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On 12/18/2011 12:34 PM, Walter Dnes wrote: |
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> On Sat, Dec 17, 2011 at 08:10:54PM -0500, Walter Dnes wrote |
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> |
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>> The onboard GPU was initially incapable of handling 1080i video without |
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>> stuttering badly and dropping frames. After explicitly changing the |
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>> flags and rebuilding system+world+kernel, it displays 1080p videos |
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>> flawlessly. That's one big "co-incidence". |
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> |
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> This was only recently installed. Is it possible that the generic x86 |
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> code from the initial install was the problem? And that emerging |
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> system+world got me full optimization? |
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Could be. It could also be it's because of "-mfpmath=sse". That's only |
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used by default on 64-bit. On 32-bit, the FPU is used for floating |
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point operations by default, which gives better precision (80 bit vs 64 |
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bit) but slower speed. |
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|
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But then again, that sounds too much of a performance difference. So if |
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I had to guess, I'd say it's because of the world rebuild that made sure |
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everything was built with proper optimizations. |
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