Speed-Difference: Win 7 and XP -> Drawing lib

[Marco2007]

Hi,

has anyone made the same experiences?
My App is on XP fast and on Win 7 very, very slow, when I wanna display something with OpenWindowedScreen....

Btw: I´m not the person, who counts milliseconds...

br and thx
Marco

[Kaeru Gaman]

subsystem?

... using DX7 on Win7 or Vista needs to switch off Aero, wich not only takes time but also has optical side effects.

[Marco2007]

I use the new standard Direct9X (4.40b7), but also same result with 4.31 and sub Dx9.
I`m so surprised, because it`s soooo slow...I will cut the code to a minimum...

....there something wrong with OpenWindowedScreen and for/next ...but I don`t know what...
App is running for about 1.5 years without any problems on XP (since 4.02), but on Win 7 it`s very slow...

***** Edit:

Could anyone please try this code on Win 7 and XP:

Code: Select all

If InitSprite() = 0 : End : EndIf

If OpenWindow(0, 0, 0, 220, 160, "A screen in a window...", #PB_Window_SystemMenu | #PB_Window_ScreenCentered)
  If OpenWindowedScreen(WindowID(0), 0, 0, 160, 160, 0, 0, 0)

   For f=0 To 100
      For i=270 To 810 Step 1
        StartDrawing(ScreenOutput())
        StopDrawing()
      Next
   Next   
  EndIf
EndIf

XP -> finished within a second
Win7 -> about 5 seconds...

I changed to:

Code: Select all

StartDrawing(ScreenOutput())
For f=0 To 100
  For i=270 To 810 Step 1
  Next
Next   
StopDrawing()

...but I´m really surprised, why there`s so much difference between XP and Win 7...

thx

[moogle]

Takes around 4-5 seconds to end for me on Vista (4.40b7 x86)

[PureLust]

It seems to be the ScreenOutput() (as you can see by trying the attached code).
Buffering the ScreenOutput() will maybe not work if you have a FlipBuffers() within the Loops.

BUT - if you don't have a FlipBuffers() within the loop, you should do it the "new" way (the 2nd way you posted above) anyway.

The following code will end within Milliseconds on Vista as well:

Code: Select all

If InitSprite() = 0 : End : EndIf

If OpenWindow(0, 0, 0, 220, 160, "A screen in a window...", #PB_Window_SystemMenu | #PB_Window_ScreenCentered)
  If OpenWindowedScreen(WindowID(0), 0, 0, 160, 160, 0, 0, 0)
    Timer1 = ElapsedMilliseconds()
    ScrOut = ScreenOutput()
    For f=0 To 100
      Dummy = WindowEvent()
      For i=270 To 810 Step 1
        StartDrawing(ScrOut)
        StopDrawing()
      Next
    Next   
    Timer2 = ElapsedMilliseconds()
    MessageRequester("Duration",Str(Timer2-Timer1)+"ms")
  EndIf
EndIf

Greetz, PL.

[SFSxOI]

PureLust, your code in the post above mine takes 47 ms on Windows 7 here.

[Marco2007]

hmm...Bug?