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FBO+GLSL write to texture with less than 4 components

Subject: FBO+GLSL write to texture with less than 4 components
From: Mark <email@hidden>
Date: Thu, 29 Nov 2007 05:08:52 +0100
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Hi list, I've been trying to write the output of a fragment shader to LUMINANCE texture, but all I get then is a completely black texture.

Question: do FBOs support writing directly to a texture with fewer than 4 components - how? If not, is there any workaround?

Thanks
Mark
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