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Render to texture - dynamic cube map generation

Started by phong666 Feb 2, 2003 at 5:17 AM 3 replies 650+ views

Original Post

Feb 2, 2003 at 5:17 AM

hi, I want to generate my cube map dynamically every frame. To save render time, it might be good to render the 6 cube faces directly to the textures, am I right? Does anyone know how to render directly to cube map textures? Thanks

Ostsol

Feb 3, 2003 at 9:41 AM

There''s the ARB_pbuffer and ARB_render_texture extensions, if your video card supports them. If not then you''re stuck with rendering the scene first, then copying it to the texture.

duhroach

Feb 3, 2003 at 10:30 AM

Check out some of the stuff over @ nvidia''s site. Especially their Per Pixel attenuation demo, they have an entire class divoted to cube mapping

~Main

==
Colt "MainRoach" McAnlis
Programmer
www.badheat.com/sinewave

phong666

Feb 3, 2003 at 10:59 AM

Do you mean the "Per-pixel Attenuation in OpenGL" sample?

This example loads the cube map textures from disc, but I want render them in real-time directly to video ram.
I need a render to texture code sample, I think.

Do you know where to get one?

davepermen

Feb 3, 2003 at 11:52 AM

opengl.nutty.org

"take a look around" - limp bizkit
www.google.com

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