1. Performance An experimental Direct2D rendering backend on Windows is available, turned off by default.
2. JavaScript Significant API improvements are available for
JS-ctypes, a foreign function interface for extensions. ctypes.jsm now supports complex types including structures, pointers, and arrays.
3. Stability Mozilla now uses an infallible allocator: if a request for memory cannot be fulfilled, the allocator aborts. This allows for simplification of the Mozilla code, as well as preventing a class of security errors with unchecked null pointers.
4. Plugins Additional fixes for multi-process plugins:
* crash and hang fixes;
* the Foxit Reader and Octoshape plugins work correctly;
* Performance improvements in the delivery of network streams.
The experimental Direct2D rendering backend is disabled by default. Firefox users need to perform the following operation to enable it in the Firefox 3.7 alpha 3 release.
1. Go to about
:config
2. Click through the warning, if necessary
3. Enter ‘render’ in the ‘Filter’ box
4. Double-click on ‘gfx.font_rendering.directwrite.enabled’ to set it to true
5. Double click on ‘mozilla.widget.render-mode’, set the value to 6
6. Restart