[GEM-dev] Re: multiple_window: the questions begin!

[james tittle]

On Dec 1, 2004, at 4:37 PM, B. Bogart wrote:
>
> All good reasons, what is the difference between a pbuffer and a 
> texture? Part
> of the TOT project (of which pixelTANGO is a component) is corrective
> projection. Basically you calculate a 3D mesh to un-distort the image 
> projected
> onto an irrefular surface. If we could render the window to a texture 
> then we
> could apply this correction to the entire render window rather than 
> only to the
> textures on objects.

...difference between pbuffer and texture isn't a whole lot...they're 
both graphic card memory/VRAM resident;  pbuffers allow for floating 
point pixels, plus they're supposed to key into new accelerations on 
gpu's...basically, they're really the way to go for vertex/fragment 
shader render passes...

...as far as corrective projection, I did something like that several 
years ago with a theatre project:  it was a weirdly shaped screen, and 
of course the projector was off angle...pretty neat how it worked 
out...

jamie