Write a CPlusPlus TOP

Overviewedit

Make sure you've read through Write a CPlusPlus Plugin first for general information about writing a plugin for a CPlusPlus TOP.

The CPlusPlus TOP allows you to write C++ code to create a TOP that can output multiple textures. Currently you can create your output by filling a CPU memory buffer (TOP_ExecuteMode::CPUMem) or by filling a cudaArray buffer (TOP_ExecuteMode::CUDA).

Most of the documentation is held in the header files for the C++ API. The samples also contain a lot of comments about the workflow.

For upgrading your CPlusPlus TOP compiled using headers from TouchDesigner builds before and including 2021.10000 to work in builds 2022.20000 and after, refer to CPlusPlus TOP Upgrades For 2022.20000 Builds

CUDAedit

The CPlusPlus TOP can be used with CUDA. See the CudaTOP example project included with the TouchDesigner installation for an example. Note that any CUDA operations that occur in your C++ code must occur on the main thread, between calls to OP_Context::beginCUDAOperations() and OP_Context::endCUDAOperations().

See Alsoedit

Write a CPlusPlus Plugin
Write a CPlusPlus CHOP
CPlusPlus TOP Upgrades For 2022.20000 Builds
CPlusPlus TOP
CPlusPlus CHOP