Abnormal slowdown with the game Bleach Blade Battler 2nd.

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I finally know that the "abnormal" slow down in Bleach blade blatter is 
caused on the GS thread.

I call it abnormal because the game goes to full speed to barely playable 
with no apparent reason. the game is paused for example and the fps goes 
like 60 to 25 and I see the GS thread goes to 99%. While when at full speed 
it goes to +- 70%.

Sorry to kinda report an issue but it was mostly to show that this was a 
good commit to maybe help isolate some problem.

The problem is more intense as more character are draw in-game.

This game is a fighting game from 1-4 player. Each time a player appear, it 
have a substantial hit on the emu.
When this abnormal slow down happen, I was able to see that the character 
drawing is the problem because each character has a teleport and they disappear 
for +- half a second. and when doing this move the emu gain back 
the speed and most of the time loose it right after the character appear to 
the teleported location

Original issue reported on code.google.com by Wagnar...@gmail.com on 27 Jan 2010 at 1:41

[GoogleCodeExporter]

Most likely there's a graphic effect that's just very slow in GSdx.
Like some stencil shadows, which aren't even very visible, yet cause a slowdown.
In any case, I'm not sure if tracking this as a bug is useful.

Try setting gamefix_skipdraw = x to some value around 2 - 10, and see if it 
goes away.

Original comment by ramapcsx2 on 27 Jan 2010 at 7:30

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The same issue happen on Zerogs.
The weird this is when you paused the game, those change in speed still happen. 
This is very weird because there is nothing moving on the screen.
Using the VU cycle stealing really help a lot when setting it to the max.

Original comment by Wagnar...@gmail.com on 27 Jan 2010 at 3:09

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Oh don't really track this as a bug. Take it more like misc info on a possible 
bug.

Original comment by Wagnar...@gmail.com on 27 Jan 2010 at 3:22

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This sounds like a VIF/VU load issue.  The game is probably swizzling tons of 
textures... for some reason.  There are tons of fairly seemingly illogical 
reasons for that to happen, and there may be some additional ways to speed it 
up, but yeah.  Not a bug, and not of any priority.  I'll mark it down as a 
possible Performance-related item though, for when we're again ready to address 
these types of texture swizzling / VIF / VU speed issues.

Original comment by Jake.Stine on 28 Jun 2010 at 3:29

• Changed state: Backburner
• Added labels: Component-VIF, Performance, Priority-Low, Type-Other
• Removed labels: Priority-Medium, Type-Defect

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this was fixed in recent revisions by disabling part of character shadows so it 
should be closed

Original comment by andutrache@gmail.com on 3 May 2011 at 1:02

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Original comment by shadowladyngemu@gmail.com on 12 Jun 2011 at 5:46

• Changed state: Fixed