Ejemplo n.º 1
0
    unsafe int RunCPUBenchmark(peUpdateRoutine r, bool mt, string text)
    {
        IntPtr   ctx = peCreateContext(BenchmarkParticleCount);
        peParams p   = default(peParams);

        p.pressure_stiffness = m_pressure_stiffness;
        p.wall_stiffness     = m_wall_stiffness;
        p.particle_size      = m_particle_size;
        p.update_velocity    = Update_Velocity;
        p.update_position    = Update_Position;
        p.routine            = r;
        p.multi_threading    = mt;
        peSetParams(ctx, ref p);

        float elapsed_total = 0.0f;
        int   num_try       = 0;

        while (elapsed_total < BenchmarkTimeout)
        {
            float t = Time.realtimeSinceStartup;
            peUpdate(ctx, BenchmarkDeltaTime);
            elapsed_total += Time.realtimeSinceStartup - t;
            ++num_try;
        }
        peDestroyContext(ctx);

        m_output.text = m_output.text + text + (elapsed_total / num_try * 1000.0f).ToString("0.0") + "ms\n";
        return(0);
    }
Ejemplo n.º 2
0
    unsafe void Update()
    {
        if (Input.GetKeyDown(KeyCode.R))
        {
            ResetParticles();
        }
        if (Input.GetKeyDown(KeyCode.P))
        {
            m_pause = !m_pause;
        }

        if (m_pause)
        {
            return;
        }

        float t = Time.realtimeSinceStartup;

        if (m_routine == peUpdateRoutine.ComputeShader)
        {
            Update_ComputeShader(Time.deltaTime);
        }
        else
        {
            peParams p = default(peParams);
            p.routine            = m_routine;
            p.multi_threading    = m_multi_threading;
            p.pressure_stiffness = m_pressure_stiffness;
            p.wall_stiffness     = m_wall_stiffness;
            p.particle_size      = m_particle_size;
            p.update_velocity    = Update_Velocity;
            p.update_position    = Update_Position;
            peSetParams(m_ctx, ref p);
            peUpdate(m_ctx, Time.deltaTime);
        }
        m_update_time = Time.realtimeSinceStartup - t;
    }
Ejemplo n.º 3
0
 [DllImport("ParticleEngine")] public static extern void    peSetParams(IntPtr ctx, ref peParams v);
Ejemplo n.º 4
0
 public static extern void peSetParams(IntPtr ctx, ref peParams v);
Ejemplo n.º 5
0
    static unsafe void Update_Velocity(peParams* p, float dt, int begin, int end)
    {
        peParticle* particles = p->particles;
        float particle_size2 = p->particle_size * 2.0f;
        float rcp_particle_size2 = 1.0f / (p->particle_size * 2.0f);

        // パーティクル同士の押し返し
        for (int i = begin; i < end; ++i) {
            Vector3 pos1 = particles[i].position;
            Vector3 accel = Vector3.zero;
            for (int j = 0; j < p->particles_count; ++j) {
                Vector3 pos2 = particles[j].position;
                Vector3 diff = pos2 - pos1;
                Vector3 dir = diff * rcp_particle_size2;
                float dist = diff.magnitude;
                if (dist > 0.0f) {
                    Vector3 a = dir * (Mathf.Min(0.0f, dist - particle_size2) * p->pressure_stiffness);
                    accel = accel + a;
                }
            }

            Vector3 vel = particles[i].velocity;
            vel = vel + accel * dt;
            particles[i].velocity = vel;
        }

        // 床との衝突
        Vector3 floor_normal = new Vector3(0.0f, 1.0f, 0.0f);
        float floor_distance = -p->particle_size;
        for (int i = begin; i < end; ++i) {
            Vector3 pos = particles[i].position;
            float d = Vector3.Dot(pos, floor_normal) + floor_distance;
            Vector3 accel = floor_normal * (-Mathf.Min(0.0f, d) * p->wall_stiffness);
            Vector3 vel = particles[i].velocity;
            vel = vel + accel * dt;
            particles[i].velocity = vel;
        }

        // 重力加速
        Vector3 gravity_direction = new Vector3(0.0f, -1.0f, 0.0f);
        float gravity_strength = 5.0f;
        for (int i = begin; i < end; ++i) {
            Vector3 accel = gravity_direction * gravity_strength;
            Vector3 vel = particles[i].velocity;
            vel = vel + accel * dt;
            particles[i].velocity = vel;
        }
    }
Ejemplo n.º 6
0
 static unsafe void Update_Position(peParams* p, float dt, int begin, int end)
 {
     peParticle* particles = p->particles;
     for (int i = begin; i < end; ++i)
     {
         Vector3 pos = particles[i].position;
         Vector3 vel = particles[i].velocity;
         pos = pos + (vel * dt);
         particles[i].position = pos;
     }
 }