GPU Pro 7

2. Interactive Sparse Eulerian Fluid 285

Inject

Advect

Pressure

Vorticity

Evolve*

Clear tiles Fill list

Figure 2.6. A chronological flow diagram showing the various stages of sparse simula-

tion. Note the addition of new stages in blue—compare to Figure 2.1.

Texture3D<uint> g_BrickMapRO : register ( t0 );

AppendStructredBuffer<uint4> g_ListRW : register ( u0 );

[ numthreads (8 , 4 , 4) ]

void main ( uint3 idx : SV_DispatchThreadID )

{

if( g_BrickMapRO [ idx ]!=0)

{

g_ListRW . Append( idx );

}

}

Listing 2.6. A compute shader to create a linear list of bricks to be included in the

sparse simulation domain.

simulation steps, inject, advect, pressure, and vorticity—whic ...