There is a huge potential for security exploits in 3d code. Drivers are optimized for performance and glitches will likely allow malicious code.
Forcing developers who use these features to sign their code gives Adobe a way to police exploits.
In fact, look at how soon the cut off date is. A researcher has probably sent them a proof of concept exploit. Adobe's solution is to disable the feature for most developers.
There is a huge potential for security exploits in 3d code. Drivers are optimized for performance and glitches will likely allow malicious code.
Forcing developers who use these features to sign their code gives Adobe a way to police exploits.
In fact, look at how soon the cut off date is. A researcher has probably sent them a proof of concept exploit. Adobe's solution is to disable the feature for most developers.