Cocoa Port:
- On startup, expand all items in the Input Preferences control list by default.

git-svn-id: https://svn.code.sf.net/p/desmume/code/trunk@4986 5577840e-afb3-4e59-9ef3-2b7f898b1952
Video Filter:
- When changing filters, skip the costly construction of a new destination buffer if the new surface size will be the same.

git-svn-id: https://svn.code.sf.net/p/desmume/code/trunk@4987 5577840e-afb3-4e59-9ef3-2b7f898b1952
Video Filters:
- Have the xBRZ filter handle the alpha channel.
- Minor code cleanup of video filter managing code.

git-svn-id: https://svn.code.sf.net/p/desmume/code/trunk@4988 5577840e-afb3-4e59-9ef3-2b7f898b1952