Mantaflow [Part 1]: Added preprocessed Mantaflow source files

Includes preprocessed Mantaflow source files for both OpenMP and TBB (if OpenMP is not present, TBB files will be used instead).

These files come directly from the Mantaflow repository. Future updates to the core fluid solver will take place by updating the files.

Reviewed By: sergey, mont29

Maniphest Tasks: T59995

Differential Revision: https://developer.blender.org/D3850

1 files changed, 435 insertions, 0 deletions

diff --git a/extern/mantaflow/preprocessed/plugin/fire.cpp b/extern/mantaflow/preprocessed/plugin/fire.cpp
new file mode 100644
index 00000000000..9047d4bf8a1
--- /dev/null
+++ b/extern/mantaflow/preprocessed/plugin/fire.cpp
@@ -0,0 +1,435 @@
+
+
+// DO NOT EDIT !
+// This file is generated using the MantaFlow preprocessor (prep generate).
+
+/******************************************************************************
+ *
+ * MantaFlow fluid solver framework
+ * Copyright 2016 Sebastian Barschkis, Nils Thuerey
+ *
+ * This program is free software, distributed under the terms of the
+ * Apache License, Version 2.0
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Fire modeling plugin
+ *
+ ******************************************************************************/
+
+#include "general.h"
+#include "grid.h"
+#include "vectorbase.h"
+
+using namespace std;
+
+namespace Manta {
+
+struct KnProcessBurn : public KernelBase {
+  KnProcessBurn(Grid<Real> &fuel,
+                Grid<Real> &density,
+                Grid<Real> &react,
+                Grid<Real> *red,
+                Grid<Real> *green,
+                Grid<Real> *blue,
+                Grid<Real> *heat,
+                Real burningRate,
+                Real flameSmoke,
+                Real ignitionTemp,
+                Real maxTemp,
+                Real dt,
+                Vec3 flameSmokeColor)
+      : KernelBase(&fuel, 1),
+        fuel(fuel),
+        density(density),
+        react(react),
+        red(red),
+        green(green),
+        blue(blue),
+        heat(heat),
+        burningRate(burningRate),
+        flameSmoke(flameSmoke),
+        ignitionTemp(ignitionTemp),
+        maxTemp(maxTemp),
+        dt(dt),
+        flameSmokeColor(flameSmokeColor)
+  {
+    runMessage();
+    run();
+  }
+  inline void op(int i,
+                 int j,
+                 int k,
+                 Grid<Real> &fuel,
+                 Grid<Real> &density,
+                 Grid<Real> &react,
+                 Grid<Real> *red,
+                 Grid<Real> *green,
+                 Grid<Real> *blue,
+                 Grid<Real> *heat,
+                 Real burningRate,
+                 Real flameSmoke,
+                 Real ignitionTemp,
+                 Real maxTemp,
+                 Real dt,
+                 Vec3 flameSmokeColor) const
+  {
+    // Save initial values
+    Real origFuel = fuel(i, j, k);
+    Real origSmoke = density(i, j, k);
+    Real smokeEmit = 0.0f;
+    Real flame = 0.0f;
+
+    // Process fuel
+    fuel(i, j, k) -= burningRate * dt;
+    if (fuel(i, j, k) < 0.0f)
+      fuel(i, j, k) = 0.0f;
+
+    // Process reaction coordinate
+    if (origFuel > VECTOR_EPSILON) {
+      react(i, j, k) *= fuel(i, j, k) / origFuel;
+      flame = pow(react(i, j, k), 0.5f);
+    }
+    else {
+      react(i, j, k) = 0.0f;
+    }
+
+    // Set fluid temperature based on fuel burn rate and "flameSmoke" factor
+    smokeEmit = (origFuel < 1.0f) ? (1.0 - origFuel) * 0.5f : 0.0f;
+    smokeEmit = (smokeEmit + 0.5f) * (origFuel - fuel(i, j, k)) * 0.1f * flameSmoke;
+    density(i, j, k) += smokeEmit;
+    clamp(density(i, j, k), (Real)0.0f, (Real)1.0f);
+
+    // Set fluid temperature from the flame temperature profile
+    if (heat && flame)
+      (*heat)(i, j, k) = (1.0f - flame) * ignitionTemp + flame * maxTemp;
+
+    // Mix new color
+    if (smokeEmit > VECTOR_EPSILON) {
+      float smokeFactor = density(i, j, k) / (origSmoke + smokeEmit);
+      if (red)
+        (*red)(i, j, k) = ((*red)(i, j, k) + flameSmokeColor.x * smokeEmit) * smokeFactor;
+      if (green)
+        (*green)(i, j, k) = ((*green)(i, j, k) + flameSmokeColor.y * smokeEmit) * smokeFactor;
+      if (blue)
+        (*blue)(i, j, k) = ((*blue)(i, j, k) + flameSmokeColor.z * smokeEmit) * smokeFactor;
+    }
+  }
+  inline Grid<Real> &getArg0()
+  {
+    return fuel;
+  }
+  typedef Grid<Real> type0;
+  inline Grid<Real> &getArg1()
+  {
+    return density;
+  }
+  typedef Grid<Real> type1;
+  inline Grid<Real> &getArg2()
+  {
+    return react;
+  }
+  typedef Grid<Real> type2;
+  inline Grid<Real> *getArg3()
+  {
+    return red;
+  }
+  typedef Grid<Real> type3;
+  inline Grid<Real> *getArg4()
+  {
+    return green;
+  }
+  typedef Grid<Real> type4;
+  inline Grid<Real> *getArg5()
+  {
+    return blue;
+  }
+  typedef Grid<Real> type5;
+  inline Grid<Real> *getArg6()
+  {
+    return heat;
+  }
+  typedef Grid<Real> type6;
+  inline Real &getArg7()
+  {
+    return burningRate;
+  }
+  typedef Real type7;
+  inline Real &getArg8()
+  {
+    return flameSmoke;
+  }
+  typedef Real type8;
+  inline Real &getArg9()
+  {
+    return ignitionTemp;
+  }
+  typedef Real type9;
+  inline Real &getArg10()
+  {
+    return maxTemp;
+  }
+  typedef Real type10;
+  inline Real &getArg11()
+  {
+    return dt;
+  }
+  typedef Real type11;
+  inline Vec3 &getArg12()
+  {
+    return flameSmokeColor;
+  }
+  typedef Vec3 type12;
+  void runMessage()
+  {
+    debMsg("Executing kernel KnProcessBurn ", 3);
+    debMsg("Kernel range"
+               << " x " << maxX << " y " << maxY << " z " << minZ << " - " << maxZ << " ",
+           4);
+  };
+  void operator()(const tbb::blocked_range<IndexInt> &__r) const
+  {
+    const int _maxX = maxX;
+    const int _maxY = maxY;
+    if (maxZ > 1) {
+      for (int k = __r.begin(); k != (int)__r.end(); k++)
+        for (int j = 1; j < _maxY; j++)
+          for (int i = 1; i < _maxX; i++)
+            op(i,
+               j,
+               k,
+               fuel,
+               density,
+               react,
+               red,
+               green,
+               blue,
+               heat,
+               burningRate,
+               flameSmoke,
+               ignitionTemp,
+               maxTemp,
+               dt,
+               flameSmokeColor);
+    }
+    else {
+      const int k = 0;
+      for (int j = __r.begin(); j != (int)__r.end(); j++)
+        for (int i = 1; i < _maxX; i++)
+          op(i,
+             j,
+             k,
+             fuel,
+             density,
+             react,
+             red,
+             green,
+             blue,
+             heat,
+             burningRate,
+             flameSmoke,
+             ignitionTemp,
+             maxTemp,
+             dt,
+             flameSmokeColor);
+    }
+  }
+  void run()
+  {
+    if (maxZ > 1)
+      tbb::parallel_for(tbb::blocked_range<IndexInt>(minZ, maxZ), *this);
+    else
+      tbb::parallel_for(tbb::blocked_range<IndexInt>(1, maxY), *this);
+  }
+  Grid<Real> &fuel;
+  Grid<Real> &density;
+  Grid<Real> &react;
+  Grid<Real> *red;
+  Grid<Real> *green;
+  Grid<Real> *blue;
+  Grid<Real> *heat;
+  Real burningRate;
+  Real flameSmoke;
+  Real ignitionTemp;
+  Real maxTemp;
+  Real dt;
+  Vec3 flameSmokeColor;
+};
+
+void processBurn(Grid<Real> &fuel,
+                 Grid<Real> &density,
+                 Grid<Real> &react,
+                 Grid<Real> *red = NULL,
+                 Grid<Real> *green = NULL,
+                 Grid<Real> *blue = NULL,
+                 Grid<Real> *heat = NULL,
+                 Real burningRate = 0.75f,
+                 Real flameSmoke = 1.0f,
+                 Real ignitionTemp = 1.25f,
+                 Real maxTemp = 1.75f,
+                 Vec3 flameSmokeColor = Vec3(0.7f, 0.7f, 0.7f))
+{
+  Real dt = fuel.getParent()->getDt();
+  KnProcessBurn(fuel,
+                density,
+                react,
+                red,
+                green,
+                blue,
+                heat,
+                burningRate,
+                flameSmoke,
+                ignitionTemp,
+                maxTemp,
+                dt,
+                flameSmokeColor);
+}
+static PyObject *_W_0(PyObject *_self, PyObject *_linargs, PyObject *_kwds)
+{
+  try {
+    PbArgs _args(_linargs, _kwds);
+    FluidSolver *parent = _args.obtainParent();
+    bool noTiming = _args.getOpt<bool>("notiming", -1, 0);
+    pbPreparePlugin(parent, "processBurn", !noTiming);
+    PyObject *_retval = 0;
+    {
+      ArgLocker _lock;
+      Grid<Real> &fuel = *_args.getPtr<Grid<Real>>("fuel", 0, &_lock);
+      Grid<Real> &density = *_args.getPtr<Grid<Real>>("density", 1, &_lock);
+      Grid<Real> &react = *_args.getPtr<Grid<Real>>("react", 2, &_lock);
+      Grid<Real> *red = _args.getPtrOpt<Grid<Real>>("red", 3, NULL, &_lock);
+      Grid<Real> *green = _args.getPtrOpt<Grid<Real>>("green", 4, NULL, &_lock);
+      Grid<Real> *blue = _args.getPtrOpt<Grid<Real>>("blue", 5, NULL, &_lock);
+      Grid<Real> *heat = _args.getPtrOpt<Grid<Real>>("heat", 6, NULL, &_lock);
+      Real burningRate = _args.getOpt<Real>("burningRate", 7, 0.75f, &_lock);
+      Real flameSmoke = _args.getOpt<Real>("flameSmoke", 8, 1.0f, &_lock);
+      Real ignitionTemp = _args.getOpt<Real>("ignitionTemp", 9, 1.25f, &_lock);
+      Real maxTemp = _args.getOpt<Real>("maxTemp", 10, 1.75f, &_lock);
+      Vec3 flameSmokeColor = _args.getOpt<Vec3>(
+          "flameSmokeColor", 11, Vec3(0.7f, 0.7f, 0.7f), &_lock);
+      _retval = getPyNone();
+      processBurn(fuel,
+                  density,
+                  react,
+                  red,
+                  green,
+                  blue,
+                  heat,
+                  burningRate,
+                  flameSmoke,
+                  ignitionTemp,
+                  maxTemp,
+                  flameSmokeColor);
+      _args.check();
+    }
+    pbFinalizePlugin(parent, "processBurn", !noTiming);
+    return _retval;
+  }
+  catch (std::exception &e) {
+    pbSetError("processBurn", e.what());
+    return 0;
+  }
+}
+static const Pb::Register _RP_processBurn("", "processBurn", _W_0);
+extern "C" {
+void PbRegister_processBurn()
+{
+  KEEP_UNUSED(_RP_processBurn);
+}
+}
+
+struct KnUpdateFlame : public KernelBase {
+  KnUpdateFlame(const Grid<Real> &react, Grid<Real> &flame)
+      : KernelBase(&react, 1), react(react), flame(flame)
+  {
+    runMessage();
+    run();
+  }
+  inline void op(int i, int j, int k, const Grid<Real> &react, Grid<Real> &flame) const
+  {
+    if (react(i, j, k) > 0.0f)
+      flame(i, j, k) = pow(react(i, j, k), 0.5f);
+    else
+      flame(i, j, k) = 0.0f;
+  }
+  inline const Grid<Real> &getArg0()
+  {
+    return react;
+  }
+  typedef Grid<Real> type0;
+  inline Grid<Real> &getArg1()
+  {
+    return flame;
+  }
+  typedef Grid<Real> type1;
+  void runMessage()
+  {
+    debMsg("Executing kernel KnUpdateFlame ", 3);
+    debMsg("Kernel range"
+               << " x " << maxX << " y " << maxY << " z " << minZ << " - " << maxZ << " ",
+           4);
+  };
+  void operator()(const tbb::blocked_range<IndexInt> &__r) const
+  {
+    const int _maxX = maxX;
+    const int _maxY = maxY;
+    if (maxZ > 1) {
+      for (int k = __r.begin(); k != (int)__r.end(); k++)
+        for (int j = 1; j < _maxY; j++)
+          for (int i = 1; i < _maxX; i++)
+            op(i, j, k, react, flame);
+    }
+    else {
+      const int k = 0;
+      for (int j = __r.begin(); j != (int)__r.end(); j++)
+        for (int i = 1; i < _maxX; i++)
+          op(i, j, k, react, flame);
+    }
+  }
+  void run()
+  {
+    if (maxZ > 1)
+      tbb::parallel_for(tbb::blocked_range<IndexInt>(minZ, maxZ), *this);
+    else
+      tbb::parallel_for(tbb::blocked_range<IndexInt>(1, maxY), *this);
+  }
+  const Grid<Real> &react;
+  Grid<Real> &flame;
+};
+
+void updateFlame(const Grid<Real> &react, Grid<Real> &flame)
+{
+  KnUpdateFlame(react, flame);
+}
+static PyObject *_W_1(PyObject *_self, PyObject *_linargs, PyObject *_kwds)
+{
+  try {
+    PbArgs _args(_linargs, _kwds);
+    FluidSolver *parent = _args.obtainParent();
+    bool noTiming = _args.getOpt<bool>("notiming", -1, 0);
+    pbPreparePlugin(parent, "updateFlame", !noTiming);
+    PyObject *_retval = 0;
+    {
+      ArgLocker _lock;
+      const Grid<Real> &react = *_args.getPtr<Grid<Real>>("react", 0, &_lock);
+      Grid<Real> &flame = *_args.getPtr<Grid<Real>>("flame", 1, &_lock);
+      _retval = getPyNone();
+      updateFlame(react, flame);
+      _args.check();
+    }
+    pbFinalizePlugin(parent, "updateFlame", !noTiming);
+    return _retval;
+  }
+  catch (std::exception &e) {
+    pbSetError("updateFlame", e.what());
+    return 0;
+  }
+}
+static const Pb::Register _RP_updateFlame("", "updateFlame", _W_1);
+extern "C" {
+void PbRegister_updateFlame()
+{
+  KEEP_UNUSED(_RP_updateFlame);
+}
+}
+
+}  // namespace Manta