Ceres: Update to the latest upstream version

Using latest master because of various compilation error fixes.

Brings a lot of recent development. From most interesting parts:

- New threading model.
- Tiny solver.
- Compatibility with C++17.

1 files changed, 3 insertions, 14 deletions

diff --git a/intern/libmv/libmv/simple_pipeline/bundle.cc b/intern/libmv/libmv/simple_pipeline/bundle.cc
index 2ecc0505e1f..22ab0cdf864 100644
--- a/intern/libmv/libmv/simple_pipeline/bundle.cc
+++ b/intern/libmv/libmv/simple_pipeline/bundle.cc
@@ -21,6 +21,7 @@
 #include "libmv/simple_pipeline/bundle.h"
 
 #include <map>
+#include <thread>
 
 #include "ceres/ceres.h"
 #include "ceres/rotation.h"
@@ -35,10 +36,6 @@
 #include "libmv/simple_pipeline/tracks.h"
 #include "libmv/simple_pipeline/distortion_models.h"
 
-#ifdef _OPENMP
-#  include <omp.h>
-#endif
-
 namespace libmv {
 
 // The intrinsics need to get combined into a single parameter block; use these
@@ -642,11 +639,7 @@ void EuclideanBundlePointsOnly(const CameraIntrinsics *invariant_intrinsics,
   options.use_explicit_schur_complement = true;
   options.use_inner_iterations = true;
   options.max_num_iterations = 100;
-
-#ifdef _OPENMP
-  options.num_threads = omp_get_max_threads();
-  options.num_linear_solver_threads = omp_get_max_threads();
-#endif
+  options.num_threads = std::thread::hardware_concurrency();
 
   // Solve!
   ceres::Solver::Summary summary;
@@ -807,11 +800,7 @@ void EuclideanBundleCommonIntrinsics(
   options.use_explicit_schur_complement = true;
   options.use_inner_iterations = true;
   options.max_num_iterations = 100;
-
-#ifdef _OPENMP
-  options.num_threads = omp_get_max_threads();
-  options.num_linear_solver_threads = omp_get_max_threads();
-#endif
+  options.num_threads = std::thread::hardware_concurrency();
 
   // Solve!
   ceres::Solver::Summary summary;