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author | Sergey Sharybin <sergey@blender.org> | 2022-02-10 12:37:00 +0300 |
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committer | Sergey Sharybin <sergey@blender.org> | 2022-02-10 14:39:41 +0300 |
commit | 04d55038ee52fc1155cc0ece916d90fd535c2364 (patch) | |
tree | c216c00833a652d914a3a7012751bdd4c2fb90a9 /source/blender | |
parent | 87d2de88fdeec75c7dcd77f93d51ee71542b45ce (diff) |
Fix size_t -> int -> size_t round trip in Cycles
There are two things achieved by this change:
- No possible downcast of size_t to int when calculating motion steps.
- Disambiguate call to `min()` which was for some reason considered
ambiguous on 32bit platforms `min(int, unsigned int)`.
- Do the same for the `max()` call to keep them symmetrical.
On an implementation side the `min()` is defined for a fixed width
integer type to disambiguate uint from size_t on 32bit platforms,
and yet be able to use it for 32bit operands on 64bit platforms without
upcast.
This ended up in a bit bigger change as the conditional compile-in of
functions is easiest if the functions is templated. Making the functions
templated required to remove the other source of ambiguity which is
`algorithm.h` which was pulling min/max from std.
Now it is the `math.h` which is the source of truth for min/max.
It was only one place which was relying on `algorithm.h` for these
functions, hence the choice of `math.h` as the safest and least
intrusive.
Fixes 32bit platforms (such as i386) in Debian package build system.
Differential Revision: https://developer.blender.org/D14062
Diffstat (limited to 'source/blender')
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