@tlosm
Quote:
Uh, your Radeon HD 4650 most certainly does have HW acceleration for 2D operations. Your benchmark results show this too.
Why then, does the Radeon 9000 beat the Radeon HD 4650 in 3 out of 4 SDLBench tests? Well, Radeon HD cards don't have a dedicated 2D blitter unit like the old Radeons do, so the 3D GPU has to do everything. As a result, they have greater per-2D-operation overhead. That's not so great if you're doing many tiny operations, like SDLBench does.
However, your HD 4650 is faster with:
- large blits (more likely with large HD screens)
- compositing
- 3D**
You can see this in the following GfxBench2D results:
-
Sam460ex + Radeon HD 4650 result-
Pegasos II + Radeon 9000If you compare the graphs/tables carefully, you'll see the HD 4650 come out on top in large blits, and totally beat the 9000 in the compositing tests.
Hans
** Based on the compositing results, which both cards have to use the 3D GPU for. We'll have to wait for actual 3D drivers to get hard data