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→How to force-enable blocked graphics features
On Windows Vista and Windows 7, to force-enable Direct2D Content Acceleration, go to about:config and set '''gfx.direct2d.force-enabled=true'''.
On Android, to force-enable StageFright software decoding, go to about:config and set '''stagefright.force-enabled=true'''.
On Windows, you can also spoof your graphics system information to help debug driver blacklisting issues: see {{bug|604771}}.
If force-enabling a feature doesn't work, that probably means that your hardware doesn't support it. For example, layers acceleration currently requires support for 4Kx4K textures, which rules out some graphics cards, [http://software.intel.com/en-us/articles/intel-gma-3000-and-x3000-developers-guide/ like the Intel G31/G33].
