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swr/rast: Type-check TemplateArgUnroller

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Allows direct use of enum values in conversion to template args.

Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>
This commit is contained in:
George Kyriazis 2018-04-06 15:03:09 -05:00
parent 2966ee1028
commit a81c625cb7
1 changed files with 21 additions and 18 deletions
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39
src/gallium/drivers/swr/rasterizer/core/utils.h
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@ -268,12 +268,15 @@ public:
};
// Ranged integer argument for TemplateArgUnroller
template <uint32_t TMin, uint32_t TMax>
struct IntArg
template <typename T, T TMin, T TMax>
struct RangedArg
{
uint32_t val;
T val;
};
template <uint32_t TMin, uint32_t TMax>
using IntArg = RangedArg<uint32_t, TMin, TMax>;
// Recursive template used to auto-nest conditionals. Converts dynamic boolean function
// arguments to static template arguments.
template <typename TermT, typename... ArgsB>
@ -307,49 +310,49 @@ struct TemplateArgUnroller
}
//-----------------------------------------
// Integer value (within specified range)
// Ranged value (within specified range)
//-----------------------------------------
// Last Arg Terminator
template <uint32_t TMin, uint32_t TMax>
static typename TermT::FuncType GetFunc(IntArg<TMin, TMax> iArg)
template <typename T, T TMin, T TMax>
static typename TermT::FuncType GetFunc(RangedArg<T, TMin, TMax> iArg)
{
if (iArg.val == TMax)
{
return TermT::template GetFunc<ArgsB..., std::integral_constant<uint32_t, TMax>>();
return TermT::template GetFunc<ArgsB..., std::integral_constant<T, TMax>>();
}
if (TMax > TMin)
{
return TemplateArgUnroller<TermT, ArgsB...>::GetFunc(IntArg<TMin, TMax-1>{iArg.val});
return TemplateArgUnroller<TermT, ArgsB...>::GetFunc(RangedArg<T, TMin, (T)(int(TMax)-1)>{iArg.val});
}
SWR_ASSUME(false); return nullptr;
}
template <uint32_t TVal>
static typename TermT::FuncType GetFunc(IntArg<TVal, TVal> iArg)
template <typename T, T TVal>
static typename TermT::FuncType GetFunc(RangedArg<T, TVal, TVal> iArg)
{
SWR_ASSERT(iArg.val == TVal);
return TermT::template GetFunc<ArgsB..., std::integral_constant<uint32_t, TVal>>();
return TermT::template GetFunc<ArgsB..., std::integral_constant<T, TVal>>();
}
// Recursively parse args
template <uint32_t TMin, uint32_t TMax, typename... TArgsT>
static typename TermT::FuncType GetFunc(IntArg<TMin, TMax> iArg, TArgsT... remainingArgs)
template <typename T, T TMin, T TMax, typename... TArgsT>
static typename TermT::FuncType GetFunc(RangedArg<T, TMin, TMax> iArg, TArgsT... remainingArgs)
{
if (iArg.val == TMax)
{
return TemplateArgUnroller<TermT, ArgsB..., std::integral_constant<uint32_t, TMax>>::GetFunc(remainingArgs...);
return TemplateArgUnroller<TermT, ArgsB..., std::integral_constant<T, TMax>>::GetFunc(remainingArgs...);
}
if (TMax > TMin)
{
return TemplateArgUnroller<TermT, ArgsB...>::GetFunc(IntArg<TMin, TMax - 1>{iArg.val}, remainingArgs...);
return TemplateArgUnroller<TermT, ArgsB...>::GetFunc(RangedArg<T, TMin, (T)(int(TMax) - 1)>{iArg.val}, remainingArgs...);
}
SWR_ASSUME(false); return nullptr;
}
template <uint32_t TVal, typename... TArgsT>
static typename TermT::FuncType GetFunc(IntArg<TVal, TVal> iArg, TArgsT... remainingArgs)
template <typename T, T TVal, typename... TArgsT>
static typename TermT::FuncType GetFunc(RangedArg<T, TVal, TVal> iArg, TArgsT... remainingArgs)
{
SWR_ASSERT(iArg.val == TVal);
return TemplateArgUnroller<TermT, ArgsB..., std::integral_constant<uint32_t, TVal>>::GetFunc(remainingArgs...);
return TemplateArgUnroller<TermT, ArgsB..., std::integral_constant<T, TVal>>::GetFunc(remainingArgs...);
}
};