public override void OnUpdateSystem(bool rebuildSDF, RenderTexture sourceRT, RenderTexture boundRT)
{
if (!rebuildSDF)
{
return;
}
rts[READ] = sourceRT;
rts[WRITE] = anotherTex;
// clear list buffer
// resolutionX and resolutionY should be odd, otherwise it will cause symchronized problem
iterateListBuffer.SetCounterValue(0);
// kernel0: just need bound tex BOUND_TEX_IS_BOUNDARY, init grid val and surface grid val, build first queue, init complete tag
LevelSet2DFSMComputeShader.SetTexture(InitSDFKernel, "_BoundTex", boundRT);
LevelSet2DFSMComputeShader.SetTexture(InitSDFKernel, "_SDFRead", rts[READ]);
LevelSet2DFSMComputeShader.SetInt("_ResolutionX", resolutionX);
LevelSet2DFSMComputeShader.SetInt("_ResolutionY", resolutionY);
LevelSet2DFSMComputeShader.SetBuffer(InitSDFKernel, "_ItrateListBuffer", iterateListBuffer);
LevelSet2DFSMComputeShader.Dispatch(InitSDFKernel, resolutionX, resolutionY, 1);
for (int dilate = 0; dilate < dilateTime; ++dilate)
{
ComputeBuffer.CopyCount(iterateListBuffer, iterateListArgBuffer, 0);
iterateListBufferTo.SetCounterValue(0);
// kernel2: SweepingKernel, sweeping, build next queue
LevelSet2DFSMComputeShader.SetInt("_ResolutionX", resolutionX);
LevelSet2DFSMComputeShader.SetInt("_ResolutionY", resolutionY);
LevelSet2DFSMComputeShader.SetTexture(SweepingKernel, "_BoundTex", boundRT);
LevelSet2DFSMComputeShader.SetTexture(SweepingKernel, "_SDFRead", rts[READ]);
LevelSet2DFSMComputeShader.SetBuffer(SweepingKernel, "_ItrateListBufferNew", iterateListBufferTo);
LevelSet2DFSMComputeShader.SetBuffer(SweepingKernel, "_ItrateListBufferRead", iterateListBuffer);
LevelSet2DFSMComputeShader.DispatchIndirect(SweepingKernel, iterateListArgBuffer);
Liquid2DUtils.Swap(ref iterateListBuffer, ref iterateListBufferTo);
}
}
public override void OnUpdateSystem(bool rebuildSDF, RenderTexture sourceRT, RenderTexture boundRT)
{
if (!rebuildSDF)
{
return;
}
rts[READ] = sourceRT;
rts[WRITE] = anotherTex;
// clear list buffer
iterateListBuffer.SetCounterValue(0);
// kernel0: init bound texture and other buffers
LevelSet2DFIMComputeShader.SetTexture(BuildInitBoundTex, "_BoundTex", boundRT);
LevelSet2DFIMComputeShader.SetTexture(BuildInitBoundTex, "_SDFRead", rts[READ]);
LevelSet2DFIMComputeShader.SetInt("_ResolutionX", resolutionX);
LevelSet2DFIMComputeShader.SetInt("_ResolutionY", resolutionY);
LevelSet2DFIMComputeShader.Dispatch(BuildInitBoundTex, resolutionX, resolutionY, 1);
// kernel1: mark known point
LevelSet2DFIMComputeShader.SetTexture(MarkSurface, "_BoundTex", boundRT);
LevelSet2DFIMComputeShader.SetTexture(MarkSurface, "_SDFRead", rts[READ]);
LevelSet2DFIMComputeShader.SetInt("_ResolutionX", resolutionX);
LevelSet2DFIMComputeShader.SetInt("_ResolutionY", resolutionY);
LevelSet2DFIMComputeShader.Dispatch(MarkSurface, resolutionX, resolutionY, 1);
// kernel2: build first queue, copy read to write tex
LevelSet2DFIMComputeShader.SetBuffer(BuildFirstQueue, "_ItrateListBuffer", iterateListBuffer);
LevelSet2DFIMComputeShader.SetTexture(BuildFirstQueue, "_BoundTex", boundRT);
LevelSet2DFIMComputeShader.SetTexture(BuildFirstQueue, "_SDFRead", rts[READ]);
LevelSet2DFIMComputeShader.SetTexture(BuildFirstQueue, "_SDFWrite", rts[WRITE]);
LevelSet2DFIMComputeShader.SetInt("_ResolutionX", resolutionX);
LevelSet2DFIMComputeShader.SetInt("_ResolutionY", resolutionY);
LevelSet2DFIMComputeShader.Dispatch(BuildFirstQueue, resolutionX, resolutionY, 1);
// kernel3: debug queue
// LevelSet2DFMMStarComputeShader.SetBuffer(DebugKernel, "_ItrateListBufferRead", iterateListBuffer);
// LevelSet2DFMMStarComputeShader.SetTexture(DebugKernel, "_SDFWrite", rts[WRITE]);
// LevelSet2DFMMStarComputeShader.DispatchIndirect(DebugKernel, iterateListArgBuffer);
// loop:
// 1、 dispatchIndirect our list, calc SDF val due to BOUND_TEX_IS_KNOWN pixel, set BOUND_TEX_IS_KNOWN, build next list, generate next queue, swap listbuffer
for (int dilate = 0; dilate < dilateTime; ++dilate)
{
Liquid2DUtils.Swap(ref READ, ref WRITE);
// kernel4: FIMCopyKernel, copy read to write tex
LevelSet2DFIMComputeShader.SetTexture(FIMCopyKernel, "_SDFRead", rts[READ]);
LevelSet2DFIMComputeShader.SetTexture(FIMCopyKernel, "_SDFWrite", rts[WRITE]);
LevelSet2DFIMComputeShader.Dispatch(FIMCopyKernel, resolutionX + 2, resolutionY + 2, 1);
ComputeBuffer.CopyCount(iterateListBuffer, iterateListArgBuffer, 0);
iterateListBufferTo.SetCounterValue(0);
// kernel5: FIMLoopKernel, require blit between two textures
LevelSet2DFIMComputeShader.SetInt("_ResolutionX", resolutionX);
LevelSet2DFIMComputeShader.SetInt("_ResolutionY", resolutionY);
LevelSet2DFIMComputeShader.SetTexture(FIMLoopKernel, "_BoundTex", boundRT);
LevelSet2DFIMComputeShader.SetTexture(FIMLoopKernel, "_SDFRead", rts[READ]);
LevelSet2DFIMComputeShader.SetTexture(FIMLoopKernel, "_SDFWrite", rts[WRITE]);
LevelSet2DFIMComputeShader.SetBuffer(FIMLoopKernel, "_ItrateListBufferRead", iterateListBuffer);
LevelSet2DFIMComputeShader.SetBuffer(FIMLoopKernel, "_ItrateListBufferNew", iterateListBufferTo);
LevelSet2DFIMComputeShader.DispatchIndirect(FIMLoopKernel, iterateListArgBuffer);
ComputeBuffer.CopyCount(iterateListBufferTo, iterateListArgBufferTo, 0);
Liquid2DUtils.Swap(ref iterateListBuffer, ref iterateListBufferTo);
Liquid2DUtils.Swap(ref iterateListArgBuffer, ref iterateListArgBufferTo);
}
}