[1.7.10] TESR/OpenGL Transparency Sorting Issues

[Izzy Axel]

How do you properly implement transparency within a TESR with OGL?  When transparent things are viewed through the glass portion of my model without the liquid in it, it's just fine, but when the liquid is put in, viewing the liquid filled model through the glass of another copy of this model does this:

 

https://dl.dropboxusercontent.com/u/10036065/2015-08-19_16.13.48.png[/img]https://dl.dropboxusercontent.com/u/10036065/2015-08-19_16.13.36.png[/img]

 

 

It seems that relogging fixes this for an unknown reason, however viewing an empty model through a filled model then doesn't sort properly, it's very strange.

 

 

 

L107'>TESR

 

 

(The order of rendering is at the very bottom, in 'renderTileEntityAt')

[TheGreyGhost]

Hi

 

If your transparent pane is rendered first, it writes to the depth buffer, and then anything behind the pane that is rendered later (eg the second model, with the red liquid in your screenshot) is behind the glass, so it gets culled (doesn't render at all).

 

It all depends which model renders first.

 

It will help if you turn off writing to the depth buffer when drawing your transparent glass

glDepthMask(false)

and if you only render the panes which face the player (turn on back face culling).

 

The only robust way to fix it is to render all your transparent parts last, sorted in depth order with the other transparent objects in the scene.  This is a right pain in the butt.

 

-TGG

[Izzy Axel]

Yeah, turning off the depthMask didn't really help, it seems to be an issue with newly placed models being viewed through models that were already placed.  The last part sounds like something the MC rendering engine is doing, and I can't touch it without something like an AT? (and that sounds like a very bad idea)

[TheGreyGhost]

Yeah, turning off the depthMask didn't really help, it seems to be an issue with newly placed models being viewed through models that were already placed.  The last part sounds like something the MC rendering engine is doing, and I can't touch it without something like an AT? (and that sounds like a very bad idea)

It can be done.  But it is an awful set of hacks and I reckon it's almost certainly better if you change your model so that it's not so visually annoying.

 

-TGG