Before, the only way to set the double-sided flag was to enable a non-opaque mode, because the flag was hidden. We are moving the double-sided flag to the general property group instead of the opacity property group, so it is always available. In this particular commit, we just add the general.doubleSided property so we don't break existing data. In an upcoming commit I will remove opacity.doubleSided, once we have the material backward compatibility system ready.
I also added another "default" texture map to the Common/Feature gem that is directional, so better for understanding UV/tangent space. These were copied from the AtomLyIntegration gem. This is being used for a screenshot test in AtomSampleViewer with the new 009_Opacity_Opaque_DoubleSided.material.
Signed-off-by: santorac <55155825+santorac@users.noreply.github.com>
Changed to lerp-based blending, with an implicit base layer.
Renamed some variables to be more clear (blendWeight instead of blendMask, since the weights could come from vertex colors instead of a texture).
Updated DefaultBlendMask_layers.png to better suit the new layering model. It has a black background and overlapping R, G, and B areas.
Updated some of the test materials UV transforms to better fit the new DefaultBlendMask_layers image.
Added a new test object, which is a plane that has painted vertices.
Note that I updated test criteria in AtomSampleViewer to account for these changes as well.
santorac
Chris Burel
gallowj
Terry Michaels
Chris Santora
alexpete