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Fix b3d->glTF conv. of models without materials
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parent
64c5a04a1f
commit
2425862045
10
b3d.lua
10
b3d.lua
@ -819,10 +819,16 @@ do
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return 3 * #triangle_set.vertex_ids
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return 3 * #triangle_set.vertex_ids
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end)
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end)
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-- Each triangle set is equivalent to one glTF "primitive"
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-- Each triangle set is equivalent to one glTF "primitive"
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local brush_id = triangle_set.brush_id or mesh.brush_id
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if brush_id == 0 then -- default brush
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brush_id = nil -- TODO (?) add default material if there are UVs
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else
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brush_id = brush_id - 1 -- 0-based
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end
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primitives[i] = {
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primitives[i] = {
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attributes = attributes,
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attributes = attributes,
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indices = index_accessor,
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indices = index_accessor,
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material = (triangle_set.brush_id or mesh.brush_id) - 1, -- 0-based
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material = brush_id,
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-- `mode = 4` (triangles) is the default already, no need to set it
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-- `mode = 4` (triangles) is the default already, no need to set it
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}
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}
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end
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end
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@ -996,7 +1002,7 @@ do
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},
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},
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-- Textures
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-- Textures
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textures = textures[1] and textures, -- glTF does not allow empty lists
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textures = textures[1] and textures, -- glTF does not allow empty lists
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materials = materials,
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materials = materials[1] and materials,
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-- Accessors, buffer views & buffers
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-- Accessors, buffer views & buffers
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accessors = accessors,
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accessors = accessors,
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bufferViews = buffer_views,
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bufferViews = buffer_views,
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