chromium/third_party/dawn/src/tint/lang/glsl/writer/common/options.h

// Copyright 2023 The Dawn & Tint Authors
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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 <vector>

#include "src/tint/api/common/binding_point.h"
#include "src/tint/lang/glsl/writer/common/version.h"
#include "src/tint/lang/wgsl/ast/transform/transform.h"

namespace tint::glsl::writer::binding {

/// Generic binding point
struct BindingInfo {};

Uniform;
Storage;
Texture;
StorageTexture;
Sampler;

/// An external texture
struct ExternalTexture {};

/// A combined texture/sampler pair
// Note, these are the WGSL binding points that are used to create the combined samplers
struct CombinedTextureSamplerPair {};

}  // namespace tint::glsl::writer::binding

namespace std {

/// Custom std::hash specialization for tint::glsl::writer::binding::BindingInfo
template <>
class hash<tint::glsl::writer::binding::BindingInfo> {};

/// Custom std::hash specialization for tint::glsl::writer::binding::CombinedTextureSamplerPair
template <>
class hash<tint::glsl::writer::binding::CombinedTextureSamplerPair> {};

}  // namespace std

namespace tint::glsl::writer {

/// Maps the WGSL binding point to the SPIR-V group,binding for uniforms
UniformBindings;
/// Maps the WGSL binding point to the SPIR-V group,binding for storage
StorageBindings;
/// Maps the WGSL binding point to the SPIR-V group,binding for textures
TextureBindings;
/// Maps the WGSL binding point to the SPIR-V group,binding for storage textures
StorageTextureBindings;
/// Maps the WGSL binding point to the SPIR-V group,binding for samplers
SamplerBindings;
/// Maps the WGSL binding point to the plane0, plane1, and metadata information for external
/// textures
ExternalTextureBindings;
/// Maps texture/sampler info to a combined sampler name
CombinedTextureSamplerInfo;

/// Options used to specify a mapping of binding points to indices into a UBO
/// from which to load buffer sizes.
struct TextureBuiltinsFromUniformOptions {};

/// Binding information
struct Bindings : public Castable<Bindings, tint::ast::transform::Data> {};

/// Configuration options used for generating GLSL.
struct Options {};

}  // namespace tint::glsl::writer

#endif  // SRC_TINT_LANG_GLSL_WRITER_COMMON_OPTIONS_H_