Fixed sharedmemsize name in workgroup, add some few utilities for faster mul by i,-i in complex

Author: Fletterio

include/nbl/builtin/hlsl/complex.hlsl

@@ -378,4 +378,23 @@ NBL_REGISTER_OBJ_TYPE(complex_t<float64_t2>,::nbl::hlsl::alignment_of_v<float64_
 NBL_REGISTER_OBJ_TYPE(complex_t<float64_t3>,::nbl::hlsl::alignment_of_v<float64_t3>)
 NBL_REGISTER_OBJ_TYPE(complex_t<float64_t4>,::nbl::hlsl::alignment_of_v<float64_t4>)
 
+
+
+--------------------------------------------- Some more functions that come in handy --------------------------------------
+// Fast mul by i
+template<typename Scalar>
+complex_t<Scalar> rotateLeft(NBL_CONST_REF_ARG(complex_t<Scalar>) value) 
+{
+    complex_t<Scalar> retVal = {- value.imag(), value.real()};
+    return retVal;
+}
+
+// Fast mul by -i
+template<typename Scalar>
+complex_t<Scalar> rotateRight(NBL_CONST_REF_ARG(complex_t<Scalar>) value) 
+{
+    complex_t<Scalar> retVal = {value.imag(), -value.real()};
+    return retVal;
+}
+
 #endif

include/nbl/builtin/hlsl/workgroup/fft.hlsl

@@ -95,7 +95,7 @@ struct exchangeValues<SharedMemoryAdaptor, float64_t>
 
 // Get the required size (in number of uint32_t elements) of the workgroup shared memory array needed for the FFT
 template <typename scalar_t, uint32_t WorkgroupSize>
-NBL_CONSTEXPR uint32_t sharedMemSize = (sizeof(complex_t<scalar_t>) / sizeof(uint32_t))  * WorkgroupSize;
+NBL_CONSTEXPR uint32_t SharedMemoryDWORDs = (sizeof(complex_t<scalar_t>) / sizeof(uint32_t))  * WorkgroupSize;
 
 } //namespace fft