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Parallelize M2 bone matrix computation across worker threads

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Split the M2 animation update loop into three phases: sequential animation state update, parallel bone matrix computation via std::async (when 32+ animated instances), and sequential particle update. Each thread processes a disjoint slice of instances so no synchronization is needed.
This commit is contained in:
Kelsi 2026-02-07 14:28:14 -08:00
parent 5bfe4b61aa
commit 249c4fa842
2 changed files with 61 additions and 4 deletions
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4
include/rendering/m2_renderer.hpp
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@ -10,6 +10,7 @@
#include <string>
#include <optional>
#include <random>
#include <future>
namespace wowee {
@ -354,6 +355,9 @@ private:
static constexpr size_t MAX_M2_PARTICLES = 4000;
std::mt19937 particleRng_{123};
// Thread count for parallel bone animation
uint32_t numAnimThreads_ = 1;
float interpFloat(const pipeline::M2AnimationTrack& track, float animTime, int seqIdx,
const std::vector<pipeline::M2Sequence>& seqs,
const std::vector<uint32_t>& globalSeqDurations);