PB supports bmp transparency!!!

[Num3]

Well i didn't even know bmp could have transparency !
I've found it by accident actually, and it works under pb natively!

Here's the code!

Code: Select all

If InitSprite() And InitSprite3D() And InitKeyboard()
  
  OpenScreen(800,600,32,"bmp transparency!")
  For a=0 To 20
    LoadSprite(a+1,GetCurrentDirectory()+"gfx\p"+RSet(Str(a+1),4,"0")+".bmp",#PB_Sprite_Texture | #PB_Sprite_AlphaBlending)
    CreateSprite3D(a+1,a+1)
  Next
  a=0
  Repeat
    
    ClearScreen(back)
    ;ClearScreen(0)
    
    Start3D() 
      DisplaySprite3D(a+1,200,200,255)
    Stop3D()
    
    FlipBuffers(2)
    
    
    ExamineKeyboard()
    
    If KeyboardReleased(#PB_Key_All)
      End
    EndIf
    
    If ElapsedMilliseconds() - last > 50
      last=ElapsedMilliseconds()
    a+1
    If a>=20
      a=2
      back=RGB(Random(255),Random(255),Random(255))
    EndIf
  EndIf
  ForEver 
  
  
EndIf

Here's a sample package with graphics!

File: 138kb->battle.zip

[Dare]

Neat. Thanks

[Edwin Knoppert]

Must be a Vista thing?
I see only plain colors switching

[Num3]

Must be a Vista thing?
I see only plain colors switching

Hmmm... That might be so... Going to check that!

Works with alpha here :S (under vista)




--Edit--
Did you download the package with graphics!?

[Num3]

After digging around i've discovered bmp alpha transparency exists for quite some time, and that GDI supports it!

It's called Format32bppArgb. It's present in GDI+...

Tech Article here (from 2003)

[Kaeru Gaman]

with Sprite3D, Alpha Transparency also works with PNGs
it's a capability of your grafix card when using Sprite3D.

I didn't know that BMP can hold an Alpha channel,
only knew that there is a special BMP format with a designated transparent color.
you could use them in imagegadgets to have a transparent color,
with the VB6 examples such bitmaps were included, but I didn't find a way to create those BMPs.

[Violet]

Nice to know, but I do not recommend to use Bitmaps with Alpha Channel. That is very special (already read in wiki some time ago), just very few applications can handle it (Photoshop of corse, with GIMP I am not sure).

[Derek]

Must be a Vista thing?
I see only plain colors switching

Hmmm... That might be so... Going to check that!

Works with alpha here :S (under vista)

Yep, works here under Vista Business.

[zefiro_flashparty]

woaa nice effect =)

epileptic kids, not see the example

[bobobo]

bmp (v4/5) can hold alphachannel und are usable as container for
png / jpeg(fif) formats

look @ http://msdn.microsoft.com/en-us/library/ms532301.aspx

[ricardo]

Does IE supports bmp with alpha transparency?

[Violet]

I know that Internet Explorer 7 is supporting PNG Images with Transparency (I tested it).