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Welcome to Fractal Forums > Fractal Software > 3D Fractal Generation > DOF a single threaded task by fate?
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Author Topic: DOF a single threaded task by fate?  (Read 4077 times)
Description: why does depth of field calculation only use one core?
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taurus
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« on: December 14, 2011, 10:57:28 PM »
i noticed, that mb3d, mandelbulber and even my good old c4d 11.5 are rendering the depth of field effect only on one core. as an owner of an amd machine, that's quite disappointing, 'cause my puter is not good at calculating single threaded programs.  sad

so my question is: do i have to to take this fact as a given one, or might it be possible to render dof effects on more than one thread?
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Jesse
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« Reply #1 on: December 15, 2011, 06:00:20 PM »
If you spend some overlap in the processed image region for each thread, related to the maximum blur radius, you could seperate it in several threads.  It is on the list for m3d, if i have more time.
Depends a bit on the specific calculation method, if you don't need to sort the pixel on Z buffer depth values, it should be even easier to do because each thread could read from the same copy of the image...
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taurus
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« Reply #2 on: December 16, 2011, 11:46:28 AM »
thanks jesse, nice to hear that it's possible and that it is already on your list. i can understand, that this is not a priority target.  bubble gum
it's sometimes a bit anoying especially on bigger renders, when the dof calculation needs longer than all the rest.
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