RE: [Algorithms] Bullets on walls

[Stephen J B. <sj...@li...>]

On Thu, 20 Jul 2000, Jaimi McEntire wrote:

> In d3d, this is the way I do it:
> 
> Create decals with a one pixel transparent border.
> Then, set the texture address mode to "Clamp".
> Calculate new UV coordinates for your decal based on the wall, instead
> of the Decal - then redraw the entire wall with your decal texture and
> new UV coordinates.
> This way you do not have to clip at all. I would assume you could
> do the same in OpenGL.
 
Doesn't this get a bit expensive when someone fires of an entire
clip of ammo at one wall - and then walks right up to it to
examine the damage?  Seems like each bullethole would be another
complete overwrite of the entire wall...bye-bye pixel-fill rate!


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