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FlAsH
Joined: 26 Apr 2003
Posts: 1
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 Posted: Sat Apr 26, 2003 5:14 pm Post subject: transparent .bmp's |
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ok i wanted to know how i would make the backround on a .bmp transparent, i try actually setting transparency to 0% but it always comes out white and not transparent.
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-=FlAsH=- |
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Alzeric
Joined: 10 Apr 2003
Posts: 36
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| Posted: Sun Apr 27, 2003 5:10 am Post subject: |
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I might be wrong on this one, but I believe that bitmaps can not have transparent backgrounds I think they revert to white. You might wanna try making it a .gif and in Photoshop 7 I know there is a Save As Web feature and make sure you check mark Transparency (this is what i use when i need a image transparent). Also you will be able to get the filesize alot smaller using .gif instead of bitmap. In PS7 you can optimize the filesize and create substantially smaller files.
Like I said I might be wrong on the .bmp can't be transparent but if you don't need the file in .bmp format then use .gif. If you do and you are creating images for let's say a video game (which i've done some images for mod projects before) where the image had to be transparent and .bmp but there was a certain color that the game engine made transparent (ie. Bright Pink) If this is the case then find others that are modding the game and see what color is needed for transparency in that particular game engine.
~Alzeric
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beetle
Joined: 04 Mar 2003
Posts: 105
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| Posted: Mon Apr 28, 2003 9:25 am Post subject: |
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Alzeric -- you are correct - bitmaps cannot contain transparency.
The highest color purity for bitmaps is 24bit. That is 8 bits per color per pixel. 32-bit color provides an extra 8-bit channel for transparency (alpha) -- but since bitmaps highest is 24, they cannot have any transparency, as all bits are devoted to RGB color.
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beley
Joined: 19 Feb 2003
Posts: 109
Location: Georgia, USA
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| Posted: Tue May 06, 2003 4:28 pm Post subject: |
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Aren't GIF and PNG the only image formats (used regularly) that support transparent backgrounds?
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beetle
Joined: 04 Mar 2003
Posts: 105
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| Posted: Tue May 06, 2003 4:48 pm Post subject: |
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beley - yes, to the best of my knowledge.
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