Hi Paul,
On 3/7/09 5:57 PM, Paul Martz wrote:
Ulrich Hertlein wrote:
While we're on the subject: for simple objects, say a sphere or an
AABB, shouldn't it be possible to do this calculation quicker on the
CPU without going to the GPU? Isn't something like this done for small
feature culling?
Host computation has (by definition) no access to the depth buffer.
Certainly not. Sorry, I should've been clearer.
What I'm basically after is "how big (in pixels) is this box/sphere in screen space"
without taking occlusion, clipping, or such into account. Given projection and modelview
matrix that should be doable, right?
Cheers,
/ulrich
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