anchor.diff:            IsActive = null
             RenderPass = 0UL
             DrawCallInfos = null
  +          IndirectBuffer = null
  +          IndirectCount = null
  +
             Mode = null
             Surface = null
             DepthTest = null
  
positive.code:           IsActive = null
            RenderPass = 0UL
            DrawCallInfos = null
            Mode = null
            Surface = null
            DepthTest = null
  
negative.code:         Id : int
          mutable AttributeScope : Ag.Scope
                  
          mutable IsActive            : IMod<bool>
          mutable RenderPass          : uint64
                  
          mutable DrawCallInfos       : IMod<list<DrawCallInfo>>
          mutable IndirectBuffer      : IMod<IBuffer>
          mutable IndirectCount       : IMod<int>
          mutable Mode                : IMod<IndexedGeometryMode>
          
  
          mutable Surface             : IMod<ISurface>
                                
          mutable DepthTest           : IMod<DepthTestMode>
          mutable CullMode            : IMod<CullMode>
          mutable BlendMode           : IMod<BlendMode>
          mutable FillMode            : IMod<FillMode>
          mutable StencilMode         : IMod<StencilMode>
                  
          mutable Indices             : IMod<Array>
          mutable InstanceAttributes  : IAttributeProvider
          mutable VertexAttributes    : IAttributeProvider
                  
          mutable Uniforms : IUniformProvider
      }  
  