StableFluid error on Unity2019. #4

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1. wonkee-kim commented on Oct 16, 2019

   

   wonkee-kim

   on Oct 16, 2019

   Author

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   But after fixing those things, there is a weird horizontal artefact for the fluid simulation.
   I am having look at it and once I solve the problem, I will share it as well.
2. lkewis commented on Oct 4, 2021

   

   lkewis

   on Oct 4, 2021

   Last edited by lkewis

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   Not sure if you already fixed this, but adding *-0.5 ** before the sampling in ProjectStep2 seems to have fixed it (same as ProjectStep1):

   `[numthreads(THREAD_X, THREAD_Y, THREAD_Z)]
   void ProjectStep2 (uint2 id : SV_DispatchThreadID)
   {
   uint w, h;
   velocity.GetDimensions(w, h);

   if (id.x < w && id.y < h)
   {
       [unroll]
       for (int k = 0; k < GS_ITERATE; k++)
       {
           prev[id] = float3(
                   -0.5 *
                   (prev[id].y + prev[uint2(id.x - 1, id.y)].x +
                                 prev[uint2(id.x + 1, id.y)].x +
                                 prev[uint2(id.x, id.y - 1)].x +
                                 prev[uint2(id.x, id.y + 1)].x) / 4,
                   prev[id].yz);
           SetBoundaryDivPositive(id, w, h);
       }
   }
   

   }`