Terrible Flickering with DirectDraw

[JonasE]

I try to make a simple game, but when I create Graphics it flicker where bad. Even then I use a back buffer (double buffering). I draw to a Panel and not full screen.

 

First I create surface like this.

DDDevice = New Device(CreateFlags.Default)

DDDevice.SetCooperativeLevel(Panel, CooperativeLevelFlags.Normal)

 

CK.ColorSpaceHighValue = RGB(0, 0, 0)

CK.ColorSpaceLowValue = RGB(0, 0, 0)

 

SDesc.SurfaceCaps.PrimarySurface = True

FrontSurface = New Surface(SDesc, DDDevice)

 

SDesc.SurfaceCaps.PrimarySurface = False

SDesc.SurfaceCaps.OffScreenPlain = True

SDesc.SurfaceCaps.VideoMemory = True

SDesc.Height = Panel.Bottom - Panel.Top

SDesc.Width = Panel.Right - Panel.Left

 

BackSurface = New Surface(SDesc, DDDevice)

BackSurface.SetColorKey(ColorKeyFlags.SourceDraw, CK)

 

Clip = New Clipper(DDDevice)

Clip.Window = Panel

FrontSurface.Clipper = Clip

 

SDesc.Clear()

SDesc.SurfaceCaps.OffScreenPlain = True

SpriteSurface = New Surface("Sprite.bmp", SDesc, DDDevice)

SpriteSurface.SetColorKey(ColorKeyFlags.SourceDraw, CK)

 

SDesc.Clear()

SDesc.SurfaceCaps.OffScreenPlain = True

MapSurface = New Surface("BackGround.bmp", SDesc, DDDevice)

 

 

When I draw I do this.

 

 

Try

BackSurface.ColorFill(Color.Blue)

BackSurface.DrawFast(0, 0, MapSurface, Map.Rect, DrawFastFlags.DoNotWait)

BackSurface.DrawFast(0, 0, SpriteSurface, DrawFastFlags.SourceColorKey)

Catch ex As SurfaceLostException

InitializeSurface()

End Try

 

Dest = New Rectangle(PointToScreen(Panel.Location), Panel.ClientSize)

FrontSurface.Draw(Dest, BackSurface, DrawFlags.Wait)

 

 

Why does this program flicker so badly? :mad:

[Aragorn7]

BackSurface.DrawFast(0, 0, MapSurface, Map.Rect, DrawFastFlags.DoNotWait)

 

Change that to DrawFastFlags.Wait

 

See if that helps. Also, you probably shouldn't be using "Draw Fast". Try using BltFast().

[JonasE]

No, the same thing.. Flickering like hell.. :(

[ThePentiumGuy]

Try turning on

Me.SetStyle(Controlstyles.Opaque,True)

 

It's possible that the panel is "interfering" with your drawing (Not sure if there's a Panel1.SetStyle).

 

-The Pentium Guy

[Loffen]

Flickers in weird colors?? pink light yellow etc?? Try running the app with release and not debug DirectX... Worked for some friend..

 

--Loffen

[ThePentiumGuy]

Flickers with weird colors? In Direct3D (note, not DirectDraw :)), you have to call dxDevice.Clear in order to fix that.

 

BackSurface.ColorFill(Color.Blue) <-- maybe there's a BackSurface.Clear somewhere

-The Pentium Guy

[JonasE]

It doesn�t help. I post the program, maybe someone can figurate it out.

 

So far - it not doing so much, a red rectangle scroll from left to right, then you press right key. The background I very ugly, it base on tiles (32,32) and I have just pick three rectangles (pink, brown and light blue).

Kar.zip

Edited October 27, 2004 by PlausiblyDamp

[ThePentiumGuy]

It works fine for me :). I see no flickering (I'm on a 9800 Pro oc'd to XT speeds btw)

[JonasE]

:confused:

 

Maybe it because I use Windows 2000, and try to run it on my Work computer. Licenses and other program creates conflicts.

 

I don�t know, i give up.. :(

 

Thanks anyway.