how does QC handle it currently when it runs out of texture memory?
surely it shouldn't render errors or black it should just start
swapping
textures in and out of ram and slow down?
QC lets OpenGL manage textures and swap them in & out VRAM as necessary
I've just curious as I've been building compositions that work fine
on a
16MB graphics card full screen at 1152x768 (old powerbook) but I've
been
pretty sparing with my textures.
If it will render errors or black at the moment then we really need
tools to test the total VRAM in use inside QC so we can manage it
ourselves.
you can already: use OpenGL Info VRAM Amount output in combination
with Rendering Destination Dimensions and you can detect if the
composition if running at a big size with not a lot of VRAM.
(w * h * 4 * x) / (1024 * 1024) = some amount of VRAM in Mb
x = 4: minimum amount of VRAM so that the composition can actually
attempt to render (that leaves no room for textures)
x = 6: I assume most compositions will run perfectly with that
x = 8: recommended
Note that if the OpenGL Info reports that Core Image is supported in
HW, then you don't have to bother checking VRAM as such video cards
have plenty of it.
