struct_member_offset_attribute.h | Explore in Territory

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#ifndef SRC_TINT_LANG_WGSL_AST_STRUCT_MEMBER_OFFSET_ATTRIBUTE_H_
#define SRC_TINT_LANG_WGSL_AST_STRUCT_MEMBER_OFFSET_ATTRIBUTE_H_

#include <string>

#include "src/tint/lang/wgsl/ast/attribute.h"
#include "src/tint/lang/wgsl/ast/expression.h"

namespace tint::ast {

/// A struct member offset attribute
/// @note The WGSL spec removed the `@offset(n)` attribute for `@size(n)`
/// and `@align(n)` in https://github.com/gpuweb/gpuweb/pull/1447. However
/// this attribute is kept because the SPIR-V reader has to deal with absolute
/// offsets, and transforming these to size / align is complex and can be done
/// in a number of ways. The Resolver is responsible for consuming the size and
/// align attributes and transforming these into absolute offsets. It is
/// trivial for the Resolver to handle `@offset(n)` or `@size(n)` /
/// `@align(n)` attributes, so this is what we do, keeping all the layout
/// logic in one place.
class StructMemberOffsetAttribute final : public Castable<StructMemberOffsetAttribute, Attribute> { … };

}  // namespace tint::ast

#endif  // SRC_TINT_LANG_WGSL_AST_STRUCT_MEMBER_OFFSET_ATTRIBUTE_H_
chromium/third_party/dawn/src/tint/lang/wgsl/ast/struct_member_offset_attribute.h
