Which (sprite-based) render types support gradients?

[ExpHP]

Dai asked a question on Discord about color modes 2 and 3 not working in STD. They had this ANM script:

type(8);
sprite(spr_fire0);
blendMode(1);
scrollY(0.001f);
rotate(rad(90f), 0.0f, 0.0f);
colorMode(3);
alpha(224);
alpha2(0);
stop();

(and they also tried with color/color2)

I took a quick peek at DDC in binary ninja and..... it seems very well possible that mode 8 does not, in fact, support gradients.

Did I never test this? Some day I should take proper notes on which sprite-based render types actually do support gradients. (and this includes the modes for texCircle and friends)

Dai did a test on the 3D render types in WBaWC:

• 8 and 15: no gradients. (said they both look identical)
• "also 5 fills the entire screen with the sprite and supports gradients, and 7 does the same thing but without gradients. 7 also blends with background fog" (these probably aren't meant to be used in 3D but just happen to be visible)
• 4 and 6 billboarding DOES support gradient.