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// Copyright 2023 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
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// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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#ifndef SRC_TINT_LANG_HLSL_WRITER_COMMON_OPTIONS_H_
#define SRC_TINT_LANG_HLSL_WRITER_COMMON_OPTIONS_H_
#include <bitset>
#include <optional>
#include <unordered_map>
#include <vector>
#include "src/tint/api/common/binding_point.h"
#include "src/tint/api/options/array_length_from_uniform.h"
#include "src/tint/api/options/binding_remapper.h"
#include "src/tint/api/options/external_texture.h"
#include "src/tint/lang/core/access.h"
#include "src/tint/utils/reflection/reflection.h"
namespace tint::hlsl::writer {
/// kMaxInterStageLocations == D3D11_PS_INPUT_REGISTER_COUNT - 2
/// D3D11_PS_INPUT_REGISTER_COUNT == D3D12_PS_INPUT_REGISTER_COUNT
constexpr uint32_t kMaxInterStageLocations = 30;
/// Configuration options used for generating HLSL.
struct Options {
/// Constructor
Options();
/// Destructor
~Options();
/// Copy constructor
Options(const Options&);
/// Copy assignment
/// @returns this Options
Options& operator=(const Options&);
/// Set to `true` to disable software robustness that prevents out-of-bounds accesses.
bool disable_robustness = false;
/// Set to `true` to disable workgroup memory zero initialization
bool disable_workgroup_init = false;
/// Set to `true` to run the TruncateInterstageVariables transform.
bool truncate_interstage_variables = false;
/// Set to `true` to generate polyfill for `reflect` builtin for vec2<f32>
bool polyfill_reflect_vec2_f32 = false;
/// Options used to specify a mapping of binding points to indices into a UBO
/// from which to load buffer sizes.
ArrayLengthFromUniformOptions array_length_from_uniform = {};
/// Interstage locations actually used as inputs in the next stage of the pipeline.
/// This is potentially used for truncating unused interstage outputs at current shader stage.
std::bitset<kMaxInterStageLocations> interstage_locations;
/// The binding point to use for information passed via root constants.
std::optional<BindingPoint> root_constant_binding_point;
/// Options used in the binding mappings for external textures
ExternalTextureOptions external_texture_options = {};
/// Options used in the bindings remapper
BindingRemapperOptions binding_remapper_options = {};
/// The binding points that will be ignored in the rebustness transform.
std::vector<BindingPoint> binding_points_ignored_in_robustness_transform;
/// AccessControls is a map of old binding point to new access control
std::unordered_map<BindingPoint, core::Access> access_controls;
/// Reflect the fields of this class so that it can be used by tint::ForeachField()
TINT_REFLECT(disable_robustness,
disable_workgroup_init,
truncate_interstage_variables,
polyfill_reflect_vec2_f32,
array_length_from_uniform,
interstage_locations,
root_constant_binding_point,
external_texture_options,
binding_remapper_options,
binding_points_ignored_in_robustness_transform,
access_controls);
};
} // namespace tint::hlsl::writer
#endif // SRC_TINT_LANG_HLSL_WRITER_COMMON_OPTIONS_H_