src/tint/lang/glsl/ir/combined_texture_sampler_var.h

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#ifndef SRC_TINT_LANG_GLSL_IR_COMBINED_TEXTURE_SAMPLER_VAR_H_
#define SRC_TINT_LANG_GLSL_IR_COMBINED_TEXTURE_SAMPLER_VAR_H_

#include <string>

#include "src/tint/lang/core/ir/var.h"
#include "src/tint/utils/rtti/castable.h"

namespace tint::glsl::ir {

/// A combined texture sampler variable instruction in the IR.
class CombinedTextureSamplerVar final : public Castable<CombinedTextureSamplerVar, core::ir::Var> {
  public:
    /// Constructor
    /// @param id the instruction id
    /// @param result the result value
    /// @param texture_bp the texture binding point
    /// @param sampler_bp the sampler binding point
    CombinedTextureSamplerVar(Id id,
                              core::ir::InstructionResult* result,
                              tint::BindingPoint texture_bp,
                              tint::BindingPoint sampler_bp);

    ~CombinedTextureSamplerVar() override;

    /// @returns the texture binding point
    tint::BindingPoint TextureBindingPoint() {
        auto bp = BindingPoint();
        TINT_ASSERT(bp);
        return *bp;
    }

    /// @returns the sampler binding point
    tint::BindingPoint SamplerBindingPoint() { return sampler_binding_point_; }

    /// @copydoc core::ir::Instruction::Clone()
    CombinedTextureSamplerVar* Clone(core::ir::CloneContext& ctx) override;

    /// @returns the friendly name for the instruction
    std::string FriendlyName() const override { return "combined_texture_sampler"; }

  private:
    tint::BindingPoint sampler_binding_point_;
};

}  // namespace tint::glsl::ir

#endif  // SRC_TINT_LANG_GLSL_IR_COMBINED_TEXTURE_SAMPLER_VAR_H_