着色器模型 5 内部函数
着色器模型 5 实现着色器模型 4 及更低版本中的内部函数 (请参阅 内部函数 (DirectX HLSL) ，获取受支持函数) 的完整列表，以及以下新函数：
- AllMemoryBarrier
- AllMemoryBarrierWithGroupSync
- asdouble
- asuint
- countbits
- ddx_coarse
- ddy_coarse
- DeviceMemoryBarrier
- DeviceMemoryBarrierWithGroupSync
- EvaluateAttributeCentroid
- EvaluateAttributeAtSample
- f16tof32
- f32tof16
- firstbithigh
- firstbitlow
- fma
- GroupMemoryBarrier
- GroupMemoryBarrierWithGroupSync
- InterlockedAdd
- InterlockedAnd
- InterlockedCompareExchange
- InterlockedCompareStore
- InterlockedExchange
- InterlockedMax
- InterlockedMin
- InterlockedOr
- InterlockedXor
- msad4
- Process2DQuadTessFactorsAvg
- Process2DQuadTessFactorsMax
- Process2DQuadTessFactorsMin
- ProcessIsolineTessFactors
- ProcessQuadTessFactorsAvg
- ProcessQuadTessFactorsMax
- ProcessQuadTessFactorsMin
- ProcessTriTessFactorsAvg
- ProcessTriTessFactorsMax
- ProcessTriTessFactorsMin
- rcp
- reversebits
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