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This section specifically means portraits in portraits.2da that are not tied to a particular creature appearance. Those are usually found with the creature themselves.

The base game ones will get a 4x upscale (or reuse the _H one as a lower sized one) and any new ones will be listed here.

portraits.txi

This file must be included and be blanked so that the mipmaps of DDS files on portraits doesn't ruin the quality at high resolutions and high scaling values (eg; x3 or x4). It otherwise takes some weird cross section of the file when resizing it or viewing them at distance.

Methodology

This is from the 4x project.

Crunch Options

All portraits won't have alpha so forcing -DTX1 on nwn_crunch is the key to lower file sizes.

New Approach

After some testing of the below (renaming some files, copying others) it is actually beneficial instead to use the mipmaps of the 4x option.

Edited - this is the new approach, just use crunch to generate all the sizes with the rescale option.

# Make duplicates of the PNG files

# Find all files
$source = Get-ChildItem "in\*h.png" -Recurse

$itemcount = $source.count
$itempercent = $source.count*100
$progress = 0

foreach ($sourcefile in $source)
{
    # Progress bar
    $progress++
    Write-Progress -Activity "Copying _H files to the other sizes. Current item: $sourcefile" -Status "Progress: $progress of $itemcount" -PercentComplete (100 * $progress/$itemcount)

    
    # Get the source filename - needs a space at the start too
    $filename = Split-Path -Path $sourcefile -Leaf
    # Take off last letter
    $filename_short = $filename.substring(0, $filename.length - 5)

    $l_file = "in\" + $filename_short + "l.png"
    $m_file = "in\" + $filename_short + "m.png"
    $s_file = "in\" + $filename_short + "s.png"
    $t_file = "in\" + $filename_short + "t.png"

    # Copy to the other names
    If(!(Test-Path "$l_file")) { Copy-Item $sourcefile -Destination "$l_file" }
    If(!(Test-Path "$m_file")) { Copy-Item $sourcefile -Destination "$m_file" }
    If(!(Test-Path "$s_file")) { Copy-Item $sourcefile -Destination "$s_file" }
    If(!(Test-Path "$t_file")) { Copy-Item $sourcefile -Destination "$t_file" }
}

Write-Output "Generating _h DDS"
.\nwn_crunch.exe -file -i "in\*h.png" -outdir "out" -fileformat dds -DXT1 -yflip -quiet
Write-Output "Generating _l DDS"
.\nwn_crunch.exe -file -i "in\*l.png" -outdir "out" -fileformat dds -DXT1 -yflip -quiet -rescale 512 1024
Write-Output "Generating _m DDS"
.\nwn_crunch.exe -file -i "in\*m.png" -outdir "out" -fileformat dds -DXT1 -yflip -quiet -rescale 256 512
Write-Output "Generating _s DDS"
.\nwn_crunch.exe -file -i "in\*s.png" -outdir "out" -fileformat dds -DXT1 -yflip -quiet -rescale 128 256
Write-Output "Generating _t DDS"
.\nwn_crunch.exe -file -i "in\*t.png" -outdir "out" -fileformat dds -DXT1 -yflip -quiet -rescale 64 128

Write-Output "Done"

# This is an awful way of doing things but hey, whatever
# Make duplicates of the PNG files

# Find all files
$source = Get-ChildItem "in\*m.png" -Recurse

$itemcount = $source.count
$itempercent = $source.count*100
$progress = 0

foreach ($sourcefile in $source)
{
    # Progress bar
    $progress++
    Write-Progress -Activity "Copying _m files to the other sizes. Current item: $sourcefile" -Status "Progress: $progress of $itemcount" -PercentComplete (100 * $progress/$itemcount)

    
    # Get the source filename - needs a space at the start too
    $filename = Split-Path -Path $sourcefile -Leaf
    # Take off last letter
    $filename_short = $filename.substring(0, $filename.length - 5)

    $s_file = "in\" + $filename_short + "s.png"
    $t_file = "in\" + $filename_short + "t.png"

    # Copy to the other names
    If(!(Test-Path "$s_file")) { Copy-Item $sourcefile -Destination "$s_file" }
    If(!(Test-Path "$t_file")) { Copy-Item $sourcefile -Destination "$t_file" }
}

Write-Output "Generating _m DDS"
.\nwn_crunch.exe -file -i "in\*m.png" -outdir "out" -fileformat dds -DXT1 -yflip -quiet -rescale 256 512
Write-Output "Generating _s DDS"
.\nwn_crunch.exe -file -i "in\*s.png" -outdir "out" -fileformat dds -DXT1 -yflip -quiet -rescale 128 256
Write-Output "Generating _t DDS"
.\nwn_crunch.exe -file -i "in\*t.png" -outdir "out" -fileformat dds -DXT1 -yflip -quiet -rescale 64 128

Write-Output "Done"

Creatures

We want to upscale the Huge portrait which is highest quality option available to be the new Huge. Then we cut this one in half for the Large.

Then we reuse H, L and M for M, S, T.

Portrait Size	Use	Original Size	TGA Size	4x Size	File Used	DDS Size	Notes
Huge (h)	Chargen only really	256x512	385KB	1024x2048	H upscaled	1.33MB
Large (l)	Character sheet	128x256	97KB	512x1024	Upscaled H rescaled		Sizeable increase in quality
Medium (m)	Top left portrait	64x128	25KB	256x512	Upscaled H rescaled		4x the original size so should be good (and not too large)
Small (s)	Sidebar portrait, conversations	32x64	7KB	128x256	Upscaled H rescaled		4x the original size so should be good (and not too large)
Tiny (t)	Tab "see names" portrait	16x32	2KB	64x128	Upscaled H rescaled		4x the original size so should be good (and not too large)

For placeables since they lack H and L (mostly! there are 1 or 2 that have them, perhaps since the portraits are reused on creatures for some reason).

Portrait Size	Original Size	4x Size	Option to do
Medium (m)	64x128 canvas; upper 64x100 used	256x512	M upscaled
Small (s)	32x64 canvas; upper 32x50 used	128x256	M upscaled and rescaled
Tiny (t)	16x32 canvas, upper 16x25 used	64x128	M upscaled and rescaled

Oddities for the different options below:

po_plc_rainbw_h - Placeable but has h and l versions
po_plc_bbl_sm_m - This one has ONLY the medium one for some reason
po_msc_ - several placeable ones not marked "po_plc_" for some reason
po_levelup - only file, used in the top right for levelup (Equivalent I think to "m")
po_gi_x0horse_m - I think a placeable one, has only m/s/t
po_door01_m - placeable or door but not named po_plc_ so has only m/s/t
po_pause - solo file like levelup that has just the "m" sized variant
po_timestop - solo file like levelup that just has the "m" sized variant
po_unknownpc - Special solo file
There's also a few default portrait files not prefixed po_ likely used in some cases

Can remove:

po_plc_x0_syt_s and po_plc_x0_tyt_t are the same item, no "m" version, and thus misnamed or the only ones. Neither appear in portraits.2da (syt/tyt). Looks to be a destroyed version of po_plc_x0_myt_m.
Unused due to odd names not sure why they're even there:
- po_pwc_mage_001_
- po_pwc_post_001_
- po_pwc_rubl_001_
- po_pwc_rubl_002_
- po_pwc_rubl_003_
- po_pwc_sand_001_, po_pwc_sand_002_, po_pwc_sand_003_ and po_pwc_sand_004_
- po_pwc_sieg_001_, po_pwc_sieg_002_, po_pwc_sieg_003
- po_pwc_skull_01__
- po_pwc_tabl_001_, po_pwc_tabl_002_
- po_pwc_torc_001_

Original Portraits Upscaled

To follow. Need to pick out which ones are appearance.2da related.

New Portraits

To follow.

Naming convention would be: po_op_XXX_t.dds (where T would be the appropriate size ID). XXX can be 9 characters long. This is because of portraits.2da limitations (you are forced to use po_ as a prefix!)