Issue with planet texture for extra planets

[phkb]

Repro'd it and confirmed it.

Oh, that's a relief! I thought it was just me, and my PC was starting a long, slow death spiral. I mean, it could still be doing that, but at least I'm not going mad.

I mean, I still might be going mad, but at least it's not as obvious now. Right?

Right?

[Redspear]

I mean, I still might be going mad, but at least it's not as obvious now. Right?

Don't worry, you can't go mad once you're already there

...pass the gravel would you?

[another_commander]

I think I got something. Please test this:

Open your oolite-default-atmosphere.fragment and change this code at the end

Code: Select all

gl_FragColor = vec4(totalColor, newOpacity);

to

Code: Select all

gl_FragColor = vec4(totalColor, clamp(newOpacity, 0.0, 1.0));

Keep the gas giant radius to 20000 as it originally is, Does the above change solve your issue? It did for me and I even set gg eadius to 30000 and it still was fine.

[Redspear]

I appreciate that last message likely wasn't for me but after applying the above change...



Radius in excess of 20,000km combined with rescaling planet multiplier of 3.5, therefore > 70,000km equivalent.

Previously this would have either resulted in a 'black hole' or a crash.

[another_commander]

I already checked in the fix with commit 7d2efe0. The root cause was that, because of the extreme size of the planets, sometimes the atmosphere shader was generating NaN for the atmosphere opacity value. We now clamp the opacity between 0.0 and 1.0, so any NaN will automatically convert to 0.0 and the shader will be saved.

[Cody]

Given that it's fixed, could that black hole be recreated as a one-off? I'm thinking of an OXP that plonks a small but massive black hole in a system.

[another_commander]

Given that it's fixed, could that black hole be recreated as a one-off? I'm thinking of an OXP that plonks a small but massive black hole in a system.

How about making a pllanet with a fully black texture?

[cbr]

So I darkened phkb's Charon V Giant3 and set out to find it again...



It needs a few extra settings to work

[Redspear]

Given that it's fixed, could that black hole be recreated as a one-off? I'm thinking of an OXP that plonks a small but massive black hole in a system.

How about making a pllanet with a fully black texture?

Almost certainly unbalanced but very simple and potentially interesting...

P = pull towards 'black hole', like it or not

r = km radius of 'black hole'
d = km distance from/to 'black hole'

P = r / k

[Cody]

Very small, but massively massive, likely to mess with torus drives, wouldn't show on the compass or scanner (so very hard to not-see).

[Cholmondely]

Given that it's fixed, could that black hole be recreated as a one-off? I'm thinking of an OXP that plonks a small but massive black hole in a system.

This is something which I would love to see.

[hiran]

Very small, but massively massive, likely to mess with torus drives, wouldn't show on the compass or scanner (so very hard to not-see).

Whatever the core of a star system is (I guess it would be the star as it is the biggest mass), the black hole would take over, right?

You would not place a black hole into a star system but a galaxy around a black hole...

[Cholmondely]

Very small, but massively massive, likely to mess with torus drives, wouldn't show on the compass or scanner (so very hard to not-see).

Whatever the core of a star system is (I guess it would be the star as it is the biggest mass), the black hole would take over, right?

You would not place a black hole into a star system but a galaxy around a black hole...

From what I've read there seem to be several - the witchpoint beacon, the sun (source of all in-game light), and the planet.



Reference: Distance units (Aegidian, 2006)



Edited to add: Black Hole - new wiki page with prototype OXP link

[Cody]

I've a feeling that no texture would look more like a black hole than an all-black texture. Can't check that though.

[hiran]

I've a feeling that no texture would look more like a black hole than an all-black texture. Can't check that though.

If you want to see a black hole in space you not only see a red 'sphere'. You also see the effect on the light. It is like a gravitational lens bending light that is passing too close. Through that effect you can partly see what is going on behind.

https://en.m.wikipedia.org/wiki/Gravitational_lens