106 lines
2.6 KiB
C++
106 lines
2.6 KiB
C++
#include "voxel_stream_cache.h"
|
|
|
|
namespace zylann::voxel {
|
|
|
|
bool VoxelStreamCache::load_voxel_block(Vector3i position, uint8_t lod_index, VoxelBufferInternal &out_voxels) {
|
|
const Lod &lod = _cache[lod_index];
|
|
|
|
RWLockRead rlock(lod.rw_lock);
|
|
|
|
auto it = lod.blocks.find(position);
|
|
|
|
if (it == lod.blocks.end()) {
|
|
// Not in cache, will have to query
|
|
return false;
|
|
|
|
} else {
|
|
// In cache, serve it
|
|
|
|
const VoxelBufferInternal &vb = it->second.voxels;
|
|
|
|
// Copying is required since the cache has ownership on its data,
|
|
// and the requests wants us to populate the buffer it provides
|
|
vb.duplicate_to(out_voxels, true);
|
|
|
|
return true;
|
|
}
|
|
}
|
|
|
|
void VoxelStreamCache::save_voxel_block(Vector3i position, uint8_t lod_index, VoxelBufferInternal &voxels) {
|
|
Lod &lod = _cache[lod_index];
|
|
RWLockWrite wlock(lod.rw_lock);
|
|
auto it = lod.blocks.find(position);
|
|
|
|
if (it == lod.blocks.end()) {
|
|
// Not cached yet, create an entry
|
|
Block b;
|
|
b.position = position;
|
|
b.lod = lod_index;
|
|
// TODO Optimization: if we know the buffer is not shared, we could use move instead
|
|
voxels.duplicate_to(b.voxels, true);
|
|
b.has_voxels = true;
|
|
lod.blocks.insert(std::make_pair(position, std::move(b)));
|
|
++_count;
|
|
|
|
} else {
|
|
// Cached already, overwrite
|
|
voxels.move_to(it->second.voxels);
|
|
it->second.has_voxels = true;
|
|
}
|
|
}
|
|
|
|
bool VoxelStreamCache::load_instance_block(
|
|
Vector3i position, uint8_t lod_index, UniquePtr<InstanceBlockData> &out_instances) {
|
|
const Lod &lod = _cache[lod_index];
|
|
lod.rw_lock.read_lock();
|
|
auto it = lod.blocks.find(position);
|
|
|
|
if (it == lod.blocks.end()) {
|
|
// Not in cache, will have to query
|
|
lod.rw_lock.read_unlock();
|
|
return false;
|
|
|
|
} else {
|
|
// In cache, serve it
|
|
|
|
if (it->second.instances == nullptr) {
|
|
out_instances = nullptr;
|
|
|
|
} else {
|
|
// Copying is required since the cache has ownership on its data
|
|
out_instances = make_unique_instance<InstanceBlockData>();
|
|
it->second.instances->copy_to(*out_instances);
|
|
}
|
|
|
|
lod.rw_lock.read_unlock();
|
|
return true;
|
|
}
|
|
}
|
|
|
|
void VoxelStreamCache::save_instance_block(
|
|
Vector3i position, uint8_t lod_index, UniquePtr<InstanceBlockData> instances) {
|
|
Lod &lod = _cache[lod_index];
|
|
RWLockWrite wlock(lod.rw_lock);
|
|
auto it = lod.blocks.find(position);
|
|
|
|
if (it == lod.blocks.end()) {
|
|
// Not cached yet, create an entry
|
|
Block b;
|
|
b.position = position;
|
|
b.lod = lod_index;
|
|
b.instances = std::move(instances);
|
|
lod.blocks.insert(std::make_pair(position, std::move(b)));
|
|
++_count;
|
|
|
|
} else {
|
|
// Cached already, overwrite
|
|
it->second.instances = std::move(instances);
|
|
}
|
|
}
|
|
|
|
unsigned int VoxelStreamCache::get_indicative_block_count() const {
|
|
return _count;
|
|
}
|
|
|
|
} // namespace zylann::voxel
|