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// Copyright 2022 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
////////////////////////////////////////////////////////////////////////////////
// File generated by tools/src/cmd/gen
// using the template:
// src/tint/ast/interpolate_attribute.h.tmpl
//
// Do not modify this file directly
////////////////////////////////////////////////////////////////////////////////
#ifndef SRC_TINT_AST_INTERPOLATE_ATTRIBUTE_H_
#define SRC_TINT_AST_INTERPOLATE_ATTRIBUTE_H_
#include <ostream>
#include <string>
#include "src/tint/ast/attribute.h"
namespace tint::ast {
/// The interpolation type.
enum class InterpolationType {
kInvalid,
kFlat,
kLinear,
kPerspective,
};
/// @param out the std::ostream to write to
/// @param value the InterpolationType
/// @returns `out` so calls can be chained
std::ostream& operator<<(std::ostream& out, InterpolationType value);
/// ParseInterpolationType parses a InterpolationType from a string.
/// @param str the string to parse
/// @returns the parsed enum, or InterpolationType::kInvalid if the string could not be parsed.
InterpolationType ParseInterpolationType(std::string_view str);
constexpr const char* kInterpolationTypeStrings[] = {
"flat",
"linear",
"perspective",
};
/// The interpolation sampling.
enum class InterpolationSampling {
kInvalid,
kCenter,
kCentroid,
kSample,
};
/// @param out the std::ostream to write to
/// @param value the InterpolationSampling
/// @returns `out` so calls can be chained
std::ostream& operator<<(std::ostream& out, InterpolationSampling value);
/// ParseInterpolationSampling parses a InterpolationSampling from a string.
/// @param str the string to parse
/// @returns the parsed enum, or InterpolationSampling::kInvalid if the string could not be parsed.
InterpolationSampling ParseInterpolationSampling(std::string_view str);
constexpr const char* kInterpolationSamplingStrings[] = {
"center",
"centroid",
"sample",
};
/// An interpolate attribute
class InterpolateAttribute final : public Castable<InterpolateAttribute, Attribute> {
public:
/// Create an interpolate attribute.
/// @param pid the identifier of the program that owns this node
/// @param nid the unique node identifier
/// @param src the source of this node
/// @param type the interpolation type
/// @param sampling the interpolation sampling
InterpolateAttribute(ProgramID pid,
NodeID nid,
const Source& src,
InterpolationType type,
InterpolationSampling sampling);
~InterpolateAttribute() override;
/// @returns the WGSL name for the attribute
std::string Name() const override;
/// Clones this node and all transitive child nodes using the `CloneContext`
/// `ctx`.
/// @param ctx the clone context
/// @return the newly cloned node
const InterpolateAttribute* Clone(CloneContext* ctx) const override;
/// The interpolation type
const InterpolationType type;
/// The interpolation sampling
const InterpolationSampling sampling;
};
} // namespace tint::ast
#endif // SRC_TINT_AST_INTERPOLATE_ATTRIBUTE_H_