Improve FFT map multiplication kernel

bioem_cuda.cu

@@ -115,12 +115,18 @@ __global__ void compareRefMapLoopShifts_kernel(const int iOrient, const int iCon
 __global__ void multComplexMap(const mycomplex_t* convmap, const mycomplex_t* refmap, mycuComplex_t* out, const int NumberPixelsTotal, const int MapSize, const int NumberMaps, const int Offset)
 {
 	if (myBlockIdxX >= NumberMaps) return;
-	const mycomplex_t* myin = &refmap[myBlockIdxX * MapSize + Offset];
+	const mycuComplex_t* myin = (mycuComplex_t*) &refmap[myBlockIdxX * MapSize + Offset];
+	const mycuComplex_t* myconv = (mycuComplex_t*) convmap;
 	mycuComplex_t* myout = &out[myBlockIdxX * MapSize];
 	for(int i = myThreadIdxX; i < NumberPixelsTotal; i += myBlockDimX)
 	{
-		myout[i].x = convmap[i][0] * myin[i][0] + convmap[i][1] * myin[i][1];
-		myout[i].y = convmap[i][1] * myin[i][0] - convmap[i][0] * myin[i][1];
+		mycuComplex_t val;
+		const mycuComplex_t conv = myconv[i];
+		const mycuComplex_t in = myin[i];
+
+		val.x = conv.x * in.x + conv.y * in.y;
+		val.y = conv.y * in.x - conv.x * in.y;
+		myout[i] = val;
 	}
 }