From: christopher.g.dorosky++at++lmco.com
Date: 03/20/2000 14:26:24
Hello,
I am trying to pre-download texture in my application.
In a post draw callback, I found that I can use the pftexture->subload to
load in pieces of a large texture at a time.
However, the operation is not equally efficient in both pipes.
On our two pipe system, if I do the subloading in pipe 0 only, each piece
takes usecs of time.
On pipe1, it can take 34ms to load the same piece which pipe 0 has already
loaded in.
Our frame rate is 30Hz, so I suspect that most of the 34 ms is 33 ms frame
hang waiting for pipe0 to do something.
Does anybody have any idea why a texture that was just loaded into pipe0's
texture memory could take so long to load into pipe1's?
Is this even necessary? Do pipe0 and pipe1 implicitly share the texmem?
Chris
Christopher Dorosky
Senior Electronic Systems Engineer - Real Time Simulation
Lockheed Martin Missiles and Fire Control - Dallas
christopher.g.dorosky++at++lmco.com
972-603-2349
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