Method PostSim

Source/Engine/Particles/Graph/GPU/GPUParticles.cpp:279–304

}

void GPUParticles::PostSim(GPUContext* context, ParticleEmitter* emitter, ParticleEffect* effect, int32 emitterIndex, ParticleEmitterInstance& data)
{
    const uint32 counterOffset = data.Buffer->GPU.ParticleCounterOffset;

    // Copy custom data
    for (int32 i = 0; i < CustomDataSize; i += 4)
    {
        const uint32 offset = counterOffset + 4 + i * 4;
        context->CopyBuffer(data.Buffer->GPU.Buffer, data.Buffer->GPU.BufferSecondary, 4, offset, offset);
    }

    // Update state
    data.Buffer->GPU.ParticlesCountMax = Math::Min(data.Buffer->GPU.ParticlesCountMax + data.GPU.SpawnCount, data.Buffer->Capacity);
    data.Buffer->GPU.HasValidCount = true;
    data.GPU.DeltaTime = 0.0f;
    data.GPU.SpawnCount = 0;

    // Swap particle buffers
    Swap(data.Buffer->GPU.Buffer, data.Buffer->GPU.BufferSecondary);

    // Copy particles count if need to
    if (effect->Instance.GPUParticlesCountReadback && effect->Instance.GPUParticlesCountReadback->IsAllocated())
    {
        context->CopyBuffer(effect->Instance.GPUParticlesCountReadback, data.Buffer->GPU.Buffer, sizeof(uint32), emitterIndex * sizeof(uint32), counterOffset);
    }
}

#endif