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Re: [Public WebGL] option for suggesting "low power" mode at context creation

On Sep 27, 2012, at 1:54 AM, Mark Callow <callow.mark@artspark.co.jp> wrote:

On 12/09/27 11:27, Florian Bösch wrote:

I don't think so. Dual GPU systems that can switch seamlessly are certainly somewhat of an oddity. It's certainly true that certain segments of the market will always aim for single GPU systems. However, if you want to combine very low power consumption but also powerful graphics in one system, dual GPU solutions will remain the solution for the forseeable future. The reason being that: 1) integrated graphics cannot compete performance wise with discrete graphics. This will always be true. 
2) Discrete graphics cannot yet work as power effectively as simple integrated graphics. It is likely this will remain so for a long time due to this being a hard thing to do.
3) The need to combine both low power graphics and high power graphics in one system will not vanish into thin air.
You are not giving the hardware designers much credit and nor apparently noticing the progress made by the latest low-power high-performance GPUs for mobile devices. I'm quite sure technologies for powering off unused parts of devices will migrate from CPUs to GPUs.

There is no "need to combine both low power graphics and high power graphics in one system." There *is* a need for high-performance graphics that consumes low power. The current dual-GPU solution is a hack. 

No matter how good, no hardware can consistently guess your preferences. Turning on a low power flag might ignore the anti-aliasing flag because it uses a lot of power. Or might not because the GPU can do it without much additional battery drain. There are many other features future GPUs could turn on or off to sacrifice performance or quality for the sake of battery life. I think a flag like this gives the author the ability to make some very mobile friendly content.



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