, template <class, precision> class vecType, typename genType>
struct compute_mod<T, P, vecType, genType, false>
{
GLM_FUNC_QUALIFIER static vecType<T, P> call(vecType<T, P> const & a, genType const & b)
{
return a % b;
}
};
# endif//GLM_ARCH != GLM_ARCH_PURE
}//namespace detail
}//namespace glm