src/tint/api/options/pixel_local.h

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#ifndef SRC_TINT_API_OPTIONS_PIXEL_LOCAL_H_
#define SRC_TINT_API_OPTIONS_PIXEL_LOCAL_H_

#include <cstdint>
#include <unordered_map>

#include "src/tint/utils/reflection/reflection.h"

namespace tint {

/// Options used to specify pixel local mappings
struct PixelLocalOptions {
    /// Index of pixel_local structure member index to attachment index
    std::unordered_map<uint32_t, uint32_t> attachments;

    /// The supported pixel local storage attachment format
    enum class TexelFormat : uint8_t {
        kR32Sint,
        kR32Uint,
        kR32Float,
        kUndefined,
    };
    /// Index of pixel_local structure member index to pixel local storage attachment format
    std::unordered_map<uint32_t, TexelFormat> attachment_formats;

    /// The bind group index of all pixel local storage attachments
    uint32_t pixel_local_group_index = 0;

    /// Reflect the fields of this class so that it can be used by tint::ForeachField()
    TINT_REFLECT(attachments, attachment_formats, pixel_local_group_index);
};

/// Reflect valid value ranges for the PixelLocalOptions::TexelFormat enum.
TINT_REFLECT_ENUM_RANGE(PixelLocalOptions::TexelFormat, kR32Sint, kR32Float);

}  // namespace tint

#endif  // SRC_TINT_API_OPTIONS_PIXEL_LOCAL_H_