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Fixed large uv wrapping #249

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merged 6 commits into from
Feb 14, 2024
Merged

Fixed large uv wrapping #249

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117ac42
Fixed large UV valid bounds wrapping
Lilaa3 Sep 7, 2023
638e1d1
Unused import
Lilaa3 Sep 8, 2023
6e56d07
Small explicit type correction
Lilaa3 Sep 9, 2023
24cb921
Fixed formatting
Lilaa3 Jan 18, 2024
f2b1d3d
Type hints
Lilaa3 Jan 18, 2024
cf4c42a
Merge branch 'main' into fixed-large-uv-wrapping
Lilaa3 Jan 18, 2024
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32 changes: 26 additions & 6 deletions fast64_internal/f3d/f3d_writer.py
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Original file line number Diff line number Diff line change
Expand Up @@ -139,6 +139,29 @@ def getInfoDict(obj):
return infoDict


def getSTUVRepeats(tex_prop: "TextureProperty") -> tuple[float, float]:
SShift, TShift = 2**tex_prop.S.shift, 2**tex_prop.T.shift
sMirrorScale = 2 if tex_prop.S.mirror else 1
tMirrorScale = 2 if tex_prop.T.mirror else 1
return (SShift * sMirrorScale, TShift * tMirrorScale)


def getUVInterval(f3dMat):
useDict = all_combiner_uses(f3dMat)

if useDict["Texture 0"] and f3dMat.tex0.tex_set:
tex0UVInterval = getSTUVRepeats(f3dMat.tex0)
else:
tex0UVInterval = (1.0, 1.0)

if useDict["Texture 1"] and f3dMat.tex1.tex_set:
tex1UVInterval = getSTUVRepeats(f3dMat.tex1)
else:
tex1UVInterval = (1.0, 1.0)

return (max(tex0UVInterval[0], tex1UVInterval[0]), max(tex0UVInterval[1], tex1UVInterval[1]))


def fixLargeUVs(obj):
mesh = obj.data
if len(obj.data.uv_layers) == 0:
Expand Down Expand Up @@ -168,12 +191,9 @@ def fixLargeUVs(obj):
if material.f3d_mat.use_large_textures:
continue

f3dMat = material.f3d_mat

UVinterval = [
2 if f3dMat.tex0.S.mirror or f3dMat.tex1.S.mirror else 1,
2 if f3dMat.tex0.T.mirror or f3dMat.tex1.T.mirror else 1,
]
# To prevent wrong UVs when wrapping UVs into valid bounds,
# we need to account for the highest texture shift and if mirroring is active.
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To reiterate on my previous comments why "highest"? There must be a piece of code elsewhere on exporting that handles this similarly? Where

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There isn´t because this is doing something else, we don´t need to account for texture resolutions and what not, so there is no function which does this behavior specifically.

UVinterval = getUVInterval(material.f3d_mat)

size = texSizeDict[material]
if size[0] == 0 or size[1] == 0:
Expand Down