Stencils behaving badly about kivybits HOT 3 CLOSED

Thanks in advance. :]

from kivybits.

Okay, I think the confusion here is what a stencil does. Keep in mind I am no expert here, but from what I gather, a stencil only "clips" the area of drawing i.e. it prevent drawing, but does not drawing itself. I'm not at all sure what color even means in the context of a stencil...

"but if you remove that first recctangle, the visible part of the stencil is only that circle"
Yes, because only the circle commands have been added to the stencil.

"It would be much more convenient to be able to specify a depth between 0 and 255 to draw"
Kivy is based on OpenGL, so that pretty much determines how graphics are drawn.

"instead there seems to be this complete guesswork where some shapes sometimes draw black, "
You would have to more specific, as it seems to make sense to me. One thing I did notice, was that in you kv file, moving the "stencilpop" to right after the "stencilunuse" fixed some issues I did not expect..

canvas.after:
StencilUnUse
StencilPop

But aside from that, I'm afraid you'd have to be more specific about what is odd. Perhaps another simple example?

from kivybits.

Okay, so now I read it, the issues I did not expect are to be expected :-)

http://kivy.org/docs/api-kivy.graphics.stencil_instructions.html

Drawing in PHASE 1 and PHASE 3 must not collide or you will get unexpected results

from kivybits.