gl_point and alpha

Graphics and GPU Programming Programming

4 comments, last by pavel989 15 years, 3 months ago

114

Author

January 07, 2009 04:32 PM

it seems to me as though points are not effected by color states which include an alpha. is this so?

389

January 07, 2009 05:04 PM

Have you enabled blending and set the apropriate blend function?

114

Author

January 07, 2009 05:18 PM

im using glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

and yes GL_BLEND is enabled

122

January 07, 2009 07:54 PM

either glColor or glMaterial(..., GL.GL_DIFFUSE, ...) will work to
set the alpha. If you use material once in your render, glcolor wont work anymore.

114

Author

January 07, 2009 10:17 PM

do you mean like glcolor4f()?
thats what i was trying to use

114

Author

January 08, 2009 02:19 PM

and for that matter, i haven't used material

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