[jitter] Re: cc.uyvy2rgba.jxs and optimization

Might be be the code in the shader as well? I looked at the  
chromasmoothing portion of the code and noticed

	yuv_val.zy =  
mix(yvyu_left.yw,yuv_val.zy,vec2(coord_frak.x>=0.&&chromasmooth>0.5));

might the && operation cause issues on older cards? Im asking, as I  
simply dont know :)

Also, speaking of, how on earth does one reasonably derive supported  
options based on hardware/driver configurations?

Ive attempted to determine this occasionally and frankly it seems  
harder to find this out than just try different codepaths.


On Jan 7, 2008, at 12:18 PM, Joshua Kit Clayton wrote:

>
> On Jan 6, 2008, at 12:58 PM, Tyler Nitsch wrote:
>
>> Sorry kind of been preoccupied with other stuff.  In reference to  
>> the errors I was having with the cc.uyvy2rgba.jxs shader on my  
>> computer.  My gpu has had a couple of new drivers made so I thought  
>> to revisit this issue.  Still problems with the cc.uyvy2rgba.jxs  
>> shader but ya the cc.uyvy2rgba.lite.jxs program works.
>
> Thanks for the update. Sounds like it might be related to chroma  
> smoothing assumptions then. You might try sending the message "param  
> chromasmooth 0". Let us know if that works and we can try to figure  
> out what the issue might be.
>
> Thanks,
> Joshua_______________________________________________
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