Getting max sun on a pool in Austin is less important than getting sun on a pool in Albany. Though of course it will heat up slower in the spring and cool off faster in the fall. And in the summer, a touch of shade for you is good, to keep the water cooler. Of course, as nature would have it, that's when the sun will hit your pool the most. Do you plan to have a heater? Of not, the sun issue becomes more important for early and late season comfort. I don't live in Texas, but when I'm in the pool I like to be in the sun, even when its 90-100 degrees. But that's just me. I like sun.
As for how much shade it will receive, it really depends how close your pool is to your house, how tall the house is and your exact direction.
From a pool chemistry standpoint, a pool can easily be maintained in a lot of sun or a little.