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Tests/ComputeParticlesTest: Change behavior when pressing space 

And try to minimize hang by multithreading particle update
This commit is contained in:
SirLynix 2023-08-04 16:42:54 +02:00
parent 5444e4186e
commit b418ed6a32
1 changed files with 11 additions and 2 deletions
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13
tests/ComputeParticlesTest/main.cpp
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@ -9,6 +9,7 @@
#include <Nazara/Utility.hpp>
#include <array>
#include <chrono>
#include <execution>
#include <iostream>
#include <random>
#include <thread>
@ -255,10 +256,18 @@ int main()
}
Nz::UInt8* particleBasePtr = static_cast<Nz::UInt8*>(ptr) + particlesArrayOffset;
Nz::SparsePtr<Nz::Vector2f> particlePosPtr(particleBasePtr + particlePosOffset, particleSize);
Nz::SparsePtr<Nz::Vector2f> particleVelPtr(particleBasePtr + particleVelOffset, particleSize);
for (std::size_t i = 0; i < particleCount; ++i)
particleVelPtr[i] = Nz::Vector2f(velDis(rand), velDis(rand));
std::for_each_n(std::execution::par_unseq, particleBasePtr, particleCount, [&](Nz::UInt8& hax)
{
static thread_local std::mt19937 rand_mt(std::random_device{}());
std::size_t index = &hax - particleBasePtr; //< HAAX
particleVelPtr[index] += (particlePosPtr[index] - newMousePos).GetNormal() * 500.f;
particleVelPtr[index] += Nz::Vector2f(velDis(rand_mt), velDis(rand_mt));
});
particleBuffer->Unmap();
});