Weird mask problem?
BlitzPlus Forums/BlitzPlus Programming/Weird mask problem?
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All images in my game have a mask colour of green (00FF00). For some strange reason, if I attempt to DrawImage onto an existing image's buffer rather than the BackBuffer, the mask colour isn't transparent!imgBackground = LoadImage("bg.bmp")
imgSprite = LoadImage("sprite.bmp")
MaskImage imgSprite, 0, 255, 0
SetBuffer ImageBuffer(imgBackground)
DrawImage imgSprite, 100, 100
SetBuffer BackBuffer()
DrawBlock imgBackground, 0, 0Here's an example of where the green mask is being drawn rather than ignored: Am I missing something, or is this an issue with Blitz+? [Edit] After playing around some more, this problem only appears to exist in full screen with managed images. [/Edit] |
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| what happens if you draw the background using drawimage? |
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| It looks eactly the same as the above image, unless I set the mask to #00FF00 for "imgBackground" of course. I think this is a bug; DrawBlocking onto another image should create the behaviour shown above (mask is ignored), not DrawImage - It's ignoring the mask. |
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| are you in 16 bit or 32 bit display ? if you are in 16 bit the coulours are not exactly rendered as you drawn them. there are some code in the code archive to fix this problem http://www.blitzbasic.com/codearcs/codearcs.php?code=3 http://www.blitzbasic.com/codearcs/codearcs.php?code=182 hope this will help :) |
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