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Re: Draw multiple textures with additive alpha

Subject: Re: Draw multiple textures with additive alpha
From: Jean-Francois Roy <email@hidden>
Date: Fri, 16 May 2008 17:50:24 -0400
Delivered-to: email@hidden
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As a gentle reminder, GLSL makes this all very easy and programmable hardware is everywhere :)

On May 16, 2008, at 16:17, Richard Salvatierra wrote:

Is glBlendMode() the same as glBlendFunc()

This was not working. Continues to show the background (semi opaque)

[vid_A bindCurrentTexture];
glBlendFunc(GL_ALPHA, GL_ZERO);
[vid_A compositeChannelInRect:theRect];

[vid_B bindCurrentTexture];
glBlendFunc(GL_ALPHA, GL_ONE);
[vid_B compositeChannelInRect:theRect];

-Rich

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References:
	>Draw multiple textures with additive alpha (From: Richard Salvatierra <email@hidden>)
	>Re: Draw multiple textures with additive alpha (From: Kenneth Dyke <email@hidden>)
	>Re: Draw multiple textures with additive alpha (From: Richard Salvatierra <email@hidden>)

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