Surface#set_at does not respect alpha.
Reported by John Croisant | October 23rd, 2009 @ 02:38 AM
Surface#set_at ignores alpha when setting the pixel color.
>> s = Rubygame::Surface.new([1,1])
=> #
>> s.get_at([0,0])
=> [0, 0, 0, 0]
>> s.set_at([0,0], [255,0,0,100])
=> #
>> s.get_at([0,0])
=> [255, 0, 0, 255]
It should set the pixel alpha to exactly the alpha given, or default to 255 (full opacity) if alpha is omitted.
Comments and changes to this ticket
-
John Croisant October 23rd, 2009 @ 02:40 AM
- → Milestone cleared.
- → Tag changed from “” to “@bug surface”
- → State changed from “new” to “resolved”
This is fixed in Rubygame 2.6. However, issue #10 can still cause trouble because Surfaces may not have an alpha channel even if they were supposed to.
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Flexible library for making games with the Ruby language.
rubygame.sourceforge.net
