generator/templates/dawn/native/Features.inl

// Copyright 2023 The Dawn & Tint Authors
//
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// modification, are permitted provided that the following conditions are met:
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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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namespace dawn::native {

wgpu::FeatureName ToAPI(Feature feature) {
  switch (feature) {
    {% for enum in types["feature name"].values if enum.valid %}
      case Feature::{{as_cppEnum(enum.name)}}:
        return wgpu::FeatureName::{{as_cppEnum(enum.name)}};
    {% endfor %}
    case Feature::InvalidEnum:
      DAWN_UNREACHABLE();
  }
}

Feature FromAPI(wgpu::FeatureName feature) {
  switch (feature) {
    {% for enum in types["feature name"].values %}
      case wgpu::FeatureName::{{as_cppEnum(enum.name)}}:
        {% if enum.valid %}
          return Feature::{{as_cppEnum(enum.name)}};
        {% else %}
          return Feature::InvalidEnum;
        {% endif %}
    {% endfor %}
    default:
      return Feature::InvalidEnum;
  }
}

static constexpr bool FeatureInfoIsDefined(Feature feature) {
  for (const auto& info : kFeatureInfo) {
    if (info.feature == feature) {
      return true;
    }
  }
  return false;
}

static constexpr ityp::array<Feature, FeatureInfo, kEnumCount<Feature>> InitializeFeatureEnumAndInfoList() {
  constexpr size_t kInfoCount = sizeof(kFeatureInfo) / sizeof(kFeatureInfo[0]);
  ityp::array<Feature, FeatureInfo, kEnumCount<Feature>> list{};
  {% for enum in types["feature name"].values if enum.valid %}
    {
      static_assert(FeatureInfoIsDefined(Feature::{{as_cppEnum(enum.name)}}),
                    "Please define feature info for {{as_cppEnum(enum.name)}} in Features.cpp");
      for (size_t i = 0; i < kInfoCount; ++i) {
        if (kFeatureInfo[i].feature == Feature::{{as_cppEnum(enum.name)}}) {
          list[Feature::{{as_cppEnum(enum.name)}}] = {
            //* Match feature name casing with javascript casing.
            "{{enum.name.js_enum_case()}}",
            kFeatureInfo[i].info.description,
            kFeatureInfo[i].info.url,
            kFeatureInfo[i].info.featureState,
          };
        }
      }
    }
  {% endfor %}
  return list;
}

const ityp::array<Feature, FeatureInfo, kEnumCount<Feature>> kFeatureNameAndInfoList = InitializeFeatureEnumAndInfoList();

}