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Add hair and iris support

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This commit is contained in:
ackwell 2024-01-14 17:30:13 +11:00
parent b5d4b31301
commit a6788c6dd3
1 changed files with 80 additions and 0 deletions
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80
Penumbra/Import/Models/Export/MaterialExporter.cs
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@ -29,6 +29,8 @@ public class MaterialExporter
// NOTE: this isn't particularly precise to game behavior (it has some fade around high opacity), but good enough for now.
"character.shpk" => BuildCharacter(material, name).WithAlpha(AlphaMode.MASK, 0.5f),
"characterglass.shpk" => BuildCharacter(material, name).WithAlpha(AlphaMode.BLEND),
"hair.shpk" => BuildHair(material, name),
"iris.shpk" => BuildIris(material, name),
"skin.shpk" => BuildSkin(material, name),
_ => BuildFallback(material, name),
};
@ -190,6 +192,84 @@ public class MaterialExporter
}
}
// TODO: These are hardcoded colours - I'm not keen on supporting highly customiseable exports, but there's possibly some more sensible values to use here.
private static Vector4 _defaultHairColor = new Vector4(130, 64, 13, 255) / new Vector4(255);
private static Vector4 _defaultHighlightColor = new Vector4(77, 126, 240, 255) / new Vector4(255);
private static MaterialBuilder BuildHair(Material material, string name)
{
// Trust me bro.
const uint categoryHairType = 0x24826489;
const uint valueFace = 0x6E5B8F10;
var isFace = material.Mtrl.ShaderPackage.ShaderKeys
.Any(key => key.Category == categoryHairType && key.Value == valueFace);
var normal = material.Textures[TextureUsage.SamplerNormal];
var mask = material.Textures[TextureUsage.SamplerMask];
mask.Mutate(context => context.Resize(normal.Width, normal.Height));
var baseColor = new Image<Rgba32>(normal.Width, normal.Height);
normal.ProcessPixelRows(mask, baseColor, (normalAccessor, maskAccessor, baseColorAccessor) =>
{
for (int y = 0; y < normalAccessor.Height; y++)
{
var normalSpan = normalAccessor.GetRowSpan(y);
var maskSpan = maskAccessor.GetRowSpan(y);
var baseColorSpan = baseColorAccessor.GetRowSpan(y);
for (int x = 0; x < normalSpan.Length; x++)
{
var color = Vector4.Lerp(_defaultHairColor, _defaultHighlightColor, maskSpan[x].A / 255f);
baseColorSpan[x].FromVector4(color * new Vector4(maskSpan[x].R / 255f));
baseColorSpan[x].A = normalSpan[x].A;
normalSpan[x].A = byte.MaxValue;
}
}
});
return BuildSharedBase(material, name)
.WithBaseColor(BuildImage(baseColor, name, "basecolor"))
.WithNormal(BuildImage(normal, name, "normal"))
.WithAlpha(isFace? AlphaMode.BLEND : AlphaMode.MASK, 0.5f);
}
private static Vector4 _defaultEyeColor = new Vector4(21, 176, 172, 255) / new Vector4(255);
// NOTE: This is largely the same as the hair material, but is also missing a few features that would cause it to diverge. Keeping seperate for now.
private static MaterialBuilder BuildIris(Material material, string name)
{
var normal = material.Textures[TextureUsage.SamplerNormal];
var mask = material.Textures[TextureUsage.SamplerMask];
mask.Mutate(context => context.Resize(normal.Width, normal.Height));
var baseColor = new Image<Rgba32>(normal.Width, normal.Height);
normal.ProcessPixelRows(mask, baseColor, (normalAccessor, maskAccessor, baseColorAccessor) =>
{
for (int y = 0; y < normalAccessor.Height; y++)
{
var normalSpan = normalAccessor.GetRowSpan(y);
var maskSpan = maskAccessor.GetRowSpan(y);
var baseColorSpan = baseColorAccessor.GetRowSpan(y);
for (int x = 0; x < normalSpan.Length; x++)
{
baseColorSpan[x].FromVector4(_defaultEyeColor * new Vector4(maskSpan[x].R / 255f));
baseColorSpan[x].A = normalSpan[x].A;
normalSpan[x].A = byte.MaxValue;
}
}
});
return BuildSharedBase(material, name)
.WithBaseColor(BuildImage(baseColor, name, "basecolor"))
.WithNormal(BuildImage(normal, name, "normal"));
}
private static MaterialBuilder BuildSkin(Material material, string name)
{
// Trust me bro.