How to use blend_state for tile

Questions
1

Can I use my own function blend for tile like:

render.enable_state(render.STATE_BLEND)
render.set_blend_func(render.BLEND_ONE, render.BLEND_SRC_COLOR)
render.draw(self.tile_pred)
render.disable_state(render.STATE_BLEND)

I tried, but render always uses the version specified in the outline properties
(ALPHA, ADD or MULTIPLY)

2

No sorry, that is not possible. The predefined high-level blend mode will override the blend settings.

3

We are still unable to change blend function this way?