private int GetKernelLod(MeshSubdivision meshSubd)
{
if (_meshSubdCS == null)
{
return(-1);
}
string kernelName = "KernelLod";
if (meshSubd.SubdInterp == SubdInterp.PnTriangle)
{
kernelName += "PnTriangle";
}
else if (meshSubd.SubdInterp == SubdInterp.PhongTessellation)
{
kernelName += "PhongTess";
}
if (meshSubd.EnableCulling)
{
kernelName += "Culling";
}
return(_meshSubdCS.FindKernel(kernelName));
}
private void ExecuteKernelLod(CommandBuffer cmd, Camera camera, MeshSubdivision meshSubd)
{
int kernel = GetKernelLod(meshSubd);
if (kernel == -1)
{
return;
}
var bufferIndex = MeshSubdivisionFeature.ToBufferIndex(camera.cameraType);
var buffers = meshSubd.BuffersList[bufferIndex];
bool ping = buffers.Ping;
bool pong = buffers.Pong;
var argsOffsets = new int[] { ping ? 0 : 1, pong ? 0 : 1, 2, 3, };
var lodParameters = meshSubd.BuildLodParameters(camera);
var cameraPosition = camera.transform.position;
var frustumPlanes = meshSubd.BuildFrustumPlanes(camera);
var viewProjMatrix = CalculateViewProjMatrix(camera);
var objectToWorldMatrix = meshSubd.transform.localToWorldMatrix;
var vertexBuffer = buffers.VertexBuffer;
var indexBuffer = buffers.IndexBuffer;
var argsBuffer = buffers.IndirectArgumentBuffer;
var inSubdBuffer = buffers.InSubdivisionBuffer;
var outSubdBuffer = buffers.OutSubdivisionBuffer;
var cullBuffer = buffers.CulledIndexBuffer;
cmd.SetComputeIntParams(_meshSubdCS, ShaderIDs._ArgsOffsets, argsOffsets);
cmd.SetComputeVectorParam(_meshSubdCS, ShaderIDs._LodParameters, lodParameters);
cmd.SetComputeVectorParam(_meshSubdCS, ShaderIDs._WorldSpaceCameraPos, cameraPosition);
cmd.SetComputeVectorArrayParam(_meshSubdCS, ShaderIDs._FrustumPlanes, frustumPlanes);
cmd.SetComputeMatrixParam(_meshSubdCS, ShaderIDs._ViewProjMatrix, viewProjMatrix);
cmd.SetComputeMatrixParam(_meshSubdCS, ShaderIDs._ObjectToWorldMatrix, objectToWorldMatrix);
cmd.SetComputeBufferParam(_meshSubdCS, kernel, ShaderIDs._VertexBuffer, vertexBuffer);
cmd.SetComputeBufferParam(_meshSubdCS, kernel, ShaderIDs._IndexBuffer, indexBuffer);
cmd.SetComputeBufferParam(_meshSubdCS, kernel, ShaderIDs._RWIndirectArgsBuffer, argsBuffer);
cmd.SetComputeBufferParam(_meshSubdCS, kernel, ShaderIDs._RWSubdivision0Buffer, inSubdBuffer);
cmd.SetComputeBufferParam(_meshSubdCS, kernel, ShaderIDs._RWSubdivision1Buffer, outSubdBuffer);
cmd.SetComputeBufferParam(_meshSubdCS, kernel, ShaderIDs._RWCulledIndexBuffer, cullBuffer);
cmd.DispatchCompute(_meshSubdCS, kernel, argsBuffer, (uint)argsOffsets[0] * 16);
}
private int GetKernelIndirectBatcher(MeshSubdivision meshSubd)
{
if (_meshSubdCS == null)
{
return(-1);
}
string kernelName = "KernelIndirectBatcher";
if (meshSubd.EnableCulling)
{
kernelName += "Culling";
}
return(_meshSubdCS.FindKernel(kernelName));
}
public static void Unregister(MeshSubdivision comp)
{
sComponentList.Remove(comp);
}
public static void Register(MeshSubdivision comp)
{
sComponentList.Add(comp);
}
private void ExecuteKernelIndirectBatcher(CommandBuffer cmd, Camera camera, MeshSubdivision meshSubd)
{
int kernel = GetKernelIndirectBatcher(meshSubd);
if (kernel == -1)
{
return;
}
var bufferIndex = MeshSubdivisionFeature.ToBufferIndex(camera.cameraType);
var buffers = meshSubd.BuffersList[bufferIndex];
bool ping = buffers.Ping;
bool pong = buffers.Pong;
var argsOffsets = new int[] { ping ? 0 : 1, pong ? 0 : 1, 2, 3 };
var argsBuffer = buffers.IndirectArgumentBuffer;
var inSubdBuffer = buffers.InSubdivisionBuffer;
var outSubdBuffer = buffers.OutSubdivisionBuffer;
var cullBuffer = buffers.CulledIndexBuffer;
cmd.SetComputeIntParams(_meshSubdCS, ShaderIDs._ArgsOffsets, argsOffsets);
cmd.SetComputeBufferParam(_meshSubdCS, kernel, ShaderIDs._RWIndirectArgsBuffer, argsBuffer);
cmd.SetComputeBufferParam(_meshSubdCS, kernel, ShaderIDs._RWSubdivision0Buffer, inSubdBuffer);
cmd.SetComputeBufferParam(_meshSubdCS, kernel, ShaderIDs._RWSubdivision1Buffer, outSubdBuffer);
cmd.SetComputeBufferParam(_meshSubdCS, kernel, ShaderIDs._RWCulledIndexBuffer, cullBuffer);
cmd.DispatchCompute(_meshSubdCS, kernel, 1, 1, 1);
}
