01a2ab603c
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100 lines
4.0 KiB
C
100 lines
4.0 KiB
C
#include <immintrin.h>
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#include <stdint.h>
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#include <math.h>
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#include "fluid/env/utilities.h"
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#include "fluid/queue/chunkmask.h"
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#include "fluid/queue/metadatacalc.h"
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#define UPDATE_THRESHOLD 0.1
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/**
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* Updates the metadata for all chunks
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* @param env The java environment variable
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* @param numChunks The number of chunks
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* @param passedInChunks The chunks that were passed in
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* @param environment The environment data
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*/
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void updateMetadata(JNIEnv * env, int numChunks, Chunk ** passedInChunks, Environment * environment){
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jfieldID totalDensityId = environment->lookupTable.serverFluidChunkTable.totalDensityId;
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jfieldID updatedId = environment->lookupTable.serverFluidChunkTable.updatedId;
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int N = DIM;
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int i;
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int x, y, z;
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for(i = 0; i < numChunks; i++){
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//get previous total density
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Chunk * currentChunk = passedInChunks[i];
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jobject jObj = currentChunk->chunkJRaw;
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float prevDensity = (*env)->GetFloatField(env,jObj,totalDensityId);
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//calculate new total density
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//transform u direction
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float sum = 0;
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for(y=1; y<N-1; y++){
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for(z=1; z<N-1; z++){
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int n = 0;
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//solve as much as possible vectorized
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for(x = 1; x < N-1; x=x+8){
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sum = sum + GET_ARR_RAW(currentChunk->d,CENTER_LOC)[IX(x,y,z)];
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}
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}
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}
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//get whether the chunk is currently homogenous or not
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int homogenous = sum <= 0 ? JNI_TRUE : JNI_FALSE;
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// (*env)->SetBooleanField(env,jObj,environment->lookupTable.serverFluidChunkTable.homogenousId,homogenous);
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(*env)->SetBooleanField(env,jObj,environment->lookupTable.serverFluidChunkTable.homogenousId,JNI_FALSE);
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//update total density
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(*env)->SetFloatField(env,jObj,totalDensityId,sum);
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//check if any neighbor is non-homogenous
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// jobject neighborArr = (*env)->GetObjectField(env,jObj,environment->lookupTable.serverFluidChunkTable.neighborsId);
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// int nonHomogenousNeighbor = JNI_FALSE;
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// for(int j = 0; j < NEIGHBOR_ARRAY_COUNT; j++){
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// if(j == CENTER_LOC){
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// continue;
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// }
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// jobject neighborObj = (*env)->GetObjectArrayElement(env,neighborArr,j);
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// if(neighborObj != NULL){
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// int neighborHomogenous = (*env)->GetBooleanField(env,neighborObj,environment->lookupTable.serverFluidChunkTable.homogenousId);
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// if(neighborHomogenous == JNI_FALSE){
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// nonHomogenousNeighbor = JNI_TRUE;
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// break;
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// }
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// }
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// }
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//figure out if this chunk should sleep or not
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int shouldSleep = JNI_TRUE;
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// if(nonHomogenousNeighbor == JNI_TRUE || homogenous == JNI_FALSE){
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shouldSleep = JNI_FALSE;
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// }
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(*env)->SetBooleanField(env,jObj,environment->lookupTable.serverFluidChunkTable.asleepId,shouldSleep);
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//if this cell is awake AND non-homogenous, make sure all neighbors are awake
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// if(shouldSleep == JNI_FALSE && homogenous == JNI_FALSE){
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(*env)->SetBooleanField(env,jObj,updatedId,JNI_TRUE);
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// for(int j = 0; j < NEIGHBOR_ARRAY_COUNT; j++){
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// if(j == CENTER_LOC){
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// continue;
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// }
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// jobject neighborObj = (*env)->GetObjectArrayElement(env,neighborArr,j);
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// if(neighborObj != NULL){
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// (*env)->SetBooleanField(env,neighborObj,environment->lookupTable.serverFluidChunkTable.asleepId,JNI_FALSE);
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// }
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// }
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// }
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}
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//alert java side to updated static values
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float normalizationRatio = environment->state.normalizationRatio;
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(*env)->SetStaticFloatField(env,environment->lookupTable.serverFluidChunkClass,environment->lookupTable.serverFluidChunkTable.normalizationRatioId,normalizationRatio);
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//update frame state
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environment->state.frame += 1;
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}
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