We remember Ubi Software’s official statement about Assassin's Creed DX10.1 support like this:
- In addition to addressing reported glitches, the patch will remove support for DX10.1, since we need to rework its implementation. The performance gains seen by players who are currently playing Assassin’s Creed with a DX10.1 graphics card are in large part due to the fact that our implementation removes a render pass during post-effect which is costly.
We remember Charles Beauchemin, the tech lead for the Assassin's Creed development team, his word about Assassin's Creed DX10.1 support like this:
- With DirectX 10.1, we are able to re-use an existing buffer to render the post-effects instead of having to render it again with different attributes. However, with the implementation of the retail version, we found a problem that caused the post-effects to fail to render properly.
Now we PCZILLA conducted a test comparing the difference of pictures quality between DX9, DX10 and DX10.1 modes at the same save point in Assassin's Creed using Radeon HD 3870 and official Cat 8.4 drivers for Windows XP 32-bit and Windows Vista 32-bit. You can see DX10 provides the worst picture quality, there’s no AA on the left side of the birdcage located on the right side bookshelf, there’s no HDR lighting effect, compared with DX9 and DX10 modes.
If Ubi Software’s official statement and the conclusion from Charles Beauchemin are right, then the DX10 and DX9 modes pictures which have correct AA processing on the edge of birdcage and HDR lighting should be the rendering error pictures! It’s ridiculous, isn’t it?
Caution: The compared picture below has large size about 3MB, use the picture link to download it: http://www.pczilla.net/upload/1.gif