sceDisplaySetBrightness small bug (not really a bug)

[Torch]

When using sceDisplaySetBrightness in the XMB, suppose the screen gets dimmed due to idling, then you press a button and when the screen becomes bright, it goes back to the ORIGINAL brightness before you called sceDisplaySetBrightness instead of the value you have set.

I'm assuming its because the kernel is keeping track of the current brightness in its own variable and that variable doesn't get updated when you call sceDisplaySetBrightness. Hence when the brightness needs to be set again such as after idle, it goes back to the old value.

Is there any way to update the kernel's variable or whatever with the new value after you call sceDisplaySetBrightness?

[angelo]

What's your function?

[Torch]

Suppose current brightness is 100.
I call sceDisplaySetBrightness(50,0);
The brightness gets changed to 50.

After idling for a while, the screen gets dimmed automatically (or shutoff if longer, doesn't matter).

When I press a key, the screen goes back to 100.

[angelo]

Do a loop so that it's refreshed every 1000 milliseconds.

The screen will automaticly shutdown with sceDisplayDisable so after a couple of minutes so the battery won't die.

You could also stop the PSP from going into sleep mode with

scePowerTick();

Any help or am I giving you less than helpfull answers? I get the feeling I'm not helping!

Angelo

[Torch]

its for my hold+ plugin. the brightness will be changed by the system in any case. even after auto shut off when you turn it on again.

[sakya]

Hi! :)

Do you change the brightness only with sceDisplaySetBrightness?

When the psp awake from the sleep it uses the value 0,1,2,3,4 and not the real brightness value (0-100).

I think you shoul use also this when changing the brightness value (50 should be 2, I think):

Code: Select all

sceImposeSetParam(PSP_IMPOSE_BACKLIGHT_BRIGHTNESS, value);

Ciaooo
Sakya

[PosX100]

Hi! :)

Do you change the brightness only with sceDisplaySetBrightness?

When the psp awake from the sleep it uses the value 0,1,2,3,4 and not the real brightness value (0-100).

I think you shoul use also this when changing the brightness value (50 should be 2, I think):

Code: Select all

sceImposeSetParam(PSP_IMPOSE_BACKLIGHT_BRIGHTNESS, value);

Ciaooo
Sakya

Just to add an idea for the proper value...

100(max brightness level) / 4(total values) = 25, so , we have:

Level / brightness

0: probably off?
1=> 25 (x1)
2=> 50 (x2)
3=> 75 (x3)
4=> 100 (x4)

[Torch]

That only works when the XMB is running.