My first texture replacement. [Updated]

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Uradamus
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My first texture replacement. [Updated]

Post by Uradamus » 03 Jul 2016, 19:44

Update:

After about 5 revisions I finally have these textures pretty much where I wanted them before letting them loose into the general public. My experience is mostly with modeling, texturing is still pretty new to me, so I am sure there is plenty of room for improvement on these, but I am still fairly happy with the results.

https://mega.nz/#!xJVHGQ5K!dyRwJYSasRxF ... -1m8KhTPOU

If you haven't already enabled the extra shader options for terrain textures in your settings.cfg, make sure to follow the link at the very bottom of this post to find instructions on what you need to do. Otherwise things wont look right for you, since those features are disabled by default.

Here are a couple of new screen shots. Not a lot has changed; basically cleaned up a couple of slight seams I missed, added a bit more grunge to the area between the stones and adjusted the specularity a bit.

https://postimg.org/image/9xc7twynr/
https://postimg.org/image/4w9u2a5nb/
https://postimg.org/image/68isw0uyf/

==========

Original Post:

I've been wanting to mess around with the advanced material options offered by OpenMW for a while now, so I finally got around to trying things out with my first texture replacement over the past couple of days. I redid one of the cobblestone textures used in the Hlaalu towns, namely tx_wg_road_01.dds.

Here are a few screen shots of my first pass on this texture replacer in action over in Balmora. I still need to do a few edits before they will be done, but I thought they already looked decent enough to at least share some images with you all.

https://postimg.org/image/545sawx3l/
https://postimg.org/image/5yz6c07dj/

Once I have them fixed up I will post them somewhere to share with those interested in trying it out first hand. For those who would like a better idea of the work flow I used while making this, feel free to follow on with the rest of the post. Otherwise, if you don't care, you can consider this the end here. :D

==========

I did my best to stay fairly true to the vanilla texture, using it as the basis for a high poly mesh (~5 million verts) and as the base layer of my remake of the diffuse texture, though I did make some changes to allow it to tile better. I started with the model in Blender by taking a plane and subdividing/extruding it as necessary to fit each of the individual stones, added a subsurf and brought the edges down a little bit to round off the edges, applied the subsurf, added a multires modifer and then used a series of displacement modifiers to give a nice stone look to them. After that I added a separate plane that I subdivided a bunch and added a multires to and a few displacements to fill in the gaps between the stones with a bit of roughed up dirt with some small pebbles thrown in.

The stone faces were also split into 4 different objects. This allowed me to use array modifiers on just the bits that needed them to avoid a lot of unnecessary geometry from being generated. Basically there was the main portion that never touched any edges and therefore needed no arrays. Then the stone in the corner was on its own and had 2 arrays one to get it into the adjacent corner along x then a second array along y to fill the remaining 2 corners. Then the stones that clipped off the left side were in an object of their own that had an array modifier set to the x axis to copy them to the right side. The same was done for the stones that clipped off the top edge to copy them along y to the bottom edge. These arrays had to be placed after the multires AND displacement modifiers to make sure that the copies had the same displacement as the originals so they would wrap properly in the baked out texture channels.

Once the meshes were in place I set up an orthographic camera (camera that doesn't do depth distortion) above the mesh pointing down set to match the size of the mesh and in render it was set to my desired output of 1024x1024. I enabled the ambient occlusion in the world settings tab and also added a sun lamp directly above and pointing straight down. Once this was all in place I was able to render everything out to have an ambient occlusion (AO) layer for use in the texture work later on.

Baking the normal map to a simple plane was fairly straight forward and easy, you can find plenty of tutorials on how to do this with a web search. What wasn't so easy was getting a decent height map out that used the full 0-255 spectrum. In the end I had to go through the painful process of applying all the modifiers on the 5 different meshes I was using and combine them, into a single mesh. Crashed about a half dozen times in the process because 8 GB just wasn't nearly enough memory to get the heavy joins done while still keeping the state of previous steps and rendering to the viewport, so I had to disable undo and set the viewport to bounding box display mode. Once combined though, I was able to give it a new material set to shadeless and used one of the procedural texture options, blend, to create a gray scale ramp where the lowest point was black and the highest point was white. I had to go with generated and set the mapping to z for all 3 axes. Then I used my previously created orthographic camera setup to render out the height map.

The texture work (besides the baked bits done in Blender) was all done in GIMP. I started with the original texture and enlarged it to 1024^2 from the original 256^2. I then gave it a Gaussian blur pass to help eliminate some of the detail and baked in lighting data. I brought in that AO render from Blender of the stone faces without the dirt background both to use as an overlay and a quick and easy way to get a selection mask by being able to select the transparent bits between the faces. I made a copy of that and set one to darken only with 100% opacity and the other on top of that as burn set at about 10-20% opacity. I added a bunch of cloud and noise layers that mostly got converted to alpha masks before the content of their layers were deleted and replaced with solid colors fills. These were set at varying levels of opacity until I was happy with the results. I also used one of the AO layers to get a selection of the gaps between stones faces that I then either shrunk or grew a few pixels and applied a feather to the selection to use in adding an alpha mask to a few of the layers I created to add some dirt/grunge just to the areas between the stones and slightly overlapping the stone edges to blend them better.

When I was finally happy with the results I created a new layer from all visible layers and adjusted the color curves on it until it was fairly close to the original texture in color and brightness. The result became the finished diffuse for my texture replacer. I then made a copy of that, desaturated it (using the luminosity option), and then adjusted the result with the color curve again to make it darker for use as the specularity data.

Once all 4 material channels were finally done, I then went through the task of combining them as necessary and exporting them as .dds files from GIMP. The diffuse/specular texture was exported using dxt5 compression, while the normal/height map texture had no compression. They both had mipmap generation enabled as well. Once these were exported my work was done (for the most part). I just had to toss them into Data/Textures and fire up the game to test them out (once the settings.cfg was updated with the proper shader settings anyhow). If you are unaware of the details on which channels belong where and what config settings need to be added/changed then check out the wiki page on texture modding:

https://wiki.openmw.org/index.php?title=TextureModding
Last edited by Uradamus on 04 Jul 2016, 07:05, edited 2 times in total.

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Capostrophic
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Re: My first texture replacement.

Post by Capostrophic » 03 Jul 2016, 21:01

Whoah.

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lysol
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Re: My first texture replacement. [Updated]

Post by lysol » 04 Jul 2016, 06:50

Here's someone who does this the real way! :)

Really nice work! I was planning on adding this particular texture to my hlaalu pack later, but I not really sure if it is needed anymore. :)
Normal mapped texture replacers, exclusive for OpenMW:
My Nexus page

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Uradamus
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Re: My first texture replacement. [Updated]

Post by Uradamus » 04 Jul 2016, 07:25

lysol wrote:Here's someone who does this the real way! :)

Really nice work! I was planning on adding this particular texture to my hlaalu pack later, but I not really sure if it is needed anymore. :)
Thanks, was a fun practice project. I think I will do the brick paver looking ground texture used on the upper tier of Balmora next (tx_wg_cobblestones_01).

I would actually kinda like to do the same for all the game's ground textures, but it is too soon to say if I will get around to them. First I got to hunt them all down and get a feel for what kind of time investment it would take. This kinda stuff is good practice though and forces me to finally do some texture work which is always a good thing, since I have a terrible tendency to make models and stop before getting to the texturing. >.<

Also, nice work on your texture packs as well. I was checking them out a while back. Don't have them activated atm though as I am doing a vanilla graphics run to see what stuff might inspire me to work on replacements of my own as it has been years since I last played the game without a ton of graphics mods, heh.

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lysol
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Re: My first texture replacement. [Updated]

Post by lysol » 08 Jul 2016, 10:01

Installed it now. It rocks, no pun intended. Really, it looks very good. The only thing I can say is that I'd turn down the specularity a bit. It looks a bit like polished stone you'd find in the rich quarters, only these are the "rough" stones. It would IMO make more sense with the specularity on the tx_wg_cobblestone texture instead.

Still, this is a matter of preference. It looks really good.
Normal mapped texture replacers, exclusive for OpenMW:
My Nexus page

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raevol
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Re: My first texture replacement. [Updated]

Post by raevol » 08 Jul 2016, 20:54

Have to agree about the specularity, but also have to agree that it looks awesome!

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Uradamus
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Re: My first texture replacement. [Updated]

Post by Uradamus » 11 Jul 2016, 08:19

Ya, I agree actually, after playing with it activated for a while now I noticed at certain times of the day (and night) it was much stronger than I intended. I need to go back in and redo it again.

I would have already done it by now, but I got caught up with the idea of reinstalling Skyrim and using Mod Organizer to manage my mods this time around which has sucked away a few days of my time, mostly because of issues getting a few versions of .NET to install properly into Wine. >.< Fortunately it seems I finally got everything working properly, except LOOT, but I don't use that anyhow so no big loss really.

So hopefully some time in the next few days once I tire of trying out some Skyrim mods I've put off trying for fear of having to uninstall them manually (mainly Legacy of the Dragonborn), I will finally get around to toning down that specularity a fair bit more. Once I do I will bump the thread and update the download in the top post.

I think I might also pack the various material channels as separate source files as another download for anyone who might want to mess around with things themselves without having to work out how to properly decompose those .dds files. If they aren't too big after compressing, I can even probably include my messy .blend files as well. Will see though, going to have to wait until I got an hour or two free and the motivation to get everything cleaned up and packaged, heh.

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PeterBitt
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Re: My first texture replacement. [Updated]

Post by PeterBitt » 12 Jul 2016, 11:09

Wow this looks perfect on the screenshots! So close to vanilla with style and coloring, love it.
On the screens the specularity looks about right to me, those old cobblestone roads can be very smooth because of many people walking over them, but I guess you know that.

So already three people making top notch, vanilla styled 3d-textures? Awesome.

magamo
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Re: My first texture replacement. [Updated]

Post by magamo » 17 Jul 2016, 16:13

This texture is fantastic. Because of this, and the work from Lysol and Remiros, I've uninstalled all my other texture packs, (Aside from Darknut's Dwemer Ruins textures, which will be uninstalled when someones' work here reaches the dwemer stuff) and am taking great pleasure at seeing the visuals improve with each release done, but it doesn't break the feeling of cohesiveness with the vanilla game. This is absolutely fantastic so far.

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Capostrophic
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Re: My first texture replacement. [Updated]

Post by Capostrophic » 17 Jul 2016, 19:23

magamo wrote:Aside from Darknut's Dwemer Ruins textures
Why not use Tyddy's Full Dwemer Retexture aka DWM RTX?

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