diff options
author | Jacques Lucke <jacques@blender.org> | 2020-07-19 14:58:49 +0300 |
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committer | Jacques Lucke <jacques@blender.org> | 2020-07-19 14:58:58 +0300 |
commit | 5063820c9b7fdc499c0aa16ca850541101ffda09 (patch) | |
tree | 45541e8148069cabdadfd9ac4dc00558498e73c0 /source/blender/simulation/intern/particle_allocator.hh | |
parent | 8c90910dcc3ac56ecaa3f0d0ed1a43a423ff687f (diff) |
Particles: Emit particles over time
This adds a basic internal emitter for every particle simulation.
The emitter cannot be controlled by the user yet. That will
come next.
Diffstat (limited to 'source/blender/simulation/intern/particle_allocator.hh')
-rw-r--r-- | source/blender/simulation/intern/particle_allocator.hh | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/source/blender/simulation/intern/particle_allocator.hh b/source/blender/simulation/intern/particle_allocator.hh new file mode 100644 index 00000000000..f854413c9aa --- /dev/null +++ b/source/blender/simulation/intern/particle_allocator.hh @@ -0,0 +1,95 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#ifndef __SIM_PARTICLE_ALLOCATOR_HH__ +#define __SIM_PARTICLE_ALLOCATOR_HH__ + +#include "BLI_array.hh" +#include "BLI_vector.hh" + +#include "FN_attributes_ref.hh" + +#include <atomic> +#include <mutex> + +namespace blender::sim { + +class AttributesAllocator : NonCopyable, NonMovable { + private: + struct AttributesBlock { + Array<void *> buffers; + uint size; + }; + + const fn::AttributesInfo &attributes_info_; + Vector<std::unique_ptr<AttributesBlock>> allocated_blocks_; + Vector<fn::MutableAttributesRef> allocated_attributes_; + uint total_allocated_ = 0; + std::mutex mutex_; + + public: + AttributesAllocator(const fn::AttributesInfo &attributes_info) + : attributes_info_(attributes_info) + { + } + + ~AttributesAllocator(); + + Span<fn::MutableAttributesRef> get_allocations() const + { + return allocated_attributes_; + } + + uint total_allocated() const + { + return total_allocated_; + } + + const fn::AttributesInfo &attributes_info() const + { + return attributes_info_; + } + + fn::MutableAttributesRef allocate_uninitialized(uint size); +}; + +class ParticleAllocator : NonCopyable, NonMovable { + private: + AttributesAllocator attributes_allocator_; + std::atomic<uint> next_id_; + + public: + ParticleAllocator(const fn::AttributesInfo &attributes_info, uint next_id) + : attributes_allocator_(attributes_info), next_id_(next_id) + { + } + + Span<fn::MutableAttributesRef> get_allocations() const + { + return attributes_allocator_.get_allocations(); + } + + uint total_allocated() const + { + return attributes_allocator_.total_allocated(); + } + + fn::MutableAttributesRef allocate(uint size); +}; + +} // namespace blender::sim + +#endif /* __SIM_PARTICLE_ALLOCATOR_HH__ */ |