[Bf-committers] Antw.: Is Cycles going to support OpenCL 1.0 ?

johannes amorosa johannes.amorosa at googlemail.com
Thu Dec 8 13:43:08 CET 2011

I'm always impressed how people can demand support for there purpose. I
have the feeling some forget that blender is an opensource project. If I
think it should
go in my prefered direction, than I would sit down and write a patch for it.
TY for bringing us cycles and all the new features for free. If it is
important then I would
think I would be able to go to the store and buy myself a cuda based
card for under
100 EUR or start programing.
My 2 cents.

On 8 December 2011 12:43, Antony Riakiotakis <kalast at gmail.com> wrote:

> On 8 December 2011 13:06, Thomas Dinges <blender at dingto.org> wrote:
> > Well, I don't think we need to discuss that. AMD 4xxx cards were not
> designed for OpenCL, the support was added later via driver. It's the same
> on nvidia, the Femi cards were the first, designed for CUDA.
> >
> > The fault is therefore not on our side and discussions won't solve it. ;)
> >
> This is hardly a good reply. Of course OpenCL support is added through
> the driver, hardware simply executes opcodes. The support was added
> after all, so people still expect to be able to use it. A discussion
> will make people understand so it solves any suspicions of bias. My
> understanding is that certain features or extensions either run on
> software or are missing. If people can know them though, and know
> their importance they can be more understanding. And more importantly,
> they can stop feeling that the developers are biased towards NVIDIA.
> Anyways, here are some references:
> http://developer.amd.com/sdks/AMDAPPSDK/pages/DriverCompatibility.aspx,
> where you can clearly see that GPUs have beta OpenCL support
> (unfortunately couldn't find the conformance results)
> http://developer.amd.com/sdks/AMDAPPSDK/assets/AMD_Accelerated_Parallel_Processing_OpenCL_Programming_Guide.pdf
> ,
> where, if you check under AppendixD the lowest GPUs mentioned are
> series 5.
> http://developer.amd.com/sdks/AMDAPPSDK/assets/AMD_APP_SDK_Getting_Started_Guide_v2.4.pdf
> check section 5 supported devices, where all the features supported
> are enumerated.
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johannes amorosa
twitter: jamorosa

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