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OpenCL vs. DirectCompute?

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I'm looking for comparisons between OpenCL and DirectCompute, but I haven't found anything. OpenCL's advantages of being cross-platform and having a wider range of supported GPUs don't matter to me. I'm fine with coding on Windows against DX11 GPUs only. Assuming that, what are the pros and cons of each API?

I know this question was raised before, but I'm looking for more details.

I'm not interested in CUDA, since I don't want to restrict myself to only Nvidia hardware.

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royco Avatar asked Jul 03 '10 17:07

royco

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2 Answers

Probably the biggest difference for a coder is that DirectCompute is programmed by a language which is similar to HLSL, and OpenCL is programmed via a C-like language.

Another difference to consider is that, generally, for commodity level GPUs, the DirectX support is better (faster and less buggy) than OpenGL support on Windows. This may translate to more stable support for DirectCompute, but really, this is just speculation.

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codekaizen Avatar answered Sep 19 '22 09:09

codekaizen

Well the major advantage of OpenCL is that it is not just limited to graphics cards. You can make use of your multicore CPU, Graphics Card and potentially any number of other hardware acceleration devices (DSPs etc) all from the same program.

I'm not sure if DirectCompute allows that freedom.

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Cromulent Avatar answered Sep 19 '22 09:09

Cromulent
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