Add support for QuakeMDL palletes as a reader option

[lavenderdotpet]

Is your feature request related to a problem? Please describe.
Add support for QuakeMDL palletes as a reader option.

Certain .mdl files should use a different palette of color but this must be choosen be the user.
Lets add support for both QuakeMDL.color_palette and QuakeMDL.color_palette_path reader option and takes them into account.

The available color_palette should be:

• quake1 (already in master and should be the default)
• hexen2 (see archive below)

pals.zip

Users could also set QuakeMDL.color_palette_path to read a text based .gpl file to load a custom palette.

Describe the solution you'd like

• Add hexen2 and the QuakeMDL.color_palette reader option, update test and doc
• Add .gpl file parsing capabilityies and the QuakeMDL.color_palette_path reader option, update test and doc

Contribution
We suggests contributors to do this in separate PRs.

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hexen 2 mdls which im mostly sure are the exact same format just a different palette
load wrong in f3d and the exhibit f3d fork/front end due to it assuming the quake palette

attatched are photos of f3d and LunarViewer

as for fixes for this issue im not sure if it can be automated
LunarViewer has a drop down to swap palettes for mdl

and the hexen2 mdl has the same header as q1 mdl as far as i can tell (heres a screenshot of both of them ina text editor showing the headers look the same)

the fix that i can think of that would also support mods that have their own palette
would be a launch option thats like --palette /home/lavender/palettes/hexen2.gpl

.gpl is the palette standard gnu image manipulation program uses as can be seen here developer.gimp.org/core/standards/gpl/

[lavenderdotpet]

the other way to maybe automate it is
if in progs / models dir load the palette.lmp in the gfx/ folder

edit:
wait scratch that peoples game dirs are offten in .paks

[Meakk]

I'm confused. Hexen 2 .mdl files comes with an associated .gpl palette file?
Can you share a model and the palette?

[lavenderdotpet]

I'm confused. Hexen 2 .mdl files comes with an associated .gpl palette file? Can you share a model and the palette?

they dont come with a palette the game has a palette.lmp in the gfx folder

im just suggesting if u do support palette loading .gpl is a good open format

the id tech .lmp file is a idtech 2 specific binary format which does a bunch of dif things so i wouldn’t suggest using it

.gpl is a text based format

[mwestphal]

is there a list of standard pallette we could provide for .mdl users ?

[lavenderdotpet]

is there a list of standard pallette we could provide for .mdl users ?

slade can convert .lmp to .gpl so heres the q1 and h2 pals

pals.zip

[Meakk]

Should we integrate all these palettes and let the user select it using a reader option?

[lavenderdotpet]

Should we integrate all these palettes and let the user select it using a reader option?

not sure what reader option means

if u mean like a pop up sure

i do still think that a --palette would be good for mdls with custom pals

[Meakk]

Here's the Q1 colormap:

f3d/plugins/native/module/vtkF3DQuakeMDLImporterConstants.h

Line 4 in 11ef5fc

constexpr unsigned char F3DMDLDefaultColorMap[256][3] = { { 0, 0, 0 }, { 15, 15, 15 },

It looks like it matches the file you sent.
We just have to add the hexen 2 palette and add a reader switch to use it.

[mwestphal]

Here's the Q1 colormap:

f3d/plugins/native/module/vtkF3DQuakeMDLImporterConstants.h

Line 4 in 11ef5fc
constexpr unsigned char F3DMDLDefaultColorMap[256][3] = { { 0, 0, 0 }, { 15, 15, 15 },

It looks like it matches the file you sent.
We just have to add the hexen 2 palette and add a reader switch to use it.

yup, that works

[lavenderdotpet]

Here's the Q1 colormap:

f3d/plugins/native/module/vtkF3DQuakeMDLImporterConstants.h

Line 4 in 11ef5fc
constexpr unsigned char F3DMDLDefaultColorMap[256][3] = { { 0, 0, 0 }, { 15, 15, 15 },

It looks like it matches the file you sent.
We just have to add the hexen 2 palette and add a reader switch to use it.

is there gonna be an option to load arbitrary palettes?

[Meakk]

that's not what I described. Would it be useful? Are there other palette outside of the Q1 and H2 ones?

[lavenderdotpet]

that's not what I described. Would it be useful? Are there other palette outside of the Q1 and H2 ones?

people make custom pals for their mods