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Infer array length from custom array if no vertex array is provided #1133

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Merged
Arctis-Fireblight merged 3 commits into from
Dec 25, 2025
Merged

Infer array length from custom array if no vertex array is provided #1133

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72d84e8
Infer array length from custom array if no vertex array is provided
Adrian-Samoticha Jun 24, 2024
b5e969e
Update servers/rendering_server.cpp
Adrian-Samoticha Jun 24, 2024
8b46e58
Change error message when receiving invalid custom format type in `_g…
Adrian-Samoticha Jun 24, 2024
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32 changes: 32 additions & 0 deletions servers/rendering_server.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1239,6 +1239,13 @@ Error RenderingServer::mesh_create_surface_data_from_arrays(SurfaceData *r_surfa
// Include custom array format type.
if (format & (1ULL << (ARRAY_CUSTOM0 + i))) {
format |= (RS::ARRAY_FORMAT_CUSTOM_MASK << (RS::ARRAY_FORMAT_CUSTOM_BASE + i * RS::ARRAY_FORMAT_CUSTOM_BITS)) & p_compress_format;

// If the mesh contains no vertex array, infer the array length from the custom array.
if (array_len == 0) {
Vector<Variant> custom_array = p_arrays[RS::ARRAY_CUSTOM0 + i];
uint32_t factor_reciprocal = _get_vertex_to_custom_array_length_factor(format, RS::ARRAY_CUSTOM0 + i);
array_len = custom_array.size() / factor_reciprocal;
}
}
}

Expand Down Expand Up @@ -1374,6 +1381,31 @@ Error RenderingServer::mesh_create_surface_data_from_arrays(SurfaceData *r_surfa
return OK;
}

int32_t RenderingServer::_get_vertex_to_custom_array_length_factor(uint32_t p_format, int p_array_index) {
uint32_t type = (p_format >> (ARRAY_FORMAT_CUSTOM_BASE + ARRAY_FORMAT_CUSTOM_BITS * (p_array_index - RS::ARRAY_CUSTOM0))) & ARRAY_FORMAT_CUSTOM_MASK;
switch (type) {
case ARRAY_CUSTOM_RGBA8_UNORM:
case ARRAY_CUSTOM_RGBA8_SNORM:
case ARRAY_CUSTOM_RG_HALF: {
return 4;
} break;
case ARRAY_CUSTOM_RGBA_HALF: {
return 8;
} break;
case ARRAY_CUSTOM_R_FLOAT:
case ARRAY_CUSTOM_RG_FLOAT:
case ARRAY_CUSTOM_RGB_FLOAT:
case ARRAY_CUSTOM_RGBA_FLOAT: {
int32_t s = type - ARRAY_CUSTOM_R_FLOAT + 1;

return s;
} break;
default: {
ERR_FAIL_V_MSG(0, "Invalid custom format type.");
}
}
}

void RenderingServer::mesh_add_surface_from_arrays(RID p_mesh, PrimitiveType p_primitive, const Array &p_arrays, const Array &p_blend_shapes, const Dictionary &p_lods, BitField<ArrayFormat> p_compress_format) {
SurfaceData sd;
Error err = mesh_create_surface_data_from_arrays(&sd, p_primitive, p_arrays, p_blend_shapes, p_lods, p_compress_format);
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1 change: 1 addition & 0 deletions servers/rendering_server.h
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Expand Up @@ -388,6 +388,7 @@ class RenderingServer : public Object {
/// Returns stride
virtual void mesh_surface_make_offsets_from_format(uint64_t p_format, int p_vertex_len, int p_index_len, uint32_t *r_offsets, uint32_t &r_vertex_element_size, uint32_t &r_normal_element_size, uint32_t &r_attrib_element_size, uint32_t &r_skin_element_size) const;
virtual Error mesh_create_surface_data_from_arrays(SurfaceData *r_surface_data, PrimitiveType p_primitive, const Array &p_arrays, const Array &p_blend_shapes = Array(), const Dictionary &p_lods = Dictionary(), uint64_t p_compress_format = 0);
int32_t _get_vertex_to_custom_array_length_factor(uint32_t p_format, int p_array_index);
Array mesh_create_arrays_from_surface_data(const SurfaceData &p_data) const;
Array mesh_surface_get_arrays(RID p_mesh, int p_surface) const;
TypedArray<Array> mesh_surface_get_blend_shape_arrays(RID p_mesh, int p_surface) const;
Expand Down
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