3-D Rendering Context exploratory tests

backface-visibility-1.html

Does backface-visibility hide an absolutely-positioned block that is a child of a transformed element with preserve-3d? hidden in all engines, except that text but not background is visible in Gecko.

backface-visibility-2.html

Variant of case 1, but transformed instead of absolutely positioned. hidden in all engines.

backface-visibility-3.html

Variant of case 2, except the background and text are on a child of the element with backface-visibility. background hidden in Gecko, text visible in Gecko, all visible in Chromium and WebKit.

backface-visibility-4.html

Does backface-visibility work on a grandchild of the element with preserve-3d, when the intervening element has a transform? Same results as case 3.

backface-visibility-5.html

Like case 4, but the intervening element no longer has a transform. As for case 1, hidden in all engines, except that text (but not background) visible in Gecko.

pseudo-stacking-context-1.html

Baseline that shows how blocks and inlines within the same pseudo stacking-context interleave.

pseudo-stacking-context-2.html

pseudo-stacking-context-3.html

pseudo-stacking-context-4.html

pseudo-stacking-context-5.html

Tests that show when 3-D transforms separate this interleaving. The spec and all implementations interleave on 2 and separate on 3-5. This actually isn't very interesting.