Hello,

Ah good that sounds more promising. I was just wondering myself why the Jiggle 
is Purple.

Im also getting somewhere with fixing the broken mesh filters.

They can be edited by finding them in /System/Library/Compositions

Im just looking at the two OpenCL Kernel patches in Mesh Noise and they give 
errors because attenuation is set to be a constant but one line is trying to 
change attenuation by clamping it. Crudely working round this by removing that 
line in both patches causes the Mesh Noise to jump into life. Someone that has 
a clue about programming will have to decide whether this is a bug with OpenCL 
or actually a bugfix which has caused poor code in these particular patches to 
fail.

Whilst writing this email I had a very quick look at Mesh Bulge and I think its 
the same story - the OpenCL kernel patch now picks up on more attempts to 
assign stuff to read-only variables and so the patch doesnt run.

Cheers

Steve Elbows

On 31 Mar 2010, at 17:31, vade wrote:

> Nice catch
> 
> That does indeed work. It may have been the specific filter I was testing. I 
> tend to ignore the templates. 
> 
> So, in short, 
> 
> Mac Book Pro 2.33 Ghz - ATI X1600 sans OpenCL capability:
> 
> Works:
>       Mesh Template shows proper output and renders a sin-wave distorted 
> sphere. (the default when opening a new Mesh Filter Template)
> 
>       Mesh Twist Filter
>       Mesh Wave
>       Mesh Bulge
>       Mesh Jiggle (although it shows up as a Provider - ie Purple - ) and 
> acts a bit odd, but it does render.
> 
> Fails:
>       Mesh Bend
>       Mesh Noise
> 
>        
> Of course, the two that I tested earlier were Bend and Noise. I will update 
> my Bug Report with this info. Thanks for the prod. This is interesting and 
> good to know OpenCL works muuuccch better than 10.6.2 (those patches, all of 
> them, used to crash QC for me).
> 
> 
> On Mar 31, 2010, at 12:18 PM, Steven Watkins wrote:
> 
>> Oh dear, that doesnt sound good. What GPU is in your machine? Perhaps there 
>> are certain hardware combinations that CPU fallback still fails on, Ive been 
>> testing non-GPU OpenCL on a 2008 Mac Pro with a Radeon HD 2600.
>> 
>> So when you click on Mesh Filter in the template startup window, you dont 
>> even get a preview that shows a mesh  being wave deformed? Thats the most 
>> basic test I can think of without posting a composition.
>> 
>> Cheers
>> 
>> Steve
>> 
>> On 31 Mar 2010, at 15:07, vade wrote:
>> 
>>> Do we? I do not have that OpenCL support on my GPU, and mesh filters fail 
>>> miserably. Do you have a specific example? I am unsure what if anything 
>>> OpenCL should work on my hardware to be honest - I imagine OpenCL on CPU 
>>> should but at this point... ha :)
>>> 
>>> On Mar 30, 2010, at 6:32 PM, Steven Watkins wrote:
>>> 
>>>> We get the fix that 10.6.2 first offered for the bug that prevented QC 
>>>> OpenCL from falling back to CPU if no suitable GPU found, 
>>> 
>> 
> 
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