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// Copyright 2023 The Dawn & Tint Authors
//
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// 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
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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#ifndef SRC_TINT_LANG_GLSL_WRITER_COMMON_OPTIONS_H_
#define SRC_TINT_LANG_GLSL_WRITER_COMMON_OPTIONS_H_
#include <optional>
#include <string>
#include <unordered_map>
#include "src/tint/api/options/binding_remapper.h"
#include "src/tint/api/options/external_texture.h"
#include "src/tint/api/options/texture_builtins_from_uniform.h"
#include "src/tint/lang/glsl/writer/common/version.h"
#include "src/tint/lang/wgsl/sem/sampler_texture_pair.h"
namespace tint::glsl::writer {
using SamplerTexturePair = sem::SamplerTexturePair;
using BindingMap = std::unordered_map<SamplerTexturePair, std::string>;
/// Configuration options used for generating GLSL.
struct Options {
/// Constructor
Options();
/// Destructor
~Options();
/// Copy constructor
Options(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 disable the polyfills on integer division and modulo.
bool disable_polyfill_integer_div_mod = false;
/// The GLSL version to emit
Version version;
/// A map of SamplerTexturePair to combined sampler names for the
/// CombineSamplers transform
BindingMap binding_map;
/// The binding point to use for placeholder samplers.
BindingPoint placeholder_binding_point;
/// Options used in the bindings remapper
BindingRemapperOptions binding_remapper_options = {};
/// Options used in the binding mappings for external textures
ExternalTextureOptions external_texture_options = {};
/// Offset of the firstInstance push constant.
std::optional<int32_t> first_instance_offset;
/// Options used to map WGSL textureNumLevels/textureNumSamples builtins to internal uniform
/// buffer values. If not specified, emits corresponding GLSL builtins
/// textureQueryLevels/textureSamples directly.
TextureBuiltinsFromUniformOptions texture_builtins_from_uniform = {};
/// Reflect the fields of this class so that it can be used by tint::ForeachField()
TINT_REFLECT(disable_robustness,
disable_workgroup_init,
disable_polyfill_integer_div_mod,
version,
binding_map,
placeholder_binding_point,
binding_remapper_options,
external_texture_options,
texture_builtins_from_uniform);
};
} // namespace tint::glsl::writer
#endif // SRC_TINT_LANG_GLSL_WRITER_COMMON_OPTIONS_H_