GPU: Fix direction for material correction in sector track refit

davidrohr · davidrohr · commit c60297666362 · 2025-09-10T19:57:21.000+02:00
diff --git a/GPU/GPUTracking/Merger/GPUTPCGMMerger.cxx b/GPU/GPUTracking/Merger/GPUTPCGMMerger.cxx
@@ -514,7 +514,7 @@ GPUd() int32_t GPUTPCGMMerger::RefitSectorTrack(GPUTPCGMSectorTrack& sectorTrack
       const ClusterNative& cl = GetConstantMem()->ioPtrs.clustersNative->clustersLinear[GetConstantMem()->ioPtrs.clustersNative->clusterOffset[sector][0] + clusterIndex];
       flags = cl.getFlags();
       GetConstantMem()->calibObjects.fastTransformHelper->Transform(sector, row, cl.getPad(), cl.getTime(), x, y, z, trk.TZOffset());
-      if (prop.PropagateToXAlpha(x, alpha, true)) {
+      if (prop.PropagateToXAlpha(x, alpha, way == 0)) {
         return way == 0;
       }
       trk.ConstrainSinPhi();

Original file line number	Diff line number	Diff line change
`@@ -514,7 +514,7 @@ GPUd() int32_t GPUTPCGMMerger::RefitSectorTrack(GPUTPCGMSectorTrack& sectorTrack`
`514`	`514`	`const ClusterNative& cl = GetConstantMem()->ioPtrs.clustersNative->clustersLinear[GetConstantMem()->ioPtrs.clustersNative->clusterOffset[sector][0] + clusterIndex];`
`515`	`515`	`flags = cl.getFlags();`
`516`	`516`	`GetConstantMem()->calibObjects.fastTransformHelper->Transform(sector, row, cl.getPad(), cl.getTime(), x, y, z, trk.TZOffset());`
`517`		`- if (prop.PropagateToXAlpha(x, alpha, true)) {`
	`517`	`+ if (prop.PropagateToXAlpha(x, alpha, way == 0)) {`
`518`	`518`	`return way == 0;`
`519`	`519`	`}`
`520`	`520`	`trk.ConstrainSinPhi();`