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Volumes: speedup extracting dense voxel values

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Extract dense voxels if a very memory bandwidth limited task. I get a 10-20%
speedup be reducing the number of threads doing it at the same time.
This commit is contained in:
Jacques Lucke
2024-08-17 00:25:36 +02:00
parent aa3549f590
commit f21a25489f
1 changed files with 5 additions and 2 deletions
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7
source/blender/blenkernel/intern/volume_render.cc
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@@ -12,6 +12,7 @@
#include "BLI_math_matrix.h"
#include "BLI_math_vector.h"
#include "BLI_math_vector_types.hh"
#include "BLI_task.hh"
#include "BLI_vector.hh"
#include "DNA_volume_types.h"
@@ -35,8 +36,10 @@ static void extract_dense_voxels(const openvdb::GridBase &grid,
VoxelType *r_voxels)
{
BLI_assert(grid.isType<GridType>());
openvdb::tools::Dense<VoxelType, openvdb::tools::LayoutXYZ> dense(bbox, r_voxels);
openvdb::tools::copyToDense(static_cast<const GridType &>(grid), dense);
blender::threading::memory_bandwidth_bound_task(bbox.volume() * sizeof(VoxelType), [&]() {
openvdb::tools::Dense<VoxelType, openvdb::tools::LayoutXYZ> dense(bbox, r_voxels);
openvdb::tools::copyToDense(static_cast<const GridType &>(grid), dense);
});
}
static void extract_dense_float_voxels(const VolumeGridType grid_type,