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DoomMusic's StudioMDL V1.02 - A Modding Tool for Goldsource Engine.

The best fixed StudioMDL so far ..

BrianObvilion (AKA DoomMusic on Sven Co-op Forums) have created new StudioMDL compiler, that fixes UV-shifting problem. Here's his original topic on SC Forums:

I've created a fixed version of the studiomdl compiler that's meant to fix the texture coordinate shifting
issue that's been present since time in memoriam. Keep in mind though, that you should keep your texture
resolutions at 512 maximum, as otherwise it will fail. You can override this with the -o command, if you're
using Xash or anything else that supports larger textures.

Part of the fix is that now textures are not resized, but put onto a larger canvas with a power of 2 resolution
closest to the original texture's resolution, but never lower. So if you have a texture with a res of 513x512, 
it will be resized to 1024x512. For this reason, it's best to resize it to 512x512 in a program like IrfanView. 
The reason this isn't done by studiomdl is that resizing 8-bit bmps without a proper algorithm, like the one in
IrfanView, will lead to artifacts in the texture. This artifact bug was present also in the original studiomdl.

To showcase the changes, this is what the original texture looked like:

And this is what the compiler will put in the model:

This studiomdl should work with any GUI compiler. Also keep in mind that in any models where you applied the
shift, you will have to re-adjust the UV coords to their intended locations.


- This version fixes the issue with bones that only have attachments being removed and causing compile errors. 
Now, if your bone has no vertexes, but it still has attachments, it will not be optimized out.
- I've removed texture coord cropping in the 0-1 range, so your texture coords can be freely set as you wish.
- Currently the largest supported texture resolution for Half-Life is 512 in each dimension. If it's larger than 
this, HL will resize it back to 512 pixels, and it might even crash.
This can be overriden by setting the -o parameter, which is useful if you are running in an environment that 
supports textures larger than 512 pixels, like Xash and so.
- $cliptotextures doesn't do anything anymore.
- It supports Sven Coop's fullbright texture flag.


- Added alpha, nomips, flatshade and chrome support for $texrendermode.
- Added the -b parameter to specify a stretch-out border when padding textures
that are not power of 2. Normally this has a value of 1. It should get rid of
any artifacts with texcoords at the edges of textures.


- An issue was fixed when loading in textures that are not multiples of 4 in width. The cause of this issue 
was that internally BMP stores them with the width as a multiple of 4, but studiomdl does not account for 
that when setting the bmp's width for itself


- Added the $protected qc command. This lets you specify bones which cannot
be optimized out by the compiler even if they're not used by any vertices.
$protected "Bip01 Head"

Important notice:

Altough this tool removes UV capping outside the 0-1 range, you still neeed to make sure you use power of 2 
textures if you have UV coords outside of the 0-1 range, as the padding feature will mess that up.
In general you should never use non-power of 2 textures, since Half-Life already resizes everything to power 
of 2 when loading models, which will cause loss of quality in the process.

Comparison with Sven co-op's SDK Smdl:

Original UV exported by Blender:

SC's SDK StudioMDL (Old StudioMDL. New one is based on DoomMusic's)

DoomMusic's new Compiler:

Important Update (1.9.2018):

My friend FunnkyHD took the step and started improving over DoomMusic's work. Bringing the support for Higher def model compiling for example Xash3D engine. Here's the Changelog over v1.02:

 Changed "grabbing" to "grabbed".
  • StudioMDL doesn't close anymore when you get "illegal bone replacement" error.
  • Increased sub-models per model & bodyparts & groups limit to 64.
  • Removed "$cliptotextures is not supported in this program" message.
  • Texture resolution limit set to 4096px. (Xash)
  • Triangles limit set to 30k. (Xash)
  • Vertices limit set to 20k. (Xash)
You can get all these extra features here:
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Note: The current Sven Co-op SDK uses a modified version of this compiler. You may want to use that for more up-to-date support, it works for both vanilla Goldsrc and Sven co-op engines, for Xash3D support check Funnky's Version above ^^^

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