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Message from discussion blit alpha transparency
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Sebastian Schlegel  
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 More options Oct 16 2012, 7:23 am
From: Sebastian Schlegel <j.sebastian.schle...@googlemail.com>
Date: Tue, 16 Oct 2012 04:23:50 -0700 (PDT)
Local: Tues, Oct 16 2012 7:23 am
Subject: Re: blit alpha transparency
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glEnable(GL_BLEND)
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)

is the correct way and has only to be called once. You don't have to move
them into your draw function. But check your glClearColor. In my case the
alpha was set to 0 which caused the white appearance of the transparent
parts.

Am Donnerstag, 16. Februar 2012 23:56:12 UTC+1 schrieb Paul:

> when i blit an image w/ alpha transparency, the transparent parts show
> white
> and i already tried this code:

> glEnable(GL_BLEND)
> glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)

> but it didn't work...any help? thanks a lot


 
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