This is mostly a precursor to the attribute nodes implementation for IE9+ modes later, since most of them are stubs in legacy modes. There's also no way to insert them in legacy modes via node props either, since they don't expose IHTMLDOMNode* interfaces.
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https://gitlab.winehq.org/wine/wine/-/merge_requests/8029
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v4: d3dx9: Don't color key compressed pixel formats on 32-bit d3dx9.
d3dx9: Calculate a range of color key channel values in d3dx_load_pixels_from_pixels() if necessary.
d3dx9: Set all color channels to zero when color keying.
d3dx9/tests: Add some color key tests.
https://gitlab.winehq.org/wine/wine/-/merge_requests/7711