When I use blending like in tutorial 8, and I have set glColor4f(1.0f, 1.0f, 1.0f, 1.0f), why I can still see texture behind my another texture like there would be still some transparency on it? [edited by - Mkk on June 29, 2003 2:41:32 PM]

if your using glBlendFunc(GL_SRC_ALPHA,GL_ONE); the black in an image will always be transparent.

Ok.. any idea what settings should I use then? (to get zero transparency for the texture when alpa is 1.0)

Hmm, it´s not only black that gets mixed with other texture, it´s same what color of textures I try, they still get mixed when they are one upon another.


[edited by - Mkk on June 29, 2003 10:55:56 PM]

If you have MFC I have a blending demo on my site that lets you experiment with the different source and destination functions. Don''t know if it''ll help but thought I''d volunteer it.

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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

Remember: When using this blendfunc you must draw all non-transparent objects first and then draw all blended one''s BACK TO FRONT!

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Thanks for the info! :-)