OpenCL is cheating! (Or I'd like to support 10.5, in other words ;)
Vade: yeah, it's the multi-pass part that's giving me the headaches.
And the multiple render target requirement I've seen elsewhere (in
ATI's version for DX9 if I remember right). It's a tough one, but I'd
love to play around with FFT in QC, and I do have a serious use for it
too (doing a freeware astrophotography app, mostly using QC).
Chris
On 18 Sep 2009, at 01:33, George Toledo wrote:
I have an OpenCL Capable GPU, but I can't finish deleting the stock
code out of the OpenCL kernel before QC crashes (no Viewer running,
not hooked to a renderer, etc...)! :)
Will file bug.
-George Toledo
On Thu, Sep 17, 2009 at 8:20 PM, vade <[email protected]> wrote:
Ha Wikipedia has an Open CL FFT implementation on their main OpenCL
article:
http://en.wikipedia.org/wiki/OpenCL
Now if I had an OpenCL Capable GPU id try it out :)
On Sep 17, 2009, at 8:10 PM, Chris Wood wrote:
Here's a good challenge: fourier transform an image inside QC.
Preferably at decent speed. Including a quick filter of some sort,
and the inverse transform to get the image back.
Can it be done in any sane way? Anyone tried it?
The FFT methods I've come across so far involve multiple passes on
the image, and swapping between two buffers.. I guess this might
possibly be doable using a CI filter and a bit of javascript magic
in the filter function. They also seem to need two output channels
for each input, which could be more of an issue.
The other option is to write a plugin, but that would be seriously
stretching my openGL skills a bit too far :)
Chris
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