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| |
| #ifndef QT3DRENDER_RENDER_STATEVARIANT_P_H |
| #define QT3DRENDER_RENDER_STATEVARIANT_P_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists for the convenience |
| // of other Qt classes. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include <Qt3DRender/private/renderstates_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace Qt3DRender { |
| namespace Render { |
| |
| struct Q_AUTOTEST_EXPORT StateVariant |
| { |
| StateMask type; |
| |
| union u_Data { |
| BlendEquationArguments blendEquationArguments; |
| BlendEquation blendEquation; |
| AlphaFunc alphaFunc; |
| MSAAEnabled msaaEnabled; |
| DepthRange depthRange; |
| DepthTest depthTest; |
| NoDepthMask noDepthMask; |
| CullFace cullFace; |
| FrontFace frontFace; |
| Dithering dithering; |
| ScissorTest scissorTest; |
| StencilTest stencilTest; |
| AlphaCoverage alphaCoverage; |
| PointSize pointSize; |
| PolygonOffset polygonOffset; |
| ColorMask colorMask; |
| ClipPlane clipPlane; |
| SeamlessCubemap seamlessCubemap; |
| StencilOp stencilOp; |
| StencilMask stencilMask; |
| LineWidth lineWidth; |
| |
| u_Data() |
| { |
| // Assumes the above types don't need to have their ctor called |
| memset(static_cast<void *>(this), 0, sizeof(u_Data)); |
| } |
| |
| u_Data(const u_Data &other) |
| { |
| memcpy(static_cast<void *>(this), static_cast<const void *>(&other), sizeof(u_Data)); |
| } |
| |
| u_Data& operator=(const u_Data &other) |
| { |
| memcpy(static_cast<void *>(this), static_cast<const void *>(&other), sizeof(u_Data)); |
| return *this; |
| } |
| |
| ~u_Data() |
| { |
| // Assumes the above types don't need to have their dtor called |
| } |
| } data; |
| |
| template<class State, typename ... Args> |
| static StateVariant createState(Args... values) |
| { |
| State state; |
| state.set(values...); |
| return StateVariant::fromValue(state); |
| } |
| |
| template<typename GenericState> |
| static StateVariant fromValue(const GenericState &state) |
| { |
| StateVariant v; |
| v.type = GenericState::type(); |
| // all union members start at the same memory address |
| // so we can just write into whichever we want |
| memcpy(static_cast<void *>(&v.data), static_cast<const void *>(&state), sizeof(state)); |
| return v; |
| } |
| |
| RenderStateImpl *state(); |
| const RenderStateImpl *constState() const; |
| |
| bool operator ==(const StateVariant &other) const; |
| bool operator !=(const StateVariant &other) const; |
| }; |
| |
| } // namespace Render |
| } // namespace Qt3DRender |
| |
| QT_END_NAMESPACE |
| |
| #endif // QT3DRENDER_RENDER_STATEVARIANT_P_H |