Add a regression test for passing a variant as an argument to a worklet.
Variants are tricky objects, and the compiler might make some strange
assumptions during optimization.
One case that popped up in particular was when a variant contained two
objects with the same `sizeof` but the first object had padding. When the
variant contained the second object, the value under the padded part of
the first object was not set.
I've been seeing errors in a nightly build that compiles for CUDA Pascal
using GCC5. The issue is that one of the `ArrayHandleMultiplexer` tests
is failing to copy an implicit array correctly. I think the problem is
that in this test the first and second type of the `Variant` are the same
size, but the first type has some padding in the middle whereas the
second type does not. When using this second type, the values in the
same position of the padding of the first type don't seem to be
initialized properly in the kernel invocation.
My nonexhaustive experiment shows that things work OK as long as the
first type is large enough and has no fillers. Enforce this by adding an
internal entry to the union that is completely full.
This new filtered designed for bi-variate analysis builds the continuous scatterplot of a 3D tetrahedralized mesh for two given scalar point fields. The continuous scatterplot is an extension of the discrete scatterplot for continuous bi-variate analysis.
While adding checks to the size of implicit arrays, it was discovered
that some of the Mask and ScatterPermutation arrays were constructed
with the wrong sizes during dispatch. In particular, these arrays were
supposed to be sized on the output, but were instead sized on the input.
They went unnoticed because they were using implicit arrays that worked
even if the array access went out of bounds.
The clip filter used to copy the input points and point fields as is,
regardless of if they were actually part of the output. With this change,
we track which input points are actually part of the output and copy
only those values.
Address: #112
014c429eb Make divide by volume in particle density estimate a little safer
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Li-Ta Lo <ollie@lanl.gov>
Merge-request: !3022
While going through the VTK-m code to identify where a cast-and-call was
happening against VTKM_DEFAULT_TYPE_LIST, I ran into a subtle case in
`ParticleDensityBase` that was calling a worklet with an
`UnknownArrayHandle`. This works OK, but was probably compiling for
unnecessary types (for example, vectors). Changed the field resolution
to be more intentional.
MR !2969 was meant to update the clip filters such that their field
mapping works on any field type and preserves the value type. Although
this was done for `ClipWithField`, it was not fully implemented for
`ClipWithImplicitFunction`. These changes update
`ClipWithImplicitFunction` to match its sibling.
ac889b500 Implement VecTraits class for all types
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Li-Ta Lo <ollie@lanl.gov>
Merge-request: !3018
