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struct ShadingAttribs { float3 P; ///< Shading hit position in world space float3 E; ///< Direction to the eye at shading hit float3 N; ///< Shading normal at shading hit float3 T; ///< Shading tangent at shading hit float3 B; ///< Shading bitangent at shading hit float2 UV; ///< Texture mapping coordinates #ifdef _MS_USER_DERIVATIVES float2 DPDX DEFAULTS(float2(0, 0)); float2 DPDY DEFAULTS(float2(0, 0)); ///< User-provided 2x2 full matrix of duv/dxy derivatives of a shading point footprint in texture space #else float lodBias DEFAULTS(0); ///< LOD bias to use when sampling textures #endif #ifdef _MS_USER_HALF_VECTOR_DERIVATIVES float2 DHDX DEFAULTS(float2(0, 0)); float2 DHDY DEFAULTS(float2(0, 0)); ///< User-defined half-vector derivatives #endif PreparedMaterialData preparedMat; ///< Copy of the original material with evaluated parameters (i.e., textures are fetched etc.) float aoFactor; }; |