Locating and Editing Planet Textures?

[MajorStorm]

Simple put, how do I find/where do I find the textures (color, bump, height) used for the planets?

Edited July 7, 2015 by MajorStorm

[NathanKell]

Moved to Addon Development, where this is more appropriate.

They're inside the Unity assets, and therefore not directly editable. You can, however, replace them by using Kopernicus.

[MajorStorm]

Is it possible to access them via code?

[Robotengineer]

Try KerbalMaps if you need maps.

[MajorStorm]

I don't want maps, I actually want to find a way to modify the textures during run-time.

[NathanKell]

MajorStorm: If you want to modify the heightmap (what's used in PQS) then yes, you can access it during code. Get the PQSMod_VertexHeightMap PQSMod on the Kerbin PQS and modify the MapSO on it.

Since the scaled space textures are loaded as read-only you can't modify them, you can only replace them.

[xEvilReeperx]

I've used this snippet for ages to convert unreadable textures back to a readable format:

public static Texture2D CreateReadable(this Texture2D original)
{
    if (original == null) throw new ArgumentNullException("original");

    if (original.width == 0 || original.height == 0)
        throw new Exception("Invalid image dimensions");

    var finalTexture = new Texture2D(original.width, original.height);

    // isn't read or writeable ... we'll have to get tricksy
    var rt = RenderTexture.GetTemporary(original.width, original.height, 0, RenderTextureFormat.ARGB32, RenderTextureReadWrite.sRGB, 1);
    Graphics.Blit(original, rt);

    RenderTexture.active = rt;

    finalTexture.ReadPixels(new Rect(0, 0, finalTexture.width, finalTexture.height), 0, 0);

    RenderTexture.active = null;
    RenderTexture.ReleaseTemporary(rt);

    return finalTexture;
}

[NathanKell]

Excellent thinking!

[problemecium]

I've actually already extracted all of the planet textures for use in a personal version of EVE. I'd post them here, but I worry it violates the TOS.

Does it, or would it help if I just tossed them up in this thread?

[NathanKell]

It does. The addon rules prohibit sharing/reusing stuff from KSP_Data (vs. GameData).

[DMagic]

Anyone know how to get the actual Scale space texture drawn over the surface of the planet?

It's easy to get the individual textures used for scaled space:

Texture diffuseMap =  body.scaledBody.renderer.material.mainTexture;

//or

Texture diffuseMap =  body.scaledBody.renderer.material.GetTexture("_MainTex"); //Substitute _BumpMap to get the normal.

//or

Texture diffuseMap =  body.scaledBody.GetComponent<MeshRenderer>().material.mainTexture;

For the non-ocean planets this works fine and gives you the flat color map. For ocean planets you get a map that's black on the surface and clear on the ocean.

Using xEvilReeperx's snippet (which I now seem to find everywhere after I know what it is...) I can use the material to get ocean planet textures that look right in some cases. Also note that you need to use Apply() to the final texture before you can actually use it, you could do that with the texture returned by that method, or before the last line in that snippet: finalTexture.Apply();

var renderer = body.scaledBody.GetComponent<MeshRenderer>();

var diffuseMap =  renderer.material.mainTexture;

var finalTexture = new Texture2D(diffuseMap.width, diffuseMap.height);

var rt = RenderTexture.GetTemporary(diffuseMap.width, diffuseMap.height, 0, RenderTextureFormat.ARGB32, RenderTextureReadWrite.sRGB, 1);

Graphics.Blit(original, rt, renderer.material); //Note the addition of the material using a different overload here

RenderTexture.active = rt;

finalTexture.ReadPixels(new Rect(0, 0, finalTexture.width, finalTexture.height), 0, 0);

RenderTexture.active = null;
RenderTexture.ReleaseTemporary(rt);

finalTexture.Apply();

GUI.DrawTexture(Rect, finalTexture);

This will give a texture for Eve that has the right color and looks like it has some specular shader applied. Kerbin and Laythe are still screwed up, but in a different way than before. The other planet textures look no different from the flat diffuse map.

So is there some way to have the normal map applied to the diffuse map? Or does that even work without some 3D mesh to wrap it around and apply a light source to? And any ideas about what makes the Kerbin and Laythe scaled space maps different?

[MajorStorm]

I am assuming that in order to do this, I would need to access libraries/apis being used. For that I can read and go through your scripts used on RealSolarSystem via Github, awesome that you uploaded it there. And just out of curiosity, how did you figure out how to modify these things in the first place?

[J.Random]

It does. The addon rules prohibit sharing/reusing stuff from KSP_Data (vs. GameData).

Psst! Don't tell anyone, but this rule seems to not work when people share the asset file with modified sun_flare.