src/tint/lang/spirv/writer/raise/shader_io.h

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#ifndef SRC_TINT_LANG_SPIRV_WRITER_RAISE_SHADER_IO_H_
#define SRC_TINT_LANG_SPIRV_WRITER_RAISE_SHADER_IO_H_

#include <string>

#include "src/tint/utils/diagnostic/diagnostic.h"
#include "src/tint/utils/result/result.h"

// Forward declarations.
namespace tint::core::ir {
class Module;
}

namespace tint::spirv::writer::raise {

/// ShaderIOConfig describes the set of configuration options for the ShaderIO transform.
struct ShaderIOConfig {
    /// true if frag_depth builtin outputs should be clamped
    bool clamp_frag_depth = false;
    /// true if a vertex point size builtin output should be added
    bool emit_vertex_point_size = false;
    /// true if f16 IO types should be replaced with f32 types and converted
    bool polyfill_f16_io = false;
};

/// ShaderIO is a transform that moves each entry point function's parameters and return value to
/// global variables to prepare them for SPIR-V codegen.
/// @param module the module to transform
/// @param config the configuration
/// @returns success or failure
Result<SuccessType> ShaderIO(core::ir::Module& module, const ShaderIOConfig& config);

}  // namespace tint::spirv::writer::raise

#endif  // SRC_TINT_LANG_SPIRV_WRITER_RAISE_SHADER_IO_H_