fixing external structs

2026-05-15 00:55:34 +02:00
parent dc80a6a348
commit 236c6496ff
3 changed files with 17 additions and 6 deletions
@@ -1452,7 +1452,13 @@ fn opAccessChain(allocator: std.mem.Allocator, word_count: SpvWord, rt: *Runtime
                                        end_offset = @max(end_offset, field_offset + try field.getPlainMemorySize());
                                    }
                                    const member_offset: usize = @intCast(s.offsets[component_index] orelse end_offset);
-                                    uniform_slice_window = try helpers.advanceWindow(uniform_slice_window, member_offset);
+
+                                    if (uniform_slice_window != null) {
+                                        uniform_slice_window = try helpers.advanceWindow(uniform_slice_window, member_offset);
+                                    } else if (s.external_data) |data| {
+                                        uniform_slice_window = data[0..];
+                                    }
+
                                    value_ptr = &s.values[component_index];
                                },
                                .RuntimeArray => |*arr| {