[1/3] wined3d: Constant load optimisations

[Norbert Lataille]

Hi,

I should add that my test system is a Linux Nvidia driver, and I don't have
any ATI available.
On this configuration, I do receive non negative location values for all
input uniforms (even if they are not used).
This may indeed vary depending on the target system.

Thanks,

2011/8/20 Stefan Dösinger <stefandoesinger at gmx.at>

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> Am 20.08.2011 um 22:28 schrieb Henri Verbeet:
>
> > On 20 August 2011 18:46, Norbert Lataille <nlataill at gmail.com> wrote:
> >> Performance gains (for parts 1/2/3) on WoW:
> >> http://norbert.lataille.free.fr/constants.html
> >> Results for 3dmark06, X3: http://norbert.lataille.free.fr/perf.html
> >> (line: Constants).
> >>
> > Do you have those in a reasonable format as well?
> The graphs are nice to click through them, but the plain numbers would be
> nice too. The difference looks roughly like the GLSL-ARB shader performance
> difference.
>
> My impression was that the drivers already set unused constants to -1.
> Sure, we declare all 256 constants, but unless indirect addressing is used
> the driver eliminates those that aren't read. Unfortunately I don't know
> which driver I used to test that, maybe it was OSX.
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