border diffusion test

src/main/c/src/CMakeLists.txt

@@ -21,7 +21,7 @@ target_include_directories(StormEngine PUBLIC ${PROJECT_SOURCE_DIR}/src/main/c/i
 target_include_directories(StormEngine PUBLIC ${PROJECT_SOURCE_DIR}/src/main/c/lib)
 
 # set props for the lib
-target_compile_options(StormEngine PRIVATE -m64 -mavx -mavx2 -save-temps)
+target_compile_options(StormEngine PRIVATE -m64 -mavx -mavx2)
 
 
 if (WIN32)

src/main/c/src/fluid/sim/grid2/grid2.c

@@ -71,7 +71,17 @@ LIBRARY_API void fluid_grid2_simulate(
         fluid_grid2_flip_arrays(currentChunk->w,currentChunk->w0);
 
         //solve vector diffusion
-        fluid_grid2_solveVectorDiffuse(environment,currentChunk->u,currentChunk->v,currentChunk->w,currentChunk->u0,currentChunk->v0,currentChunk->w0,timestep);
+        fluid_grid2_solveVectorDiffuse(
+            environment,
+            currentChunk->u,
+            currentChunk->v,
+            currentChunk->w,
+            currentChunk->u0,
+            currentChunk->v0,
+            currentChunk->w0,
+            timestep
+        );
+        
     // }
 
     // //time tracking
@@ -85,8 +95,17 @@ LIBRARY_API void fluid_grid2_simulate(
     //     Chunk * currentChunk = chunks[i];
     //     //update the bounds arrays
     //     fluid_grid2_rewrite_bounds(currentChunk);
+
         // setup projection
-        fluid_grid2_setupProjection(environment,currentChunk->u,currentChunk->v,currentChunk->w,currentChunk->u0,currentChunk->v0,timestep);
+        fluid_grid2_setupProjection(
+            environment,
+            currentChunk->u,
+            currentChunk->v,
+            currentChunk->w,
+            currentChunk->u0,
+            currentChunk->v0,
+            timestep
+        );
 
         //
         //Perform main projection solver
@@ -99,6 +118,7 @@ LIBRARY_API void fluid_grid2_simulate(
         fluid_grid2_flip_arrays(currentChunk->u,currentChunk->u0);
         fluid_grid2_flip_arrays(currentChunk->v,currentChunk->v0);
         fluid_grid2_flip_arrays(currentChunk->w,currentChunk->w0);
+
     // }
 
     // //time tracking
@@ -113,6 +133,7 @@ LIBRARY_API void fluid_grid2_simulate(
     //     Chunk * currentChunk = chunks[i];
     //     //update the bounds arrays
     //     fluid_grid2_rewrite_bounds(currentChunk);
+    
         // advect
         fluid_grid2_advectVectors(environment,currentChunk->u,currentChunk->v,currentChunk->w,currentChunk->u0,currentChunk->v0,currentChunk->w0,timestep);
 
@@ -129,6 +150,7 @@ LIBRARY_API void fluid_grid2_simulate(
     //     Chunk * currentChunk = chunks[i];
     //     //update the bounds arrays
     //     fluid_grid2_rewrite_bounds(currentChunk);
+
         //setup projection
         fluid_grid2_setupProjection(environment,currentChunk->u,currentChunk->v,currentChunk->w,currentChunk->u0,currentChunk->v0,timestep);
         //Perform main projection solver
@@ -164,7 +186,7 @@ LIBRARY_API void fluid_grid2_simulate(
         Chunk * currentChunk = chunks[i];
         //update the bounds arrays
         fluid_grid2_rewrite_bounds(environment, currentChunk);
-
+        //add density
         fluid_grid2_addDensity(environment,currentChunk->d,currentChunk->d0,timestep);
         environment->state.existingDensity = environment->state.existingDensity + fluid_grid2_calculateSum(currentChunk->d);
         //swap all density arrays
@@ -173,19 +195,23 @@ LIBRARY_API void fluid_grid2_simulate(
         fluid_grid2_solveDiffuseDensity(environment,currentChunk->d,currentChunk->d0,timestep);
         //swap all density arrays
         fluid_grid2_flip_arrays(currentChunk->d,currentChunk->d0);
-    }
 
-    //time tracking
-    gettimeofday(&tv,NULL);
-    end = 1000000.0 * tv.tv_sec + tv.tv_usec;
-    perMilli = (end - start) / 1000.0f;
-    environment->state.timeTracking.densityDiffuse = perMilli;
-    start = end;
+        
+    // }
+
+    // //time tracking
+    // gettimeofday(&tv,NULL);
+    // end = 1000000.0 * tv.tv_sec + tv.tv_usec;
+    // perMilli = (end - start) / 1000.0f;
+    // environment->state.timeTracking.densityDiffuse = perMilli;
+    // start = end;
     
-    for(int i = 0; i < numChunks; i++){
-        Chunk * currentChunk = chunks[i];
-        //update the bounds arrays
-        fluid_grid2_rewrite_bounds(environment, currentChunk);
+    // for(int i = 0; i < numChunks; i++){
+    //     Chunk * currentChunk = chunks[i];
+    //     //update the bounds arrays
+    //     fluid_grid2_rewrite_bounds(environment, currentChunk);
+
+
         //advect density
         fluid_grid2_advectDensity(environment,currentChunk->d,currentChunk->d0,currentChunk->u,currentChunk->v,currentChunk->w,timestep);
     }

src/test/c/fluid/sim/grid2/border_diffusion_tests.c

@@ -0,0 +1,107 @@
+#include <math.h>
+
+#include "stb/stb_ds.h"
+
+#include "fluid/queue/boundsolver.h"
+#include "fluid/queue/chunkmask.h"
+#include "fluid/queue/chunk.h"
+#include "fluid/env/environment.h"
+#include "fluid/env/utilities.h"
+#include "fluid/sim/grid2/density.h"
+#include "fluid/sim/grid2/grid2.h"
+#include "fluid/sim/grid2/solver_consts.h"
+#include "fluid/sim/grid2/utilities.h"
+#include "fluid/sim/grid2/velocity.h"
+#include "math/ode/multigrid.h"
+#include "../../../util/chunk_test_utils.h"
+#include "../../../util/test.h"
+
+/**
+ * Center of the advection cell
+ */
+#define FLUID_GRID2_PROJECTION_CELL_CENTER 24
+
+/**
+ * Error margin for tests
+ */
+#define FLUID_GRID2_PROJECTION_ERROR_MARGIN 0.00001f
+
+/**
+ * Testing full sim routine
+ */
+int fluid_sim_grid2_border_diffusion_test1(){
+    printf("fluid_sim_grid2_border_diffusion_test1\n");
+    int rVal = 0;
+    Environment * env = fluid_environment_create();
+    Chunk ** queue = NULL;
+    queue = createChunkGrid(env,3,3,3);
+    int chunkCount = arrlen(queue);
+
+
+
+    //setup chunk values
+    queue[0]->d0[CENTER_LOC][IX(DIM-2,1,DIM-2)] = MAX_FLUID_VALUE; //this should immediately bleed into the [0 0 1] chunk
+
+    //set bounds according to neighbors
+    fluid_solve_bounds(chunkCount,queue,env);
+
+    //test the result
+    float neighboreVal = queue[1]->d0[CENTER_LOC][IX(DIM-2,1,0)];
+    if(neighboreVal != MAX_FLUID_VALUE){
+        rVal += assertEqualsFloat(MAX_FLUID_VALUE,neighboreVal,"Simulation did not properly add density! expected: %f     actual: %f  \n");
+    }
+
+    return rVal;
+}
+
+/**
+ * Testing full sim routine
+ */
+int fluid_sim_grid2_border_diffusion_test2(){
+    printf("fluid_sim_grid2_border_diffusion_test2\n");
+    int rVal = 0;
+    Environment * env = fluid_environment_create();
+    Chunk ** queue = NULL;
+    queue = createChunkGrid(env,3,3,3);
+    int chunkCount = arrlen(queue);
+
+
+
+    //setup chunk values
+    queue[0]->d0[CENTER_LOC][IX(DIM-2,1,DIM-2)] = MAX_FLUID_VALUE; //this should immediately bleed into the [0 0 1] chunk
+
+    //set bounds according to neighbors
+    fluid_solve_bounds(chunkCount,queue,env);
+    fluid_grid2_simulate(chunkCount,queue,env,FLUID_GRID2_SIM_STEP);
+    fluid_solve_bounds(chunkCount,queue,env);
+
+    //test the result
+    float newVal = queue[0]->d[CENTER_LOC][IX(DIM-2,1,DIM-2)];
+    float originDiff = MAX_FLUID_VALUE - newVal;
+
+    float neighboreVal = queue[1]->d[CENTER_LOC][IX(DIM-2,1,0)];
+    float neighborDiff = MAX_FLUID_VALUE - neighboreVal;
+    if(originDiff != neighborDiff){
+        printf("Failed to set bounds after simulation! \n");
+        printf("neighborVal: %f  \n", neighboreVal);
+        printf("neighborDiff: %f  \n", neighborDiff);
+        printf("newVal: %f  \n", newVal);
+        printf("originDiff: %f  \n", originDiff);
+        printf("\n");
+        rVal++;
+    }
+
+    return rVal;
+}
+
+/**
+ * Testing full sim routines
+ */
+int fluid_sim_grid2_border_diffusion_tests(int argc, char **argv){
+    int rVal = 0;
+
+    rVal += fluid_sim_grid2_border_diffusion_test1();
+    rVal += fluid_sim_grid2_border_diffusion_test2();
+
+    return rVal;
+}