Original Post
I tried to implement motion blur on my card (gfII / mx) using the accumulation buffer like this:
/////////////////
drawScene();
glAccum(GL_LOAD,0.5f);
for (int i=1;i<=10;i++)
{
drawFrame(i);
glAccum(GL_ACCUM, 0.5f);
}
glAccum(GL_RETURN,1.0f);
/////////////////
while this approach does work, i can walk to the corner grocery store and back between frames. (well not really, it''s more like 1fps. the scene is just a single polygon)
i have other demos that use the accum buffer (no source) and they run MUCH faster than this.
does anyone have an idea why it''s so slow or what i may be doing wrong?
btw, i''m not certain that there''s anything i need to do to use the accum buffer first (like when i create the window do i need to specify that i want the accum buffer? perhaps it''s doing this in software mode instead? i really dunno)
thanks,
~byt
Just look at the last NeHe''s tutorial with radial blur...
