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ecs: fix padding and data copy in setCapacity()

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dweiller 2022-06-13 00:34:26 +10:00 • committed by Stephen Gutekanst
parent 390b8bd922
commit f6d29e7669
1 changed files with 10 additions and 5 deletions
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15
ecs/src/entities.zig
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@ -151,17 +151,22 @@ pub const ArchetypeStorage = struct {
new_capacity_bytes += new_capacity * column.size; new_capacity_bytes += new_capacity * column.size;
} }
const new_block = try gpa.alloc(u8, new_capacity_bytes); const new_block = try gpa.alloc(u8, new_capacity_bytes);
if (storage.capacity > 0) mem.copy(u8, new_block, storage.block);
storage.block = new_block;
storage.capacity = @intCast(u32, new_capacity);
var offset: usize = 0; var offset: usize = 0;
for (storage.columns) |*column| { for (storage.columns) |*column| {
const padding = column.alignment - (@ptrToInt(&storage.block[offset]) % column.alignment); const align_mod = @ptrToInt(&new_block[offset]) % column.alignment;
const padding = if (align_mod == 0) 0 else column.alignment - align_mod;
offset += padding; offset += padding;
if (storage.capacity > 0) {
const slice = storage.block[column.offset .. column.offset + storage.capacity * column.size];
mem.copy(u8, new_block[offset..], slice);
}
column.offset = offset; column.offset = offset;
offset += storage.capacity * column.size; offset += new_capacity * column.size;
} }
storage.block = new_block;
storage.capacity = @intCast(u32, new_capacity);
} }
/// Sets the entire row's values in the table. /// Sets the entire row's values in the table.