RE: [Algorithms] Cubemap support

[Odin J. <od...@ps...>]

Well. If you specify 6 textures, it's rather fast.
For true environment reflection, you have to render the scene 6 times
into the texture. The speed of that really depends on your card.
On GeForce3 it's quite fast, but I haven't put it into our game yet.
I'll post some timings once it's done, since the engine can fallback to
a normal environment map if the hardware doesn't support it or the user
turns it off.

Odin

-----Original Message-----
From: gda...@li...
[mailto:gda...@li...] On Behalf Of Paul
Firth
Sent: 14. september 2001 15:06
To: gda...@li...
Subject: Re: [Algorithms] Cubemap support

Odin Jensen wrote:

> Is GeForce the only card to support cube maps? (In both GL and DX)

What I'd like to know is how much slower a cube-mapped surface is to
render
than a single textured surface?

Surely it would be six times slower since it has to render the object
six times?

Cheers, Paul.


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