TPCTransform: Reduce loads from GridRowInfo

Author: davidrohr

GPU/TPCFastTransformation/TPCFastTransformPOD.h

@@ -320,9 +320,9 @@ GPUdi() void TPCFastTransformPOD::getCorrectionLocal(int32_t sector, int32_t row
     s = 0.f; // TODO: DR: Protect from FPEs, fix upstream and remove once guaranteed that it is fixed
   }
 
-  dx = s * GPUCommonMath::Clamp(dxyz[0], info.minCorr[0], info.maxCorr[0]);
-  dy = s * GPUCommonMath::Clamp(dxyz[1], info.minCorr[1], info.maxCorr[1]);
-  dz = s * GPUCommonMath::Clamp(dxyz[2], info.minCorr[2], info.maxCorr[2]);
+  dx = s * GPUCommonMath::Clamp(dxyz[0], -10.f, 10.f);
+  dy = s * GPUCommonMath::Clamp(dxyz[1], -10.f, 10.f);
+  dz = s * GPUCommonMath::Clamp(dxyz[2], -10.f, 10.f);
 }
 
 GPUdi() float TPCFastTransformPOD::getCorrectionXatRealYZ(int32_t sector, int32_t row, float realY, float realZ) const
@@ -341,7 +341,7 @@ GPUdi() float TPCFastTransformPOD::getCorrectionXatRealYZ(int32_t sector, int32_
   if (CAMath::Abs(dx) > 100.f) {
     s = 0.f; // TODO: DR: Protect from FPEs, fix upstream and remove once guaranteed that it is fixed
   }
-  dx = s * GPUCommonMath::Clamp(dx, info.minCorr[0], info.maxCorr[0]);
+  dx = s * GPUCommonMath::Clamp(dx, -10.f, 10.f);
   return dx;
 }
 
@@ -360,16 +360,16 @@ GPUdi() void TPCFastTransformPOD::getCorrectionYZatRealYZ(int32_t sector, int32_
   if (CAMath::Abs(dyz[0]) > 100.f || CAMath::Abs(dyz[1]) > 100.f) {
     s = 0.f; // TODO: DR: Protect from FPEs, fix upstream and remove once guaranteed that it is fixed
   }
-  y = s * GPUCommonMath::Clamp(dyz[0], info.minCorr[1], info.maxCorr[1]);
-  z = s * GPUCommonMath::Clamp(dyz[1], info.minCorr[2], info.maxCorr[2]);
+  y = s * GPUCommonMath::Clamp(dyz[0], -10.f, 10.f);
+  z = s * GPUCommonMath::Clamp(dyz[1], -10.f, 10.f);
 }
 
 GPUdi() void TPCFastTransformPOD::convLocalToGrid(int32_t sector, int32_t row, float y, float z, float& u, float& v, float& s) const
 {
   /// convert local y, z to internal grid coordinates u,v
   /// return values: u, v, scaling factor
   const SplineType& spline = getSpline(sector, row);
-  getSectorRowInfo(sector, row).gridMeasured.convLocalToGridUntruncated(y, z, u, v, s);
+  getSectorRowInfo(sector >= 18 ? 18 : 0, row).gridMeasured.convLocalToGridUntruncated(y, z, u, v, s);
   // shrink to the grid
   u = GPUCommonMath::Clamp(u, 0.f, (float)spline.getGridX1().getUmax());
   v = GPUCommonMath::Clamp(v, 0.f, (float)spline.getGridX2().getUmax());
@@ -378,7 +378,7 @@ GPUdi() void TPCFastTransformPOD::convLocalToGrid(int32_t sector, int32_t row, f
 GPUdi() void TPCFastTransformPOD::convGridToLocal(int32_t sector, int32_t row, float gridU, float gridV, float& y, float& z) const
 {
   /// convert internal grid coordinates u,v to local y, z
-  getSectorRowInfo(sector, row).gridMeasured.convGridToLocal(gridU, gridV, y, z);
+  getSectorRowInfo(sector >= 18 ? 18 : 0, row).gridMeasured.convGridToLocal(gridU, gridV, y, z);
 }
 
 GPUdi() void TPCFastTransformPOD::convRealLocalToGrid(int32_t sector, int32_t row, float y, float z, float& u, float& v, float& s) const
@@ -401,7 +401,7 @@ GPUdi() bool TPCFastTransformPOD::isLocalInsideGrid(int32_t sector, int32_t row,
 {
   /// check if local y, z are inside the grid
   float u, v, s;
-  getSectorRowInfo(sector, row).gridMeasured.convLocalToGridUntruncated(y, z, u, v, s);
+  getSectorRowInfo(sector >= 18 ? 18 : 0, row).gridMeasured.convLocalToGridUntruncated(y, z, u, v, s);
   const auto& spline = getSpline(sector, row);
   // shrink to the grid
   if (u < 0.f || u > (float)spline.getGridX1().getUmax() || //