message: StencilState can now use designated initializers
  We just remove the custom default ctor.
diff: @@ -960,15 +960,6 @@ struct PolygonOffset {
  struct StencilState {
  using StencilFunction = SamplerCompareFunc;
  - StencilState() noexcept : referenceValue(0u), stencilWrite(false), padding(0u) {
  - static_assert(sizeof(StencilOperations) == sizeof(uint32_t), "StencilOperations size not what was intended");
  - static_assert(sizeof(StencilState) == 12u, "StencilState size not what was intended");
  - front.u = back.u = 0u;
  - front.stencilFunc = back.stencilFunc = StencilFunction::A;
  - front.readMask = back.readMask = 0xFF;
  - front.writeMask = back.writeMask = 0xFF;
  - }
  -
  bool operator==(StencilState rhs) const noexcept {
  return front.u == rhs.front.u &&
  back.u == rhs.back.u &&
  @@ -996,29 +987,37 @@ struct StencilState {
  uint8_t padding1 : 2; // 16
  //! Masks the bits of the stencil values participating in the stencil comparison test.
  - uint8_t readMask : 8; // 24
  + uint8_t readMask; // 24
  //! Masks the bits of the stencil values updated by the stencil test.
  - uint8_t writeMask : 8; // 32
  + uint8_t writeMask; // 32
  };
  uint32_t u = 0;
  };
  //! Stencil operations for front-facing polygons
  - StencilOperations front;
  + StencilOperations front = {
  + .stencilFunc = StencilFunction::A, .readMask = 0xff, .writeMask = 0xff };
  //! Stencil operations for back-facing polygons
  - StencilOperations back;
  + StencilOperations back = {
  + .stencilFunc = StencilFunction::A, .readMask = 0xff, .writeMask = 0xff };
  //! Reference value for stencil comparison tests
  - uint8_t referenceValue;
  + uint8_t referenceValue = 0;
  //! Whether stencil-buffer writes are enabled
  - bool stencilWrite;
  + bool stencilWrite = false;
  - uint16_t padding;
  + uint16_t padding = 0;
  };
  +static_assert(sizeof(StencilState::StencilOperations) == sizeof(uint32_t),
  + "StencilOperations size not what was intended");
  +
  +static_assert(sizeof(StencilState) == 12u,
  + "StencilState size not what was intended");
  +
  using FrameScheduledCallback = void(*)(PresentCallable callable, void* user);
  using FrameCompletedCallback = void(*)(void* user);
  