Polygon Offset Sucks

[mh]

[Sajt]

I know, right. #3 ruined it for me.

[Spike]

hence why its not supported in the minimal gl3 spec.

[andrewj]

How do you do decals or multi-pass rendering on older cards without polygon offset?

It may be a crappy tool, but the alternatives (glDepthRange or adjusting the coordinates of polygons directly) seem a lot worse.

[leileilol]

you don't. you don't wanna make this guy angry


look at those eyes don't piss him off






or you can use stainmaps for decals which really suck for bullets and really obstruct appearances of floors. i'm glad that was only a short time novelty but it doesn't need polygon offset as it just touches the lightmap


also - could decals be rendered in a separate pass from the world which is calculated by z after the render to peel away from the obstructed decals but the rendering of the decals themselves don't use an offset but a depth check after they're made while calculating an offset?!! i don't know what the hell i'm saying

[r00k]

[revelator]

[leileilol]

[mh]

[Spike]

[mh]

[Spike]

anything that 'supports' a deprecated ftransform doesn't have a fixed-function pipeline any more, so it'll match if your maths matches anyway, at least that's the theory. So long as you're using the same matricies.

[Sajt]

[andrewj]