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public void DispatchIndirect (int kernelIndex, ComputeBuffer argsBuffer, uint argsOffset= 0);


kernelIndex Which kernel to execute. A single compute shader asset can have multiple kernel entry points.
argsBuffer Buffer with dispatch arguments.
argsOffset Byte offset where in the buffer the dispatch arguments are.


Execute a compute shader.

This function "runs" the compute shader, with the given work size read directly from the GPU. Typical use case is generating arbitrary amount of data from a ComputeShader and then dispatching that, without requiring a readback to the CPU.

Buffer with arguments, argsBuffer, has to have three integer numbers at given argsOffset offset: number of work groups in X dimension, number of work groups in Y dimension, number of work groups in Z dimension.

Within each work group, a number of shader invocations ("threads") are done. The work group size is specified in the compute shader itself (using "numthreads" HLSL attribute), and the total amount of compute shader invocations is thus group count multiplied by the thread group size. Work group size can be queried using GetKernelThreadGroupSizes function.

This very much maps to Direct3D11 DispatchIndirect / OpenGL ES 3.1 glDispatchComputeIndirect function

See Also: Dispatch, Graphics.DrawProceduralIndirect, ComputeBuffer.CopyCount, Compute Shaders.